The phrase "atrial contraction" is correct and usable in written English.
It can be used in medical or biological contexts, particularly when discussing the heart's function and the phases of the cardiac cycle.
Example: "During the cardiac cycle, atrial contraction occurs just before the ventricles contract, ensuring that blood is efficiently pushed into the ventricles."
Alternatives: "atrial systole" or "contraction of the atria".
The electrical impulse travels through the atria, signaling the muscle to contract; each atrial contraction shows on the ECG as a p wave.
The ratio between peak filling at early diastole and diastolic atrial contraction was calculated.
Custom software was developed to detect atrial contraction using the ACC enabling atrioventricular (AV) synchronous pacing.
Three ECG parameters associated with postoperative atrial fibrillation were observed: Premature atrial contraction, p-wave index, and p-frontal axis.
The main mechanisms known to act during LV diastolic filling are active relaxation4, restoring forces generated by elastic energy stored within the myocardium1,9,10 and atrial contraction.
Genetic manipulations were performed to reduce hematopoiesis and inhibit atrial contraction to lower WSS in synchrony with attenuation of oscillatory shear index (OSI) during ventricular development.
Diastolic function did not change after VLCD in contrast to previous studies in uncomplicated T2D that found significant improvements in the ratio between peak filling at early diastole and diastolic atrial contraction after prolonged caloric restriction27.
From the transmitral flow rate graphs, the following LV diastolic function parameters were determined using MASS software: maximal flow velocities and peak filling rate in early diastole and at diastolic atrial contraction.
At late diastole, a negative Doppler pulse was visible 93 ms after the start of the spectrogram, possibly due to atrial contraction, and the flow was temporarily reversed (Fig. 4b).
With increasing gestational age, mitral peak velocities of early diastole increased (r = 0.82, p <0.01) with little change in peak velocity during atrial contraction.
While VLCD did not influence diastolic function, as the ratio of peak filling at early diastole and diastolic atrial contraction, the downslope after early peak filling rate, and the estimated filling pressure remained unchanged, VLCD did decrease LV mass and improved systolic cardiac function, as evidenced by an increased ejection fraction.
