2024年10月8日 · In normal cardiac conduction, impulses travel equally down the left and right bundles, with the septum activated from left to right and the formation of small Q waves in lateral leads. There is delayed activation of the right ventricle as depolarisation originates from the left ventricle across the septum.

2024年10月8日 · The delay between activation of the RV and LV produces the characteristic “M-shaped” R wave seen in lateral leads. The R wave in the lateral leads may be either “M-shaped”, notched, monophasic, or an RS complex. The QRS complex in V1 may be either: What about the ST elevation? Any concordant ST segment change is concerning for ischaemia.

A clinical review of right bundle branch block (RBBB) with emphasis on ECG (EKG) criteria, symptoms, causes, management and interpretation of ischemia / infarction.

2025年3月17日 · Waves are the different upward or downward deflections represented on the EKG tracing. They are the product of the action potentials created during the cardiac stimulation, and repeated from one heart beat to another, barring alterations.

M-mode is useful for quantifying the mobility of structures and measuring dimensions. In order to obtain representative measurements, it is pivotal to align the M-mode line such that it does not overestimate distances; e.g measuring the thickness of the left ventricular walls requires the line to be placed perpendicular to the long axis of the ...

2025年3月17日 · It is characterized by a wide and notched P wave shaped like the letter “m”, This P wave is often called P mitrale. Lead V1 shows a deep terminal negative component. Biatrial Enlargement: It shows signs of both left and right atrial enlargement. Wide (>2.5 mm) and enlarged P wave.

What is ECG Wave-Maven? Proficiency in electrocardiogram (ECG) interpretation is an essential skill for medical students, housestaff, and clinicians. However, medical school and postgraduate resources to develop and upgrade the necessary high level of "ECG literacy" are severely limited.

2020年12月5日 · V1 – creates an ‘M’ shaped QRS – because the R wave is positive, S is negative (and R1 is also positive). This is also known as an ‘RSR’ pattern – there is an up (‘R’) then a down (‘S’), then another up (‘R’)

2021年1月28日 · Standard MBBB ECG showing: Broad QRS complexes with an RBBB pattern (rsR pattern) in the precordial leads V1 to V3 LBBB pattern with near-absence of S waves in lead I in the limb leads. Left axis deviation and QS complexes in …

2022年7月23日 · An overview of left and right bundle branch block (BBB) including pathophysiology and how to identify BBC on an ECG using WiLliaM and MarRoW.