Objective To compare the occurrence of hypoglycemia during hemodialysis in chronic kidney disease diabetic patients who present different levels of pre-dialysis glycemia both when using dialysis solutions with and without glucose. Subjects and methods Twenty type 2 diabetic patients in maintenance hemodialysis were submitted to three dialysis sessions (at a 7-day interval each) with dialysis solutions without glucose, with glucose at 55 mg/dL, and at 90 mg/dL subsequently. Blood glucose levels were measured immediately pre-dialysis and at 4 moments during the session, and values under 70 mg/dL were considered as hypoglycemia. Results Average pre-dialysis glycemia was lower in those who presented intra-dialytic hypoglycemia than in those who did not, both in glucose-free (140.4 ± 50.7 vs. 277.7 ± 91.0 mg/dL; p = 0.005; 95%CI: 46.4 to 228.1) and in glucose 55 mg/dL (89.5 ± 10.6 vs. 229.7 ± 105.0 mg/dL; p < 0.05; 95%CI: 9.8 to 270.5). In patients with pre-dialysis glycemia under 140 mg/dL, average intradialytic glycemia was significantly lower than pre-dialysis glycemia only when using glucose-free dialysate (p < 0.0001; 95%CI: 29.9 to 56.0 - t-test). Hypoglycemia during dialysis was observed only when using glucose-free or glucose-poor dialysis solutions. Conclusions The use of glucose-free or glucose-poor dialysis solution presents a high risk of intradialytic hypoglycemia in diabetic renal patients, especially in those with presumed better glycemic control.

INTRODUÇÃO: Hipoglicemia pode ocorrer durante hemodiálise em pacientes diabéticos renais crônicos quando se utiliza dialisato sem glicose. Com soluções de diálise contendo glicose a 90 mg/dL ou mais, isto pode ser prevenido, mas esses pacientes diabéticos podem apresentar glicemias intradialíticas muito elevadas. OBJETIVO: Nosso estudo testou um dialisato com taxas mais reduzidas de glicose tentando prevenir tanto hipo como hiperglicemia nesses pacientes. MÉTODOS: Vinte indivíduos diabéticos de nossa unidade de hemodiálise foram submetidos a três sessões com soluções de diálise com diferentes concentrações de glicose - 55 mg/dL (Fase 55) e 90 mg/dL (Fase 90) - e uma solução sem glicose (Fase ZERO). Glicemias foram medidas em cinco momentos durante cada sessão - antes e aos 30, 60, 150 e 240 min. Resultados inferiores a 70 mg/dL foram considerados como hipoglicemia. RESULTADOS: Três pacientes apresentaram seis episódios de hipoglicemia na Fase 55, mas nenhum paciente apresentou qualquer episódio na Fase 90. Na Fase ZERO, cinco pacientes apresentaram sete episódios. CONCLUSÃO: O dialisato com baixo teor de glicose (55 mg/dL) não preveniu episódios de hipoglicemia durante hemodiálise em pacientes diabéticos, um achado similar ao obtido quando se utilizou solução de diálise sem glicose. O uso de dialisato com glicose a 90 mg/dL não produziu glicemias intradialíticas mais elevadas do que as outras soluções de diálise.

INTRODUCTION: Hypoglycemia can occur during hemodialysis in diabetic chronic renal failure patients when using a dialysate without glucose. With dialysis solutions with glucose 90 mg/dL or more, this is preventable, but diabetic patients could present higher intradialytic glycemias. OBJECTIVE: We tested a dialytic fluid with a lower level of glucose trying to prevent both hypo and hyperglycemia in these patients. METHODS: Twenty diabetic individuals from our hemodialysis unit were submitted to 3 sessions with dialysis solutions with two different glucose concentrations - 55 mg/dL (Phase 55), and 90 mg/dL (Phase 90) - and a glucose-free one (Phase ZERO). Plasma glucose levels were measured at five moments during each session - before and at 30, 60, 90 and 240 min. Results under 70 mg/dL were considered as hypoglycemia. RESULTS: Three patients presented 6 episodes of hypoglycemia in Phase 55, but no patient presented any episode in Phase 90. In Phase ZERO, five patients presented 7 episodes. CONCLUSION: This dialysate with a low level of glucose (55 mg/dL) did not prevent hypoglycemia episodes during hemodialysis in diabetic patients, these occurrences being similar to that when using a dialysate without glucose. The use of a 90 mg/dL glucose dialysis solution did not induce higher intradialytic glycemia levels than the other dialysis solutions.

Dermatose perfurante adquirida é uma condição rara, em geral associada a algumas doenças sistêmicas, ocorrendo especialmente em pacientes diabéticos com insuficiência renal crônica submetidos a diálise. O sintoma principal é o prurido e a apresentação clínica característica é a presença de lesões papulares marrom-avermelhadas no tronco, cabeça e pescoço. Biópsia da lesão revela invaginação epidérmica com preenchimento por plug ceratótico. A etiologia é pouco compreendida e várias tentativas terapêuticas têm sido desapontadoras.

Acquired perforating dermatosis is a rare condition often associated with some systemic diseases, especially diabetic patients with chronic renal failure undergoing dialysis. The main symptom is pruritus and it is clinically characterized by the presence of redish-brown papular lesions in the trunk, head and neck. Biopsy of the lesion reveals epidermal invagination with keratotic plug. The etiology is poorly understood and several therapeutic measures have been disappointing.