Abstract
BACKGROUND AND AIM: The measurement of blood pressure (BP) in patients with CF-VADs can present unique challenges because traditional BP measurement by auscultation or automated cuff is less reliable. We tested the efficacy of blood pressure estimation by using the Sphygmomanometry combined with finger pulse oximetry. METHODS: 51 patients, 24 implanted with HM II, 4 implanted with HVAD, 23 implanted with HM3 were prospectively studied during follow up period and mean arterial pressure was estimated by using 3 different methodologies; ultrasound doppler, pulse oximeter and automated blood pressure cuff. For each method 3 consecutive evaluations were conducted in 3 follow-up visits. RESULTS: For each patient 9 different evaluations were obtained, 3 for each method. The overall success rate was 100% for blood pressure assessment conducted with doppler and pulse oximeter, 80% - 87% the rate for automated monitor evaluations. 100 was the percentage of three successfull consecutive measurements for the first two methodologies and 60 the percentage for the last one. Pearson's correlation analysis showed a good correlation when measurements of doppler and pulse oximeter were compared. High variability emerged between estimations obtained by using automated monitor and poor correlation was found when this method was compared with doppler an pulse oximeter. CONCLUSION: According to our results pulse oximeter method showed high success rate and a good correlation level with the standard proedure. Our data encourage the use of oximter for domiciliary blood pressure assessment in patients implanted with continuous flow device.
Published Version
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