Comparison of a Radiofrequency-Based Wireless Pressure Sensor to Swan-Ganz Catheter and Echocardiography for Ambulatory Assessment of Pulmonary Artery Pressure in Heart Failure
Hugo E. Verdejo, MD*,
Pablo F. Castro, MD*,*,
Roberto Concepción, MD ,
Marcela A. Ferrada, RN*,
Mario A. Alfaro, MD,
Milton E. Alcaíno, MD,
Carlos C. Deck, MD, FASCI and
Robert C. Bourge, MD
* Pontificia Universidad Católica de Chile, Santiago, Chile
Hospital DIPRECA, Santiago de Chile, Santiago, Chile
University of Alabama at Birmingham, Birmingham, Alabama
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Figure 1 Heart Failure Sensor
The CardioMEMS Heart Failure Sensor consists of electronic components housed within a hermetically sealed, fused silica capsule. Two wire loops of nitinol prevent sensor distal migration.
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Figure 2 Pulmonary Angiography During Heart Failure Sensor Implantation
CardioMEMS Heart Failure Sensor in the left pulmonary artery (A). A selective angiography shows unimpaired pulmonary artery blood flow (B).
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Figure 4 Comparison Between Heart Failure Sensor and Swan-Ganz PAsys Determination
Bland-Altman analysis (A) and linear correlation at implant (B) and at follow-up (C) between Swan-Ganz and CardioMEMS Heart Failure Sensor (HFS) systolic pulmonary artery pressure (PAsys) measurements. In panel A, data and the associated SD's confidence intervals are combined for the readings taken at initial implant and for the 2 follow-up intervals.
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Figure 5 Comparison Between Heart Failure Sensor and Swan-Ganz PAdia Determination
Bland-Altman analysis (A) and linear correlation at implant (B) and at follow-up (C) between Swan-Ganz and CardioMEMS Heart Failure Sensor (HFS) diastolic pulmonary artery pressure (PAdia) measurements. In panel A, data and the associated SD's confidence intervals are combined for the readings taken at initial implant and for the 2 follow-up intervals.
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Figure 6 Comparison Between Heart Failure Sensor and Echocardiographic PAsys Determination
Bland-Altman analysis (A) and linear correlation (B) between echocardiographic and the CardioMEMS Heart Failure Sensor systolic pulmonary artery (PAsys) measurements (HeartSure, CardioMEMS Inc.).
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