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Related Concept Videos

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.
Increased pulse rate01:17

Increased pulse rate

Tachycardia is a condition marked by an abnormally fast or irregular heart rate, surpassing the typical resting rate. In adults, tachycardia is characterized by a pulse rate ranging from 100 to 180 beats per minute. The increased heart rate can result in inadequate blood flow to various body parts, ultimately diminishing the oxygen supply to organs and tissues.
Many factors can elevate the risk of developing tachycardia. These include advanced age, a family history of arrhythmias, and an...
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...
Cardiovascular System Abnormal Findings I: Inspection and Palpation01:29

Cardiovascular System Abnormal Findings I: Inspection and Palpation

In a cardiovascular examination, inspection and palpation are crucial for identifying abnormalities.
Abnormal findings observed during an inspection
Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

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...
Pulse rhythm01:30

Pulse rhythm

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 muscle...

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Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice
06:07

Analyzing Long-Term Electrocardiography Recordings to Detect Arrhythmias in Mice

Published on: May 23, 2021

Spotting the complex tachycardia.

Ahmed Mahdi1, Simon Anderson, Simon Carley

  • 1Manchester Royal Infirmary, Manchester, United Kingdom. ahmed.mahdi@doctors.net.uk

Emergency Medicine Journal : EMJ
|March 23, 2010
PubMed
Summary
This summary is machine-generated.

Varicella zoster myocarditis can cause ventricular tachyarrhythmia, presenting diagnostic challenges in emergency settings. This case highlights the unpredictable nature and management difficulties of this rare cardiac complication.

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A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis
18:11

A Research Method For Detecting Transient Myocardial Ischemia In Patients With Suspected Acute Coronary Syndrome Using Continuous ST-segment Analysis

Published on: December 28, 2012

Area of Science:

  • Cardiology
  • Infectious Diseases
  • Emergency Medicine

Background:

  • Myocarditis, inflammation of the heart muscle, can arise from various causes, including viral infections.
  • Varicella zoster virus (VZV) is a known cause of opportunistic infections, rarely manifesting as myocarditis.
  • Myocarditis presents with diverse clinical symptoms, complicating early diagnosis and treatment, especially in emergency departments.

Purpose of the Study:

  • To report a case of ventricular tachyarrhythmia secondary to varicella zoster myocarditis.
  • To review the literature on the clinical presentation, diagnosis, and management of VZV-induced myocarditis.
  • To emphasize the challenges in managing myocarditis within the emergency setting.

Main Methods:

  • Case presentation of a young male with ventricular tachyarrhythmia.
  • Comprehensive literature review focusing on varicella zoster myocarditis.
  • Analysis of clinical sequelae, diagnostic criteria, and therapeutic strategies.

Main Results:

  • The patient experienced ventricular tachyarrhythmia attributed to varicella zoster myocarditis.
  • Literature review revealed inconsistent clinical presentations and unpredictable outcomes for myocarditis.
  • Effective management strategies for VZV myocarditis in emergency settings remain challenging.

Conclusions:

  • Varicella zoster myocarditis is a rare but serious complication that can lead to life-threatening arrhythmias.
  • Early recognition and prompt management are crucial, despite diagnostic uncertainties.
  • Further research is needed to establish standardized diagnostic and therapeutic protocols for VZV myocarditis.