Non-Invasive Blood Pressure Measurement in Extremely Preterm Neonates: Comparative Analysis of Different Methods
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Date
2025-06
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Indian Academy of Pediatrics
Abstract
OBJECTIVES To compare non-invasive (Doppler and Oscillometric) and invasive (indwelling umbilical arterial catheter, UAC) methods for measuring blood pressure in extremely preterm neonates. METHODS Neonates < 28 weeks gesta?on were recruited if UAC was inserted as part of their clinical care. Blood pressure measured 4–6 hourly by Oscillometric and Doppler methods was compared with invasive method (10–15 readings/baby). RESULTS 438 blood pressure recordings were taken from 11 neonates. Compared to invasive method, non-invasive methods underes?mated ( P = 0.630) and overes?mated ( P = 0.431 for > 10% overes?ma?on, P = 0.960 for > 20% overes?ma?on) blood pressure. The frequency of blood pressure being within 10% of UAC reading was higher with the Oscillometric method compared to Doppler (41% vs 17%). CONCLUSIONS Compared to invasive arterial recording, non-invasive methods underes?mated as well as overes?mated blood pressure in extremely preterm neonates. Oscillometric methods are more reliable compared to Doppler methods.
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Keywords
Doppler, Oscillometric, Pulse oximeter
Citation
Garg Shalabh, Zafar Adnan . Non-Invasive Blood Pressure Measurement in Extremely Preterm Neonates: Comparative Analysis of Different Methods. Indian Pediatrics. 2025 Jun; 62(6): 433-436