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

…Left to right shunt. Right ventricular dysfunction due to pressure/volume overload is the most common cause. Ebstein's anomaly The prevalence of Ebstein's…

…poorer absorption. Injection into an arm with a dialysis fistula. Preparation and equipment Hand disinfection; gloves where there is a risk of blood contact. An…

…the fundal height surpasses the umbilicus, the uterus should be manually displaced to the woman's left side (Figure 1). Additional offloading of the vena…

…velocities towards the transducer are displayed above the baseline. This image shows a fast and distinct flow (almost 5 m/s) directed away from the…

…the chest leads (V1 through V6) are displayed on the ECG paper in their anatomically contiguous order from right anterior (V1) to left lateral (V6)…

Procedurer The oesophagus runs directly behind the left atrium. An electrode placed in the oesophagus at the right level therefore records atrial depolarisation with an…

…As the area is reduced, transvalvular flow resistance increases. This results in increased left ventricular load, while simultaneously affecting systemic perfusion. Aortic stenosis is a…

…is described by the technical term frame rate , which is the number of images ( frames ) displayed per second. High frame rate (i.e many frames…

…the tube is safe. A misplaced tube in the airway produces no reliable symptoms in a patient with an impaired cough reflex, and the first…

…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…

…contraction. The direction of the depolarization (and thus the electrical axis) is generally alongside the heart's longitudinal axis (to the left and downwards). Figure…

…12 s, provided that other causes of left axis deviation have been excluded. Causes of extreme axis deviation Rare. Most likely due to misplaced limb…

…explained in this article). An isolated QS complex is allowed in lead V1 (due to missing r wave or misplaced electrode). Lead III occasionally displays…