This clinical trial is focused on studying the effects of a new treatment called AZD3427 on patients with two specific health conditions: Heart Failure with Reduced Ejection Fraction (HFrEF) and Renal Impairment. Heart failure with reduced ejection fraction is a condition where the heart muscle does not pump blood as well as it should, and renal impairment refers to reduced kidney function. The purpose of the study is to evaluate how AZD3427 affects blood flow in the kidneys of these patients.
Participants in the study will receive either the treatment AZD3427 or a placebo, which is a substance with no active medication. The study will also use a special imaging technique called Positron Emission Tomography (PET) to observe changes in kidney blood flow. In addition to AZD3427, other substances used in the study include Dopamine Hydrochloride, 15O-WATER, and Sodium Chloride, which are used to help with the imaging process or as part of the treatment protocol.
The study will be conducted over a period of time, during which participants will undergo various assessments to monitor their health and the effects of the treatment. These assessments will include checking vital signs, laboratory tests, and heart monitoring through an ECG (electrocardiogram). The study aims to provide valuable information on the safety and effectiveness of AZD3427 in improving kidney function in patients with heart failure and kidney impairment.



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