Evaluation Of Left Atrial Myocardial Function In Hypertensive Patients With Paroxysmal Atrial Fibrillation Using Strain Rate Imagine

Objective:To evaluate the alteration of left atrial myocardial function in hypertensive patients with paroxysmal atrial fibrillation using strain rate imaging and to further explore its clinical significance. Method:35 solitary hypertensive patients,32 hypertensive patients with paroxysmal atrial fibrillation and 33 health subjects were enrolled. Mean systolic peak strain rate, mean early diastolic peak strain rate and mean late diastolic peak strain rate (MSRs, MSRe and MSRa) were calculated using strain rate imaging. Results:There was a significantly step-down change among control group, hypertensive group and hypertensive with paroxysmal atrial fibrillation group in MSRs (P<0.001), Compared with control group, MSRe was significantly decreased in solitary hypertensive group (P<0.01), MSRe had no significant difference in hypertensive with paroxysmal atrial fibrillation group (P>0.05), MSRa was significantly increased in solitary hypertensive group (P<0.01), while MSRa was decreased in hypertensive with paroxysmal atrial fibrillation group (P<0.05). Compared with solitary hypertensive group, MSRe had no significant difference (P>0.05), while MSRa was decreased in hypertensive with paroxysmal atrial fibrillation group (P<0.01). Discussion:The left atrial myocardial function in hypertensive patients is significantly impaired, which is worsen in hypertensive patients with paroxysmal atrial fibrillation, Real-time triplane strain rate imaging provides important applicable signification in the comprehensive evaluation of left atrial myocardial function in hypertensive patients.