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Related Concept Videos

Mechanism of Cardiac Arrhythmias01:28

Mechanism of Cardiac Arrhythmias

Arrhythmias are irregular heart rhythms occurring when the heart's electrical impulses become abnormal. These disturbances can lead to various symptoms, depending on their severity and the underlying cause. Some common factors contributing to arrhythmias include hypoxia, ischemia, electrolyte imbalances, excessive catecholamine exposure, drug toxicity, and muscle overstretching. Arrhythmias can be classified into two main types based on the rate and site of origin of abnormal heart rhythms.
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

Arrhythmia or dysrhythmia refers to an abnormal heart rhythm caused by a defect in the heart's conduction system. It can cause the heart to beat irregularly, too quickly, or too slowly, leading to symptoms like chest pain, shortness of breath, and fainting. Factors such as stress, caffeine, alcohol, nicotine, cocaine, certain drugs, congenital defects, diseases, and electrolyte abnormalities can trigger arrhythmias.
Arrhythmias are categorized by their speed, rhythm, and origin. A slow heart...
ECG Interpretation of Arrhythmias I: Sinus Arrhythmias01:16

ECG Interpretation of Arrhythmias I: Sinus Arrhythmias

Arrhythmias are disturbances in the heart's rhythm that lead to abnormal heartbeats. These irregularities can originate from different parts of the heart and are classified based on their origin and nature.
Types of Arrhythmias
Sinus Node Arrhythmias
Sinus Bradycardia: Originating from the sinoatrial (SA) node, sinus bradycardia involves slower impulses, resulting in a heart rate of less than 60 beats per minute (bpm). Causes include sleep, vagal stimulation, beta-blockers, hypothyroidism, and...
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

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...
Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

Dysrhythmias, also known as arrhythmias, are irregular heart rhythms that result from abnormal electrical activity in the heart, affecting its ability to circulate blood efficiently. Tachyarrhythmias, a subset of dysrhythmias, are characterized by abnormally fast heart rates exceeding 100 beats per minute. Here are some types of tachyarrhythmias with their distinct ECG features:Sinus Tachycardia:Sinus tachycardia presents a regular heart rhythm with an increased rate of 101-180 beats per minute.
Dysrhythmias II: Classification of Tachyarrhythmias01:28

Dysrhythmias II: Classification of Tachyarrhythmias

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...

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Related Experiment Video

Updated: Jun 23, 2026

Conducting Respiratory Oscillometry in an Outpatient Setting
14:49

Conducting Respiratory Oscillometry in an Outpatient Setting

Published on: April 8, 2022

How often does spirometry testing induce cardiac arrhythmias?

Claudio Gil Araújo1, Lauro C Vianna

  • 1Clínica de Medicina do Exercício - CLINIMEX, Rio de Janeiro, Brazil. cgaraujo@iis.com.br

Primary Care Respiratory Journal : Journal of the General Practice Airways Group
|May 2, 2009
PubMed
Summary
This summary is machine-generated.

Spirometry is a safe medical procedure, rarely causing significant cardiac arrhythmias. While some arrhythmias occur, they are typically brief and simple, with spirometry sometimes revealing issues missed by exercise tests.

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Area of Science:

  • Cardiology
  • Pulmonary Medicine
  • Diagnostic Procedures

Background:

  • Cardiac arrhythmias can be triggered by physiological stress.
  • Spirometry and cardiopulmonary exercise testing (CPET) involve significant physiological maneuvers.
  • Understanding arrhythmia induction during these tests is crucial for patient safety.

Purpose of the Study:

  • To determine the incidence and types of cardiac arrhythmias induced by spirometry maneuvers.
  • To compare arrhythmia induction between spirometry and CPET.

Main Methods:

  • Electrocardiogram (ECG) monitoring during spirometry and CPET in 735 subjects.
  • Subjects underwent spirometry before a maximal CPET.
  • ECG data were reviewed by a single physician.

Main Results:

  • 64% of subjects experienced arrhythmias during spirometry or CPET.
  • Supraventricular arrhythmias were most common (60%).
  • Spirometry alone induced arrhythmias in 10% of subjects, including non-sustained supraventricular tachycardia.

Conclusions:

  • Spirometry is a safe diagnostic tool regarding arrhythmia induction.
  • Spirometry-induced arrhythmias are generally simple and transient.
  • ECG monitoring during spirometry can detect arrhythmias not observed during maximal exercise testing.