The Experts below are selected from a list of 168 Experts worldwide ranked by ideXlab platform

Shiaki Kawada - One of the best experts on this subject based on the ideXlab platform.

  • Optimal position of atrial epicardial leads for temporary pacing in infants after cardiac surgery.
    The Annals of Thoracic Surgery, 2001
    Co-Authors: Ichiro Kashima, Ryo Aeba, Toshiyuki Katogi, Shiaki Kawada
    Abstract:

    Abstract Background . The atrial epicardial wall of pediatric patients was topographically assessed to identify the optimal position for temporary atrial pacing. Methods . Unipolar electrodes were fixed at the cephalic wall between the right and left atrial appendages, the Interatrial Groove, and the right atrial appendage of fifteen pediatric patients who underwent definitive surgical repair. The performance of the three electrodes in terms of pacing patterns and six combinations of bipolar pacing were evaluated in terms of the pacing threshold, P-wave amplitude, slew rate, and lead impedance. Results . Unipolar pacing of the right atrial appendage showed a significantly higher threshold than the other groups. A bipolar configuration of the cephalic atrial wall and Interatrial Groove had a significantly higher P-wave amplitude than groups without the electrode at the cephalic atrial wall, and a significantly higher slew rate than a unipolar configuration of the atrial appendage. Conclusions . Bipolar pacing with the negative electrode at the cephalic atrial wall and the indifferent electrode at the Interatrial Groove is the most efficient method for pediatric patients.

  • Optimal positioning of temporary epicardial atrial pacing leads after cardiac surgery
    The Japanese Journal of Thoracic and Cardiovascular Surgery, 2001
    Co-Authors: Ichiro Kashima, Hankei Shin, Ryohei Yozu, Shiaki Kawada
    Abstract:

    Objectives: Atrial pacing plays an important role in preventing low output syndrome and arrhythmia after cardiac surgery. We studied the optimal positioning for temporary epicardiac atrial pacing. Methods: The performance of temporary epicardiac atrial pacing leads was examined after 13 cases of elective coronary artery bypass grafting between October 1999 and January 2000. Two bipolar electrode leads were used—1 on the cephalic atrial wall between the left and right atrial appendages, where the Bachmann bundle indwells (site A), and the other on the Interatrial Groove (site B). To assess pacing performance on postoperative days 1, 2, and 7, we measured 3 pacing patterns—bipolar use of sites A and B leads, and combined use of the 2 with the site A lead acting as the negative electrode and the site B lead as the ground. The pacing threshold was measured at a 0.5 ms pulse width, using the P wave amplitude and slew rate as indicators of sensing performance. Results: Bipolar pacing both at sites A and A-B was superior to that at site B in pacing threshold and sensing parameters. Conclusions: The negative electrode at site A is mandatory for high atrial pacing and sensing performance.

Ichiro Kashima - One of the best experts on this subject based on the ideXlab platform.

  • Optimal position of atrial epicardial leads for temporary pacing in infants after cardiac surgery.
    The Annals of Thoracic Surgery, 2001
    Co-Authors: Ichiro Kashima, Ryo Aeba, Toshiyuki Katogi, Shiaki Kawada
    Abstract:

    Abstract Background . The atrial epicardial wall of pediatric patients was topographically assessed to identify the optimal position for temporary atrial pacing. Methods . Unipolar electrodes were fixed at the cephalic wall between the right and left atrial appendages, the Interatrial Groove, and the right atrial appendage of fifteen pediatric patients who underwent definitive surgical repair. The performance of the three electrodes in terms of pacing patterns and six combinations of bipolar pacing were evaluated in terms of the pacing threshold, P-wave amplitude, slew rate, and lead impedance. Results . Unipolar pacing of the right atrial appendage showed a significantly higher threshold than the other groups. A bipolar configuration of the cephalic atrial wall and Interatrial Groove had a significantly higher P-wave amplitude than groups without the electrode at the cephalic atrial wall, and a significantly higher slew rate than a unipolar configuration of the atrial appendage. Conclusions . Bipolar pacing with the negative electrode at the cephalic atrial wall and the indifferent electrode at the Interatrial Groove is the most efficient method for pediatric patients.

  • Optimal positioning of temporary epicardial atrial pacing leads after cardiac surgery
    The Japanese Journal of Thoracic and Cardiovascular Surgery, 2001
    Co-Authors: Ichiro Kashima, Hankei Shin, Ryohei Yozu, Shiaki Kawada
    Abstract:

    Objectives: Atrial pacing plays an important role in preventing low output syndrome and arrhythmia after cardiac surgery. We studied the optimal positioning for temporary epicardiac atrial pacing. Methods: The performance of temporary epicardiac atrial pacing leads was examined after 13 cases of elective coronary artery bypass grafting between October 1999 and January 2000. Two bipolar electrode leads were used—1 on the cephalic atrial wall between the left and right atrial appendages, where the Bachmann bundle indwells (site A), and the other on the Interatrial Groove (site B). To assess pacing performance on postoperative days 1, 2, and 7, we measured 3 pacing patterns—bipolar use of sites A and B leads, and combined use of the 2 with the site A lead acting as the negative electrode and the site B lead as the ground. The pacing threshold was measured at a 0.5 ms pulse width, using the P wave amplitude and slew rate as indicators of sensing performance. Results: Bipolar pacing both at sites A and A-B was superior to that at site B in pacing threshold and sensing parameters. Conclusions: The negative electrode at site A is mandatory for high atrial pacing and sensing performance.

Lawrence H Cohn - One of the best experts on this subject based on the ideXlab platform.

  • optimal approach to the mitral valve dissection of the Interatrial Groove
    The Annals of Thoracic Surgery, 1992
    Co-Authors: Robert I Larbalestier, Richard B Chard, Lawrence H Cohn
    Abstract:

    Abstract Surgical exposure of the mitral valve has challenged surgeons for more than 30 years. Many ingenious, but often complex approaches have been devised during this time. Using the dissection of the Interatrial Groove to bring the left atrial incision more anterior and medial, we have achieved excellent exposure in more than 300 mitral valve procedures. This simple technique does not lengthen the procedure and is not associated with an increased risk of either early or late morbidity.

Hankei Shin - One of the best experts on this subject based on the ideXlab platform.

  • Optimal positioning of temporary epicardial atrial pacing leads after cardiac surgery
    The Japanese Journal of Thoracic and Cardiovascular Surgery, 2001
    Co-Authors: Ichiro Kashima, Hankei Shin, Ryohei Yozu, Shiaki Kawada
    Abstract:

    Objectives: Atrial pacing plays an important role in preventing low output syndrome and arrhythmia after cardiac surgery. We studied the optimal positioning for temporary epicardiac atrial pacing. Methods: The performance of temporary epicardiac atrial pacing leads was examined after 13 cases of elective coronary artery bypass grafting between October 1999 and January 2000. Two bipolar electrode leads were used—1 on the cephalic atrial wall between the left and right atrial appendages, where the Bachmann bundle indwells (site A), and the other on the Interatrial Groove (site B). To assess pacing performance on postoperative days 1, 2, and 7, we measured 3 pacing patterns—bipolar use of sites A and B leads, and combined use of the 2 with the site A lead acting as the negative electrode and the site B lead as the ground. The pacing threshold was measured at a 0.5 ms pulse width, using the P wave amplitude and slew rate as indicators of sensing performance. Results: Bipolar pacing both at sites A and A-B was superior to that at site B in pacing threshold and sensing parameters. Conclusions: The negative electrode at site A is mandatory for high atrial pacing and sensing performance.

Ryohei Yozu - One of the best experts on this subject based on the ideXlab platform.

  • Optimal positioning of temporary epicardial atrial pacing leads after cardiac surgery
    The Japanese Journal of Thoracic and Cardiovascular Surgery, 2001
    Co-Authors: Ichiro Kashima, Hankei Shin, Ryohei Yozu, Shiaki Kawada
    Abstract:

    Objectives: Atrial pacing plays an important role in preventing low output syndrome and arrhythmia after cardiac surgery. We studied the optimal positioning for temporary epicardiac atrial pacing. Methods: The performance of temporary epicardiac atrial pacing leads was examined after 13 cases of elective coronary artery bypass grafting between October 1999 and January 2000. Two bipolar electrode leads were used—1 on the cephalic atrial wall between the left and right atrial appendages, where the Bachmann bundle indwells (site A), and the other on the Interatrial Groove (site B). To assess pacing performance on postoperative days 1, 2, and 7, we measured 3 pacing patterns—bipolar use of sites A and B leads, and combined use of the 2 with the site A lead acting as the negative electrode and the site B lead as the ground. The pacing threshold was measured at a 0.5 ms pulse width, using the P wave amplitude and slew rate as indicators of sensing performance. Results: Bipolar pacing both at sites A and A-B was superior to that at site B in pacing threshold and sensing parameters. Conclusions: The negative electrode at site A is mandatory for high atrial pacing and sensing performance.