Rijuven out of Wexford, Pennsylvania is releasing the CardioSleeve for Pediatrics, a 3-lead ECG attachment and digital auscultation system that snaps onto just about any stethoscope. The device both monitors the acoustic signature of the heart as well as the ECG, hopefully offering easier identification of murmurs, arrhythmias, and other conditions. The ECG uses dry electrodes, so using a gel is not necessary, allowing the procedure to feel very much like a typical auscultation.
The device comes with a HIPAA compliant smartphone app that displays heart parameters such as the cardiac function and cardiac index, plays back auscultation recordings, and allows to synchronize the ECG to the murmurs for easy comparison. It also performs murmur and electrical signal detection to help with diagnosis.
More about the CardioSleeve from the product page:
CardioSleeve records ECG at Leads I, II and III and displays high fidelity tracings on any connected device. Heart Rate and a digital caliper for decision support are also provided.
Cardiac Function incorporates Systolic Performance Index (SPI) Analysis. SPI is a simplified Myocardial Performance index (MPI) or (Tei index).
Mycardial performance Index (MPI) has been regarded as an important parameter in the evaluation of ventricular systolic function in congestive heart failure. The myocardial performance index (MPI) or (Tei index), which predicts systolic and diastolic function, is defined as the sum of isovolumic relaxation time (IVRT) and isovolumic contraction time (IVCT) divided by left ventricular ejection time (LVET) (MPI=[IVRT+IVCT]/LVET).
The MPI formula was simplified by omitting IVRT (IVCT/LVET), to define Systolic Performance Index (SPI). The SPI ratio was found to be inversely correlated with left ventricular ejection fraction (LVEF) and positively correlated with MPI. The sensitivity and specificity of an SPI value ≤0.66 to predict an LVEF value ≥55% were found to be 100% and 90.9%, respectively. In terms of SPI, this ratio was found to be >0.66, even exceeding 1 in severe CHF (LVEF ≤20%) .