Cardiology SPECT vs. PET In SPECT (Single Photon Emission Computed Tomography), radiotracers emit gamma photons directly. These gamma rays are detected by gamma cameras to…

…of the electrical activity of the heart and it is created by analyzing several electrodes. In other words, each ECG lead is computed by analyzing…

…at low and high heart rate, the behavior of the pacemaker in the presence and absence of intrinsic cardiac activity, Modern pacemakers are packed with…

…His Purkinje fibers), abnormal automaticity (in contractile myocardium), re entry (anywhere) or triggered activity (anywhere) may all cause ventricular arrhythmias. Indeed, any cell type in…

Cardiology Clinical medicine Definition and Clinical Rationale Physical activity comprises bodily movement that increases energy expenditure, including walking, household tasks, active commuting and recreational activities…

…ECG Ventricular fibrillation, pulseless electrical activity (PEA) and sudden cardiac arrest This chapter will focus on ventricular fibrillation and pulseless electrical activity (PEA). These are…

Arrhythmias and arrhythmology Pharmacology & dosing Definition and Pathophysiology Sotalol is a nonselective beta adrenoceptor blocker devoid of intrinsic sympathomimetic activity that also prolongs cardiac repolarization…

…minutes is the practical threshold for treatment, known as t1. After about 30 minutes of continuous convulsive activity, t2, the risk of permanent neuronal injury…

…crisis. Mechanism of action Phentolamine is a non selective alpha adrenergic blocker. Phentolamine reduces blood pressure while increasing catecholamine activity. Effects Primarily causes afterload reduction…

…organized, continuous atrial electrical activity. This activity most commonly presents as a characteristic saw tooth pattern at rates typically exceeding 200 beats per minute. While…