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Ann Thorac Surg 2005;80:439-442
© 2005 The Society of Thoracic Surgeons

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Original article: General thoracic

Preoperative Detection of Pleural Adhesions by Chest Ultrasonography

Department of Surgery (II), University of Fukui Faculty of Medical Sciences, Fukui, Japan

Accepted for publication March 4, 2005.

^_* Addresss reprint requests to Dr Sasaki, Department of Surgery (II), University of Fukui, Faculty of Medical Sciences, 23-3 Shimoaizuki, Matsuoka Fukui, Japan 911-1104 (Email: masato{at}fmsrsa.fukui-med.ac.jp).

BACKGROUND: The presence of pleural adhesions may render video-assisted thoracoscopic surgery difficult or impossible. The aim of this study was to assess the value of chest ultrasonography in the detection of pleural adhesions prior to thoracotomy.

METHODS: Between October 2001 and September 2002, 42 consecutive patients undergoing thoracotomies (including video-assisted thoracic surgery) were evaluated with chest ultrasonography. These patients underwent a preoperative ultrasonic examination of the chest wall using a 7-MHz linear ultrasound probe at 7 points along the chest wall. We measured the movement of the visceral pleural slide.

RESULTS: When restricted viscera sliding was defined as less than 1 cm of excursion at the upper thoracic wall during exaggerated respirations, ultrasonography demonstrated a sensitivity of 63.6%, a specificity of 79.4%, a negative predictive value of 87.7%, a positive predictive value of 50.0%, and an overall accuracy of 75.6%. When restricted viscera sliding was defined as less than 2 cm of excursion at the lower thoracic wall during exaggerated respirations, ultrasonography demonstrated a sensitivity of 81.5%, a specificity of 81.0%, a negative predictive value of 96.0%, a positive predictive value of 44.0%, and an overall accuracy of 81.0%.

CONCLUSIONS: Chest ultrasonography is moderately accurate in detecting the presence and location of pleural adhesions. Use of preoperative chest sonographic findings to plan trocar placement and to determine the need for an open approach is valuable in helping prevent visceral injury and facilitating video-assisted thoracoscopic surgery.

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