OUTpatient Intravenous LASix Trial in Reducing Hospitalization for Acute Decompensated Heart Failure (OUTLAST)

New York Presbyterian Brooklyn Methodist Hospital

Status and phase: Completed; Phase 4

Conditions: Heart Failure

Treatments: Drug: Furosemide; Drug: IV Solution

Study type: Interventional

Funder types: Other

Identifiers

NCT04691687

307139 (Other Identifier)

Details and patient eligibility

About

Single-center, prospective double-blinded randomized control trial to evaluate the the feasibility, efficacy and safety of outpatient IV diuretic therapy in treatment of heart failure.

Full description

Patients were randomized by a clinical pharmacist with the ratio of 1:1:1 into 3 groups: standard of care control arm (Group 1), IV placebo infusion (Group 2), and IV furosemide infusion (Group 3).Patients in Group 2 and 3 received a comprehensive Heart Failure (HF)-care protocol that included bi-weekly clinic visits for dose-adjusted IV-diuretics, medication adjustment and education. Patients, nurses and treating physicians were blinded to the randomization. Patients in Group 1 received standard of care treatment per heart failure guidelines at the discretion of the primary cardiologist involved in the patient's care.8 Patients in Group 2 received IV saline infusion (20-40 ml) concentrated by the pharmacist to minimize fluid intake. Patients in Group 3 received IV furosemide calculated by the pharmacist to be equivalent or higher in dose compared to the patient's home oral dose. The dose assignments were categorized into low dose (20 mg bolus with 20 mg/hour infusion sessions and 2 ml saline), intermediate dose (40 mg bolus with 40 mg/hour infusion sessions and 4 ml saline) and high dose (80 mg bolus with 80 mg/hour infusion sessions). The infusions were continuous over 3 hours, biweekly over a one-month period. Infusions were held at the discretion of the physician utilizing a written protocol (creatinine 25% above baseline, Systolic Blood Pressure(SBP) <80 mmHg or symptoms of presyncope). Patients in both Groups 2 and 3 resumed all of their oral home medications for HF post infusion visits per standard of care.

Enrollment: 100 patients

Sex: All

Ages: 18+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• Patients being admitted with ADHF over 18 years old
• Known history of systolic or diastolic dysfunction of greater than 6 weeks
• NYHA Class II-IV
• Heart failure as defined in [Table 1]. One symptom must be present at time of screening and one sign must be present in the last 12 months
• Elevated pro-BNP >/= 360 pg/ml and not explained by any other etiology
• Willing to consent and comply with scheduled visits and phone calls

Table 1. Criteria for Diagnosing Heart Failure

SYMPTOMS (at least 1 must be present at time of screening):

• Paroxysmal nocturnal dyspnea
• Orthopnea
• Dyspnea on mild or moderate exertion

SIGNS (at least 1 must be present in the last 12 months)

• Any rales post cough
• Jugular venous pressure >/= 10 cm H20
• Lower extremity edema
• Chest X-Ray (CXR) demonstrating pleural effusion, pulmonary congestion, or cardiomegaly

Exclusion criteria

• Systolic blood pressure <85 mmHg
• Signs of significant respiratory distress, according to the discretion of the investigator.
• Biventricular Implantable Cardioverter-Defibrillator(ICD) placement within 15 days, cardiogenic shock or volume depletion
• Chronic dialysis
• Acute renal failure defined as creatinine > 2 x baseline
• Severe systemic illness with life expectancy judged less than three years
• Chronic pulmonary disease requiring home O2, oral steroid therapy or hospitalization for exacerbation within 12 months, or significant chronic pulmonary disease in the opinion of the investigator
• Primary hemodynamically significant uncorrected valvular heart disease, obstructive, or regurgitant, or any valvular disease expected to lead to surgery during the trial.
• Atrial fibrillation with resting heart rate >90 bpm
• Myocardial infarction in past 90 days
• Percutaneous coronary intervention in past 30 days
• Heart transplant recipient or currently implanted left ventricular assist device
• Stroke in past 90 days
• No acute infection especially requiring IV antibiotics
• Allergy to Lasix
• Known chronic hepatic disease, defined as aspartate aminotransferase (AST) and alanine aminotransferase (ALT) levels > 3.0 times the upper limit of normal
• Non-verbal patients, patients who cannot speak or understand English, patients with dementia and psychiatric illness, patients who are blind or deaf and patients who are transferred to different hospital will be excluded.

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Quadruple Blind

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100 participants in 3 patient groups, including a placebo group

Standard of Care (Group 1)

No Intervention group

Description:

Patients in Group 1 received standard of care treatment per heart failure guidelines at the discretion of the primary cardiologist involved in the patient's care.

IV Placebo Infusion

Placebo Comparator group

Description:

Patients in Group 2 received IV saline infusion (20-40 ml) concentrated by the pharmacist to minimize fluid intake.The infusions were continuous over 3 hours, biweekly over a one-month period.

Treatment:

Drug: IV Solution

IV Furosemide Infusion

Experimental group

Description:

The dose assignments were categorized into low dose (20 mg bolus with 20 mg/hour infusion sessions and 2 ml saline), intermediate dose (40 mg bolus with 40 mg/hour infusion sessions and 4 ml saline) and high dose (80 mg bolus with 80 mg/hour infusion sessions). The infusions were continuous over 3 hours, biweekly over a one-month period.Infusions were held at the discretion of the physician utilizing a written protocol (creatinine 25% above baseline, SBP \<80 mmHg or symptoms of presyncope).

Treatment:

Drug: Furosemide