Related Experiment Video
Updated: Apr 29, 2026
Calculating Heart Rate Variability from ECG Data from Youth with Cerebral Palsy During Active Video Game Sessions
Published on: June 5, 2019
In COPD patients on prolonged mechanical ventilation heart rate variability during the T-piece trial is better after
Michele Vitacca1, Simonetta Scalvini2, Maurizio Volterrani3
1Respiratory Rehabilitation Division, Salvatore Maugeri Foundation IRCCS, Lumezzane, (BS), Italy.
Objectives:
To evaluate heart rate variability (HRV), hemodynamics, mechanics, dyspnea and blood gases following different mechanical ventilation (MV) settings.
Background:
No study has evaluated physiological changes during T-piece trials following different MV settings.
Methods:
In 8 COPD patients on prolonged MV we applied in random order two MV settings: i) pressure support (PS) 20 cm H2O + positive end-expiratory pressure (PEEP) 0 cm H2O (setting-1) and ii) PS 15 cm H2O + PEEP 5 cm H2O (setting-2), each followed by a 30 min T-piece trial.
Results:
Setting-1 induced greater minute ventilation, tidal volume/inspiratory time and lower pulmonary artery occlusion pressure; setting-2 reduced intrinsic PEEP. Mechanics and hemodynamics data did not differ, but all HRV time domain indices were reduced only after setting-1, suggesting a decreased parasympathetic and increased sympathetic cardiac modulation.
Conclusions:
The T-piece trial following setting-2 seems less stressful on neural control of HRV. Future studies on T-piece trials should consider the residual effect of the MV setting.
More Related Videos
Related Concept Videos
01:20Assessment of Ventilation I: Respiratory Rate
A Ventilation assessment is critical for monitoring a patient's health status. Respiration, one of the most accessible vital signs, provides insights into the function of numerous body systems and can indicate serious health issues, such as brainstem injuries from head trauma.
Critical Guidelines for Assessing Ventilation:
01:29Assessment of Ventilation II: Respiratory Depth and Rhythm
Respiratory depth measures the volume of air inhaled or exhaled during a breath. It can vary from shallow to deep and typically remains consistent when a person is at rest or asleep. Occasionally, individuals will automatically inhale deeply, known as sighing, which inflates the lungs with more air than normal breathing.
To assess respiratory depth, observe the degree of chest excursion or movement:
01:26Respiratory Volumes and Capacities I
01:23Mechanical Ventilation III: Noninvasive Ventilation
Noninvasive Positive-Pressure Ventilation...
01:19Special considerations while measuring oxygen saturation
Ensuring accuracy in vital sign recordings while prioritizing patient comfort and minimizing anxiety is...
01:23Mechanical Ventilation II: Invasive Ventilation
Negative-Pressure Ventilators
Negative-pressure ventilators create a vacuum around the chest or body to draw air into the lungs, simulating breathing. This method does not require an...