Validity of Hemodynamic Monitoring Using Inert Gas Rebreathing Method in Patients With Chronic Heart Failure and Those Implanted With a Left Ventricular Assist Device.
J Card Fail
; 27(4): 414-418, 2021 04.
Article
em En
| MEDLINE
| ID: mdl-33035686
ABSTRACT
OBJECTIVE:
The present study assessed agreement between resting cardiac output estimated by inert gas rebreathing (IGR) and thermodilution methods in patients with heart failure and those implanted with a left ventricular assist device (LVAD). METHODS ANDRESULTS:
Hemodynamic measurements were obtained in 42 patients, 22 with chronic heart failure and 20 with implanted continuous flow LVAD (34 males, aged 50 ± 11 years). Measurements were performed at rest using thermodilution and IGR methods. Cardiac output derived by thermodilution and IGR were not significantly different in LVAD (4.4 ± 0.9 L/min vs 4.7 ± 0.8 L/min, Pâ¯=â¯.27) or patients with heart failure (4.4 ± 1.4 L/min vs 4.5 ± 1.3 L/min, Pâ¯=â¯.75). There was a strong relationship between thermodilution and IGR cardiac index (râ¯=â¯0.81, Pâ¯=â¯.001) and stroke volume index (râ¯=â¯0.75, Pâ¯=â¯.001). Bland-Altman analysis showed acceptable limits of agreement for cardiac index derived by thermodilution and IGR, namely, the mean difference (lower and upper limits of agreement) for patients with heart failure -0.002 L/min/m2 (-0.65 to 0.66 L/min/m2), and -0.14 L/min/m2 (-0.78 to 0.49 L/min/m2) for patients with LVAD.CONCLUSIONS:
IGR is a valid method for estimating cardiac output and should be used in clinical practice to complement the evaluation and management of chronic heart failure and patients with an LVAD.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Coração Auxiliar
/
Monitorização Hemodinâmica
/
Insuficiência Cardíaca
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
/
Male
Idioma:
En
Revista:
J Card Fail
Assunto da revista:
CARDIOLOGIA
Ano de publicação:
2021
Tipo de documento:
Article
País de afiliação:
Reino Unido