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Noninvasive, continuous blood pressure measurement by arterial tonometry during anesthesia in children. 1994

O Kemmotsu, and M Ohno, and K Takita, and H Sugimoto, and H Otsuka, and Y Morimoto, and T Mayumi
Department of Anesthesiology and Intensive Care, Hokkaido University School of Medicine, Sapporo, Japan.

BACKGROUND The authors' previous study of arterial tonometry in children demonstrated poor agreement of tonometric blood pressure (TBP) measurements with intraarterial blood pressure (IBP) measurements. The aim of the current study is to evaluate the feasibility of TBP measurements in children aged 1-6 yr using a newly designed pediatric sensor housing, by comparing TBP values with values obtained by IBP measurements. METHODS Thirty-four children (aged 1-6 yr, ASA physical status 1-2) were studied undergoing elective abdominal or urologic surgery under general anesthesia. A 22- or 24-G cannula was inserted into the right radial artery. A TBP sensor housing was positioned over the left radial artery. TBP and IBP were continuously monitored and data were periodically sampled during and after intubation, during surgery, and during the recovery period. RESULTS TBP waveforms were similar to those of IBP. Limits of agreement (bias +/- 2 SD) were 12 and -13.3 mmHg for systolic, 11.6 and -10.4 mmHg for mean, and 13.2 and -10.8 mmHg for diastolic pressures for 3,400 paired points. Measurements could not be made in ten children because of insufficient pulse contour. CONCLUSIONS When pulse contour is sufficient for analysis, TBP monitoring provides an apparently safe and accurate method for the continuous measurement of arterial blood pressure during anesthesia in children aged 1-6 yr.

UI MeSH Term Description Entries
D007223 Infant A child between 1 and 23 months of age. Infants
D008365 Manometry Measurement of the pressure or tension of liquids or gases with a manometer. Tonometry,Manometries
D008991 Monitoring, Physiologic The continuous measurement of physiological processes, blood pressure, heart rate, renal output, reflexes, respiration, etc., in a patient or experimental animal; includes pharmacologic monitoring, the measurement of administered drugs or their metabolites in the blood, tissues, or urine. Patient Monitoring,Monitoring, Physiological,Physiologic Monitoring,Monitoring, Patient,Physiological Monitoring
D001795 Blood Pressure Determination Techniques used for measuring BLOOD PRESSURE. Blood Pressure Determinations,Determination, Blood Pressure
D002648 Child A person 6 to 12 years of age. An individual 2 to 5 years old is CHILD, PRESCHOOL. Children
D002675 Child, Preschool A child between the ages of 2 and 5. Children, Preschool,Preschool Child,Preschool Children
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000758 Anesthesia A state characterized by loss of feeling or sensation. This depression of nerve function is usually the result of pharmacologic action and is induced to allow performance of surgery or other painful procedures.

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