Clinical Features of Tuberculosis in Dialysis Patients / 대한신장학회잡지

BACKGROUND: A retrospective study of the clinical features of tuberculosis in patients undergoing maintenance dialysis was performed. METHODS: We reviewed medical records of patients. RESULTS: Among thirty-four patients, fourteen were on hemodialysis and twenty were on peritoneal dialysis. Mean age was 52.4 +/- 13.8 years, and interval between initiation of dialysis and onset of tuberculosis ranged from 1 to 146 months. There were 14 cases of pulmonary tuberculosis, 10 cases of tuberculous lymphadenitis, 4 cases of tuberculous peritonitis, 3 cases of miliary tuberculosis, 1 case of spinal tuberculosis, 1 case of tuberculous pericarditis, and 1 case of tuberculosis of thigh. Patients with pulmonary tuberculosis usually presented with dyspnea and malaise. But typical symptoms of tuberculosis such as fever, cough, sputum, and weight loss were rarely observed. Leukocytosis was absent but anemia, hypoalbuminemia and significant increase in acute phase reactants such as ferritin and C-reactive protein was obvious. Diagnosis was established by positive AFB in 3 patients, and in cases of extrapulmonaty tuberculosis, 13 among 20 patients were diagnosed by typical histologic characteristics on a tissue biopsy. Antituberculous treatment consisted of isoniazid, rifampicin, pyrazinamide, and occasionally ethambutol. And in several cases, incision and drainage, pericardiocentesis, or removal of peritoneal catheter were performed. Among the patients, just one recurrence was observed and four patients died while on antituberculous treatment. CONCLUSION: In dialysis patients, extrapulmonary tuberculosis is common and diagnosis of tuberculosis is difficult for its atypical manifestations. Therefore, early diagnosis and prompt initiation of treatment is needed in patients with high suspicion of tuberculosis.

Clinical Factors Affecting Peritoneal Membrane Function in Long-Term Continuous Ambulatory Peritoneal Dialysis Patients / 대한신장학회잡지

BACKGROUND: According to previous studies on peritoneal membrane function, solute transport significantly increased 3 years after the begining of peritoneal dialysis. However, there were only few reports regarding the change of peritoneal membrane function in long-term CAPD patients in Korea. METHODS: Clinical factors affecting peritoneal membrane function were analyzed, in patients who maintained CAPD more than 5 years. 124 patients performed peritoneal equilibration test(PET) 5 years after CAPD were included. Cross sectional study was performed to know the differences of clinical characteristics among 4 types of peritoneal membrane transport characteristics based on PET. Also, clinical factors affecting peritoneal memebrane function were analyzed in 31 patients who had undertaken PET initially and 5 years after the beginning of CAPD. RESULTS: D/P Cr was the highest(p<0.001) and ultrafiltration was the lowest(p=0.011) in high transport group. Also, the number of hypertonic glucose exchanges(more than 2.5%) per day was the highest (p=0.02), and serum albumin was the lowest(p<0.001) in this group. 17 patients were included in ultrafiltraion failure group. D/P Cr and the number of hypertonic glucose exchanges was significantly higher (p<0.001, p<0.001, respectively) and the duration of peritoneal dialysis was significantly longer(p=0.033) in ultrafiltration failure group compared with the others. D/P Cr of 124 patients was well correlated with the number of peritonitis(gamma=0.246, p=0.006), and the number of hypertonic glucose exchanges(gamma=0.33, p<0.001), but inversely correlated with serum albumin(gamma=-0.452, p<0.001) with the statistical significance. In 31 patients who undertook PET within 1 year after the begining of CAPD, although not significant, D/P Cr increased and ultrafiltration decreased after 5 years. A significant increase in D/P Cr(p=0.014) was seen in patients who experienced more than 2 episodes of peritonitis(n=14), compared with patients who experienced either peritonitis free or single episode of peritonitis(n=17). The linear regression analysis showed that the number of peritonitis and the number of hypertonic glucose exchanges per day were significantly correlated with the increased D/P Cr after 5 years(p=0.001, p=0.003, respectively). CONCLUSION: Clinical factors affecting peritoneal membrane function were the number of peritonitis, the use of hypertonic glucose exchanges and the duration of peritoneal dialysis. To preserve peritoneal membrane function, it is recommended to avoid hypertonic glucose exchanges and to reduce the number of peritonitis.