Alteration of Lung Mechanics Depending on Expiratory Sensitivity (ESENS) during Pressure Support Ventilation / 대한구급학회지
The Korean Journal of Critical Care Medicine
;
: 8-16, 2006.
Article
in Korean
| WPRIM
| ID: wpr-649417
ABSTRACT
BACKGROUND:
To evaluate effects of 5 expiratory sensitivity (ESENS) levels (5%; 15%; 25%; 35%; 45%) on lung mechanics and the effects depending on the two P(0.1) levels ( or =3 cm H2O).METHODS:
Prospective, randomized, physiologic study for intubated adult patients during weaning from mechanical ventilation. Patients were randomly submitted to the 5 settings of ESENS in the Galileo ventilator (Galileo Gold, Hamilton Medical AG, Switzerland). Physiologic variables were continuously measured using a Bicore CP-100 pulmonary mechanics monitor (CP-100, Bicore, USA).RESULTS:
Thirteen patients, ten men and three women, with a mean age of 65.2+/-16.1 yr were studied. Tidal volume (V(T)) decreased significantly from ESENS 5% to 45%. With increasing levels of ESENS, respiratory rates (RR) steadily increased from ESENS 5% to 35% and 45%. Shallow breath index (F/V(T)) increased significantly from ESENS 5% to 45%. Inspiratory time (T(I)) decreased gradually significantly from ESENS 5% to 45%. RR and F/V(T) increased from ESENS 5% to 15% and 45% and V(T) decreased gradually in patients with P(0.1) or =3 cm H2O.CONCLUSIONS:
The proper adjustment of expiratory sensitivity (ESENS) levels improved patient-ventilator synchrony and decreased respiratory rates and shallow breath index, especially in P(0.1)<3 cm H2O during PSV in ventilator weaning patients. Lower ESENS level would be more appropriate in terms of lung mechanics in patients with less than 3 cm H2O of P(0.1).
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Respiration, Artificial
/
Ventilation
/
Weaning
/
Ventilator Weaning
/
Ventilators, Mechanical
/
Tidal Volume
/
Work of Breathing
/
Prospective Studies
/
Mechanics
/
Respiratory Rate
Type of study:
Controlled clinical trial
/
Diagnostic study
/
Observational study
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
Korean
Journal:
The Korean Journal of Critical Care Medicine
Year:
2006
Type:
Article
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