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Clinical Trial Summary

The primary objective of this multicentric observational retrospective study is to assess the efficacy and safety of SNP as part of the treatment regimen of AHF patients and to identify predictors of efficacy. The primary efficacy endpoint is brain natriuretic peptide (BNP) or N-terminal pro b-type natriuretic peptide (NT-proBNP) reduction (at least 25% from baseline levels) 48 hours after initiation of SNP infusion. AHF presentation (de novo or ADHF), systolic blood pression at presentation, left ventricle ejection fraction and dimension, entity of mitral regurgitation and central venous pressure will be evaluated in order to identify predictors of efficacy of SNP (in terms of primary endpoint).


Clinical Trial Description

The present is a multicenter, observational, retrospective study. All consecutive patients admitted with a diagnosis of AHF to the Cardiothoracovascular Departments of the ASST Grande Ospedale Metropolitano Niguarda (Milan), ASST Ospedale Papa Giovanni XXIII (Bergamo) and Ospedale Le Molinette (Torino), and treated with intravenous SNP between January 2016 and January 2020 will be included, and medical records screened. Through the collaboration of the two joining institution, the investigator plan to include approximately 300 patients. Inclusion criteria are: age 18 years or older; AHF diagnosis, defined as rapid onset or worsening of symptoms and/or signs of HF; Intravenous SNP treatment. Exclusion criteria are: Age <18 years old; AHF after cardiac surgery; AHF complicated by cardiogenic shock requiring high dosage (defined as inotropic score >10) vasoactive agents and/or short-term extracorporeal life support (i.e. VA-ECMO, Impella). Inotropic score (IS) calculated as: dopamine dose (μg/kg/min) + dobutamine dose (μg/kg/min) + 100 × epinephrine dose (μg/kg/min) + 100 × norepinephrine dose (μg/kg/min) + 10 × phosphodiesterase 3 inhibitor dose (μg/kg/min). Invasive monitoring of central venous pressure (CVP) and arterial pressure may be present. The Swan Ganz pulmonary artery catheter for continuous haemodynamic monitoring will be rarely used. Simultaneous intravenous diuretics and concomitant inotropic agents with a maximun IS<20 administration will be tolerated. SNP will be administered intravenously by a continuous infusion at a dose of 0.2 up to 2 mcg/kg/min. Titration of SNP up to the maximum tolerated dose will be based on achieving decongestion, defined as decrease in CVP and reduction of pulmonary congestion, with a target mean arterial pressure of 65 to 70 mmHg. Headache or severe hypotension, as well as documented thiocyanate toxicity, will warrant discontinuation of SNP therapy. The primary objective of our study is to assess the efficacy and safety of SNP as part of the treatment regimen of AHF patients and to identify predictors of efficacy. The primary efficacy endpoint is brain natriuretic peptide (BNP) or N-terminal pro b-type natriuretic peptide (NT-proBNP) reduction (at least 25% from baseline levels) 48 hours after initiation of SNP infusion. Secondary endpoints include: Survival free from rehospitalization for HF at 6 months; 30-day and 6-month mortality; Composite of long-term LVAD implantation or HTx at 30 days and 6 months; Length of intensive care unit and total hospital stay. Safety endpoints are: thiocyanate toxicity, headache, severe hypotension requiring discontinuation of therapy, ventricular arrhythmias The investigators will evaluate the following baseline patients' characteristics in order to identify predictors of efficacy of SNP (in terms of primary endpoint): AHF presentation (de novo or ADHF); SBP at presentation (preserved, i.e. 90-140 mmHg; elevated, i.e. >140 mmHg; low, <90 mmHg); left ventricle ejection fraction (LVEF), graded as reduced (<40%), mid-range (40-49%) or preserved (≥50%); end-diastolic diameter (EDD); entity of mitral regurgitation (none/mild or moderate/severe mitral regurgitation); CVP (< 8 mmHg or ≥8 mmHg) Patient demographics, haemodynamics, laboratory values, echocardiographic parameters, adverse events and clinical outcomes will be obtained by complete chart review. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT05027360
Study type Observational
Source Niguarda Hospital
Contact Nuccia Morici, MD
Phone +39026444
Email [email protected]
Status Recruiting
Phase
Start date June 1, 2021
Completion date December 31, 2021

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