Tīmeklis26% to 30% of non-PV foci.6–8 As in PV sleeves, atrial myocardial tissue has been demonstrated to extend into the SVC sleeves for approximately 2 to 5 cm.5,6 Extrasystolic activity arising from non-PV atrial structures, such as SVC, may compromise the success of PV isolation for the treatment of AF.7 In addition to PV … Tīmeklis2024. gada 3. okt. · The PV myocardial sleeve area was measured based on the 3D voltage mapping results. The PV myocardial sleeve area index was calculated by dividing the sleeve area of each PV by the average sleeve area of all PVs in each patient. The diameter and volume of the arrhythmogenic PVs were larger than those …
Mechanical function deterioration of the four PV sleeves in the …
TīmeklisObjectives: To review the electrophysiologic effects of antiarrhythmic agents in pulmonary veins (PV) sleeve preparations. Background: Ectopic activity arising from … TīmeklisReentrant delay (time from wave-front entering to time of reentrant exit from the PV sleeve) was remarkably consistent between patients (125 + 46ms, range 30-260 ms, … sheldon j rich
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TīmeklisPV sleeve. The circumferential contraction of PV sleeves was external calcium-dependent. Frequency-force relation displayed a negative staircase at 0.1–0.5Hz and a positive staircase at 1–5Hz. Post-rest potentiation was prominent between 15s and 120s. Intracellular action potential recording did not display any automaticity or … TīmeklisPV Calculation. PV is a means of measuring the performance capabilities of bearings. P is expressed as pressure or pounds per square inch on the projected area of the bearing. V is velocity in feet per minute of the wear surface (surface feet per minute). For sleeve (plain) bearings, the surface speed is .262 (pi ÷12) x RPM x shaft diameter in ... Tīmeklis2014. gada 31. dec. · Pulmonary vein (PV) sleeves are established as the main substrate taking part in the mechanisms of atrial fibrillation (AF) initiation. However, … sheldon jordan