Related Experiment Video
Updated: May 26, 2026
A Pacing-Controlled Procedure for the Assessment of Heart Rate-Dependent Diastolic Functions in Murine Heart Failure Models
Published on: July 21, 2023
Relationship between diastolic function and heart rate recovery after symptom-limited exercise
S Michael Gharacholou1, Christopher G Scott, Barry A Borlaug
1Echocardiography and Hemodynamic Laboratory, Division of Cardiovascular Diseases and Internal Medicine, Rochester, Minnesota, USA.
Diastolic dysfunction is linked to abnormal heart rate (HR) recovery after exercise. Patients with both conditions showed the lowest exercise capacity, highlighting a significant association.
Area of Science:
- Cardiology
- Autonomic Nervous System Function
- Exercise Physiology
Background:
- Autonomic abnormalities are linked to diastolic dysfunction and abnormal heart rate (HR) recovery.
- Limited research exists on the association between diastolic dysfunction and abnormal HR recovery, and their combined impact on exercise capacity.
Purpose of the Study:
- To investigate the relationship between diastolic dysfunction and abnormal HR recovery.
- To determine if these conditions affect exercise capacity.
Main Methods:
- Exercise echocardiography with diastolic assessment in 2,826 patients.
- HR recovery defined as peak exercise HR minus HR at 1 minute post-exercise.
- Abnormal HR recovery categorized as the lowest quartile.
Main Results:
- Patients with diastolic dysfunction or abnormal HR recovery had reduced exercise capacity.
- Those with both conditions exhibited the lowest exercise capacity (P < .0001).
- Diastolic dysfunction independently predicted abnormal HR recovery (aOR 1.47) and chronotropic incompetence (aOR 1.42).
Conclusions:
- Diastolic dysfunction is independently associated with abnormal HR recovery post-exercise.
- Further research is needed to explore if diastolic function influences adverse outcomes in patients with abnormal HR recovery.
More Related Videos
11:04Quantification of Global Diastolic Function by Kinematic Modeling-based Analysis of Transmitral Flow via the Parametrized Diastolic Filling Formalism
Published on: September 1, 2014
08:19Transthoracic Echocardiography to Assess Post-Resuscitation Left Ventricular Dysfunction After Acute Myocardial Infarction and Cardiac Arrest in Pigs
Published on: July 12, 2022
Related Concept Videos
01:20Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
01:26Exercise Stress Test
Exercise stress testing, commonly known as a treadmill test, is a noninvasive procedure used to evaluate cardiovascular function and diagnose heart conditions.
Definition
An exercise stress test measures the heart's response to exertion using a treadmill or stationary bicycle. Chest electrodes record the heart's electrical activity through an ECG, and blood pressure is monitored regularly.
Purposes
01:29Heart Failure II: Pathophysiology
01:19Cardiac Output I:Effect of Heart Rate on Cardiac Output
Cardiac output (CO) refers to the total amount of blood ejected by one of the ventricles in liters per minute (L/min). In a resting adult, CO ranges from 5 to 6 L/min, adjusting according to the body's metabolic requirements.
Effect of Heart Rate on Cardiac Output
Cardiac output adapts to metabolic demands during stress, physical activity, or illness. The autonomic nervous system regulates heart rate via the sinoatrial node. The parasympathetic nervous system decreases heart rate...
01:17Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be met...
01:30Cardiomyopathy II: Dilated Cardiomyopathy