…often not true in other circumstances (e.g. pulmonary embolism, trauma, respiratory causes, drug overdoses, etc.). Among victims in whom the cardiac arrest was caused…

…On the other hand, sinus bradycardia developing during physical exercise is considered abnormal, because heart rate must increase during exercise. Mechanisms of cardiac arrhythmias The…

Arrhythmias and arrhythmology Cardiology Definition and pathophysiology Cardiac implantable electronic devices (CIEDs) include permanent pacemakers, implantable cardioverter defibrillators (ICDs), and cardiac resynchronization therapy (CRT) devices…

…complex or T wave can be seen. This is pathognomonic (unique) to ventricular fibrillation and must not be confused with any other arrhythmia. Figure 1…

…and location. Tumors can reduce cardiac output by causing obstruction or valve dysfunction. Tumors that grow invasively in the myocardium can cause arrhythmias, which in…

…ventricular fibrillation (VF). Clinical presentation Confusion Abdominal pain Hypotension Arrhythmias and ECG changes Cardiac arrest Treatment Furosemide 1 mg/kg IV. Hydrocortisone 300 mg IV…

…93%) for myocardial infarction. Moreover, fragmented QRS is associated with an increased risk of sudden cardiac death and ventricular arrhythmias. Figure 2. Fragmented QRS complex…

…cessation of tissue perfusion as a result of cardiac or vascular condition. May reverse spontaneously (e.g., vasovagal syncope) or with treatment (e.g., arrhythmias)…

…ischemia result in cardiac arrest. In order for an infarction or ischemic episode to result in ventricular arrhythmia, it must coincide with other pro arrhythmogenic…

…sudden cardiac arrest. The constraint does not lie in therapy: implantable cardioverter defibrillators (ICDs) are highly effective, terminating well over 99% of the ventricular arrhythmias…