Abstract
We investigated the occurrence of renal subcapsular hematoma and perirenal hematoma in 123 patients with kidney stones undergoing ESWL from January 2005 to May 2009 at our hospital. We examined risk factors for hematoma by comparing 28 patients with renal subcapsular hematoma or perirenal hematoma and 95 patients without hematoma. Perirenal hematoma occurred in 4 patients, among whom 3 had hypertension and were on antihypertensives. A BMI ≧25 kg/m2 was significantly more common in the hematoma group than the group without hematoma. Also, a study of 180 ESWL patients revealed significant elevation of blood pressure during the procedure in the hematoma group. Risk factors for hematoma were a BMI ≧25 kg/m2 and elevation of systolic blood pressure by ≧30 mmHg during ESWL. When conducting ESWL, attention should be paid to changes of blood pressure, as well as the patient‘s history, medications, and degree of obesity.
