Document Detail

P 0.1/PIMax: an index for assessing respiratory capacity in acute respiratory failure.
MedLine Citation:
PMID:  2191019     Owner:  NLM     Status:  MEDLINE    
We studied airway occlusion pressure (P 0.1) and maximal inspiratory pressure (PIMax) in 10 healthy volunteers (Group A), 10 early postsurgical cardiac patients on spontaneous breathing (Group B), 10 patients mechanically ventilated for ARF (Group C), 10 patients weaning from mechanical ventilation after ARF (Group D) and 10 patients extubated after post-ARF (Group E). We calculated the index P 0.1/PIMax in an attempt to link the ventilatory demands and muscle ventilatory reserve. We found that the sensitivity and specificity in diagnosing the need for either full (C), partial (D) or no ventilatory support (A, B, E) by means of the P 0.1 were C = (50%, 95%), D = (70%, 72%) and A + B + E = (83%, 90%) respectively. When the index P 0.1/PIMax was used they were C = (90%, 100%), D = (80%, 87%) and A + B + E = (86%, 90%). We conclude that the index P 0.1/PIMax increases the reliability of P 0.1 alone to correctly classify the patients that will need either full, partial or no ventilatory support in ARF.
R Fernández; J Cabrera; N Calaf; S Benito
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Intensive care medicine     Volume:  16     ISSN:  0342-4642     ISO Abbreviation:  Intensive Care Med     Publication Date:  1990  
Date Detail:
Created Date:  1990-07-13     Completed Date:  1990-07-13     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7704851     Medline TA:  Intensive Care Med     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  175-9     Citation Subset:  IM    
Critical Care Service, Hospital de la Santa Creu i Sant Pau, Barcelona, Spain.
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MeSH Terms
Airway Resistance*
Inspiratory Capacity*
Lung Volume Measurements*
Middle Aged
Predictive Value of Tests
Respiration, Artificial*
Respiratory Insufficiency / diagnosis*,  epidemiology,  therapy
Sensitivity and Specificity

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