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Blood pressure and response to "stress" in 11-16 year old children
Insights
Children with a history of maternal hypertension showed higher resting blood pressure. However, their cardiovascular responses to various stressors were similar to those without such a history.
Area of Science:
- Pediatric Cardiology
- Cardiovascular Physiology
- Hypertension Research
Background:
- Maternal hypertension during pregnancy is a risk factor for cardiovascular issues in offspring.
- Understanding the long-term cardiovascular implications in children with a maternal history of hypertension is crucial.
Purpose of the Study:
- To investigate resting blood pressure and cardiovascular stress responses in adolescents with varying maternal hypertension histories.
- To determine if maternal hypertensive history influences pediatric cardiovascular reactivity.
Main Methods:
- Study included 60 adolescents (11-16 years) divided into three groups based on maternal history: hypertensive (HT), normotensive with prior hypertensive pregnancy (NT), and control (C).
- Measured resting blood pressure and cardiovascular responses (blood pressure, heart rate, cardiac output) to noise stimulation, video games, and physical exercise.
Main Results:
- Adolescents in the HT group exhibited significantly higher resting systolic blood pressure compared to NT and C groups.
- Cardiovascular responses to noise stimulation and video games were comparable across all groups.
- Physical exercise elicited a slight decrease in diastolic blood pressure in NT and C groups, but not in the HT group.
Conclusions:
- While a maternal history of hypertension is associated with elevated resting blood pressure in adolescents, it does not appear to alter their fundamental cardiovascular response patterns to acute stressors.
- Further research is needed to explore the long-term cardiovascular health implications in this population.
Abstract:
Blood pressure at rest and cardiovascular response to "stress" were studied in 27 girls and 33 boys 11-16 years old. One group (HT, n = 23) had hypertensive mothers with a previous hypertensive pregnancy, another group (NT, n = 20) had normotensive mothers with a previous hypertensive pregnancy and the control group (C, n = 17) had normotensive mothers with normotensive pregnancies. Resting blood pressure was 124/71 mmHg (HT), 117/67 mmHg (NT) and 112/65 mmHg in the 3 groups. Systolic pressure was significantly different in all 3 groups (p less than 0.05 - p less than 0.001). Responses to noise stimulation (100 dBA) were identical in all groups with increases in diastolic and mean arterial blood pressure and cardiac output. During a video game session increases in blood pressure and heart rate were equal in the groups but during physical exercise a slight decrease in diastolic blood pressure was seen in the NT and C groups only. Differences in blood pressure in children with varying maternal history of hypertension do not seem to reflect alterations in the cardiovascular response pattern to "stress".