Prediction of the optimal depth for superior vena cava cannulae with cardiac computed tomography during minimally invasive cardiac surgery: a prospective observational cohort study

Autor: Ji-Hyun Chin, Eun-Ho Lee, Jong-Il Kim, In-Cheol Choi
Jazyk: angličtina
Rok vydání: 2017
Předmět:
Zdroj: BMC Anesthesiology, Vol 17, Iss 1, Pp 1-7 (2017)
Druh dokumentu: article
ISSN: 1471-2253
DOI: 10.1186/s12871-017-0347-x
Popis: Abstract Background The determination of the adequate depth of superior vena cava cannulae during minimally invasive cardiac surgery is important for warranting venous drainage and preventing complications during cardiopulmonary bypass. We investigated whether preoperative cardiac computed tomography might be useful for predicting the optimal depth of superior vena cava cannulae. Methods The patients who required superior vena cava cannulation and had cardiac tomographic image among those scheduled to undergo a minimally invasive cardiac surgery were evaluated. The distance between the upper border of the clavicular sternal head and the superior vena cava-right atrium junction was measured on cardiac computed tomography. Equivalence test for the difference between the distance measured on cardiac computed tomography and the distance verified by surgeon’s direct inspection in the surgical field was performed. The range −1 cm to 1 cm was predefined as an equivalence region. In addition, the distances between the upper border of the clavicular sternal head and the carina level on chest radiography were measured to compare the relative position of carina with regard to the superior vena cava-right atrium junction. Results A total of 46 patients were evaluated. The distance from the upper border of the clavicular sternal head to the superior vena cava-right atrium junction measured on cardiac computed tomography and the distance verified by surgeon’s inspection was equivalent, with the 95% confidence interval for the mean difference within the equivalence region (0.05–0.52, P
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