NCT05802849CompletedPhase 4
Acetazolamide Per os for Decompensation of Heart Failure
Source: ClinicalTrials.gov · Last updated 16 Oct 2026
Brief summary (registry, in English)
The main causes of chronic heart failure (CHF) are arterial hypertension and coronary artery disease, less often cardiomyopathy, pericarditis, metastatic myocardial lesions. It should be noted that up to 50% of patients have a preserved left ventricular ejection fraction (LVEF), while its prevalence is progressively increasing annually. Acute decompensation of CHF is understood as a rapid increase in the severity of clinical manifestations (shortness of breath, severe arterial hypoxemia, the occurrence of arterial hypotension), which caused urgent medical treatment and emergency hospitalization in a patient already suffering from CHF. Decompensation of CHF requires intensification of treatment in order to stabilize the patient's condition. Strengthening diuretic therapy in addition to standard therapy helps to reduce edematous syndrome.
- Status (registry)
- Completed
- Phase (registry)
- Phase 4
- Study type
- Interventional
- Enrollment
- 400 (actual)
- First submitted
- 22 Mar 2023
- Start date
- 1 May 2023
- Primary completion date
- 28 Aug 2025
- Lead sponsor
- Samara State Medical University
- Diseases
- Heart failure
- NCT number
- NCT05802849
What you commit to
- Study type: Interventional · Phase 4
- Participants enrolled: 400
- From 1 May 2023 to the primary completion date, 28 Aug 2025
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Acetazolamide therapy for a month before hospitalization.
Other illness
- Hypersensitivity to acetazolamide, other sulfonamides and / or components of the drug.
- Acute renal failure.
- Addison's disease.
- Decompensated diabetes mellitus.
- Emergency conditions (myocardial infarction, pulmonary embolism, acute myocarditis, pericarditis, aortic aneurysm).
- Cirrhosis of the liver with encephalopathy and liver failure.
- Congenital heart defects.
- Malignant neoplasm in the phase of active treatment or terminal form of cancer.
Lab values
- The expected intravenous use of inotropes, vasopressors or sodium nitroprusside at any time of the study.
- Hypokalemia (potassium \< 3.5 mmol/l).
- Hyponatremia (sodium \<135 mmol/l).
- Severe chronic renal insufficiency (creatinine clearance less than 10 ml/min) or the use of renal replacement therapy or ultrafiltration at any time prior to inclusion in the study.
- Metabolic acidosis (bicarbonate less than 12 mmol/L).
- Severe anemia (Hb \<70 g/L).
Other
- Exposure to nephrotoxic agents (e.g. contrast dye) is expected within the next 3 days.
- Systolic blood pressure \<90 mmHg.
- Pregnancy and lactation.
- Hypocorticism.
Who the study is looking for
- Men or women aged 18 years and older
- Decompensated CHF NYHA II-IV, which required intravenous administration of diuretics
- Any injection fraction of left ventricle\*
- Signed informed consent to participate in the study.
- in patients with LV LV ≥ 50%: the presence of structural changes of the heart# (left ventricular myocardial hypertrophy, enlargement of the left atrium) and/or diastolic dysfunction# and/or increased levels of BNP or NT-proBNP (BNP \> 400 pg/ml or NT-proBNP \> 450 pg/ml in persons younger 50 years old; \> 900 pg/l in persons 51-75 years old; \> 1800 pg/ml older than 75 years) #.
- criteria according to clinical guidelines 2020 Clinical practice guidelines for Chronic heart failure. Russian Journal of Cardiology. 2020;25(11):4083. (In Russ.) doi:10.15829/1560-4071-2020-4083
Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| Samara State Medical University Coordinator of this site? Confirm its status | Samara | Russia | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.