…clinical patterns of AF—paroxysmal, persistent, long standing persistent and permanent—and is not determined solely by the apparent frequency or duration of documented episodes…

…symptoms such as dyspnoea and fatigue, as well as a greater prevalence of MVA. Symptoms may be persistent or episodic and may not follow a…

…Wernicke's encephalopathy, other central disease Neurological examination, gait and truncal stability, often MRI Episodic triggered vestibular syndrome Brief attacks, usually lasting seconds, reproducibly triggered…

…Angiography also provides limited information about plaque composition, vulnerability and the risk of future plaque rupture. Anatomical severity versus functional significance The physiological effect of…

…calcification and remodelling; episodic plaque disruption followed by thrombosis. Atherosclerotic disease usually evolves over decades. Intimal thickening may be present during the second and third…

…autonomic dysregulation within a structurally normal heart. During an episode, decreased cardiac output and a potential paradoxical vasodilation with hypotension occur, often accompanied by bradycardia…

…early afterdepolarisations (EADs) that generate premature ventricular contractions (PVCs) and increases transmural dispersion of repolarisation, thereby facilitating reentry. Episodes of TdP are frequently pause dependent…

…hypoactivity, hallucinations and marked autonomic hyperactivity Up to 5 to 7 days, sometimes longer Persisting withdrawal, particularly after previous severe episodes, with concurrent physical illness…

…repeated ischemic episodes or chronic reductions in perfusion. The amount and distribution of both viable and nonviable myocardium, together with coronary anatomy and the feasibility…

…infarction (AMI), in which myocardial ischaemia is accompanied by cardiomyocyte necrosis and cardiac troponin release meeting the criteria of the universal definition of MI. Clinically…

…by the fact that T wave inversions do occur after an ischemic episode, and these T wave inversions are referred to as post ischemic T…

…patients who develop serious arrhythmias during spontaneous episodes represent a higher risk subgroup. Evaluation and physical examination The cardiac examination is usually normal when the…

[calc_qtc] 1 – 15 years, male and female Adult, male Adult, female Normal <440 ms <430 ms <450 ms Upper limit 440–460 ms 430…

…or severe episodes, longer episodes, a lower threshold for provocation, or symptoms that awaken the patient from sleep. Initial symptoms of NSTEMI and UA may…

…approximately 1–2% without reperfusion to about 0.2% in the reperfusion era. Clinical presentation and symptoms A new episode of hypotension, recurrent chest pain…

…and miscellaneous conditions A novel potentially life threatening cardiac arrhythmia syndrome identified with ECG The ECG may be used to diagnose several cardiac genetic disorders…

…oedema, or evidence of coronary ischaemia. These findings determine the urgency and type of intervention. The assessment should also clarify: Whether AF is pre existing…

…to establish a temporal correlation between symptoms and episodes of bradyarrhythmia on ECG recordings. Normal heart rate and normal variants Normal resting heart rate is…

…minutes; shorter episodes also contribute to health. Spreading activity across the week may reduce musculoskeletal injury risk. Examples include brisk walking, jogging, swimming and cycling…

…will alleviate the ischemia, improve myocardial function and increase resistance to episodes of more severe myocardial ischemia. Collateral circulation may be very effective in reducing…

Info Antiarrhythmic drugs and management of ventricular tachycardia, ventricular fibrillation This manual presents recommendations for the management of ventricular tachyarrhythmias (VT, VF). It is primarily…

…thyroid disease, iron deficiency and anaemia, kidney dysfunction, sleep disordered breathing, cancer related disease and cardiac amyloidosis among the relevant clinical settings or comorbidities. HFrEF…

Cardiology Antiarrhythmic drugs and management of ventricular tachycardia, ventricular fibrillation This manual presents recommendations for the management of ventricular tachyarrhythmias (VT, VF). It is primarily…

…that a traditional 12 lead ECG only presents a few seconds of myocardial electrical activity and there is a chance that ischemic episodes are missed…

…after an episode of ischemia/infarction, but no later than 24 hours. However, T wave inversions following reperfusion develop within 4 hours and such T…

…blunt force, lacerations, gunshot wounds) Asthmatic episodes Iatrogenic events (e.g., during central venous catheter insertion) Underlying lung pathologies In cases of benign pneumothorax, positive…

…ECG) become apparent. In contrast, modalities like echocardiography and ECG typically identify ischemia at later stages, when functional or electrical alterations are evident. Subjective symptoms…

…a hospital episode in international studies and is linked to substantial mortality, even though incidence and prognosis vary widely between patient groups and care settings…

…AV node, bundle of His or the bundle branches. Tachycardia can cause AV blocks during or after the tachycardia episode. Under certain circumstances, bradycardia can…

…all ischemic episodes are asymptomatic (refer to The Ischemic Cascade). Acute coronary syndromes occur when atherosclerotic plaques rupture or erode, leading to atherothrombosis and occlusion…

…left ventricular dysfunction among patients with atrial fibrillation and other supraventricular tachyarrhythmias. Moreover, ventricular tachyarrhythmias (including recurrent episodes of ventricular tachycardia) can also cause this…

…infarctions and episodes of myocardial ischemia, do not cause ventricular arrhythmias and cardiac arrest. It is clear that only a negligible fraction of all episodes…

…junctional tachycardia. These tachyarrhythmias arise in the atria and are very rarely life threatening. Causes of tachyarrhythmia with wide QRS complexes (QRS duration ≥ 0.12…

…takes into account the following variables: Maximum Left Ventricular Wall Thickness (MaxLVWT) : Hypertrophy is a hallmark of HCM and is associated with increased arrhythmic risk…

…erythropoietin, tyrosine kinase inhibitors and drugs directed against vascular endothelial growth factor. Episodes of headache, palpitations, sweating and pallor that may suggest phaeochromocytoma. Systemic sclerosis…