Mahaim type preexcitation

Jump to navigation Jump to search

WikiDoc Resources for Mahaim type preexcitation

Articles

Most recent articles on Mahaim type preexcitation

Most cited articles on Mahaim type preexcitation

Review articles on Mahaim type preexcitation

Articles on Mahaim type preexcitation in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Mahaim type preexcitation

Images of Mahaim type preexcitation

Photos of Mahaim type preexcitation

Podcasts & MP3s on Mahaim type preexcitation

Videos on Mahaim type preexcitation

Evidence Based Medicine

Cochrane Collaboration on Mahaim type preexcitation

Bandolier on Mahaim type preexcitation

TRIP on Mahaim type preexcitation

Clinical Trials

Ongoing Trials on Mahaim type preexcitation at Clinical Trials.gov

Trial results on Mahaim type preexcitation

Clinical Trials on Mahaim type preexcitation at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Mahaim type preexcitation

NICE Guidance on Mahaim type preexcitation

NHS PRODIGY Guidance

FDA on Mahaim type preexcitation

CDC on Mahaim type preexcitation

Books

Books on Mahaim type preexcitation

News

Mahaim type preexcitation in the news

Be alerted to news on Mahaim type preexcitation

News trends on Mahaim type preexcitation

Commentary

Blogs on Mahaim type preexcitation

Definitions

Definitions of Mahaim type preexcitation

Patient Resources / Community

Patient resources on Mahaim type preexcitation

Discussion groups on Mahaim type preexcitation

Patient Handouts on Mahaim type preexcitation

Directions to Hospitals Treating Mahaim type preexcitation

Risk calculators and risk factors for Mahaim type preexcitation

Healthcare Provider Resources

Symptoms of Mahaim type preexcitation

Causes & Risk Factors for Mahaim type preexcitation

Diagnostic studies for Mahaim type preexcitation

Treatment of Mahaim type preexcitation

Continuing Medical Education (CME)

CME Programs on Mahaim type preexcitation

International

Mahaim type preexcitation en Espanol

Mahaim type preexcitation en Francais

Business

Mahaim type preexcitation in the Marketplace

Patents on Mahaim type preexcitation

Experimental / Informatics

List of terms related to Mahaim type preexcitation

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Overview

Mahaim type pre-excitation is a form of ventricular pre-excitation characterized by a normal PR interval and a long QRS interval with initial slurring of or slow deflection of the QRS complex (a delta wave is present).[1] [2] [3]

Pathophysiology

In Mahaim type pre-excitation, the atrial impulse travel to the ventricle via the Mahaim fibers which connect the atrioventricular node directly to the right ventricular wall (nodoventricular pathway) or to the right bundle branch of the His bundle (nodofascicular pathway).

Epidemiology and Demographics

Diagnosis

Electrocardiogram

  • There is a delta wave with a normal PR interval.
  • In older patients there can be a prolonged conduction down the accessory pathway resulting in a normal PR interval in the presence of WPW which is tough to distinguish from Mahaim fibers.

Shown below is an EKG of a 24 years old man with Mahaim type of preexcitation.



Shown below is an EKG of the same patient after Mahaim bundle ablation


References

  1. Sternick EB. Mahaim Fibre Tachycardia: Recognition and Management, Indian Pacing Electrophysiol J. 2003 Apr–Jun; 3 (2): 47–59.
  2. Hanon S, Shapiro M, Schweitzer P. Early history of the pre-excitation syndrome, Europace (2005) 7, 28-33.
  3. Silva MA, Berardi G, Kraemer A, Nadalin E, Jorge JCM, Catheter Ablation of Atriofascicular Mahaim Fibers Guided by the Activation Potential, Arq Bras Cardiol, volume 80 (no 1), 66-70, 2003.


Template:WikiDoc Sources