Pulse Oximeter Derived Blood Pressure Measurement in Patients With a Continuous Flow Left Ventricular Assist Device

Yaron Hellman, Adnan S. Malik, Kathleen A. Lane, Changyu Shen, I. Wen Wang, Thomas C. Wozniak, Zubair A. Hashmi, Sarah D. Munson, Jeanette Pickrell, Marco A. Caccamo, Irmina Gradus-Pizlo, Azam Hadi

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

Currently, blood pressure (BP) measurement is obtained noninvasively in patients with continuous flow left ventricular assist device (LVAD) by placing a Doppler probe over the brachial or radial artery with inflation and deflation of a manual BP cuff. We hypothesized that replacing the Doppler probe with a finger-based pulse oximeter can yield BP measurements similar to the Doppler derived mean arterial pressure (MAP). We conducted a prospective study consisting of patients with contemporary continuous flow LVADs. In a small pilot phase I inpatient study, we compared direct arterial line measurements with an automated blood pressure (ABP) cuff, Doppler and pulse oximeter derived MAP. Our main phase II study included LVAD outpatients with a comparison between Doppler, ABP, and pulse oximeter derived MAP. A total of five phase I and 36 phase II patients were recruited during February–June 2014. In phase I, the average MAP measured by pulse oximeter was closer to arterial line MAP rather than Doppler (P = 0.06) or ABP (P < 0.01). In phase II, pulse oximeter MAP (96.6 mm Hg) was significantly closer to Doppler MAP (96.5 mm Hg) when compared to ABP (82.1 mm Hg) (P = 0.0001). Pulse oximeter derived blood pressure measurement may be as reliable as Doppler in patients with continuous flow LVADs.

Original languageEnglish (US)
Pages (from-to)424-430
Number of pages7
JournalArtificial Organs
Volume41
Issue number5
DOIs
StatePublished - May 2017

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Keywords

  • Blood pressure
  • Left ventricular assist device
  • Pulse oximeter

ASJC Scopus subject areas

  • Bioengineering
  • Medicine (miscellaneous)
  • Biomaterials
  • Biomedical Engineering

Cite this

Hellman, Y., Malik, A. S., Lane, K. A., Shen, C., Wang, I. W., Wozniak, T. C., Hashmi, Z. A., Munson, S. D., Pickrell, J., Caccamo, M. A., Gradus-Pizlo, I., & Hadi, A. (2017). Pulse Oximeter Derived Blood Pressure Measurement in Patients With a Continuous Flow Left Ventricular Assist Device. Artificial Organs, 41(5), 424-430. https://doi.org/10.1111/aor.12790