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[Arterial oxygen saturation versus peak expiratory flow as predictive values in the course of asthmatic crises in
I Ortiz Aldana1, L Arreguín Osuna, R García Caballero
1Servicio de Alergia, Instituto Nacional de Pediatría, México, DF.
Insights
Arterial oxygen saturation is a better predictor than peak expiratory flow rate for children experiencing asthmatic crises. This finding aids in determining appropriate treatment, whether ambulatory or hospital-based.
Area of Science:
- Pediatrics
- Respiratory Medicine
- Emergency Medicine
Background:
- Asthmatic crisis is a common pediatric emergency.
- Differentiating between patients needing ambulatory versus hospital treatment is challenging.
- Existing predictive scores for asthmatic crisis outcomes are inconclusive.
Purpose of the Study:
- To compare arterial oxygen saturation and peak expiratory flow rate as predictors of asthmatic crisis outcomes in children.
- To evaluate the efficacy of these measurements in guiding treatment decisions.
Main Methods:
- Prospective, longitudinal, observational, comparative study.
- Involved 50 children (ages 6-18) with moderate asthmatic crisis.
- Measured arterial oxygen saturation and peak expiratory flow rate at baseline and post-albuterol treatment (30 min, 2, 4, 24 hrs).
Main Results:
- Significant differences observed in arterial oxygen saturation from baseline to 2, 4, and 24 hours post-treatment (p=0.01).
- Significant differences in peak expiratory flow rate were only found between baseline and 24 hours post-treatment.
- Arterial oxygen saturation demonstrated more consistent and significant changes over time.
Conclusions:
- Arterial oxygen saturation is a more effective predictor of asthmatic crisis evolution in children compared to peak expiratory flow rate.
- This finding can assist clinicians in making timely and appropriate treatment decisions for pediatric asthma emergencies.
Abstract:
Asthmatic crisis is one of the most frequent urgencies in children. One of the most difficult decision for a physician is to determine what patient requires only ambulatory treatment and what patient needs hospital treatment. Many investigators have developed predictive scores, but to date conclusions are confusing. The purpose of the present study was to compare the value of arterial oxygen saturation versus peak expiratory flow rate measurements as predictors of the outcome of the asthmatic crisis in children. We performed a prospective, longitudinal, observational, comparative study in 50 children (30 males, 20 female), with ages between 6 and 18 years old, with the presence of a moderate asthmatic crisis. We measured arterial oxygen saturation and peak expiratory flow rate at the moment of their arrival to urgencies and at 30 minutes, 2, 4 and 24 hours after the administration of nebulized albuterol (100 mcg/k/dose). We found significant differences on baseline arterial oxygen saturation and the registrations taken at 2, 4, and 24 hours posttreatment (0.01), and we could only find significant differences between baseline peak expiratory flow rate and the registrations taken at 24 hours pretreatment. In conclusion arterial oxygen saturation is a better predictor than peak expiratory flow rate in the evolution of the asthmatic crisis in children.