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Related Concept Videos

Exercise Stress Test01:26

Exercise Stress Test

588
Introduction
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
588
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

150
Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
150
Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

46
Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
46
Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

178
Bradyarrhythmias are cardiac rhythm disorders characterized by a slower-than-normal heart rate, typically defined as fewer than 60 beats per minute. Some of which are discussed here:Sinus BradycardiaSinus bradycardia presents a heart rate lower than 60 beats per minute, with a regular rhythm originating from the SA node. The ECG typically shows normal P waves preceding each QRS complex, a normal PR interval (0.12 to 0.20 seconds), and a normal QRS duration (0.06 to 0.10 seconds).First-Degree AV...
178
Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

198
Tachyarrhythmias are a type of dysrhythmia where the heart rate exceeds 100 beats per minute. Here are some common types of tachyarrhythmias:Sinus TachycardiaSinus tachycardia originates from increased impulses from the sinus node, leading to an elevated heart rate. It is often triggered by stress, fever, or exercise.Patients may experience palpitations, a sensation of a racing heart, dizziness, and chest discomfort.Causes and Risk Factors: Common causes include physical exertion, emotional...
198
Dysrhythmias I: Introduction01:15

Dysrhythmias I: Introduction

235
Dysrhythmias refers to abnormalities in the heart's rhythm. They result from disruptions in the heart's electrical conduction system, which includes the sinoatrial(SA)node, atrioventricular(AV) node, the bundle of His, bundle branches, and Purkinje fibers.Definition and PathophysiologyDysrhythmias result from disorders of impulse formation, impulse conduction, or both. The heart contains specialized cells in the sinoatrial node, atrioventricular node, and the bundle of His and Purkinje fibers...
235

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Related Experiment Video

Updated: Oct 19, 2025

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test
10:21

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test

Published on: September 22, 2023

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Exercise Stress Test-Induced Atrioventricular Dissociation With Syncope.

Zin Thawdar Oo1,2, Dishang Bhavsar3,4,5, Thin Phyu Phyu Aung6

  • 1University of Medicine 1, Yangon, Myanmar.

Ochsner Journal
|September 27, 2021
PubMed
Summary

The exercise stress test, used for diagnosing coronary artery disease, can rarely cause atrioventricular dissociation. Prompt recognition and treatment of this complication are essential for patient recovery.

Keywords:
Atrioventricular dissociationchest painheart block

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Area of Science:

  • Cardiology
  • Diagnostic Testing

Background:

  • Exercise stress testing is a common diagnostic tool for coronary artery disease.
  • While generally safe, potential complications like heart block, though rare, necessitate physician awareness.

Observation:

  • A 65-year-old female experienced angina-like chest pain and underwent an exercise stress test.
  • During the recovery phase, she developed atrioventricular dissociation with junctional rhythm and syncope.

Findings:

  • The patient's condition resolved promptly with intravenous normal saline treatment.
  • This case highlights a rare but unpredictable complication of exercise stress testing.

Implications:

  • Clinicians must remain vigilant for rare adverse events during exercise stress tests.
  • Timely intervention is crucial for managing complications such as atrioventricular dissociation and ensuring patient safety.