Early complications of thoracic endoscopic sympathectomy: A prospective study of 940 procedures

Background. Thoracic endoscopic sympathectomy (TES) has become the surgical technique of choice for treating intractable palmar hyperhidrosis and is u sually considered as a simple and safe procedure. To evaluate the complicat ion rate of TES, we conducted a prospective study of peri- and postoperativ e complications. Methods. From 1995 to 1999, 467 consecutive patients were operated on for u pper limb hyperhidrosis. There were 164 men and 303 women, ranging in age f rom 15 to 59 years (mean 31 years). In all but 5 cases, the procedure was b ilateral. Eleven patients underwent a reoperation for failure; thus the tot al number of sympathectomies was 940. The procedure was performed in two st ages in 182 patients and in one stage in 267 patients. All patients were se en 1 month after the operation. Results. There was no mortality. The mean postoperative hospital stay was 2 .3 days in the group of patients who were operated on in two stages and 1.1 day in patients who were operated on in one stage. There were three major complications: one tear of the right subclavian artery and two chylothorace s. There were 25 cases (5.3%) of bleeding (300 to 600 mt) during dissection of the sympathetic trunk due to injury to an intercostal vein; in all case s it was controlled thoracoscopically. There were 12 pneumothoraces (1.3%) after removal of chest tubes. All of these were unilateral. Four required c hest drainage for a period of less than 24 hours. One patient had a mild pl eural effusion. Four patients had a unilateral partial Horner Syndrome (0.4 %) that disappeared within 3 months in 2 patients. The other 2 patients wer e lost to follow-up. One patient complained of rhinitis. Conclusions. Although morbidity was low, significant complications of TES o ccurred. Patients should be clearly warned that TES is not as minor a proce dure as usually asserted. Complications as well as adverse effects should b e considered when discussing this surgical indication. (C) 2001 by The Soci ety of Thoracic Surgeons.