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Bedside evaluation of postoperative sinus node function in children

S M Yabek, B F Akl, W Berman

    The Journal of Thoracic and Cardiovascular Surgery
    |May 1, 1981
    PubMed
    Summary
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    Postoperative sinus node dysfunction in children often follows congenital heart defect surgery. This study presents a safe bedside method to evaluate sinus node function using atrial electrodes, yielding data comparable to invasive methods.

    Area of Science:

    • Pediatric Cardiology
    • Cardiac Surgery
    • Electrophysiology

    Background:

    • Sinus node dysfunction is a common complication in children after surgical correction of congenital heart defects.
    • Accurate and timely assessment of sinus node function is crucial for managing these patients postoperatively.

    Purpose of the Study:

    • To evaluate the efficacy of a simple and safe bedside method for assessing postoperative sinus node function in pediatric patients.
    • To compare bedside measurements of sinoatrial conduction times (SACTs) and corrected sinus node recovery times (CSNRTs) with conventional methods.

    Main Methods:

    • Utilized atrial epicardial electrodes placed near the sinus node during surgery in 25 children.
    • Measured sinoatrial conduction times (SACTs) and corrected sinus node recovery times (CSNRTs) within 3 days post-operation.

    Related Experiment Videos

  • Compared postoperative data with preoperative evaluations in a subset of patients.

    • Main Results:

    • Twenty children (Group 1) exhibited normal sinus node function with mean SACTs of 122 ± 33 msec and CSNRTs of 165 ± 54 msec.
    • Five children (Group 2) demonstrated sinus node dysfunction, with abnormal SACTs (≥230 msec) or sinus node entrance block.
    • Bedside measurements showed no significant difference compared to preoperative assessments (p > 0.05).

    Conclusions:

    • Bedside evaluation of sinus node function using atrial epicardial electrodes is a feasible and safe approach in pediatric cardiac surgery patients.
    • This method provides reliable data comparable to invasive techniques used during cardiac catheterization.
    • Early detection of sinus node dysfunction allows for timely management and improved patient outcomes.