Anatomic fitting studies of a total artificial heart in heart transplant recipients. Critical dimensions and prediction of fit

ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs
K FukamachiH Harasaki

Abstract

Anatomic fitting studies of the Cleveland Clinic-Nimbus total artificial heart were performed in 33 patients undergoing heart transplantation. The pump fit in the pericardial space in 20 men (80%) and 4 women (50%). There was no significant difference between the Fit and Non-Fit groups in external chest dimensions. Among 42 intrathoracic dimensions, the distance from the center of the mitral valve to the diaphragm (Fit: 5.6 +/- 2.2 cm, Non-Fit: 3.6 +/- 0.4 cm, p < 0.00001) and the distance from the caudal end of the pulmonary valve to the diaphragm (Fit: 9.4 +/- 1.6 cm, Non-Fit: 6.3 +/- 0.8 cm, p < 0.0001) were the most critical. To predict anatomic fit, an index (A x B x C) was obtained from chest X-ray measurements (A, the craniocaudal distance from the dorsal region of the 8th left rib to the left diaphragm; B, the maximum left chest width; and C, the maximum anteroposterior sternum-vertebrae dimension). The pump fit in 88.5% of the patients with an index above 1200 cm3, whereas it fit in only 14.3% of the patients with an index below 1200 cm3 (p < 0.001). This index was an easily obtainable, good predictor of anatomic fit.

Citations

Sep 29, 2009·The Journal of Heart and Lung Transplantation : the Official Publication of the International Society for Heart Transplantation·Kiyotaka FukamachiLeonard A R Golding
Dec 13, 2005·ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs·Stephan WeberWilliam A Smith
Jun 13, 2002·ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs·Kazuyoshi DoiKiyotaka Fukamachi
Nov 29, 2002·ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs·Stephan WeberWilliam A Smith
Oct 4, 2000·ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs·B ZhangT Masuzawa
Mar 7, 2013·Artificial Organs·Shaun D GregoryDaniel Timms
Aug 6, 2004·The International Journal of Artificial Organs·J S ShinB G Min
Sep 29, 2021·Artificial Organs·Sam EmmanuelChristopher Hayward

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