Relationship between intraoperative transoesophageal echocardiography findings and perfusion lung scintigraphy results on first postoperative day.
BACKGROUND
Although intraoperative transoesophageal echocardiography (TOE) has been used to detect the occurrence of echogenic macro- and/or microembolic phenomena during total hip arthroplasty (THA), no direct correlation between macroembolism and the formation of pulmonary embolism (PE) has been conclusively determined in early postoperative periods after THA.


METHODS
Sixty-two patients scheduled for primary THA were enrolled in this study. Intraoperative TOE images were continuously recorded on videotape and the echogenic events were evaluated throughout surgery. Perfusion lung scintigraphy was performed on the first postoperative day (POD1).


RESULTS
Perfusion lung scintigraphy revealed the existence of PE in nine (15%) of the 62 patients who underwent THA: five (25%) of 20 patients with cemented THA and four (10%) of 42 patients with non-cemented THA. The grading score of intraoperative TOE findings, including the amount of echogenic particles in right atrium, the longest time of echogenesis and the diameter of the largest echogenic particles, did not differ between the groups with and without PE. The sensitivity, specificity, and positive and negative predictive values for the detection of echogenic macroemboli for the prediction of the development of PE on POD1 were 0.78, 0.60, 0.25 and 0.94, respectively.


CONCLUSIONS
Intraoperative TOE monitoring did not predict the occurrence of PE on POD1.
Moriyama
M
M
Department of Anaesthesiology, Kurume University School of Medicine, 67 Asahimachi, Kurume, Fukuoka 830-0011, Japan.
Watanabe
S
S
Hiraki
T
T
Kano
T
T
Okawa
T
T
Ishibashi
M
M
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects*; D002484:Cementation; D017548:Echocardiography, Transesophageal; D004617:Embolism / Q000000981:diagnostic imaging* / Q000209:etiology; D005260:Female; D006801:Humans; D007431:Intraoperative Complications / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods*; D011182:Postoperative Care / Q000379:methods; D011237:Predictive Value of Tests; D011655:Pulmonary Embolism / Q000000981:diagnostic imaging / Q000209:etiology; D011877:Radionuclide Imaging; D012680:Sensitivity and Specificity; D014743:Videotape Recording