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27.03.2020 | Original Paper | Ausgabe 7/2020

The International Journal of Cardiovascular Imaging 7/2020

Routine postoperative computed tomography is superior to cardiac ultrasonography for predicting delayed cardiac tamponade

Zeitschrift:
The International Journal of Cardiovascular Imaging > Ausgabe 7/2020
Autoren:
Keisuke Kamada, Naohiro Wakabayashi, Hayato Ise, Sentaro Nakanishi, Natsuya Ishikawa, Hiroyuki Kamiya
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Abstract

Delayed cardiac tamponade (DCT) can be a fatal complication after cardiac surgery, but its early diagnosis and/or prediction is sometimes difficult. This study aimed to confirm the efficacy of postoperative computed tomography (CT) as routine examination compared with transthoracic echocardiography (TTE) for predicting DCT after cardiac surgery. This study was a retrospective single-center analysis of 485 consecutive patients undergoing cardiac surgery from January 2016 to July 2018 in our department. Among them, 237 patients were enrolled in this analysis after application of the exclusion criteria: minimally invasive surgery via small thoracotomy, death in the acute phase, and no CT 7 ± 3 days after surgery. Pericardial effusion (PE) was measured at the thickest part using CT and TTE. DCT was found in nine enrolled patients (3.8%). The mean PE on CT was 7.7 ± 5.5 mm in the no event group and 23.4 ± 5.7 mm in the DCT group (p = 0.026), whereas the mean PE on TTE was 6.2 ± 4.5 mm in the no event group and 10.8 ± 4.4 mm in the DCT group (p = 0.170). On multivariate analysis, PE greater than 20 mm on CT (Odds ratio, 13.93; 95% confidence interval 2.57–75.46; p = 0.002) was a significant predictor of DCT. The present study suggested that postoperative CT examination is superior to TTE for predicting DCT. If PE is less than 20 mm on CT, it could be treated conservatively; otherwise, preventive/therapeutic intervention should be considered.

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