What is abnormal septal motion consistent with LBBB?
Abnormal septal motion during LBBB includes lengthening of the septal myocardium both during early and late systole. In the present study, the 2 phases of septal lengthening are referred to as early and late systolic lengthening, respectively (Figure 3).
What causes abnormal septal motion?
Abnormal septal motion can be caused by an overload of the right ventricle, delayed ventricular filling and abnormal conduction.
What does abnormal septal wall motion mean?
Abnormal septal motion (ASM), or septal bouncing, is a paradoxical bouncing motion of the interventricular septum. 1) During early diastolic period, interventricular septum initially directed towards and moves away from the left ventricle. ASM can be found frequently during echocardiographic examinations.
What does septal bounce mean on Echo?
Septal bounce is a sign of ventricular interdependence on echocardiography, cardiac CT, and cardiac MRI, manifested by paradoxical interventricular septal movement during early diastole (i.e. initial septal movement towards and then away from the left ventricle) seen mainly in constrictive pericarditis and occasionally …
Is paradoxical septal motion normal?
Background. Paradoxical septal motion (PSM) is the systolic movement of the interventricular septum toward the right ventricle despite normal thickening. The PSM is a frequent echocardiographic finding after cardiac surgery.
Does echocardiogram show LBBB?
This test can show signs of a bundle branch block, as well as which side is being affected. Echocardiogram. This test uses sound waves to provide detailed images of the heart’s structure and the thickness of your heart muscle. It can show whether your heart valves are moving normally.
Does LBBB shorten your life?
In young and healthy people, left bundle branch block is rare. This condition seems to have little effect on how long you live if you have no other underlying heart problems. You may not need any treatment at all, . especially when you have no other disease affecting your heart.
What is ventricular septal motion?
The abnormal ventricular septal motion can occur with right ventricle to left ventricle pressure gradient change, when the pressure overcomes the myocardial stress and contractile force or there is a loss of myocardial contractility [1, 4].
Is septal bounce normal?
Abstract. Abnormal septal motion (commonly referred to as septal bounce) is a common echocardiographic finding that occurs with several conditions, including the following: mitral stenosis, left bundle branch block, pericardial syndromes and severe pulmonary hypertension.
What is chronic constrictive pericarditis?
Constrictive pericarditis is long-term, or chronic, inflammation of the pericardium. The pericardium is the sac-like membrane that surrounds the heart. Inflammation in this part of the heart causes scarring, thickening, and muscle tightening, or contracture.
How common is abnormal septal motion in patients with LBBB?
Of the control group of 49 patients without LBBB but with cardiac disorders similar to the cases with LBBB, only two showed abnormal septal motion. However, pre-ejection motion was not seen in these two cases. During right ventricular pacing abnormal septal motion was observed in three out of ten cases.
What changes the magnitude of preejection septal shortening during LBBB?
The magnitude of preejection septal shortening was modified by load alterations. Leftward preejection motion of the septum during LBBB is mainly a result of active septal contraction, whereas alterations in diastolic ventricular pressures modulate the amplitude of this motion.
How does regional left ventricular function modify septal motion in left bundle branch block?
This study sought to investigate how regional left ventricular (LV) function modifies septal motion in left bundle branch block (LBBB). In LBBB, the interventricular septum often has marked pre-ejection shortening, followed by immediate relengthening (rebound stretch).
Is there an interaction between septal and lateral wall function in LBBB?
This interaction between septal and LV lateral wall function in LBBB was confirmed in the clinical study by the observation that patients with LBBB and LV lateral wall scar had apparently normal septal contraction patterns.