Abstract
We assessed the effect of pressure support ventilation (PSV) on breathing patterns and the work of breathing in 10 postoperative patients. Minute ventilation ( {Mathematical expression}E) increased by 8% with 5 cm H2O PSV and 10% with 10 cm H2O PSV compared to 0 cm H2O PSV. The increase in {Mathematical expression}E was achieved by increased mean inspiratory flow (24% with 5 cm H2O PSV and 67% with 10 cm H2O PSV) and a decrease in duty cycle (13% with 5 cm H2O PSV and 39% with 10 cm H2O PSV). The decrease in duty cycle along with a decrease in respiratory frequency allowed a greater expiratory time including a rest period for the respiratory muscles, which might minimize the risk of muscle fatigue. Furthermore, the inspiratory work added by the ventilator was near zero with 5 cm H2O PSV and 10 cm H2O PSV. Oxygen consumption also decreased significantly with 5 cm H2O PSV. We conclude that PSV improves the breathing patterns and minimizes the work of breathing spontaneously via a ventilator.
| Original language | English |
|---|---|
| Pages (from-to) | 491-494 |
| Number of pages | 4 |
| Journal | Intensive Care Medicine |
| Volume | 15 |
| Issue number | 8 |
| DOIs | |
| Publication status | Published - Dec 1989 |
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Keywords
- Breathing pattern
- Pressure support ventilation
- Work of breathing
ASJC Scopus subject areas
- Critical Care and Intensive Care Medicine
Cite this
Effect of pressure support ventilation on breathing patterns and respiratory work. / Tokioka, H.; Saito, Shinya; Kosaka, F.
In: Intensive Care Medicine, Vol. 15, No. 8, 12.1989, p. 491-494.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of pressure support ventilation on breathing patterns and respiratory work
AU - Tokioka, H.
AU - Saito, Shinya
AU - Kosaka, F.
PY - 1989/12
Y1 - 1989/12
N2 - We assessed the effect of pressure support ventilation (PSV) on breathing patterns and the work of breathing in 10 postoperative patients. Minute ventilation ( {Mathematical expression}E) increased by 8% with 5 cm H2O PSV and 10% with 10 cm H2O PSV compared to 0 cm H2O PSV. The increase in {Mathematical expression}E was achieved by increased mean inspiratory flow (24% with 5 cm H2O PSV and 67% with 10 cm H2O PSV) and a decrease in duty cycle (13% with 5 cm H2O PSV and 39% with 10 cm H2O PSV). The decrease in duty cycle along with a decrease in respiratory frequency allowed a greater expiratory time including a rest period for the respiratory muscles, which might minimize the risk of muscle fatigue. Furthermore, the inspiratory work added by the ventilator was near zero with 5 cm H2O PSV and 10 cm H2O PSV. Oxygen consumption also decreased significantly with 5 cm H2O PSV. We conclude that PSV improves the breathing patterns and minimizes the work of breathing spontaneously via a ventilator.
AB - We assessed the effect of pressure support ventilation (PSV) on breathing patterns and the work of breathing in 10 postoperative patients. Minute ventilation ( {Mathematical expression}E) increased by 8% with 5 cm H2O PSV and 10% with 10 cm H2O PSV compared to 0 cm H2O PSV. The increase in {Mathematical expression}E was achieved by increased mean inspiratory flow (24% with 5 cm H2O PSV and 67% with 10 cm H2O PSV) and a decrease in duty cycle (13% with 5 cm H2O PSV and 39% with 10 cm H2O PSV). The decrease in duty cycle along with a decrease in respiratory frequency allowed a greater expiratory time including a rest period for the respiratory muscles, which might minimize the risk of muscle fatigue. Furthermore, the inspiratory work added by the ventilator was near zero with 5 cm H2O PSV and 10 cm H2O PSV. Oxygen consumption also decreased significantly with 5 cm H2O PSV. We conclude that PSV improves the breathing patterns and minimizes the work of breathing spontaneously via a ventilator.
KW - Breathing pattern
KW - Pressure support ventilation
KW - Work of breathing
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UR - http://www.scopus.com/inward/citedby.url?scp=0024790361&partnerID=8YFLogxK
U2 - 10.1007/BF00273558
DO - 10.1007/BF00273558
M3 - Article
VL - 15
SP - 491
EP - 494
JO - Intensive Care Medicine
JF - Intensive Care Medicine
SN - 0342-4642
IS - 8
ER -