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Ventricular tachycardia (VT): ECG criteria, causes, classification, treatment

…accompanied by already impaired ventricular function, does not allow for adequate filling of the ventricles, which results in reduced stroke volume and reduced cardiac output…

Delirium in older adults: quick reference

…patient to recite the months of the year backwards. A normal result does not exclude delirium, however, and an abnormal result is not specific to…

Pulmonary Hypertension: Classification and Treatment Principles

…studies of pulmonary arterial hypertension (PAH). The threshold is not absolute: patient phenotype, risk factors for heart failure with preserved ejection fraction, echocardiographic findings, and…

Interpretation of Pacemaker ECG

…to the QRS morphology during LBBB. Stimulation in other regions of the ventricle may result in a different QRS morphology. If the lead tip is…

Assessment of the pupillary reflex in cardiac arrest

…a result, pupils often dilate widely within 30–120 seconds of cardiac arrest and light reactivity is lost when cerebral blood flow ceases. In other…

Atrial and ventricular enlargement: hypertrophy and dilatation on ECG

…ventricular hypertrophy, and to the left in left ventricular hypertrophy). ST T segment Significant hypertrophy may result in abnormal depolarization of the ventricular myocardium. This…

Sinus bradycardia: definitions, ECG, causes and management

…This is also a normal finding. Abnormal (pathological) causes of sinus bradycardia In all other situations, sinus bradycardia should be regarded as a pathological finding…

Vasospastic (Prinzmetal) Angina: Provocation Testing and Treatment

…myocardial ischaemia caused by transient abnormal vasoconstriction of one or more coronary arteries. Epicardial spasm produces a reversible functional occlusion and usually causes transmural ischaemia…

Blood gas interpretation: quick reference for acid-base disorders

…Normal Abnormal Abnormal A compensated simple disorder, or two opposing primary disorders It is therefore not enough to ask which of the pCO₂ and the…

Left Bundle Branch Block: ECG criteria and clinical implications

…leads [7]. These stricter parameters correlate more closely with abnormal LV mechanical function and the potential benefit of resynchronization pacemaker therapy [7]. R Wave Peak…

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