…waves. The transducer is held with one hand and its position and angle are adjusted to send ultrasound waves through structures to be visualized. Ultrasound…

…obtained by combining two or three electrodes. At any given instant during the cardiac cycle, all ECG leads analyze the same electrical events but from…

…instilled 15–30 minutes before the procedure, or over a few days at home for a hard plug. Have the patient lie with the ear…

…to second hand smoke. Use of cannabis, electronic cigarettes or other inhaled products. Readiness to attempt cessation. Depression, schizophrenia, schizoaffective disorder, HIV infection or other…

…despite medical treatment. Diagnostic drainage in suspected purulent pericarditis, tuberculosis or malignancy. Tamponade is a clinical diagnosis supported by echocardiography: Finding Comment : : Hypotension, distended neck…

…yields a positive P wave in lead II ( Figure 2 , right hand side). The P wave is always positive in lead II during sinus rhythm…

…but it may also be referred to as the posterior wall, or the inferobasal wall. Transmural ischemia located in this area yields an injury current…

…and overall mortality. Ventricular dimensions are measured using an electronic caliper, with the tips positioned at the interface between the compacted myocardium and the noncompacted…

…study, PET, SPECT, genetic profiling — add information but are too costly or invasive to screen a population. The surface ECG is the obvious cheap, standardized…

…had no myocardial disease or acute coronary syndrome. Indeed, the majority of the victims were healthy and tragically killed by a sudden and random electrical…