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Published on: November 7, 2017
Obesity-related cardiorenal syndrome
Ryan Nelson1, Illena Antonetti, John D Bisognano
1Cardiology Division, Department of Medicine, University of Rochester Medical Center, Rochester, NY 14642, USA.
Insights
Obesity cardiomyopathy can progress to severe cardiorenal syndrome under stress, causing pulmonary hypertension and kidney failure in obese patients. This study explores the end stages of this cardiovascular pathology.
Area of Science:
- Cardiology
- Nephrology
- Pulmonology
Background:
- Obesity cardiomyopathy, characterized by left ventricular hypertrophy and diastolic dysfunction, is linked to right ventricular issues.
- The late stages of obesity cardiomyopathy, particularly cardiorenal syndrome, remain poorly understood.
- Obstructive sleep apnea is frequently observed in obese patients with cardiovascular complications.
Purpose of the Study:
- To investigate the end-stage manifestations of obesity-related cardiovascular disease.
- To describe the progression to cardiorenal syndrome in obese patients experiencing physiologic stress.
- To highlight the spectrum of cardiovascular pathology in obesity, including pulmonary hypertension and diastolic dysfunction.
Main Methods:
- Retrospective study of edematous obese patients with comorbidities.
- Analysis of clinical presentation during physiologic stress or infection.
- Evaluation of cardiorenal parameters, including pulmonary hypertension and renal function.
Main Results:
- Obese patients under severe stress developed pulmonary hypertension and right-sided volume overload.
- Decreased effective arterial blood volume and renal failure were observed.
- Findings were often associated with obstructive sleep apnea, indicating a cardiorenal syndrome.
Conclusions:
- Obesity cardiomyopathy can advance to a critical cardiorenal syndrome.
- Physiologic stress exacerbates cardiovascular and renal dysfunction in obese individuals.
- A broad spectrum of cardiovascular issues, including pulmonary hypertension and sleep apnea, are prevalent in obesity.
Abstract:
The term obesity cardiomyopathy has previously been used to describe a clinical syndrome in obese patients typically consisting of eccentric left ventricular hypertrophy with preserved ejection fraction and diastolic dysfunction and is often associated with right ventricular dysfunction independent of the presence of the obstructive sleep apnea syndrome. Although several publications have described the early stages of this syndrome, little is known about the end stages of the disease. The authors conducted a retrospective study of a subset of edematous obese patients with multiple common medical comorbidities who present with a clinical syndrome in the setting of physiologic stress or infection. Under severe physiologic stress these patients developed pulmonary hypertension, right-sided volume overload, decreased effective arterial blood volume, and renal failure. Often, these findings were in the setting of obstructive sleep apnea. This retrospective study focuses on an obesity-related cardiorenal syndrome but also serves to provide a foreground for acknowledging the broad spectrum of cardiovascular pathology, including pulmonary hypertension, diastolic dysfunction, and sleep apnea, seen in the obese.
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