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Short‐Term Reproducibility Over Time of Right Ventricular Pulse Pressure as a Potential Hemodynamic Sensor for Ventricular Tachyarrhythmias
Author(s) -
ELLENBOGEN KENNETH A.,
WOOD MARK A.,
KAPADIA KETAN,
LU BIN,
VALENTA HARRY
Publication year - 1992
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1992.tb03088.x
Subject(s) - medicine , cardiology , reproducibility , pulse (music) , pulse pressure , hemodynamics , ventricular tachycardia , ventricular pressure , blood pressure , anesthesia , statistics , mathematics , detector , electrical engineering , engineering
The implantable cardioverter defibrillator (ICD) has been shown to effectively terminate episodes of ventricular tachyarrhythmias. Multiple investigators have suggested that the incorporation of hemodynamic sensors may allow ICDs to differentiate between hemodynamically unstable and stable ventricular tachyarrhythmias (VT), as well as differentiate ventricularfrom supraventricular tachycardias. Right ventricular (RV) pulse pressure has been shown to possess acceptable characteristics as a sensor for incorporation in ICDs. We sought to determine the short‐term reproducibility of RV pulse pressure measurements by comparing RV pulse pressure measured during two separate episodes of VT in each of ten study patients. The mean VT cycle length for VT episode 1 was 293 ± 15 msec, and was 298 ± 15 msec for VT episode 2 (P = NS). The decrease in mean arterial pressure was 40 ± 7 mmHg in episode 1 and 37 ± 7 mmHg in episode 2 (P = NS). The decrease in RV pulse pressure during episode 1 was ‐13 ± 2 mmHg, and ‐ 12 ± 2 during episode 2 (P ‐ NS). The decrease in RV pulse pressure during episodes of VT at two different times during a single electrophysiology study is highly reproducible, suggesting that RV pulse pressure may be a reliable sensor aver time.