3 research outputs found
Incremento da depuração renal em pacientes gravemente enfermos: Incidência, fatores associados e efeitos no tratamento com vancomicina
Get PDFObjective: An augmented renal clearance has been described in some groups of critically ill patients, and it might induce sub-optimal concentrations of drugs eliminated by glomerular filtration, mainly antibiotics. Studies on its occurrence and determinants are lacking. Our goals were to determine the incidence and associated factors of augmented renal clearance and the efects on vancomycin concentrations and dosing in a series of intensive care unit patients. Methods: We prospectively studied 363 patients admitted during 1 year to a clinical-surgical intensive care unit. Patients with serum creatinine >1.3mg/dL were excluded. Creatinine clearance was calculated from a 24-hour urine collection. Patients were grouped according to the presence of augmented renal clearance (creatinine clearance >120mL/min/1.73m2), and possible risk factors were analyzed with bivariate and logistic regression analysis. In patients treated with vancomycin, dosage and plasma concentrations were registered. Results: Augmented renal clearance was present in 103 patients (28%); they were younger (48±15 versus 65±17 years, p>0.0001), had more frequent obstetric (16 versus 7%, p=0.0006) and trauma admissions (10 versus 3%, p=0.016) and fewer comorbidities. The only independent determinants for the development of augmented renal clearance were age (OR 0.95; p<0.0001; 95%CI 0.93-0.96) and absence of diabetes (OR 0.34; p=0.03; 95%CI 0.12-0.92). Twelve of the 46 patients who received vancomycin had augmented renal clearance and despite higher doses, had lower concentrations. Conclusions: In this cohort of critically ill patients, augmented renal clearance was a common finding. Age and absence of diabetes were the only independent determinants. Therefore, younger and previously healthy patients might require larger vancomycin dosing.Facultad de Ciencias Médica
Incremento da depuração renal em pacientes gravemente enfermos: Incidência, fatores associados e efeitos no tratamento com vancomicina
Get PDFObjective: An augmented renal clearance has been described in some groups of critically ill patients, and it might induce sub-optimal concentrations of drugs eliminated by glomerular filtration, mainly antibiotics. Studies on its occurrence and determinants are lacking. Our goals were to determine the incidence and associated factors of augmented renal clearance and the efects on vancomycin concentrations and dosing in a series of intensive care unit patients. Methods: We prospectively studied 363 patients admitted during 1 year to a clinical-surgical intensive care unit. Patients with serum creatinine >1.3mg/dL were excluded. Creatinine clearance was calculated from a 24-hour urine collection. Patients were grouped according to the presence of augmented renal clearance (creatinine clearance >120mL/min/1.73m2), and possible risk factors were analyzed with bivariate and logistic regression analysis. In patients treated with vancomycin, dosage and plasma concentrations were registered. Results: Augmented renal clearance was present in 103 patients (28%); they were younger (48±15 versus 65±17 years, p>0.0001), had more frequent obstetric (16 versus 7%, p=0.0006) and trauma admissions (10 versus 3%, p=0.016) and fewer comorbidities. The only independent determinants for the development of augmented renal clearance were age (OR 0.95; p<0.0001; 95%CI 0.93-0.96) and absence of diabetes (OR 0.34; p=0.03; 95%CI 0.12-0.92). Twelve of the 46 patients who received vancomycin had augmented renal clearance and despite higher doses, had lower concentrations. Conclusions: In this cohort of critically ill patients, augmented renal clearance was a common finding. Age and absence of diabetes were the only independent determinants. Therefore, younger and previously healthy patients might require larger vancomycin dosing.Facultad de Ciencias Médica
Incremento da depuração renal em pacientes gravemente enfermos: incidência, fatores associados e efeitos no tratamento com vancomicina
Get PDFObjetivo: Foi descrito um incremento da depuração renal em alguns grupos de pacientes gravemente enfermos, o qual pode induzir à eliminação de concentrações de fármacos por filtração glomerular aquém do ideal, principalmente no caso de antibióticos. Sua ocorrência e os fatores determinantes têm sido pouco estudados. Nossos objetivos foram determinar a incidência e os fatores associados ao incremento da depuração renal, bem como seus efeitos nas concentrações e na posologia de vancomicina em uma série de pacientes em unidade de terapia intensiva. Métodos: Estudamos, de forma prospectiva, 363 pacientes admitidos durante 1 ano em uma unidade de terapia intensiva clínico-cirúrgica. Foram excluídos pacientes que tivessem nível de creatinina sérica >1,3mg/dL. A depuração de creatinina foi calculada a partir da coleta de urina de 24 horas. Os pacientes foram agrupados segundo a presença de incremento da depuração renal (depuração de creatinina >120mL/min/1,73m2), e os possíveis fatores de risco foram analisados por meio de análise bivariada e logística. Em pacientes tratados com vancomicina, foram registradas a posologia e as concentrações plasmáticas. Resultados: O incremento da depuração renal esteve presente em 103 pacientes (28%), os quais eram mais jovens (48±15 versus 65±17 anos; p<0,0001), tinham mais frequentemente admissões obstétricas (16 versus 7%; p=0,0006) e por trauma (10 versus 3%; p=0,016), e menos comorbidades. Os únicos determinantes independentes para o desenvolvimento de incremento da depuração renal foram idade (OR=0,95; IC95%=0,93-0,96; p<0,0001;) e ausência de diabetes (OR 0,34; IC95% 0,12-0,92; p=0,03). Doze dos 46 pacientes que receberam vancomicina tinham incremento da depuração renal e, apesar das doses elevadas, tinham concentrações plasmáticas de vancomicina mais baixas. Conclusões: Nessa coorte de pacientes gravemente enfermos, foi frequente o achado de incremento da depuração renal. Idade e ausência de diabetes foram os únicos determinantes independentes. Assim, pacientes jovens e previamente saudáveis podem necessitar de doses mais elevadas de vancomicina
