maze procedure

Also found in: Dictionary, Thesaurus, Legal, Encyclopedia, Wikipedia.

mini-maze procedure

A procedure used to manage atrial fibrillation; the term maze refers to the maze-like incisions made in the atria, which eliminate AF as the resulting scars block abnormal (atrial macroreentry) electrical circuits. The procedure prevents AF in 90% of patients and preserves sinus rhythm; post-surgical morbidity and mortality of the classic procedure is relatively high.
All of the maze procedures consist of creating long and complex linear lesions in both atria to channel impulses along narrow pathways. Traditionally, maze and smaller mini-maze procedures require cutting and an endocardial approach; more recently, some permutations have included epicardial approach, beating heart procedures and microwave or radiofrequency ablation (RFA). The current gold standard is epicardial, RFA and beating heart, all of which reduce operative time, mortality and morbidity, and time to patient discharge.

maze procedure

Cox procedure Heart surgery A procedure used to manage A Fib. See Atrial fibrillation. Cf Corridor procedure.

MAZE procedure

A surgical treatment for atrial fibrillation, in which the right and left pulmonary veins are isolated and the left atrial appendix is surgically removed. Incisions are made to disrupt the irregular fibrillatory flow of electricity through the atrium, constructing a path shaped like a labyrinth, which directs energy solely from the sinoatrial node to the atrioventricular node. The procedure is often performed during other heart surgeries, e.g., coronary artery bypass grafting.
See also: procedure
References in periodicals archive ?
The maze procedure was used to periodically explore reading comprehension.
For the posttest, one might argue that a combination of vocabulary and maze together would help the teacher to predict better than the vocabulary measure alone; however, given the time-consuming nature of constructing the maze task, coupled with the small proportion of variance added to the equation by the task, we find little reason to recommend the addition of the maze procedure to the vocabulary measure.
In the past three decades, and particularly in the time since the initial maze procedure was carried out on a patient in 1987, surgical therapy for patients with AF has seen extensive advances.
Improved success rate of the maze procedure in mitral valve disease by new criteria for patient selection.
both electrophysiology cardiologists, performed the robotic-assisted maze procedure on March 2 on a 66-year-old woman from Huntington Woods.
If surgery is planned, correction of the arrhythmia with MAZE procedure, which isolates the arrhythmogenic foci, at the time of myectomy is an option to consider.
Yet another, in patients who require mitral valve or other cardiac surgical procedures, is to combine the operation with a surgical maze procedure, which results in permanent abolition of atrial fibrillation in close to 90% of patients.
The pattern of lesions is modeled after the highly efficacious Cox Maze procedure.
BCVI physicians are treating a-fib with the Hybrid Maze procedure in which small incisions are made on the sides of the chest to access and place scar lines around the pulmonary veins which stop the irregularity.
Between sips of coffee, he chats casually about how surgeons implanted one artificial valve, repaired a second valve, sewed up a small hole between the two upper heart chambers and did a maze procedure to stop the arrhythmia that hindered his heartbeat.
Additionally, the board is dedicated to ensuring that simplified techniques for performing surgical ablation do not compromise the clinical efficacy of the gold-standard surgical Maze procedure established by Dr.