Published in:
01-06-2008 | Brief Report
Comparative evaluation of different helmets on patient–ventilator interaction during noninvasive ventilation
Authors:
R. Costa, P. Navalesi, G. Spinazzola, M. Rossi, F. Cavaliere, M. Antonelli, R. Proietti, G. Conti
Published in:
Intensive Care Medicine
|
Issue 6/2008
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Excerpt
The helmet has been shown to be effective for the delivery of noninvasive ventilation (NIV) to patients with acute respiratory failure (ARF) [
1‐
5]. Some studies found worse patient–ventilator synchrony [
6,
7] and inspiratory effort reduction [
6‐
9] with the helmet than with the oro-nasal mask. The physical characteristics of the helmet, large inner volume and a high compliance, determine an initial pressure dissipation that prolongs the time needed to reach the preset pressure support (PS) level; as a consequence, the overall amount of inspiratory pressure applied to the patient is decreased [
6,
8,
10]. The decay of inspiratory flow to the cycling-off threshold is also affected by the mechanical characteristics of this device [
6]. …