Sequential Combination Diuretic-Therapy for Massive Fluid Overload in Furosemide-Refractory Patients with Diabetic Kidney Disease

Abstract

Patients with renal disease are at risk of fluid overload which escalates as the disease progresses. In the present study, we evaluated the efficacy of sequential combination diuretic-therapy (SCDT) in management of massive fluid overload in Furosemide-refractory renal patients. The added diuretics were Spironolactone 25 mg daily for 3 days, to those without risk of hyperkalemia, followed by Hydrochlorothiazide 25 mg/Metolazone 5 mg daily for 3 more days. Excluded patients were those with 1) acute renal disease, 2) echocardiographic evidence of: a) left ventricular ejection fraction < 40%, b) significant stenotic or incompetent valvular disease, c) ASD or VSD, d) significant pericardial disease, and 3) significant limb venous disease or on drugs likely to cause limb-oedema. To assess the extent of fluid overload; clinical examination was complemented with radiological imaging as well as echocardiographic measurement of systolic pulmonary arterial pressure (sPAP). SCDT led to significant symptomatic, clinical, and radiological improvement of fluid overload without significant side effects. The latter were limited to hyperkalemia and hyponatremia which improved with dietary compliance. Moreover, hyperkalemia improved after subsequent addition of Thiazide/Metolazone. SCDT led to significant (p < 0.001) increase in fractional excretion of sodium and decrease in body weight and sPAP. In conclusion; SCDT is a safe and efficacious measure to control fluid overload in patients with renal diseases.