Hemodynamics, fluids & transfusion

Continuous non-invasive vs. invasive arterial blood pressure monitoring during neuroradiological procedure: a comparative, prospective, monocentric, observational study

Perioper Med (Lond)Published Prospective observational method-comparison study

Authors' conclusion

Nexfin is not strictly interchangeable with artery catheter for ABP measuring.

Study context

Population
Consecutive patients undergoing a neuroradiological procedure who needed an arterial catheter for BP measurement
Participants
50 patients
Exposure
Nexfin vs radial artery catheter for arterial blood pressure (ABP) measurement
Outcome
Accuracy and clinical concordance of ABP (systolic, mean, diastolic) between devices (Bland-Altman and error grid analyses)
Methodological detailscomparative, monocentric
  • Comparative
  • Monocentric

Main finding

As reported in the abstract

Accuracy and clinical concordance (Nexfin vs artery catheter)
Limits of agreement
Bias (limits of agreement (LOA)), SAP 9.6 mmHg (CI - 15.6 to 34.8)
Limits of agreement
Bias (LOA), MAP - 0.8 mmHg (CI - 17.2 to 15.6)
Accuracy and clinical concordance (Nexfin vs artery catheter)
r2, SAP 0.78; P < 0.001
Accuracy and clinical concordance (Nexfin vs artery catheter)
r2, MAP 0.80; P < 0.001
Nexfin measures in error grid risk zone A or B
99%
Hypertension events not detected by Nexfin
65.7%
Hypotensive events not detected by Nexfin
41%

Observational data: associations, not effects.

Original publication

Continuous non-invasive vs. invasive arterial blood pressure monitoring during neuroradiological procedure: a comparative, prospective, monocentric, observational study. Perioper Med (Lond). Published 22 July 2024. doi:10.1186/s13741-024-00442-3

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