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Assessment of the performances of three oscillometric blood pressure monitors for neonates using a simulator
G Papadopoulos1, S Mieke, M Elisaf
1Department of Anaesthesiology, University of Ioannina, Greece.
Background:
The majority of monitors for non-invasive measurement of blood pressure in neonates and infants use the oscillometric method.
Objective:
To use a simulator to investigate the overall system accuracy for three oscillometric blood pressure monitors. The tested devices are DINAMAP 8100 (Critikon), SpaceLabs M90426 (SpaceLabs Medical)and the module HP M 1008B (Hewlett-Packard).
Methods:
The blood pressure values obtained by the three devices were compared with those of the invasive reference. A blood pressure simulator was used for testing the performance of the three blood pressure monitors.
Results:
The Dinamap and SpaceLabs readings are generally in good agreement with the invasive reference. In contrast, the HP M 1008B readings for the diastolic and mean arterial pressures are inaccurate (the mean errors are 21 and 15mmHg, respectively).
Conclusion:
These results contradict our previously published data obtained when a different simulator (Cufflink)was used. These findings are important, because blood pressure values that are too low can result in a different therapeutic approach being applied, for newborn babies have only a small range of mean arterial pressure for the autoregulation of the cerebral blood flow.