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Related Concept Videos

Pulse rhythm01:30

Pulse rhythm

931
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...
931
Dysrhythmias III: Characteristics of Dysrhythmias01:29

Dysrhythmias III: Characteristics of Dysrhythmias

124
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...
124
Dysrhythmias IV: Characteristics of Bradyarrhythmias01:18

Dysrhythmias IV: Characteristics of Bradyarrhythmias

122
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...
122
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

119
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...
119
Disturbances in Heart Rhythm01:29

Disturbances in Heart Rhythm

1.3K
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...
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Special considerations while measuring pulse01:13

Special considerations while measuring pulse

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Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
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Updated: Sep 14, 2025

Transesophageal Atrial Burst Pacing for Atrial Fibrillation Induction in Rats
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Wide Complex Irregular Rhythm in a Paced Patient: A Clinical Approach.

Haralambie Macovei1, Andrei Mihordea1, Cristina Andreea Adam1,2

  • 1Clinical Rehabilitation Hospital, Cardiovascular Rehabilitation Clinic, Pantelimon Halipa Street No. 14, 700661 Iasi, Romania.

Reports (MDPI)
|July 23, 2025
PubMed
Summary
This summary is machine-generated.

Diagnosing irregular wide complex rhythms in pacemaker patients is challenging. This case demonstrates a clinical approach to identify potential issues when device interrogation is unavailable.

Keywords:
ECGHolteraccidental fallsatrial fibrillationcardiac arrhythmiasdevice failureelderly patientheart conduction system diseasepacemaker malfunction

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Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Device Technology

Background:

  • Permanent pacemakers are crucial for managing bradyarrhythmias.
  • Wide complex rhythms in pacemaker patients can mimic serious arrhythmias.
  • Irregular wide complex rhythms pose diagnostic challenges, especially with potential lead issues.

Observation:

  • A 74-year-old female with a VVI pacemaker presented with palpitations and an irregular rhythm.
  • The patient had a recent fall impacting the pacemaker site.
  • A clinical, step-by-step diagnostic approach was employed.

Findings:

  • The irregular rhythm prompted evaluation beyond typical pacemaker-mediated rhythms.
  • The clinical assessment aimed to differentiate between lead malfunction and intrinsic arrhythmias.
  • The case underscores the importance of clinical reasoning in pacemaker management.

Implications:

  • Accurate diagnosis of wide complex irregular rhythms is vital for patient safety.
  • A systematic clinical approach can guide diagnosis when device interrogation is delayed.
  • Understanding pacemaker-device-heart interactions is key in complex cases.