Related Experiment Video

Updated: Aug 15, 2026

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing
12:45

Benefits of Cardiac Resynchronization Therapy in an Asynchronous Heart Failure Model Induced by Left Bundle Branch Ablation and Rapid Pacing

Published on: December 11, 2017

Pre-operative prophylactic transvenous cardiac pacing for bifascicular heart block

A P Boezaart, C W Clinton, A Stanley

    South African Journal of Surgery. Suid-Afrikaanse Tydskrif Vir Chirurgie
    |July 1, 1989
    PubMed

    Insights

    Bifascicular block, a heart condition, can progress to complete heart block during non-cardiac surgery. Prophylactic pacing may be needed for patients with bifascicular block, especially with other risk factors.

    Area of Science:

    • Cardiology
    • Cardiac Electrophysiology

    Background:

    • Right bundle-branch block with left axis deviation, termed bifascicular block, is often not considered an indication for prophylactic pacing in non-cardiac surgery.
    • The management of bifascicular block in the peri-operative setting requires careful consideration.

    Observation:

    • Five cases are presented where patients with bifascicular block experienced peri-operative progression to complete heart block.
    • This progression highlights a potential risk associated with non-cardiac surgery in this patient population.

    Findings:

    • Bifascicular block can progress to complete heart block during the peri-operative period.
    • The risk is elevated in patients with additional cardiovascular conditions, advanced age, or those undergoing surgery involving vagal stimulation.

    Implications:

    • Prophylactic pacing should be considered for patients with bifascicular block, particularly those with comorbidities or undergoing specific surgical procedures.
    • Pre-operative cardiological consultation is crucial for assessing the need for pacing in patients with bifascicular block before non-cardiac surgery.

    More Related Videos

    Optimization of Transesophageal Atrial Pacing to Assess Atrial Fibrillation Susceptibility in Mice08:05

    Optimization of Transesophageal Atrial Pacing to Assess Atrial Fibrillation Susceptibility in Mice

    Published on: June 29, 2022

    Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System10:17

    Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System

    Published on: April 11, 2025

    Related Concept Videos

    Cardiac Catheterization I: Pre-Procedure Overview01:28

    Cardiac Catheterization I: Pre-Procedure Overview

    Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...
    Cardiac Catheterization IV: Nursing Management01:26

    Cardiac Catheterization IV: Nursing Management

    Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...
    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...
    Dysrhythmias VI: Management of Dysrhythmias01:25

    Dysrhythmias VI: Management of Dysrhythmias

    Dysrhythmia management involves a multifaceted approach, incorporating pharmacological treatments, medical procedures, surgical interventions, lifestyle modifications, and patient education.Pharmacological ManagementAntiarrhythmic Drugs:Class I (Sodium Channel Blockers): This class includes quinidine and procainamide, which reduce the speed of impulse conduction in the heart, stabilize the cardiac membrane, and control arrhythmias. Quinidine and procainamide are Class IA agents that prolong the...
    Cardiomyopathy VII: Pre and Post Operative Nursing Management01:28

    Cardiomyopathy VII: Pre and Post Operative Nursing Management

    Patients with hypertrophic cardiomyopathy (HCM) and left ventricular outflow tract (LVOT) obstruction who remain symptomatic despite optimal medical therapy may undergo a septal myectomy (Morrow procedure). This procedure involves excising a portion of the hypertrophied septum below the aortic valve using a heart-lung machine to improve blood flow through the LVOT. Effective preoperative and postoperative nursing management ensures successful patient outcomes, minimizes complications, and...