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May 1, 1995Circulation

Delayed Improvement in Exercise Capacity With Restoration of Sinoatrial Node Response in Patients After Combined Treatment With Surgical Repair for Organic Heart Disease and the Maze Procedure for Atrial Fibrillation

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Why the study?

Does the addition of the Maze procedure to cardiac surgery improve exercise capacity in patients with organic heart disease and atrial fibrillation?

Population

25 patients with organic heart disease and atrial fibrillation.

Design

Cohort

Follow-up

1 year

Authors

JTJun TamaiYKY KosakaiTYTakao Yoshioka

Discussion

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Overview

Delayed VO2 gains after Maze surgery may tie to chronotropic recovery; hypothesis-generating and should not yet change practice.

Structured PICO

Does the addition of the Maze procedure to cardiac surgery improve exercise capacity in patients with organic heart disease and atrial fibrillation?

P
Population
25 patients (age 37 to 70 years) with organic heart disease (requiring valve surgery or closure of atrial septal defect) and atrial fibrillation.
I
Intervention
Maze procedure combined with surgical repair for organic heart disease (valve surgery or atrial septal defect closure).
O
Outcome
Exercise capacity (peak oxygen uptake, PVO2) and sinoatrial node response (heart rate) measured by cardiopulmonary exercise test at 1 month, 6 months, and 1 year after surgery.surrogate

Exercise capacity improves late (6 months) after combined Maze and cardiac surgery, which is dependent on the restoration of the sinoatrial node's chronotropic response to exercise.

Cite This Study

Tamai et al. (1995) studied this question.

synapsesocial.com/papers/6a1456012398cfa26a897f25https://doi.org/10.1161/01.cir.91.9.2392
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