Author Interviews, JAMA, Neurology, Surgical Research / 30.07.2018

MedicalResearch.com Interview with: Jianning Zhang MD, Ph.D Chairman, II, VII Chinese Medical Association of Neurosurgery President, Tianjin Medical University General Hospital, China  Jianning Zhang MD, Ph.D Chairman, II, VII Chinese Medical Association of Neurosurgery President, Tianjin Medical University General Hospital, China   MedicalResearch.com: What is the background for this study? Response: The elderly population is growing dramatically world widely, especially in China. The incidence of chronic subdural hematoma has been rising over the past years. Although the surgery is not a difficult process, the risk of death and recurrence persist, and the affliction and economic expenditure of the patients are relatively higher in the elderly. For these reasons, it is urgent to develop novel pharmacological therapies with sufficient safety and efficacy.  It has been known that the high expression of VEGF and inflammatory factors in chronic subdural hematoma can lead to abundant angiogenesis of immature vessels on the wall of hematoma. In our previous study, patients with chronic subdural hematoma have impaired ability to promote vascular maturation. For example, the number of endothelial progenitor cells in circulating blood is about 67% of the healthy individuals with similar age.  Atorvastatin can mobilize endothelial progenitor cells to reduce inflammation. It increases the number of circulating endothelial cells that are inversely correlated with the volume of hematoma. We have demonstrated that atorvastatin can promote endothelial cell formation and reduce the leakage of endothelial cell barrier in vitro. Results from in vivo experiments in animal models of subdural hematoma suggest that atorvastatin can promote the maturation of blood vessels and reduce inflammation on the margin of hematoma, and thus improve the neurological outcome. (more…)
Annals Internal Medicine, Author Interviews, Cancer Research, Kidney Disease, Radiology, Surgical Research / 30.06.2018

MedicalResearch.com Interview with: Adam Talenfeld, M.D Assistant Professor of Radiology Weill Cornell Medical College Assistant Attending Radiologist New York-Presbyterian Hospital. MedicalResearch.com: What is the background for this study? What are the main findings? Response: We know that renal function decreases as we age, and we know that decreased renal function is independently associated with increased mortality. This is why medical society guidelines recommend partial nephrectomy, which preserves kidney tissue and function, over radical nephrectomy for the treatment of the smallest kidney cancers, stage T1a tumors, which are under 4 cm diameter. Paradoxically, though, we know older patients are more likely than younger patients to receive radical nephrectomy for these smallest tumors, probably because it’s a simpler surgery than partial nephrectomy. Percutaneous ablation, focal tissue destruction using heat or cold emanating from the tip of a needle, is a newer, image-guided, minimally-invasive, tissue-sparing treatment for solid organ tumors. We wanted to test how well percutaneous ablation would compare to partial nephrectomy and radical nephrectomy for these smallest kidney cancers. We found that percutaneous ablation was associated with similar 5-year overall and cancer-specific survival compared to radical nephrectomy. At the same time, ablation was associated with significantly lower rates of new-onset chronic renal insufficiency and one-fifth as many serious non-urological complications than radical nephrectomy within 30 days of treatment. These were complications, such as deep venous thrombosis or pneumonia, that resulted in emergency department visits or new hospital admissions. The outcomes of percutaneous ablation compared with partial nephrectomy were somewhat less clear, though ablation was again associated with fewer perioperative complications. (more…)
Author Interviews, JAMA, OBGYNE, Surgical Research / 29.06.2018

MedicalResearch.com Interview with: Sarah CM Roberts, DrPH Associate Professor ObGyn&RS Zuckerberg San Francisco General UCSF MedicalResearch.com: What is the background for this study? What are the main findings? Response: Thirteen states have laws that require abortions to be provided in Ambulatory Surgery Centers (ASCs); many of these laws apply only in the second trimester.  We examined outcomes from more than 50,000 abortions provided in two facility types:  Ambulatory Surgery Centers and office-based settings. We found that there was no significant difference in abortion-related complications across facility type; in both settings, about 3.3% had any complication and about 0.3% had a major complication.  There also was no significant difference in complications across facility types for second trimester and later abortions. (more…)
Author Interviews, CMAJ, Cost of Health Care, Health Care Systems, Hip Fractures, Surgical Research / 12.06.2018

MedicalResearch.com Interview with: Daniel Pincus MD Department of Surgery Institute for Clinical Evaluative Sciences University of Toronto MedicalResearch.com: What is the background for this study? What are the main findings? Response: We chose to look at hip fractures because is the most common reason for urgent surgery complications have be tied to wait times (and in particular wait times greater than 24 hours). (more…)
Author Interviews, BMJ, Outcomes & Safety, Surgical Research, UCLA / 03.05.2018

MedicalResearch.com Interview with: “Untitled” by Marcin Wichary is licensed under CC BY 2.0Yusuke Tsugawa, MD, MPH, PhD Assistant professor Division of General Internal Medicine and Health Services Research David Geffen School of Medicine at UCL Los Angeles, CA  MedicalResearch.com: What is the background for this study? What are the main findings? Response: We studied whether patients’ mortality rate differ based on age and sex of surgeons who performed surgical procedures. Using a nationally representative data of Medicare beneficiaries aged 65-99 years who underwent one of 20 major non-elective surgeries, we found that patients treated by older surgeons have lower mortality than those cared for by younger surgeons, whereas there was no difference in patient mortality between male and female surgeons. When we studied age and sex together, we found that female surgeons at their 50s had the lowest patient mortality across all groups. (more…)
Author Interviews, JAMA, Outcomes & Safety, Race/Ethnic Diversity, Surgical Research / 03.05.2018

MedicalResearch.com Interview with: Dr-Hillary-J-Mull Hillary J. Mull, PhD, MPP Center for Healthcare Organization and Implementation Research Veterans Affairs (VA) Boston Healthcare System Department of Surgery, Boston University School of Medicine Boston, Massachusetts MedicalResearch.com: What is the background for this study? What are the main findings? Response: Little is known about outpatient procedures that can be considered invasive but are not conducted in a surgical operating room. These procedures are largely neglected by quality or patient safety surveillance programs, yet they are increasingly performed as technology improves and the U.S. population gets older. We assessed the rate of invasive procedures across five specialties, urology, podiatry, cardiology, interventional radiology and gastroenterology in the Veterans Health Administration between fiscal years 2012 and 2015. Our analysis included examining the rates of post procedure emergency department visits and hospitalizations within 14 days and the key patient, procedure or facility characteristics associated with these outcomes. We found varying rates of post procedure ED visits and hospitalizations across the specialties with podiatry accounting for a high volume of invasive outpatient care but the lowest rate of postoperative utilization (1.8%); in contrast, few of the procedures were in interventional radiology, but the postoperative utilization rate was the highest at 4.7%. In a series of logistic regression models predicting post procedure healthcare utilization for each specialty, we observed significantly higher odds of post procedural outcomes for African American patients compared to white patients. (more…)
Author Interviews, Heart Disease, JACC, Outcomes & Safety, Surgical Research, University of Michigan / 12.04.2018

MedicalResearch.com Interview with: Donald Likosky, Ph.D., M.S. Associate Professor Head of the Section of Health Services Research and Quality Department of Cardiac Surgery. University of Michigan MedicalResearch.com: What is the background for this study? What are the main findings? Response: Michigan was one of several states to expand Medicaid. Current evaluations of the Michigan Medicaid expansion program have noted increases in primary care services and health risk assessments, but less work has evaluated its role within a specialty service line. There has been concern among some that Medicaid patients, who have traditionally lacked access to preventive services, may be at high risk for poor clinical outcomes if provided increased access to cardiovascular interventions. Using data from two physician-led quality collaboratives, we evaluated the volume and outcomes of percutaneous coronary interventions and coronary artery bypass grafting 24mos before and 24mos after expansion. We noted large-scale increased access to both percutaneous coronary interventions (44.5% increase) and coronary artery bypass grafting (103.8% increase) among patients with Medicaid insurance. There was a decrease in access for patients with private insurance in both cohorts. Nonetheless, outcomes (clinical and resource utilization) were not adversely impacted by expansion.  (more…)
Author Interviews, Surgical Research / 02.04.2018

MedicalResearch.com Interview with: Michael Sawyer, MD, FACS General Surgeon Comanche County Memorial Hospital Lawton, Oklahoma  MedicalResearch.com: What is the background for this study?   Response: Repair of complex incisional hernias is a challenging surgical task. Abdominal wall surgeons are utilizing advanced abdominal wall reconstruction (AWR) techniques including myofascial advancement flap creation with reinforcement by biologic or synthetic prostheses with greater frequency. Numerous synthetic or biologic surgical mesh products are currently available to reinforce these soft tissue repairs. Each type of biologic or synthetic material has its own advantages and limitations. OviTex Reinforced BioScaffolds (RBSs) are unique in that they interweave polymer in a custom "lock-stitch" pattern through layers of biologic tissue in an embroidered construction, aiming to incorporate the salutary properties of both biologic and synthetic repair materials. The biologic material, derived from ovine rumen, has been optimized to minimize foreign body response and enables functional tissue remodeling. The polymer provides additional strength, along with improved handling and load‑sharing capability. (more…)
Author Interviews, Gender Differences, JAMA, Surgical Research / 02.04.2018

MedicalResearch.com Interview with: Neel Mansukhani, MD Department of Surgery Northwestern University and Melina R. Kibbe, MD, FACS, FAHA Colin G. Thomas Jr. Distinguished Professor and Chair Department of Surgery Professor, Department of Biomedical Engineering The University of North Carolina at Chapel Hill Chapel Hill, NC 27599-7050 Editor in Chief, JAMA Surgery  MedicalResearch.com: What is the background for this study? What are the main findings?  Response: This study is a follow-up to our previous work that examined sex bias in surgical research. Previously, we examined sex bias in basic and translational science surgical research, as well as in clinical surgical research. We discovered previously that sex bias exists in basic and translational surgical research in the unequal inclusion of male and female research subjects. In clinical research, we found sex bias in the degree of sex matching of included subjects, and in the frequency of sex-based reporting, analysis, and discussion of the data. In this current work, we sought to understand the effect of author gender on sex bias in surgical research. In this work, we found that most authors are male, most authors work with other authors of the same gender, and sex bias is prevalent regardless of author gender. Most importantly, we found that sex inclusive research receives more citations after publication compared to sex-biased research.  (more…)
Author Interviews, Hematology, Surgical Research, Transfusions / 19.03.2018

MedicalResearch.com Interview with: Shawn Anthony, MD, MBA Assistant Professor of Orthopaedics Icahn School of Medicine at Mount Sinai MedicalResearch.com: What is the background for this study? What are the main findings?  Response: Rates of total shoulder arthroplasty are increasing, especially with an aging population.  Blood loss requiring transfusion is less common than in total hip or knee replacements but still required in some patients.  Tranexamic acid (TXA) is increasingly used to reduce blood loss in lower extremity arthroplasty but limited data exists for its effectiveness and safety in patients undergoing shoulder arthroplasty. We aimed to utilize national data to assess frequency of use and effectiveness of TXA in shoulder arthroplasty patients. While utilization of TXA has become very common in total hip and knee arthroplasty, TXA is still used in less than 50% of patients undergoing shoulder arthroplasty as of 2016.  TXA use was associated with a 36% decrease in transfusion risk and a 35% decreased risk for combined complications. Moreover, TXA use was associated with 6.2% shorter hospital stay. (more…)
Author Interviews, Emergency Care, Heart Disease, Surgical Research / 16.03.2018

MedicalResearch.com Interview with: Dawn Abbott, MD, FACC, FSCAI Associate Chief, Faculty Development and Academic Advancement Director, Interventional Cardiology and Structural Fellowship Programs Associate Professor of Medicine Warren Alpert Medical School, Brown Providence, RI 02903  MedicalResearch.com: What is the background for this study? Response: Approximately 35,000 transcatheter aortic valve replacement (TAVR) procedures are now performed annually in the United States (US). TAVR is usually performed as an elective procedure in hemodynamically stable patients. Approximately 1 in 5 hospitalizations for severe aortic stenosis (AS) are emergent with acute decompensation. Balloon aortic valvuloplasty (BAV) is a therapeutic option in patients with acute decompensated AS; however, long-term survival after BAV remains poor with a high incidence of valvular re-stenosis. Data on the outcomes of urgent/emergent TAVR as a rescue therapy in patients with acute decompensated severe AS are extremely limited. (more…)
Author Interviews, Cost of Health Care, JAMA, Surgical Research / 28.02.2018

MedicalResearch.com Interview with: Dr. Chris Childers, M.D. Division of General Surgery David Geffen School of Medicine at UCLA Los Angeles, CA 90095 MedicalResearch.com: What is the background for this study? What are the main findings? Response: Over 20 million Americans undergo a surgical procedure each year with a price tag over $1 trillion.  The operating room (OR) is a particularly resource dense environment, yet little is known about the actual costs of running an OR.  Most previous efforts focusing on OR costs have come from single-site studies with little detail about the drivers of OR costs. Using financial statements from all California hospitals we estimated that the average cost to the hospital for one minute of OR time was between $36 and $37. Perhaps more notable was the composition of these costs.  Almost two-thirds ($20-21) was attributable to “direct costs” - those generated by the OR itself - including $14 for the wages and benefits of staff, $2.50-3.50 for surgical supplies, and $3 for “other” costs such as equipment repair and depreciation. Interestingly, the remainder ($14-16) was dedicated to “indirect costs” such as the costs associated with hospital security and parking.  While these indirect costs are necessary for a hospital to run, they are not under the purview of the operating room. Finally, we also learned that OR costs have increased quickly over the past 10 years – faster than other sectors of healthcare as well as the rest of the economy. (more…)
Author Interviews, Hematology, Novo Nordisk, Surgical Research / 15.02.2018

MedicalResearch.com Interview with: Stephanie Seremetis, M.D. Corporate Vice President and Chief Medical Officer Biopharmaceuticals at Novo Nordisk MedicalResearch.com: What is the background for this announcement? Response: We’re proud and excited to make Rebinyn® (Coagulation Factor IX (Recombinant), GlycoPEGylated) available as a new extended half-life treatment for hemophilia B management. Rebinyn® is an injectable medicine used to treat and control bleeding in adults and children with hemophilia B. It can be used to treat bleeds when they occur and to manage bleeding during surgery. Rebinyn® is not used for routine prophylaxis or for immune tolerance induction in patients with hemophilia B. Hemophilia B is a serious, chronic, inherited bleeding disease that affects about 5,000 people in the U.S. People living with hemophilia B have low levels of clotting Factor IX protein in the blood, often resulting in prolonged or spontaneous bleeding, especially into the muscles, joints or internal organs.  (more…)
Author Interviews, Surgical Research, Technology / 05.02.2018

MedicalResearch.com Interview with: Dr. Dimitri Amiras, FRCR Consultant radiologist Imperial College Healthcare NHS Trust Dr. Philip Pratt PhD Research Fellow Department of Surgery & Cancer Imperial College London at St Mary's Hospital MedicalResearch.com: What is the background for this study? What are the main findings? Response: We have used the Microsoft HoloLens to assist with complex reconstructive surgery on several patients at a major trauma centre at St Marys Hospital. We believe this is the first report of such a use in reconstructive surgery. From dedicated CT scans we have been able to construct patient specific 3D models of the vascular channels supplying the skin to help the surgeon plan their surgical approach for the harvest of these skin flaps. These 3D models are then projected onto the patient as holograms using the Microsoft HoloLens making the information available and directly relevant at the time of the procedure. The technique helps the surgeon in planning his approach for the patient as well saving time locating the correct vessels at the time of surgery.  (more…)
Author Interviews, BMJ, Pulmonary Disease, Surgical Research / 25.01.2018

MedicalResearch.com Interview with: Ianthe Boden Titled Cardiorespiratory APAM, PhD Candidate, MSc, BAppSc Manager Abdominal Surgery Research Group Clinical Lead – Cardiorespiratory Physiotherapy, Physiotherapy Department Allied Health Services Tasmanian Health Services – North | Launceston General Hospital Launceston TA  MedicalResearch.com: What is the background for this study? Response: Major upper abdominal surgery involves opening up the abdomen - mainly to remove cancer or damaged bowel, liver, stomach, pancreas, or kidney.  It is, by far, the most common major surgical procedure performed in developed countries with millions of procedures performed per annum. Unfortunately a respiratory complication following these operations occurs relatively frequently with between 1 in 10 to almost a half of all patients getting some type of respiratory complication after surgery. Respiratory complications included problems such as pneumonia, lung collapse, respiratory failure, and an acute asthma attack. These complications, especially pneumonia and respiratory failure, are strongly associated with significant morbidity, mortality, increased antibiotic usage and longer hospital stay. These breathing problems occur quite quickly after surgery, becoming evident usually within the first two to three days after surgery. In an effort to ameliorate these complications in developed countries it is common for physiotherapists/respiratory therapists to see a patient for the first time on the day after surgery and start patients doing breathing exercises. However as respiratory dysfunction starts occurring immediately following surgery it is debated that these breathing exercises are being provided too late. Initiating prophylactic treatment more than 24 hours after the end of surgery may not be as effective as starting prophylaxis immediately. Unfortunately, immediately after surgery patients are either very sleepy, in pain, feeling sick, or delirious. It may not be possible to effectively teach patients at this point on the importance of breathing exercises and get good performance. One method to overcome this would be to meet patients before the operation to educate them about their risk of a postoperative chest infection and to motivate and train them to perform breathing exercises to do immediately on waking from surgery. Previous trials have indicated that this may help prevent postoperative respiratory complications, although evidence is inconclusive and weak. We set out to robustly and conclusively see if respiratory complications could be prevented after major upper abdominal surgery if patients were taught breathing exercises to do as soon as they woke up after the operation. We ran this trial in two countries (Australia and New Zealand) and three different types of hospitals.  All patients were met by a physiotherapist at our hospitals’ scheduled pre-admission clinic appointment and either provided with an information booklet (control) or provided with an additional 30 minute education and training session with the physiotherapist. At this preoperative session the patient was educated about respiratory complications, their risk, and how to prevent them with breathing exercises. These exercises were then taught and practiced for just three repetitions. Patients were instructed to do these breathing exercises for 20 repetitions as soon as they woke from surgery and then 20 times every hour after surgery until they were up and out of bed frequently. Following surgery each patient had a standardised rehabilitation program and no respiratory therapy of any type was provided to the patients after surgery. For the first two weeks after surgery patients were assessed daily for a respiratory complication by research assistants unaware of what treatment the patient had received before surgery. (more…)
Author Interviews, JAMA, MD Anderson, Outcomes & Safety, Surgical Research / 24.01.2018

MedicalResearch.com Interview with: Andrew Phillip Loehrer MD MPH Fellow in Surgical Oncology Department The University of Texas MD Anderson Cancer Center MedicalResearch.com: What is the background for this study? What are the main findings?  Response: A growing number of studies have examined the effects of the Affordable Care Act’s Medicaid expansion.  But none to date have looked at effects on surgical conditions, which are both expensive and potentially life-threatening.  We examined data for nearly 300,000 patients who presented to hospitals with common and serious surgical conditions such as appendicitis and aortic aneurysms. We found that expansion of Medicaid coverage was linked to increased insurance coverage for these patients, but even more importantly, Medicaid expansion led patients to come to the hospital earlier before complications set in, and they also received better surgical care once they got there. (more…)
Author Interviews, Cost of Health Care, JAMA, Ophthalmology, Surgical Research, UCSF / 23.01.2018

MedicalResearch.com Interview with: Catherine L. Chen, MD, MPH Assistant Professor UCSF Department of Anesthesia & Perioperative Care MedicalResearch.com: What is the background for this study? What are the main findings? Response: Routine preoperative medical testing (such as common laboratory tests looking at a patient's blood cell counts and kidney function, or cardiac tests like an EKG) are not recommended in patients undergoing cataract surgery, but these tests still occur quite frequently among Medicare cataract surgery patients because these patients tend to be older and sicker than the general population. In the past, researchers have used a 30-day window counting backwards from the date of surgery to determine whether a given test should be categorized as a routine preoperative test. However, we know that testing often takes place outside this window and therefore, the frequency and cost of routine preoperative medical testing has generally been underreported. In our study, we used a new method to figure out how to determine the start of the routine preoperative testing period. In cataract patients, ocular biometry is a diagnostic test that is performed in anticipation of cataract surgery, and this test is only performed in cataract patients who will be having cataract surgery in the near future. For each patient, we calculated the elapsed time between the ocular biometry and cataract surgery dates to get a better idea of when to start looking for unnecessary routine preoperative testing. Our goal was to identify all the routine preoperative medical testing that occurs once the decision has been made to operate and better estimate the cost to Medicare of this unnecessary testing. In a previous study that we published in the New England Journal of Medicine, we reported a significant spike in the rate of routine preoperative medical testing that occurs in the 30 days before surgery compared to the baseline rate of testing. In our current study, we discovered that there is a second spike in testing that occurs in the 30 days after ocular biometry. In fact, even if you exclude the testing that takes place during the 30 days before surgery, there is still a 41% increase in testing rates during the interval between ocular biometry and cataract surgery over the baseline rate of testing. In addition, we found that the cost of routine preoperative testing was 47% higher when looking at the entire biometry to surgery timeframe compared to testing that occurs just in the 30 days before surgery. We estimate that the cost to Medicare of all of this unnecessary testing approaches $45.4 million annually. (more…)
Author Interviews, Heart Disease, JACC, Pediatrics, Surgical Research, UCSD / 04.01.2018

MedicalResearch.com Interview with: Rakesh K. Singh MD, MS Department of Pediatrics, University of California–San Diego and Rady Children’s Hospital San Diego, California Steven E. Lipshultz MD Department of Pediatrics Wayne State University School of Medicine and Children’s Hospital of Michigan Detroit, Michigan  MedicalResearch.com: What is the background for this study? Response: Dilated cardiomyopathy (DCM) is a disease characterized by dilation and dysfunction of the left ventricle of the heart. While DCM is a relatively rare disease in children, nearly 40% of children with DCM require a heart transplant or die within 2 years of diagnosis. Heart transplantation has improved the outcomes of children with DCM over the last 3 decades, but is limited by donor heart availability. Newer therapies, including advanced ICU care and artificial heart machines, are now being used to treat children with DCM. This study published in the November 28, 2017 issue of the Journal of American College of Cardiology (JACC) sought to determine whether more children with DCM were surviving longer in the more recent era. Specifically, it investigated whether children with DCM were surviving longer without the need for heart transplantation. Rakesh Singh, MD is the first author and an Associate Professor of Pediatrics at UC San Diego/Rady Children’s Hospital, while the senior author is Steven Lipshultz, MD, Professor at Wayne State University School of Medicine/Detroit Medical Center’s Children’s Hospital of Michigan and Director of Children’s Research Center of Michigan. The Pediatric Cardiomyopathy Registry (PCMR) is a National Heart, Lung, and Blood Institute (NHLBI) sponsored registry from 98 pediatric centers in United States and Canada created to study the outcomes of children with various heart muscle disorders known as cardiomyopathies. For this study, outcomes of 1,199 children diagnosed with DCM from 1990-1999 were compared with 754 children diagnosed with DCM from 2000-2009. (more…)
Author Interviews, Infections, Ophthalmology, Surgical Research / 14.12.2017

MedicalResearch.com Interview with: Penny Asbell, MD Icahn School of Medicine Mt. Sinai, New York City. MedicalResearch.com: What is the background for this study? ─     Bacterial endophthalmitis is a serious, although infrequent, complication of ocular surgery, typically caused by perioperative introduction of bacterial flora from the patient’s own conjunctiva and skin. ─     Prophylactic measures such as perioperative antibiotic treatment may minimize the risk for endophthalmitis, but can be complicated by antibiotic resistant bacteria. ─     The ongoing Antibiotic Resistance Monitoring in Ocular micRoorganisms (ARMOR) study is the only nationwide antibiotic resistance surveillance program specific to ocular pathogens. ─     The purpose of this presentation is to report on the antibiotic susceptibility profiles of bacterial isolates from the vitreous and aqueous humor collected in the ARMOR study expanding upon earlier findings. (more…)
Author Interviews, Environmental Risks, Health Care Systems, Surgical Research / 11.12.2017

MedicalResearch.com Interview with: <a href="https://www.flickr.com/photos/armymedicine/6127836005">“surgery”</a> by <i> <a href="https://www.flickr.com/people/armymedicine/">Army Medicine</a> </i> is licensed under <a href="https://creativecommons.org/licenses/by/2.0"> CC BY 2.0</a>Andrea MacNeill MD MSc FRCSC Surgical Oncologist & General Surgeon University of British Columbia Vancouver General Hospital BC Cancer Agency MedicalResearch.com: What is the background for this study? Response: Climate change is one of the most pressing public health issues of the present era, responsible for 140,000 deaths annually.  Somewhat paradoxically, the health sector itself has a considerable carbon footprint, as well as other detrimental environmental impacts.  Within the health sector, operating rooms are known to be one of the most resource-intensive areas and have thus been identified as a strategic target for emissions reductions. (more…)
Author Interviews, Environmental Risks, NYU, Ophthalmology / 08.12.2017

MedicalResearch.com Interview with: Cassandra Thiel, PhD Assistant Professor in the Departments of Population Health and Opthamology at NYU Langone Health, and Assistant Professor at NYU Wagner and NYU Tandon School of Engineering MedicalResearch.com: What is the background for this study? Response: Everyone is concerned about the health impacts of climate change, from the United Nations to the Lancet. While other industries are trying to monitor and minimize their environmental footprint, healthcare services have been largely overlooked. Yet, the US healthcare sector emits 10% of the US’s total greenhouse gases. Cataract surgery is one of the most commonly performed procedures in the world. In the US, these surgeries generate large quantities of waste due to the use of single-use, disposable materials and supplies. However, at Aravind Eye Care System in southern India, the outcomes for this procedure are the same as in the US, but the materials they use are mostly reusable. This study assessed the environmental footprint of Aravind’s surgical process, to determine how their process design and material selection affected their emissions. (more…)
Author Interviews, JAMA, Surgical Research, Weight Research / 06.12.2017

MedicalResearch.com Interview with: Anita P. Courcoulas MD, MPH Professor of Surgery, Chief MIS Bariatric & General Surgery University of Pittsburgh Medical Center MedicalResearch.com: What is the background for this study? Response: This study is the main long term outcomes report from The Longitudinal Assessment of Bariatric Surgery (LABS) Study, an NIH-NIDDK ( National Institute of Diabetes and Digestive and Kidney Diseases) funded study at 10 hospitals in 6 clinical centers and a data coordinating center.  It was a multicenter, prospective three phase longitudinal cohort study that began recruitment of participants in 2006 when gastric bypass and laparoscopic adjustable banding were the two most common bariatric procedures performed in the U.S. The goal of this particular study from LABS was to address the longer-term durability and variability of weight loss and the assess the longer-term impact of bariatric surgery on major health conditions including diabetes, dyslipidemia, and hypertension. (more…)
Author Interviews, Boehringer Ingelheim, Surgical Research / 27.11.2017

MedicalResearch.com Interview with: Thomas Seck, M.D., vice president Clinical Development and Medical Affairs Primary Care Boehringer Ingelheim Pharmaceuticals, Inc. MedicalResearch.com: What is the background for this study? What are the main findings? Response: This is a new subanalysis of the phase III RE-VERSE AD™ study, which evaluated the safety and efficacy of idarucizumab, marketed in the U.S. as Praxbind®, in reversing the anticoagulant effect of Pradaxa® (dabigatran etexilate mesylate). This data assessed idarucizumab in a subset of patients requiring an urgent procedure or emergency surgery. The analysis found that idarucizumab rapidly and completely reversed the anticoagulant effect of dabigatran in approximately 98 percent of patients based on dTT. The median time between administration of idarucizumab and start of surgery was 1.7 hours for patients requiring abdominal procedures, 1.9 hours for orthopedic procedures, 1.4 hours for vascular procedures, 1.3 hours for drainage procedures and 1.2 hours for catheter procedures. Among these patients, periprocedural homeostasis was assessed as normal in more than 92 percent of patients, across all surgery types. (more…)
Author Interviews, JAMA, Surgical Research / 26.11.2017

MedicalResearch.com Interview with: Brian C. Stagg, MD Department of Ophthalmology and Visual Sciences University of Michigan Medical School National Clinician Scholars Program University of Michigan Institute for Healthcare Policy and Innovation Joshua D. Stein, MD, MS Associate Professor University of Michigan Department of Ophthalmology and Visual Sciences Director, Center for Eye Policy and Innovation Ann Arbor  MedicalResearch.com: What is the background for this study? What are the main findings? Response: Cataract surgery is one of the most common surgeries in the US. It is typically performed at either hospital outpatient departments (HOPDs) or ambulatory surgery centers (ASCs). ASCs are cheaper and more efficient, but some people believe that HOPDs may be safer for people with co-morbid medical conditions. We conducted this study to evaluate how the use of ambulatory surgery centers for cataract and other ocular surgeries has changed since 2001. We also wanted to see what factors influenced whether or not a patient had cataract surgery at an ASC (versus a HOPD), and to compare ASC use for cataract surgery with ASC use for other common eye surgeries (glaucoma, cornea, retina, strabismus). (more…)
Alcohol, Author Interviews, Surgical Research, Weight Research / 20.11.2017

MedicalResearch.com Interview with: “Alcohol” by Takahiro Yamagiwa is licensed under CC BY 2.0 Marta Yanina Pepino PhD Department of Food Science and Human Nutrition College of Agricultural, Consumer and Environmental Sciences University of Illinois Urbana, IL  MedicalResearch.com: What is the background for this study? What are the main findings? Response: Our study is not the first to look at whether sleeve gastrectomy affects alcohol absorption and metabolism. Before our study, there were three published studies in the literature on this issue. However, findings from these studies were discrepant. Two of the studies found that sleeve gastrectomy did not affect blood alcohol levels and one of the studies did found that peak blood alcohol levels were higher when people drink after having a sleeve gastrectomy. All these three studies used a breathalyzer to estimate blood alcohol levels. Our study tested the following two related hypothesis. First, that similar to Roux-en-Y- gastric bypass (RYGB), sleeve gastrectomy accelerates alcohol absorption, which cause peak blood alcohol levels to be higher and much faster than before surgery. Because the breathalyzer requires a 15 min of waiting time between drinking the last sip of alcohol and the time that you can read a good estimate of blood alcohol levels from the breath, we hypothesized that the breathalyzer was not a good technique to estimate peak blood alcohol levels in people who may reach a peak blood alcohol level before those 15 min have passed, such as people who underwent sleeve gastrectomy or RYGB. We found these two hypothesis to be truth: 1) Sleeve gastrectomy, similar to RYGB, can double blood alcohol levels; and 2) The breathalyzer technique is invalid to assess effects of gastric surgeries on pharmacokinetics of ingested alcohol (it underestimate blood alcohol levels by ~27% and it may miss peak blood alcohol levels). (more…)
Author Interviews, JAMA, Opiods, Surgical Research / 16.11.2017

MedicalResearch.com Interview with: “Surgery” by mrpbps is licensed under CC BY 2.0Sagar Patel MD Facial Plastic Surgeon Board Certified Otolaryngology, Head and Neck Surgeon Facial Plastic Surgery Associates, Houston, Texas MedicalResearch.com: What is the background for this study? What are the main findings? Response: While the majority of diverted opioids that are abused originate from pills prescribed for chronic conditions, with 214,000 rhinoplasties performed in the US in 2015, assessing opioid usage after rhinoplasty is an important view into prescription practices for acute pain after surgical procedures. Opioid use, pain control, and adverse effects were examined and opioid use was compared across patient demographic and surgical procedure characteristics, including rhinoplasty and septoplasty, open vs closed techniques, revision vs primary operations, reduction of turbinates, and use of osteotomies. Opioid use was self-reported as the number of prescribed tablets containing a combination of hydrocodone bitartrate (5 mg) and acetaminophen (325 mg) that were consumed. We them mathematically analyzed. (more…)
Author Interviews, BMJ, Imperial College, Surgical Research / 15.11.2017

MedicalResearch.com Interview with:     Professor JT Powell PhD, MD, FRCPath Faculty of Medicine, Department of Surgery & CancerImperial College London       MedicalResearch.com: What is the background for this study? Response: The mortality from ruptured abdominal aortic aneurysm (AAA) remains very high causing about 6000 deaths each year in the UK.  The only hope for survival is an emergency operation to repair the burst aorta.  Even so the mortality may be as high as 45% within a month of repair using open surgery. It has been suggested that minimally invasive repair using keyhole or endovascular techniques would lower the mortality to about 25% within a month of repair.  However not all shapes of aorta are suitable for endovascular repair (also called EVAR). (more…)
Author Interviews, Pain Research, Radiology / 12.11.2017

MedicalResearch.com Interview with: Dr. Alessandro Napoli Dipartimento di Scienze Radiologiche Unità di Terapia con Ultrasuoni Focalizzati Sapienza Università di Roma, Policlinico Umberto I Rome MedicalResearch.com: What is the background for this study? What are the main findings? Response: Low back pain and sciatica are very common conditions affecting at least 80% of the population (once in life) with detrimental impact on quality of life. Pain cause is often a lumbar disc herniation with sciatic nerve compression. Treatment strategy is primarily conservative (drugs and physical therapy) and when symptoms are persisting for more than 4 consecutive weeks, surgery is advocated. Many patients prefer to avoid surgery for multiple reasons (recurrence rate, risk-related to the intervention and post-surgical sequela). Technology advances with percutaneous techniques allowed more recently to fill the gap between conservative strategy and surgery for the management of lumbar disc herniation and related low back pain extending to the leg(s). Patients are offered local injection for symptoms relief with limited results. Therefore, other non-to-mini invasive approaches are clinically tested for prolonged clinical efficacy. Pulsed radiofrequency is a promising percutaneous approach mainly used for chronic pain. We aimed to test pulsed radiofrequency in patients refractory to conservative treatments, indicated to surgery. Our study demonstrated that radiofrequency with pulsed technique, performed under CT image guidance, is able to control pain in a surgical-free, single session, lasting 10 minutes. The procedure is highly attractive since can be considered nearly risk-free with high rate of success. In our series 80% of patients treated with pulsed radiofrequency resulted pain free (VAS pain score 0 out of 10) at 1, 3 and 12 months follow-up; 90% did not required anymore surgery. (more…)