Work

Clinical agreement of a novel algorithm to estimate radial artery blood pressure from the non-invasive finger blood pressure

Year: 2022

Type: article

Abstract: Study objective A new algorithm was developed that transforms the non-invasive finger blood pressure (BP) into a radial artery BP ( B ̂ P Rad ), whereas the original algorithm estimated brachial BP ( B ̂ P Bra ). In this study we determined whether this new algorithm shows better agreement with invasive radial BP than the original one and whether in the operating room this algorithm can be used safely. Design, setting and patients This observational study was conducted on thirty-three non-cardiac surgery patients. Intervention and measurements Invasive radial and non-invasive finger BP were measured, of the latter B ̂ P Rad and B ̂ P Bra were transformed. Agreement of systolic, mean, and diastolic arterial BP (SAP, MAP, and DAP, respectively) was assessed traditionally with Bland-Altman and trend analysis and clinically safety was quantified with error grid analyses. A bias (precision) of 5 (8) mmHg or less was considered adequate. Main results Thirty-three patients were included with an average of 676 (314) 20 s segments. For both comparisons, bias (precision) of MAP was within specified criteria, whereas for SAP, precision was higher than 8 mmHg. B ̂ P Rad showed a better agreement than B ̂ P Bra with BP Rad for DAP values (bias (precision): 0.7 (6.0) and − 6.4 (4.3) mmHg, respectively). B ̂ P Rad and B ̂ P Bra both showed good concordance in following changes in BP Rad (for all parameters overall degree was <7°). There were slightly more measurement pairs of MAP within the no-risk zone for B ̂ P Rad than for B ̂ P Bra (96 vs 77%, respectively). Conclusions In this cohort of non-cardiac surgery patients, we found good agreement between BP Rad and B ̂ P Rad . Compared to B ̂ P Bra , B ̂ P Rad shows better agreement although clinical implications are small. This trial was registered with ClinicalTrials.gov ( https://clinicaltrials.gov/ct2/show/NCT03795831 ).

Source: Journal of Clinical Anesthesia

DOI: 10.1016/j.jclinane.2022.110976

Authors: Eline Kho, Björn J.P. van der Ster, Ward H. van der Ven, Alexander P.J. Vlaar, Rogier V. Immink, Denise P. Veelo

Institutions: Amsterdam University Medical Centers, University of Amsterdam

Language: English

Topic: Hemodynamic Monitoring and Therapy

Subfield: Surgery

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: hybrid

Estimated APC paid: $3,720