Echocardiography in the Presence of Left Bundle Branch Block
Echocardiography in the Presence of Left Bundle Branch Block
Jan 11, 2018
cardioserv.net
Loss of Septal R wave in LBBB #ecg #ekg | ECG Lectures with Reid
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Loss of Septal R wave in LBBB #ecg #ekg | ECG Lectures with Reid
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Septal flash 📌 Associated with left branch lock 🔍 Mechanism: - Early contraction of the SIV towards the VI by asynchronous activation. - Initial "Flash" to the left, followed by a rebound to the right during the ejection. Associated sign: "rocking apical" | Cardiophilia
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Septal flash 📌 Associated with left branch lock 🔍 Mechanism: - Early c…
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Echocardiographic signs of LBBB M-mode: shows paradoxical septal motion — the septum moves inward early and then outward later in systole. 2D echo: demonstrates septal flash (brief early septal contraction), apical rocking (side-to-side movement of the apex), and delayed lateral wall contraction. Doppler: shows prolonged LV pre-ejection period and interventricular mechanical delay (aortic flow starts much later than pulmonary flow). Tissue Doppler (TDI): reveals septal-to-lateral delay in peak s
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Echocardiographic signs of LBBB M-mode: shows paradoxical sept…
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1️⃣ Left Bundle Branch Block (LBBB) • ECG: Wide QRS complex (>120 ms), broad or notched R wave in leads I, V5–V6 • Echo effect: • The interventricular septum contracts early • The left ventricular free wall contracts late • Result: Jerky or paradoxical septal motion • 👉 Most common cause ⸻ 2️⃣ Right ventricular pacing (pacemaker rhythm) • ECG: Pacing spikes with an LBBB-like QRS morphology • Echo: • Abnormal electrical activation leading to septal dyssynchrony • Jerky septal motion is commonly
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1️⃣ Left Bundle Branch Block (LBBB) • ECG: Wide QRS comple…
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PATIENT WITH LT BBB On echocardiography: You’ll often see: Septal flash — brief early systolic leftward motion of the septum. Apical rocking — side-to-side motion of the apex due to asynchronous contraction. Reduced global LV function despite sometimes normal myocardium. | Dr. Fakhri Ibrahim Echocardiography from the beginning to professionalism
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PATIENT WITH LT BBB On echocardiography: You’ll often se…
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