Related Experiment Video
Updated: Jun 12, 2026

Description of a Swine Infant Model of Volume-Controlled Hemorrhagic Shock
Published on: November 3, 2023
Pediatric vasoocclusive crisis and weather conditions
Alexander L Rogovik1, Jeeshan Persaud, Jeremy N Friedman
1Pediatric Research in Emergency Therapeutics (PRETx) Program, Division of Pediatric Emergency Medicine, BC Children's Hospital, Vancouver, British Columbia, Canada.
Insights
Cold temperatures and high winds correlate with increased vasoocclusive crises (VOC) in children. Awareness and preventive measures are crucial for at-risk pediatric patients experiencing VOC.
Area of Science:
- Pediatric Hematology
- Environmental Health
- Epidemiology
Background:
- Previous research suggests a link between weather and vasoocclusive crises (VOC) in adults, but findings are inconsistent.
- Understanding environmental triggers for VOC in children is crucial for effective management.
Purpose of the Study:
- To investigate the association between weather conditions and pediatric emergency department visits for VOC.
- To determine if weather impacts hospital admissions, pain severity, and frequency of VOC in children.
Main Methods:
- A retrospective observational study analyzed health records of pediatric VOC patients (<18 years) at a tertiary care center.
- Correlations were performed between daily, weekly, and monthly weather data and the frequency of painful crises.
Main Results:
- A total of 430 VOC emergency department visits were recorded between 2005-2006.
- Significant correlations were found between colder temperatures and wind speed and increased daily/weekly painful crises.
- Higher humidity correlated with increased average monthly pain scores.
Conclusions:
- Colder temperatures and higher wind speeds are significantly associated with a higher incidence of pediatric VOC.
- Healthcare providers and parents should be aware of these weather-related triggers for VOC in children.
- Implementing preventive measures for at-risk pediatric patients is recommended.
Background:
Previous studies have demonstrated associations of frequency of vasoocclusive crisis with weather conditions in adults, although relationships have been inconsistent.
Objectives:
Our objective was to determine if there is an association between weather conditions and pediatric emergency department (ED) visits, hospital admissions, and day and severity of pain precipitation for vasoocclusive crisis (VOC).
Methods:
A retrospective observational study was performed at a large tertiary care pediatric center. We reviewed health records of all VOC patients under the age of 18 years with a chief complaint of pain and performed correlations between daily and average weekly and monthly weather conditions and frequency of painful crises.
Results:
A total of 430 visits for VOC to the ED were documented from January 2005 to December 2006. Significant correlations were noted between the daily and weekly number of painful crises and colder temperatures (ρ=-0.11, p=0.004 for daily data and r=0.25, p=0.01 weekly) and wind speed (ρ=0.13, p<0.001 and r=0.25, p=0.01). The monthly number of painful crises was moderately correlated with temperatures (r=-0.42, p=0.04). The average monthly pain score was higher in more humid months (r=0.44, p=0.03).
Conclusion:
We found significant correlations of VOC with weather conditions where colder temperatures and higher wind speed were associated with a higher incidence of VOC in children. Health care providers as well as parents should be aware of these findings and ensure that preventive measures are instituted in patients at risk.
Related Concept Videos
Factors Affecting Body Temperature
Factors may include:
Methods of reducing fever
Pharmacological Methods of Reducing Fever:
Decreased Body Temperature
Blood Pressure Imbalances and Circulatory Shock
Blood Pressure: Hypertension and Hypotension
Normal blood pressure is 120/80 mm Hg. Elevated blood pressure is 120-129/under 80 mm Hg. Hypertension, warranting treatment at 130/80 mm Hg, is often asymptomatic and can lead to severe cardiovascular events, aneurysms, peripheral arterial disease, chronic renal disease, or cardiac...
Drug Dosing: Infants and Children
Masonry in Cold and Hot Weather Conditions
Other key practices include keeping masonry units and sand dry and...
