Heart Rate Variability During Weaning Mechanical Ventilation

Marcelle Guerra, Thabata Pidori Igreja, Tatiana Dias de Carvalho, Vitor Engracia Valenti, Luiz Carlos de Abreu, Talita Dias da Silva, David M. Garner, Rodrigo Daminello Raimundo


INTRODUCTION: Heart rate variability (HRV) is a noninvasive method that analyzes fluctuations of intervals between heartbeats and it is related to the influences of the autonomic nervous system during weaning. OBJECTIVE: To describe the behavior of cardiac autonomic modulation during the weaning process. METHOD: A search was conducted in PubMed. Initially 206 articles were found. After restriction search we identified 28 potentially eligible publications. RESULTS: Nine studies were included, among which eight were performed in adults and concluded that HRV during weaning becomes important because it can provide information on pathophysiological imbalances reflected in the success or failure of weaning. Only one article conducted the study in children and stated that the value of HRV as a predictor of extubation still requires further evaluation. CONCLUSION: Behavior of the cardiac autonomic modulation during the weaning process is characterized by reduced HRV and vagal withdrawal in patients with failure weaning needing to be reconnected to the mechanical ventilation support.


Autonomic nervous system; Cardiovascular physiology; Weaning ventilator

Full Text: PDF HTML


  • There are currently no refbacks.

Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.