…The oesophageal signal is thereby displayed in the V5 channel on the printout. 3. Set the filter: a frequency range of about 15–40 Hz…

…misplaced stimulation artifacts, irregular pacing, etc. Most cases of malfunction are associated with the electronics in the pulse generator or dislodgement or fracture of the…

…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…

…may be displaced upwards (ST segment elevation) or downwards (ST segment depression). The term ST segment deviation refers to elevation and depression of the ST…

…ventricular myocardium (failure of embryological delamination). The tricuspid valve annulus is displaced apically 0.8 mm/m 2 BSA. Basal segments of the right ventricle…

…whole shoulder; rolling up a sleeve creates a constriction that distorts the anatomy and tempts the operator to inject too high. 2. Palpate the acromion…

…the uterus should be manually displaced to the woman's left side (Figure 1). Additional offloading of the vena cava can be accomplished using a…

…the opening of the mitral valve and the left atrium. Recall that velocities (flows) directed away from the transducer are displayed below the baseline and…

…are displayed in two groups of three: leads I, II and III and leads aVR, aVL and aVF. Figure 1 shows the traditional presentation of…

…a biologically active process. Risk factors for calcification overlap with risk factors for coronary heart disease (atherosclerosis). The average age at diagnosis of aortic stenosis…

…resolution movie. The rate of update is described by the technical term frame rate , which is the number of images ( frames ) displayed per second. High…

…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…

…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…

ECG Myocardial ischemia and infarction Pathological Q waves are evidence of myocardial infarction Myocardial infarction – particularly if extensive in size – typically manifests with pathological Q…