NORMATIVE VALUES FOR PEDIATRIC PATIENTS UNDERGOING THE BRUCE PROTOCOL IN THE MODERN ERA

Background

The modified Bruce protocol is frequently used for exercise treadmill testing with pediatric normative values established by Cumming in 1978. Demographics and physical fitness levels of children have evolved, and other studies have lacked power to identify differences between these eras. We created a new set of normative values for pediatric patients using a modern population.

Methods

A retrospective chart review of 834 exercise treadmill studies between 2008-2014 using the modified Bruce protocol was performed. Testing was performed for clinical indications on patients > 6 years who had trivial to no heart disease and demonstrated a maximal effort during exercise. Data collected included demographics, height, weight, body mass index and percentile, blood pressures at rest and at peak exercise, resting and staged heart rates and total exercise duration. Data were analyzed on SPSS software and normative values created by age and gender.

Results

Normative values were established based on the current era of patients (Table 1). The values had some variation compared to the data from Cumming that was not statistically significant. Comparisons between exercise time and independent variables noted a correlation between BMI percentile and total exercise duration with an R= 0.63.

Conclusions

We have established a new set of normative values for a modern pediatric population, with inclusion of overweight and obese children. There is a correlation between total exercise time and body mass index. 

 


Autor / Fonte:Sara E. Creighton; Joshua Kovach; Michael Danduran; et al. J Am Coll Cardiol. 2016;67(13_S):958-958. doi:10.1016/S0735-1097(16)30959-7.
Link: http://content.onlinejacc.org/data/Journals/JAC/935148/09597.pdf