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- Title
Pulse Oximeter Derived Blood Pressure Measurement in Patients With a Continuous Flow Left Ventricular Assist Device.
- Authors
Hellman, Yaron; Malik, Adnan S.; Lane, Kathleen A.; Shen, Changyu; Wang, I‐Wen; Wozniak, Thomas C.; Hashmi, Zubair A.; Munson, Sarah D.; Pickrell, Jeanette; Caccamo, Marco A.; Gradus‐Pizlo, Irmina; Hadi, Azam
- 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.
- Subjects
BLOOD pressure measurement; PULSE oximeters; BLOOD circulation; BLOOD flow; PATIENTS
- Publication
Artificial Organs, 2017, Vol 41, Issue 5, p424
- ISSN
0160-564X
- Publication type
Article
- DOI
10.1111/aor.12790