Pediatric anesthesia & critical care

Phenotypes based on respiratory drive and effort to identify the risk factors when P0.1 fails to estimate ∆PES in ventilated children

Crit CarePublished Secondary analysis of a randomised controlled trial

Authors' conclusion

In patients with PARDS, P0.1 commonly underestimated high respiratory effort particularly with high airway resistance, high tidal volume, and high doses of opioids.

Study context

Population
Ventilated children and young adults with pediatric ARDS (pediatric acute respiratory distress syndrome (PARDS)) in an RCT of lung and diaphragm protective ventilation953 patient days
Participants
222 children
Comparison
Mismatch phenotypes vs all other spontaneous breathing phenotypes
  • High underestimated effortn = 119
  • Overestimated effortn = 37
Primary endpoint
Factors associated with each mismatch phenotype between ∆PES-REAL and P0.1-predicted ∆PES (∆PES-PRED = 5.91*P0.1)
Methodological detailsphysiological data, logistic regression
  • Physiological data
  • Logistic regression

Primary result

As reported in the abstract

Risk factors for mismatch phenotypes
Each group vs other spontaneous breathing phenotypesAdjusted odds ratio (95% CI)P value
High underestimated efforthigher airway resistance, per log unit increase
5.62(2.58–12.26)
P < 0.001
High underestimated efforthigher tidal volume, per cubic unit increase
1.53(1.04–2.24)
P = 0.03
High underestimated efforthigher opioid use
2.4(1.12–5.13)
P = 0.024
High underestimated effortset ventilator rate
0.96(0.93–0.99)
P = 0.005
Overestimated effortalveolar dead space
1.05(1.01–1.09)
P = 0.007
Overestimated effortrespiratory resistance
0.32(0.13–0.81)
P = 0.017
∆PES-REAL and ∆PES-PRED aligned in active patient days
536 (77%)

Original publication

Phenotypes based on respiratory drive and effort to identify the risk factors when P0.1 fails to estimate ∆PES in ventilated children. Crit Care. Published 4 October 2024. doi:10.1186/s13054-024-05103-x

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