Non-invasive continuous arterial pressure and pulse pressure variation measured with Nexfin(®) in patients following major upper abdominal surgery: a comparative study.
We compared the accuracy and precision of the non-invasive Nexfin(®) device for determining systolic, diastolic, mean arterial pressure and pulse pressure variation, with arterial blood pressure values measured from a radial artery catheter in 19 patients following upper abdominal surgery. Measurements were taken at baseline and following fluid loading. Pooled data results of the arterial blood pressures showed no difference between the two measurement modalities. Bland-Altman analysis of pulse pressure variation showed significant differences between values obtained from the radial artery catheter and Nexfin finger cuff technology (mean (SD) 1.49 (2.09)%, p < 0.001, coefficient of variation 24%, limits of agreement -2.71% to 5.69%). The effect of volume expansion on pulse pressure variation was identical between methods (concordance correlation coefficient 0.848). We consider the Nexfin monitor system to be acceptable for use in patients after major upper abdominal surgery without major cardiovascular compromise or haemodynamic support.
Department of Intensive Care, Leiden University Medical Centre, Leiden, the Netherlands.
R B P
RB
de Wilde
Department of Anaesthesiology, Leiden University Medical Centre, Leiden, the Netherlands.
F
F
de Wit
Department of Anaesthesiology, Leiden University Medical Centre, Leiden, the Netherlands.
B F
BF
Geerts
Department of Anaesthesiology, Leiden University Medical Centre, Leiden, the Netherlands.
A L
AL
van Vliet
Department of Anaesthesiology, Leiden University Medical Centre, Leiden, the Netherlands.
L P H J
LP
Aarts
Department of Anaesthesiology, Leiden University Medical Centre, Leiden, the Netherlands.
J
J
Vuyk
Department of Intensive Care, Leiden University Medical Centre, Leiden, the Netherlands.
J R C
JR
Jansen
D000005:Abdomen / Q000601:surgery*; D062186:Arterial Pressure / Q000502:physiology; D001794:Blood Pressure / Q000502:physiology*; D001795:Blood Pressure Determination / Q000295:instrumentation* / Q000379:methods*; D015924:Blood Pressure Monitors; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011182:Postoperative Care / Q000295:instrumentation / Q000379:methods*; D015203:Reproducibility of Results
arterial blood pressure; monitoring; pulse pressure variation