Cardiac rehabilitation outcomes: impact of comorbidities and age

Jennifer Listerman1, Vera Bittner, Bonnie K Sanderson

  • 1University of Alabama at Birmingham, Birmingham, Alabama, USA.

Insights

Cardiac rehabilitation (CR) benefits all patients with coronary heart disease, irrespective of their medical comorbidity (CM) burden. Older patients with higher CM burden still gain significant improvements from CR, so it should not deter referrals.

Area of Science:

  • Cardiology
  • Rehabilitation Medicine
  • Public Health

Background:

  • Medical comorbidities (CM) are a known barrier to cardiac rehabilitation (CR) utilization.
  • The impact of varying CM burden on CR outcomes in coronary heart disease (CHD) patients remains unclear.

Purpose of the Study:

  • To determine if CHD patients with higher CM burden achieve similar benefits from CR compared to those with lower CM burden.
  • To analyze the influence of age on the relationship between CM burden and CR outcomes.

Main Methods:

  • Analysis of 794 CHD patients who completed CR between 1996 and 2008.
  • Assessment of CM burden using a validated comorbidity index (CMI).
  • Multivariable linear regression to compare changes in functional capacity (6-minute walk test), BMI, and SF-36 scores based on CMI and age groups.

Main Results:

  • All patient subgroups, across all ages and CM burdens, showed improvements after CR.
  • Younger patients (<56 years) with a CMI of 0 demonstrated greater improvements than those with higher CMI.
  • In older age groups (≥56 years), the degree of improvement from CR was similar regardless of CM burden.

Conclusions:

  • Cardiac rehabilitation (CR) is beneficial for all patients with coronary heart disease, irrespective of their medical comorbidity (CM) burden.
  • High CM burden, particularly in older individuals, should not be a reason to withhold CR referrals.
  • CR programs should be accessible to all CHD patients to maximize health benefits.
Abstract

Related Concept Videos

Cardiomyopathy V: Interprofessional Care01:29

Cardiomyopathy V: Interprofessional Care

Managing cardiomyopathy involves addressing underlying or precipitating causes, treating heart failure with medications, and implementing dietary changes and a balanced exercise and rest regimen.Lifestyle ModificationsCardiomyopathy patients should adopt a low-sodium diet to reduce fluid retention and manage heart failure. A personalized exercise and rest plan helps maintain physical fitness without overstraining the heart. Avoiding alcohol and tobacco is essential to prevent further damage to...
Pharmacodynamics in Geriatric Patients: Effects of Age01:27

Pharmacodynamics in Geriatric Patients: Effects of Age

Age-related pharmacokinetic changes are extensively documented, but understanding age-related pharmacodynamic alterations is relatively limited. This knowledge gap can be partly attributed to the complexity of developing appropriate measures of drug responses compared to bioanalytical methods for determining drug concentrations.Most information regarding age-related differences in human pharmacodynamics originates from cross-sectional studies. However, these studies assume that observed mean...
Cardiomyopathy II: Dilated Cardiomyopathy01:30

Cardiomyopathy II: Dilated Cardiomyopathy

Dilated cardiomyopathy, or DCM, is a progressive myocardial disorder characterized by ventricular chamber dilation and contractile dysfunction.EtiologyVarious factors can cause DCM, including hypertension and heavy alcohol intake, which contribute to the weakening and enlargement of the heart muscle. Viral infections, such as Coxsackievirus B, adenoviruses, and influenza, can lead to DCM by causing inflammation and damage to heart tissue. Certain chemotherapeutic agents, including daunorubicin,...
Heart Failure III: Clinical Manifestations01:26

Heart Failure III: Clinical Manifestations

Heart failure (HF) manifests primarily as dyspnea, fatigue, and fluid retention, resulting in peripheral and pulmonary edema. Symptoms may vary depending on which ventricle is more affected, left or right.Left-Sided Heart FailureAlso known as left ventricular failure, this condition results from the left ventricle's inability to fill or eject sufficient blood into the systemic circulation. It leads to pulmonary congestion, which occurs when the left ventricle fails to eject blood effectively...
Heart Failure VI: Adjunct Therapies01:22

Heart Failure VI: Adjunct Therapies

Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...