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Published on: January 30, 2011
Respiratory rates in pediatric emergency patients
E A Hooker1, D F Danzl, M Brueggmeyer
1Department of Emergency Medicine, University of Louisville School of Medicine, Kentucky 40292.
Insights
This study found that normal pediatric respiratory rates are higher than previously reported and decrease with age. The wide variation in normal rates complicates identifying abnormal breathing in children.
Area of Science:
- Pediatrics
- Emergency Medicine
- Physiology
Background:
- Establishing normal respiratory rates in pediatric emergency patients is crucial for accurate diagnosis.
- Current reported ranges for pediatric respiratory rates may not accurately reflect clinical practice.
Purpose of the Study:
- To establish a normal range for respiratory rates in pediatric emergency patients.
- To investigate the relationship between age and respiratory rate in children.
Main Methods:
- Prospective study of 434 pediatric patients in a suburban emergency department.
- Respiratory rates measured for one full minute.
- Exclusion of patients with cardiopulmonary complaints or elevated temperature.
Main Results:
- Respiratory rates ranged from 12 to 65 breaths/min across ages 2 weeks to 18 years.
- Respiratory rate showed an inverse relationship with age.
- A broad range of respiratory rates was observed within each age group.
Conclusions:
- Normal pediatric respiratory rates are higher than previously published and inversely related to age.
- The wide variability in normal pediatric respiratory rates presents challenges in identifying abnormal breathing patterns.
Abstract:
Respiratory rates are routinely measured in pediatric emergency patients. The normal range has not been established, and commonly reported ranges seem lower than those encountered in clinical practice. This prospective study selected subjects from pediatric patients presenting for care to a suburban emergency department. All respiratory rates were measured for one full minute. Patients with complaints related to the cardiopulmonary system or with an elevated temperature were excluded. A total of 434 patients were entered into the study over a 3-month period of time. Ages ranged from 2 weeks to 18 years. Respiratory rates ranged from a high of 65 breaths/min in a 4-month-old to a low of 12 breaths/min in a 14-year-old. Respiratory rate was inversely related to age, and there was a broad range in every age group. Our study shows that a normal respiratory rate is inversely related to age and is higher than noted in previously published studies. The wide range of "normal" pediatric respiratory rates makes identification of "abnormal" more difficult.
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