Normal rangeMeta-analysisEstablishing normal values of left atrial (LA) phasic strains and strain rates is essential for distinguishing between normal and abnormal functions, determining the degree of abnormality, and understanding the clinical significance of reported values in pediatrics. This meta-...
The normal range for a heart rate is 60 to 100 beats a minute. Your heart is made up of four chambers — two upper chambers (atria) and two lower chambers (ventricles). Within the upper right chamber of your heart (right atrium) is a group of cells called the sinus node. This is ...
The results confirm good intra-study reproducibility, with mean values in the upper range of previous meta-analyses. In the future automated border-detection algorithms may be able to generate highly reproducible normal values. Furthermore, the study showed atrial S/SR as an additional indicator of...
(redirected fromatrial tachycardia) Thesaurus Medical Acronyms Encyclopedia tach·y·car·di·a (tăk′ĭ-kär′dē-ə) n. A rapid heart rate, especially one above 100 beats per minute in an adult. [tachy-+ Greekkardiā,heart; seecardia.] ...
In atrial fibrillation (AF), the atria depolarize from multiple foci at a very rapid rate with most of the wave fronts are unable to cross the AV node to the ventricles due to the slow conduction speed in the AV node. The result is a heart rate that varies from normal to elevated (e...
Empty CellLenient Rate Control (n = 261)Strict Rate Control (n = 256)p Value Age, yrs 68 ± 8 68 ± 9 0.45 Male 174 (66.7) 166 (64.8) 0.66 Duration of any AF, months 0.27 Median 15 20 Interquartile range 6–55 5–63 Duration of permanent AF, months 0.63 Median 3 2 Inter...
Effects of heart rate on ventricular size, stroke volume, and output in the normal human fetus: a prospective Doppler echocardiographic study. The effect of heart rate on cardiac output in the fetal heart is controversial. We used Doppler echocardiography to investigate the effects of increasing h...
(1000 ms cycle length (CL)), resulting in 68 beating LMS. Atrial LMS refractory period was determined at 192 ± 26 ms. Fixed rate pacing with a CL of 333 ms was applied as atrial tachyarrhythmia (AT) model. This novel state-of-the-art platform for AT research can be used to ...
as shown in the Japanese Niigata preventive study.23The hazard ratios for AF were 1.32 (1.08–1.62) and 1.57 (0.89–2.77) forglomerular filtration rate30 to 59 and less than 30 mL/min per 1.73 m2, respectively.23The presence of AF in patients with normal renal function at entry also pred...
Patients in the fibrosis-guided ablation plus PVI group experienced a higher rate of safety outcomes (9 [2.2%] vs 0 in PVI group; P = .001). Six patients (1.5%) in the fibrosis-guided ablation plus PVI group had an ischemic stroke compared with none in PVI-only group. Two ...