…commonest source of error is confusing them. CPAP delivers a constant pressure that recruits alveoli and unloads the heart, whereas bilevel NIV delivers pressure support…

…waves are not related to QRS. PP interval is constant, but independent of RR interval, which is also constant. Atria and ventricles are depolarized separately…

Echocardiography Principles of flows and volumes in the heart If the flow in a cylinder is constant, then flow (Q) is the product of the…

…ventricular rate slower than 50 beats per minute. P waves with constant morphology preceding every QRS complex. P wave is positive in limb lead II…

…P wave precedes every QRS complex; the PR interval is constant and the P wave is positive in lead II. Causes of bradyarrhythmia: sinus bradycardia…

…minutes Duration of action 2 to 4 hours Delivery IV Dose Can be given as repeated intravenous bolus injections or as a constant dose infusion…

…P wave precedes every QRS complex; (3) the P wave is positive in lead II and (4) the PR interval is constant. Causes of bradycardia :…

…current (I), voltage (V) and resistance (R) is described by Ohm's law: V = I • R Pacemakers generate a constant voltage (V). The current…

…P wave precedes every QRS complex; (3) the P wave is positive in lead II and (4) the PR interval is constant. Causes of bradycardia :…

…of left ventricular mass. mass LV = 1.05 (mass total – mass cavity ) LV = left ventricle; 1.05 = mycoardial mass constant. Left ventricular…