14 träffar

ArticleProcedurer
Oesophageal ECG

…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…

ArticleECG
Assessment of Pacemaker Malfunction

…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…

ArticleProcedurer
Nasogastric tube

…to return of bowel function without reducing the risk of complications. Contraindications Type Condition : : Absolute Suspected base of skull fracture or a marked midfacial fracture …

ArticleEchocardiography
Tricuspid regurgitation (TR/TI)

…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…

ArticleEchocardiography
Continuous Wave Doppler (CW Doppler)

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

ArticleEchocardiography
Aortic stenosis

…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…

ArticleEchocardiography
Two-dimensional (2D) echocardiography

…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…