Author Interviews, JAMA, Lipids, Pediatrics / 22.05.2019
Cholesterol Levels in American Youth Improving, But Only Half Have Ideal Lipid Levels
MedicalResearch.com Interview with:
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Dr. Marma Perak[/caption]
Amanda Marma Perak, MD, MS
Assistant Professor of Pediatrics (Cardiology) and
Preventive Medicine
MedicalResearch.com: What is the background for this study?
Response: Blood cholesterol is a critical initiator of atherosclerotic plaques in the arteries that can lead to heart attack in adulthood. It is well established that these changes in the blood vessels occur already in childhood. Thus, it is important to know the status of cholesterol levels in youth to inform public health efforts aimed at preventing cardiovascular disease in the population.
In the US there have been changes in childhood obesity prevalence (which may worsen cholesterol levels), the food supply (such as reduction of trans fats which may improve cholesterol levels), and other factors in recent years.
We therefore designed a study to examine trends in cholesterol levels among youth in recent years.
Dr. Marma Perak[/caption]
Amanda Marma Perak, MD, MS
Assistant Professor of Pediatrics (Cardiology) and
Preventive Medicine
MedicalResearch.com: What is the background for this study?
Response: Blood cholesterol is a critical initiator of atherosclerotic plaques in the arteries that can lead to heart attack in adulthood. It is well established that these changes in the blood vessels occur already in childhood. Thus, it is important to know the status of cholesterol levels in youth to inform public health efforts aimed at preventing cardiovascular disease in the population.
In the US there have been changes in childhood obesity prevalence (which may worsen cholesterol levels), the food supply (such as reduction of trans fats which may improve cholesterol levels), and other factors in recent years.
We therefore designed a study to examine trends in cholesterol levels among youth in recent years.
Dr. Childers[/caption]
Chris Childers, MD, PhD
Division of General Surgery
David Geffen School of Medicine at UCLA
Los Angeles, CA 90095
MedicalResearch.com: What is the background for this study?
Response: Patients with end-stage renal disease – poorly functioning kidneys – often have to receive dialysis. This typically requires a patient to visit an outpatient clinic several times a week to have their blood filtered by a machine. Over the past few years, two for-profit companies have increased their control over the outpatient dialysis market – DaVita and Fresenius. Combined they control approximately ¾ of the market. A number of concerns have been raised against these for-profit companies suggesting that the quality of care they deliver may be worse than the care delivered at not-for-profit companies. But, because they control so much of the market and because patients have to receive dialysis so frequently, patients may not have much choice in the clinic they visit.
Medicare covers patients who are 65 years or older and also patients on dialysis regardless of age. Medicare pays a fixed rate for dialysis which they believe is adequate to cover the clinics' costs. However, if a patient also has private insurance, the insurer is required to pay for dialysis instead of Medicare. Whereas Medicare rates are fixed by the federal government, private insurers have to negotiate the price they pay, and may pay much more as a result.
Dr. Zhong[/caption]
Victor Wenze Zhong, Ph.D.
Postdoctoral fellow
Department of Preventive Medicine
Feinberg School of Medicine
Northwestern University
Chicago, IL 60611
MedicalResearch.com: What is the background for this study?
Response: Dietary cholesterol is a common nutrient in human diet. Eggs, specially egg yolks, are the single richest source of dietary cholesterol among all commonly consumed foods. The associations between dietary cholesterol consumption and cardiovascular disease and mortality remain controversial despite decades of research. Eating less than 300 mg of dietary cholesterol per day was the guideline recommendation before 2015. However, the most recent 2015-2020 Dietary Guidelines for Americans no longer include a daily consumption limit for dietary cholesterol and recommend weekly egg consumption as part of the healthy US-style eating pattern. Whether these recommendations are appropriate have been intensely debated.


Dr. Leung[/caption]
Alexander A. Leung, MD, MPH
Department of Community Health Sciences
Department of Medicine
University of Calgary
Calgary, Alberta, Canada
MedicalResearch.com: What is the background for this study?
Response: The 2017 American College of Cardiology and American Heart Association (ACC/AHA) blood pressure guidelines redefined hypertension according to a blood pressure cutoff of ≥130/80 mm Hg, compared to the traditional cutoff of ≥140/90 mm Hg.
Dr. Rhee[/caption]
Chanu Rhee, MD,MPH
Assistant Professor of Population Medicine
Harvard Medical School / Harvard Pilgrim Health Care Institute
Assistant Hospital Epidemiologist
Brigham and Women’s Hospital
MedicalResearch.com: What is the background for this study?
Response: Sepsis is the body’s reaction to a serious infection that results a cascade of inflammation in the body and organ dysfunction, such as low blood pressure, confusion, or failure of the lungs, kidneys, or liver. Sepsis is a major cause of death, disability, and cost in the U.S. and around the world. Growing recognition of this problem has led to numerous sepsis performance improvement initiatives in hospitals around the country. Some of these efforts have also been catalyzed by high-profile tragic cases of missed sepsis leading to death, which may have contributed to a perception that most sepsis deaths are preventable if doctors and hospitals were only better at recognizing it.
However, the extent to which sepsis-related deaths might be preventable with better hospital-based care is unknown. In my own experience as a critical care physician, a lot of sepsis patients we treat are extremely sick and even when they receive timely and optimal medical care, many do not survive. This led myself and my colleagues to conduct this study to better understand what types of patients are dying from sepsis and how preventable these deaths might be.
