Wireless Acoustic Communication With a Miniature Pressure Sensor in the Pulmonary Artery for Disease Surveillance and Therapy of Patients With Congestive Heart Failure

Abstract

This pilot study demonstrates, for the first time, that acoustic wireless communication with a miniature implanted sensor is feasible and provides repeated PA pressure measurement. This feat makes possible multiple novel applications for monitoring and therapeutic interventions based on measurements from deeply implanted devices.

Comparison of a Radiofrequency-Based Wireless Pressure Sensor to Swan-Ganz Catheter and Echocardiography for Ambulatory Assessment of Pulmonary Artery Pressure in Heart Failure

“…The potential of PAP as a therapeutic guidance tool needs to be addressed in further studies. The main objective of this report was to evaluate the accuracy of HFS determinations compared with SG and ECHO, showing an excellent correlation with both new and traditional methods, high reproducibility of the measurements, low interobserver variability, and a favorable safety profile (33,38). Systolic pressure as determined with HFS tended to be higher than SG measurements.…”

Omnidirectional Ultrasonic Powering for Millimeter-Scale Implantable Devices

“…Additionally, packaging PZT in a hard shell enclosure (e.g., titanium) can effectively seal the material and prevent any leaching; this approach was used in a cardiac pressure sensing system developed by Remon Medical Inc. (these systems were implanted in patients for several years). [31]. Table 1 summarizes various properties of PZT and geometrical dimensions of the PZT transmitter and receivers used in this work.…”

Symptom perception in CHF: (why mind matters)

“…3 Sleep disordered breathing has been documented in 45-82% of individuals with CHF; insomnia is present in 1 out of 3 individuals [21]. Cheyne stokes respiration is common and results in frequent awakenings [22].…”

“…Evolving technology provides the ability to better define right versus left sided failure and diastolic versus systolic dysfunction. Measurement of fluid overload is now possible utilizing implanted impedence devices [1][2][3].…”