Key result
Noninvasive blood pressure measurement using the Vasotrac device correlated closely with intraarterial blood pressure for systolic (r=0.82), diastolic (r=0.83), and mean BP (r=0.90).
Why the study?
Does the Vasotrac device accurately measure arterial blood pressure compared to invasive monitoring in adolescents undergoing scoliosis surgery?
Observational (n=11)
Does the Vasotrac device accurately measure arterial blood pressure compared to invasive monitoring in adolescents undergoing scoliosis surgery?
The Vasotrac noninvasive arterial blood pressure monitor provides reliable near-continuous BP monitoring comparable to invasive methods in adolescents during scoliosis surgery in the prone position.
Answers are grounded in this paper and cite their sources.
Supports Vasotrac for BP monitoring in prone adolescent scoliosis surgery; leaves open validation in broader populations before practice change.
UNLABELLED: The Vasotrac device (Medwave, Arden Hills, MN) allows noninvasive measurement of arterial blood pressure (BP) and arterial waveform. We have previously demonstrated agreement between the Vasotrac and continuous intraarterial BP monitoring in children with a stable circulation after cardiac surgery in the cardiac intensive care unit. To assess this monitor during different physiologic conditions, we studied the Vasotrac in anesthetized adolescent children undergoing scoliosis surgery in the prone position, with or without controlled hypotension. Eleven children undergoing surgery for idiopathic scoliosis were enrolled in this study. The anesthetic consisted of primarily a nitrous oxide and narcotic technique with controlled hypotension obtained using IV labetalol. Data were analyzed using correlations, mean error, and Bland-Altman plots. Noninvasive BP measured by the Vasotrac correlated closely with intraarterial BP. Waveforms displayed by the two systems were qualitatively similar. Correlation between the two methods for systolic, diastolic and mean BP was r = 0.82, r = 0.83, and r = 0.90, respectively. We conclude that noninvasive BP measurement using the Vasotrac monitor enables near-continuous and reliable monitoring of BP during anesthesia in the prone position and pharmacologic-induced hypotension. IMPLICATIONS: The Vasotrac, a noninvasive arterial blood pressure monitor, performs well in the prone position in adolescent patients undergoing scoliosis surgery using a technique of mild-to-moderate induced hypotension.
No takes yet. Share an insight, caveat, or question.
McCann et al. (2005) conducted an observational in Idiopathic scoliosis (n=11). Vasotrac device vs. Invasive arterial blood pressure monitoring was evaluated on Correlation between noninvasive and intraarterial blood pressure (r = 0.90 for mean BP). Noninvasive blood pressure measurement using the Vasotrac device correlated closely with intraarterial blood pressure for systolic (r=0.82), diastolic (r=0.83), and mean BP (r=0.90).
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: