The Absence of Atrial Contraction as a Predictor of Permanent Pacemaker Implantation after Maze Procedure with Cryoablation
The Korean Journal of Thoracic and Cardiovascular Surgery
;
: 163-170, 2017.
Article
in English
| WPRIM
| ID: wpr-111252
ABSTRACT
BACKGROUND:
The absence of atrial contraction (AC) after the maze procedure has been reported to cause subsequent annular dilatation and to increase the risk of embolic stroke. We hypothesized that the lack of AC could increase the risk of permanent pacemaker (PPM) implantation in patients undergoing the maze procedure.METHODS:
In 376 consecutive patients who had undergone a cryo-maze procedure and combined valve operation, recovery of AC was assessed at baseline and at immediate (≤2 weeks), early (≤1 year, 4.6±3.8 months), and late (>1 year, 3.5±1.1 years) postoperative stages.RESULTS:
With a median follow-up of 53 months, 10 patients underwent PPM implantation. Seven PPM implants were for sinus node dysfunction (pauses of 9.6±2.4 seconds), one was for marked sinus bradycardia, and two were for advanced/complete atrioventricular block. The median (interquartile range) time to PPM implantation was 13.8 (0.5–68.2) months. Our time-varying covariate Cox models showed that the absence of AC was a risk factor for PPM implantation (hazard ratio, 11.92; 95% confidence interval, 2.52 to 56.45; p=0.002).CONCLUSION:
The absence of AC may be associated with a subsequent risk of PPM implantation.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Atrial Fibrillation
/
Sick Sinus Syndrome
/
Bradycardia
/
Proportional Hazards Models
/
Risk Factors
/
Follow-Up Studies
/
Stroke
/
Cryosurgery
/
Dilatation
/
Atrioventricular Block
Type of study:
Etiology study
/
Observational study
/
Prognostic study
/
Risk factors
Limits:
Humans
Language:
English
Journal:
The Korean Journal of Thoracic and Cardiovascular Surgery
Year:
2017
Type:
Article
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