Masquerading Bundle Branch Block: A Poor Prognostic Sign Revisited.
Suheil Dhanse1, Hashir Kareem2, Tom Devasia3
1Registrar, Department of Cardiology, KMC Manipal, Manipal University , Manipal, Karnataka, India .
Journal of Clinical and Diagnostic Research : JCDR
|October 30, 2016
Summary
Masquerading bundle branch block on ECG indicates severe heart disease and poor prognosis. This rare finding, mimicking both RBBB and LBBB patterns, highlights critical conduction system disease.
Area of Science:
- Cardiology
- Electrophysiology
Background:
- Masquerading bundle branch block (mBBB) is a rare ECG finding.
- It signifies severe, diffuse conduction system disease and a poor prognosis.
Observation:
- ECG presented with a Right Bundle Branch Block (RBBB) pattern in precordial leads and a Left Bundle Branch Block (LBBB) pattern in limb leads.
- This pattern is almost invariably associated with significant underlying cardiac pathology.
Findings:
- The case involved a 68-year-old male with progressive dyspnea.
- ECG revealed mBBB, and coronary angiography showed severe Triple Vessel Disease (TVD).
Implications:
- Awareness of mBBB is crucial as it's a marker for adverse cardiac outcomes.
- Early surgical intervention, such as Coronary Artery By-Pass Grafting (CABG), is often indicated.
- The case underscores the severity associated with mBBB, with the patient deteriorating and dying before surgery.
More Related Videos
07:25Predicting Amputation using Local Circulating Mononuclear Progenitor Cells in Angioplasty-treated Patients with Critical Limb Ischemia
Published on: September 22, 2020
3.8K
04:49Author Spotlight: Investigating the Underlying Mechanisms of Right Ventricular Failure in Pulmonary Hypertension
Published on: June 14, 2024
1.3K
Related Concept Videos
01:23Mitral Stenosis II: Clinical features and Diagnostic Tests
381
Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
381
01:21Aneurysm II: Clinical Manifestations and Diagnostic Studies
475
Thoracic, aortic arch and abdominal aneurysms are significant vascular conditions that can present with various clinical manifestations and lead to serious complications. Understanding these manifestations and the appropriate diagnostic studies is essential for effective management and treatment.Thoracic Aortic AneurysmsThoracic aortic aneurysms often remain asymptomatic until they reach a size that impinges on adjacent structures. They typically cause deep, diffuse chest pain that radiates to...
475
01:18Dysrhythmias IV: Characteristics of Bradyarrhythmias
723
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...
723
01:22Heart Failure Drugs: β-Blockers
1.1K
β-adrenergic antagonists, commonly known as β-blockers, block the effects of sympathetic neurotransmitters such as noradrenaline (NA) and adrenaline (ADR). They have several beneficial effects in heart failure treatment. They reduce heart rate, the force of contraction, and cardiac muscle relaxation. They also slow the atrial-ventricular conduction rate and raise the threshold for arrhythmias. The concentration of β-blockers determines their effects on bronchodilation,...
1.1K
01:22Aortic Regurgitation II: Clinical Features and Diagnostic Tests
752
Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
752
01:22Mitral Stenosis I: Introduction
1.1K
Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
1.1K