Results
58 patients (mean age 45.9 13.50 years, 52.2% female) and 53 control participants (mean age 41.8 10.3 years, 62.3% male) enrolled in the study. Table 1 presents the clinical characteristics of the study group. Comparable baseline characteristics existed amongst the study groups.
Table 2 displays the 2D transthoracic echocardiographic characteristics of the research group. In the patient group, the left atrial anterior-posterior dimension was substantially greater (p0.001). The left ventricular end-systolic diameter (LVESD) and the left ventricular end-systolic were greater in the patient group (p=0.002, p=0.033, respectively ), as were the mitral inflow late diastolic velocity (A) and the E/Em ratio (E; mitral inflow early diastolic tissue velocity; Em; mitral inflow early diastolic tissue velocity). In the control group, the mitral inflow early diastolic tissue velocity (Em) was greater. (p=0.040) Other echocardiographic parameters did not different significantly between the patient and control groups. Table 3 provides the longitudinal and circumferential strain values of the study group for LA. The maximum LA volume (LAVmax), the minimal LA volume (LAVmin), and the LA maximum volume index were substantially greater in the patient group (p0.001, p0.001, and p=0.001, respectively). In the patient group, the longitudinal and circumferential strain values of LA were considerably lower. (all p values <0,001) LASr, LAScd, LASct, LASr-c, LASct-c, LASr-c, LAScd-c, LASct-c were shown to be considerably lower (p=0.004, p=0.002, p=0.007, p< 0.001, p=0.001, p0.001, p=0.001, p< 0.001, respectively) in individuals with PVC coming from the right ventricle. The longitudinal and circumferential strain values of LA were shown to be considerably lower in individuals with epicardial PVC. (all p values <0.001) (Table 4)
In the correlation study, negative relationships between QRS duration and the circumferential and longitudinal strain values of LA were shown to be statistically significant (all p values< 0.001). (Table 5)
Conversely, substantial positive relationships were found between coupling interval and the circumferential and longitudinal strain values of LA (all p values < 0.001). (Table 6)