Renaud Fay, João Pedro Ferreira, Mandeep R. Mehra, Patrick Rossignol, Faiez Zannad, Akshay S. Desai, Leo F. Buckley, Aws Almufleh, Brigham & Women’s Hospital [Boston] (BWH), Harvard Medical School [Boston] (HMS), Centre d'investigation clinique plurithématique Pierre Drouin [Nancy] (CIC-P), Centre d'investigation clinique [Nancy] (CIC), Université de Lorraine (UL)-Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL)-Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy)-Institut National de la Santé et de la Recherche Médicale (INSERM), Défaillance Cardiovasculaire Aiguë et Chronique (DCAC), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Cardiovascular and Renal Clinical Trialists [Vandoeuvre-les-Nancy] (INI-CRCT), Institut Lorrain du Coeur et des Vaisseaux Louis Mathieu [Nancy], French-Clinical Research Infrastructure Network - F-CRIN [Paris] (Cardiovascular & Renal Clinical Trialists - CRCT ), The Nancy team members are supported by the RHU Fight-HF, a public grant overseen by the French National Research Agency(ANR) as part of the second ‘Investissements d’Avenir’ programme (reference: ANR-15-RHUS-0004), and by the French PIA project ‘Lorraine Université d’Excellence’ (reference: ANR-15-IDEX-04-LUE)., IMPACT GEENAGE, ANR-15-RHUS-0004,FIGHT-HF,Combattre l'insuffisance cardiaque(2015), and ANR-15-IDEX-0004,LUE (ISITE),Lorraine Université d'Excellence(2016)
International audience; AimsLaboratory measures of haemoconcentration correlate with invasive haemodynamics and clinical outcomes in hospitalized heart failure (HF) patients. We aimed to determine the association between haemoconcentration and haemodynamic measures in ambulatory HF patients with implantable pulmonary arterial pressure (PAP) sensors.Methods and resultsWe reviewed ambulatory HF patients (n = 23) managed at the Brigham and Women's Hospital with implantable PAP sensors (CardioMEMS™, Abbott, Atlanta, GA, USA) who had sufficient data for serial haemodynamic–haemoconcentration correlation. The primary measures of interest were the absolute changes in haemoglobin and diastolic PAP at follow‐up compared to baseline values (obtained at implantation). In 23 patients (median age 64 years, 57% with HF with preserved ejection fraction), 518 paired laboratory–haemodynamic measurements were evaluated. At a median follow‐up of 27 (interquartile range 13–42) months, 17 (74%) patients had at least one hospitalization (59 total hospitalizations including 30 HF hospitalizations). For the population as a whole, diastolic PAP was negatively correlated with haemoglobin level (r = −0.09, P = 0.053). This negative correlation was more apparent when changes in haemoglobin and diastolic PAP were evaluated at the time of HF hospitalization compared to baseline values (r = −0.40, P = 0.029). The mean rise in diastolic PAP of 3.6 mmHg at HF hospitalization corresponded to a numerical decline of 0.6 g/dL in haemoglobin (P = 0.20).ConclusionChange in haemoglobin was correlated with change in diastolic PAP in ambulatory HF patients, especially at the time of HF hospitalization. These findings support the potential for investigation into the role of ambulatory monitoring of haemoglobin as an inexpensive, non‐invasive tool to guide de‐congestion strategies and potentially prevent HF hospitalizations.