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Related Concept Videos

Electrocardiogram01:29

Electrocardiogram

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An electrocardiogram (ECG or EKG) is a critical diagnostic tool that records the electrical signals produced by the heart during each heartbeat. This recording is achieved through electrodes placed strategically on the arms, legs, and chest. The electrocardiograph amplifies these signals and produces 12 distinct tracings, offering a comprehensive understanding of the heart's electrical activity.
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and...
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Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

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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...
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Exercise Stress Test01:26

Exercise Stress Test

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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
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Electrocardiogram Fundamentals01:28

Electrocardiogram Fundamentals

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Introduction
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin...
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Pulse rhythm01:30

Pulse rhythm

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

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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...
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Updated: Mar 9, 2026

Quantitative Autonomic Testing
11:40

Quantitative Autonomic Testing

Published on: July 19, 2011

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[Syncope: electrocardiogram and autonomic function tests].

William Uribe1, Adrián Baranchuk2, Federico Botero3

  • 1Departamento de Electrofisiología, Arritmias y Marcapasos, Centros Especializados en Salud Cardiología San Vicente, Fundación Medellín y Rionegro, Colombia; Universidades CES, Medellín, Colombia; Universidad Pontificia Bolivariana, Medellín, Colombia. Address: Carrera 43 36-02, Torre Norte, Piso 11, Medellín, Colombia.

Medwave
|January 6, 2017
PubMed
Summary
This summary is machine-generated.

Syncope, a common emergency visit reason, requires accurate diagnosis for effective treatment. Clinical evaluation and tests like the tilt test and electrocardiogram help differentiate causes, guiding patient care and improving outcomes.

Keywords:
cardiac event monitorelectrocardiogramneurally mediated faintspostural orthostatic intolerancetilt table testsyncope

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Area of Science:

  • Cardiology
  • Neurology
  • Emergency Medicine

Background:

  • Syncope is a frequent cause for emergency department visits.
  • Accurate diagnosis is crucial for appropriate etiological management and resource optimization.

Purpose of the Study:

  • To outline the diagnostic approach for syncope.
  • To differentiate between neurogenic and cardiac causes of syncope.
  • To highlight the role of diagnostic tools in syncope management.

Main Methods:

  • Clinical interrogation to distinguish between neurogenic and cardiac syncope.
  • Utilizing diagnostic methods such as the tilt test for neurally mediated syncope.
  • Employing electrocardiogram for identifying cardiac causes and risk stratification.

Main Results:

  • Clinical history is key in differentiating syncope types.
  • The tilt test aids in identifying predominant types of neurally mediated syncope.
  • Electrocardiogram is essential for detecting cardiac syncope and aborted sudden death, providing prognostic data.

Conclusions:

  • A systematic approach to syncope diagnosis is vital.
  • Distinguishing between syncope etiologies impacts patient prognosis and treatment.
  • Diagnostic tools like ECG and tilt testing are indispensable in managing syncope patients.