[Pericardial window by videothoracoscope in the treatment of pericardial effusion and tamponade].

INTRODUCTION: Malignancies are the most common causes of pericardial effusion (PE) or tamponade (PT). Lung and breast carcinoma are the most frequent. The treatment of PE consists in the performance of drainage and/or pericardial window (PW) usually subxiphoid. In the present study we describe our experience with the PW by videothoracoscopic (VATS) approach, a procedure scarcely referred to in the literature.

OBJECTIVE: To evaluate the efficacy of the PW by videothoracoscopic (VATS) approach in the treatment of PE and/or PT.

PATIENTS AND METHOD: Retrospective study of 12 patients with PE submitted to PW by VATS in a period of 10 years, since February 1994 to October 2004. The surgical procedure employed was VATS, under general anesthesia, selective intubation and lateral decubitus. We systematically performed a PW anterior to phrenic nerve and studied pleural and pericardial fluids. Talc pleurodesis was added if neoplastic pleural effusion was objectived by a previous needle thoracocentesis and cytological analysis of pleural fluid. A single chest drain (24 F) was inserted after surgery, and removed when daily debit was under 100 ml.

RESULTS: 12 patients were operated on, 4 men and 8 women, mean age of 58.6 years (range, 32-78). There was no surgical mortality. There were 8 cases of PT. The causes of PE were: breast carcinoma in 8 cases, lung carcinoma in 3 cases and infectious origin in one case. Mean duration of surgical procedure was 30 minutes. All the patients had concomitant pleural effusion. Surgical approach was by the left side in all the cases. Talc pleurodesis was added in 8 cases of the 12 that had pleural effusion, in the 8 cases cytological analysis had shown paraneoplastic origin. Chest drain was removed after a mean period of 3.5 days. There was no mortality associated with the procedure. Mean stay was 3.8 days. Mean survival was 12 months for breast cancer patients and 4 months for lung cancer.

CONCLUSIONS: PW by VATS is a suitable procedure for the management of massive PE or PT. In our experience this procedure showed no mortality and minimal morbidity, providing symptomatic improvement (in PE and pleural efusión) in all the patients. This approach also makes possible the study of pleural cavity, the obtaining of parietal pleura samples and, if necessary, the performance of talc pleurodesis.