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Nasogastric tube

…stricture or a known diverticulum Relative Recent nasal or pharyngeal surgery Signs that should raise the suspicion of a base of skull fracture: periorbital bruising…

Tricuspid regurgitation (TR/TI)

…septal and posterior leaflets of the tricuspid valve adhere to the ventricular myocardium (failure of embryological delamination). The tricuspid valve annulus is displaced apically 0…

The electrical axis of the heart (ECG axis)

…causes of left axis deviation have been excluded. Causes of extreme axis deviation Extreme axis deviation is rare. It is most likely due to misplaced…

The electrical axis of the heart (heart axis): ECG & physiology

…misplaced limb electrodes. If the rhythm is tachycardia with wide QRS complexes, then ventricular tachycardia is the most likely cause. This article is part of…

Posterior acute myocardial infarction (STEMI)

…the left in the thorax. This positions the basal portion of the left lateral wall posteriorly in thorax (Figure 1). This area is most frequently…

Posterior Myocardial Infarction: Diagnosis on the Standard ECG

…have improved by the time of medical evaluation, because transient or evolving ischaemia may still require urgent reperfusion assessment. Posterior myocardial infarction may be electrically…

Fascicular block (hemiblock): Left anterior & left posterior fascicular block

…causes left posterior fascicular block (LPFB) . In a fascicular block, the myocardium without fascicular supply will depend on impulses spreading from other parts of the…

Mitral valve stenosis

…and P3 (posterior or lateral scallop). Figure 1. Anatomy of the mitral valve The leaflets are connected to the papillary muscles via chordae tendineae (Figure…

Acute vertigo: quick reference for HINTS and differential diagnosis

…but posterior circulation stroke is the most important dangerous differential diagnosis. Clear focal neurological findings are absent in roughly half of patients with a central…

Bone marrow aspiration and biopsy

…Choice of site The posterior superior iliac spine is the standard site for both aspiration and biopsy in adults. Here the posterior part of the…

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