Conditions: Heart Failure Kidney Dysfunction
Keywords: heart failure heart failure with and without kidney dysfunction
Allocation: NA | Intervention model: SINGLE_GROUP
Enrollment: 41
Healthy volunteers: no

Brief summary:
The investigators' objective is to define the effects of decreasing the furosemide dose on heart, kidney and humoral function in people with compensated heart failure and kidney dysfunction and also in people with compensated heart failure without kidney dysfunction. Secondly, to define the humoral activation in both groups.

Detailed description:
The broad objective of this protocol is to advance our understanding of the pathophysiological mechanisms of human Cardiorenal Syndrome (CRS) with a specific emphasis upon the biological interaction between diuretic therapy, the renin-angiotensin-aldosterone-system (RAAS) and cyclic 3'-5'-guanosine monophosphate (cGMP) pathway.

Arms:
arm 1: Subjects received their clinically prescribed dose of furosemide for a 3 week stabilization period, then were assessed for cardiorenal and humoral function. Subjects then had a 50% reduction of the furosemide dose for a 3 week stabilization period, and were assessed for cardiorenal and humoral function again.

Interventions: intervention 1: Furosemide
Intervention descriptions: intervention 1: Subjects received their clinically prescribed dose of furosemide for a 3 week stabilization period, then were assessed for cardiorenal and humoral function. Subjects then had a 50% reduction of the furosemide dose for a 3 week stabilization period, and were assessed for cardiorenal and humoral function again.

Protocol document: