Searched for: person:fridmv01
Cardiac Rhythm Device Threshold Testing Via Pulse Oxymetry
Fridman, Vladimir; Saponieri, Cesare; Sherif, Nabil El; Turitto, Gioia
Threshold testing of cardiac rhythm devices is essential to monitoring the proper functioning of such devices (1). However, the currently method of applying multiple ECG leads to the patient is burdensome and time consuming (2). We are presenting a completely new way to perform cardiac rhythm device threshold testing using pulse oximetry. Twenty patients, with varying cardiac rhythm devices and pacing modes, were enrolled and had their atrial and ventricular thresholds tested. A comparison was made between simultaneous threshold determinations via the standard EGM based method and the new pulse oximetry based method. 75% of the ventricular threshold tested and 58% of the atrial thresholds tested were the same with the two testing methods. The remainder of the tests (25% of ventricular threshold and 42% of the atrial threshold tests) varied by +0.25 V. This study shows that pulse oximetry based testing is an accurate, reliable, and easy way to perform cardiac rhythm device threshold testing and may complement traditional methods to perform such tests in the future.
PMCID:5089475
PMID: 27909500
ISSN: 1941-6911
CID: 3094752
Path length entropy analysis of diastolic heart sounds
Griffel, Benjamin; Zia, Mohammad K; Fridman, Vladamir; Saponieri, Cesare; Semmlow, John L
Early detection of coronary artery disease (CAD) using the acoustic approach, a noninvasive and cost-effective method, would greatly improve the outcome of CAD patients. To detect CAD, we analyze diastolic sounds for possible CAD murmurs. We observed diastolic sounds to exhibit 1/f structure and developed a new method, path length entropy (PLE) and a scaled version (SPLE), to characterize this structure to improve CAD detection. We compare SPLE results to Hurst exponent, Sample entropy and Multiscale entropy for distinguishing between normal and CAD patients. SPLE achieved a sensitivity-specificity of 80%-81%, the best of the tested methods. However, PLE and SPLE are not sufficient to prove nonlinearity, and evaluation using surrogate data suggests that our cardiovascular sound recordings do not contain significant nonlinear properties.
PMCID:3741681
PMID: 23930808
ISSN: 0010-4825
CID: 966852
Practical manual of echocardiography in the urgent setting
Fridman, Vladimir; Garcia, Mario J
Hoboken, N.J. : Wiley-Blackwell, 2013
Extent: xiv, 263 p.
ISBN: 1299402658
CID: 1690262
Ultrasound physics
Chapter by: Fridman, Vladimir
in: Practical manual of echocardiography in the urgent setting by Fridman, Vladimir; Garcia, Mario J [Eds]
Hoboken, N.J. : Wiley-Blackwell, 2013
pp. 1-22
ISBN: 1299402658
CID: 1690272
The transthoracic examination
Chapter by: Fridman, Vladimir; Finkielstein, Dennis
in: Practical manual of echocardiography in the urgent setting by Fridman, Vladimir; Garcia, Mario J [Eds]
Hoboken, N.J. : Wiley-Blackwell, 2013
pp. 23-40
ISBN: 1299402658
CID: 1690282
The right-sided heart valves
Chapter by: Levine, Michael J; Fridman, Vladimir
in: Practical manual of echocardiography in the urgent setting by Fridman, Vladimir; Garcia, Mario J [Eds]
Hoboken, N.J. : Wiley-Blackwell, 2013
pp. 113-128
ISBN: 1299402658
CID: 1690292
Prosthetic heart valves
Chapter by: Gujja, Karthik; Fridman, Vladimir
in: Practical manual of echocardiography in the urgent setting by Fridman, Vladimir; Garcia, Mario J [Eds]
Hoboken, N.J. : Wiley-Blackwell, 2013
pp. 129-140
ISBN: 1299402658
CID: 1690302
The great vessels
Chapter by: Fridman, Vladimir; Prabhu, Hejmadi
in: Practical manual of echocardiography in the urgent setting by Fridman, Vladimir; Garcia, Mario J [Eds]
Hoboken, N.J. : Wiley-Blackwell, 2013
pp. 141-152
ISBN: 1299402658
CID: 1690312
Post-procedural complications
Chapter by: Fridman, Vladimir
in: Practical manual of echocardiography in the urgent setting by Fridman, Vladimir; Garcia, Mario J [Eds]
Hoboken, N.J. : Wiley-Blackwell, 2013
pp. 244-247
ISBN: 1299402658
CID: 1690322
ECG CHANGES DURING CARDIAC ISCHEMIA IN PACEMAKER DEPENDENT PATIENTS [Meeting Abstract]
Saponieri, C; Yassin, H; Diwan, R; Fridman, V; Eslava, D; Huang, Y; Vasavada, BC; Turitto, G; El-Sherif, N
ISI:000296255000345
ISSN: 1045-3873
CID: 1690342