…after ST elevation myocardial infarction (STEMI). The principal lesions are: Ventricular septal rupture (VSR), producing an acute left to right shunt. Ventricular free wall rupture…

…abnormalities such as prior infarction, left bundle branch block, Wolff–Parkinson–White patterns or ventricular pacing STEMI and non ST segment elevation myocardial infarction (NSTEMI)…

…presence of troponin elevation, ACS are classified into unstable angina (UA), non ST segment elevation myocardial infarction (NSTEMI), and ST segment elevation myocardial infarction (STEMI…

…ACS . Virtually all cases of STE ACS lead to myocardial infarction (elevated troponin levels), whereafter the condition is classified as ST Elevation Myocardial Infarction (STEMI) …

…classification of acute coronary syndromes. Subsequent chapters will deal with ST segment elevation myocardial infarction (STEMI) and non ST segment elevation myocardial infarction (Non STEMI…

…myocardial infarction (STEMI), non ST elevation ACS (NSTE ACS), or ACS complicated by cardiogenic shock. In NSTE ACS, a strategy involving coronary angiography and subsequent…

…management of patients with Non ST Elevation Myocardial Infarction (NSTEMI) and unstable angina (UA), which are collectively referred to as NSTE ACS (Non ST Elevation…

…Mechanical complications of myocardial infarction Recurrent dynamic ECG changes suggestive of ischaemia, especially intermittent ST segment elevation Patients may initially stabilize and subsequently develop recurrent…

…when typical ischaemic symptoms occur without persistent ST segment elevation, accompanied by a rise and subsequent fall in cardiac specific troponin attributable to myocardial ischaemia…

…Relapse of VF and new shock. ECG 12 . Sinus rhythm. ECG 13 . Recurring VT. ECG 14 . Sinus rhythm, with ST segment elevations not seen previously…

…Relapse of VF and new shock. ECG 12 . Sinus rhythm. ECG 13 . Ventricular tachycardia. ECG 14 . Sinus rhythm, with ST segment elevations not seen previously…

…leads. Localization of myocardial infarction / ischemia is done by using ECG changes to determine the affected area and subsequently the occluded coronary artery (culprit). Figure…

…and subsequently the entire ventricular myocardium normally. This may yield a ventricular rhythm with narrow QRS complexes. However, this is very uncommon and of little…

…cell will die. Death of myocardial cells is referred to as myocardial infarction. Myocardial ischemia in clinical practice: coronary artery disease In clinical practice, myocardial…

CPR This chapter will introduce the most common and essential terms used in resuscitation science, providing a foundation for understanding subsequent chapters. SCA (Sudden Cardiac…

…and third degree AV blocks. Readers already familiar with the basics of AV blocks can proceed directly to the subsequent chapters, which provide detailed discussions…

…subsequent sinus beat typically exhibits a longer QT interval, and the T wave is interrupted by a PVC, which serves as the first beat of…

…of infarction, contractile recovery can occur rapidly after reperfusion, with recovery generally occurring within one week. By contrast, chronic hypoperfusion may result in hibernating myocardium…

…risk of preeclampsia with severe features during the subsequent two weeks. Cerebral circulatory autoregulation is also disturbed. This helps explain the neurological manifestations of preeclampsia…

…1]. Although TdP and subsequent sudden death are rare, the arrhythmia is precipitated by an extensive list of "torsadegenic" or "QT liability" drugs. This includes…

…annulus velocity correlates well with ejection fraction, stroke volume and is thus a measure of systolic function. Strain and strain rate Myocardium deforms during systole…

…acidosis, and the subsequent development of hyperkalemia. This condition is potentially fatal and necessitates prompt intervention, including sedation and the administration of Dantrolene. References DeBehnke…

…incident HFrEF. Historically dominated by acute myocardial infarction (MI) survivors, the contemporary risk factor profile is increasingly driven by the global epidemics of obesity, diabetes…

…manifestations of conduction defects are prolonged QRS complexes and altered QRS appearance. These concepts will be discussed in detail in this and the subsequent articles…

…in subsequent chapters. The first part consists of a brief rehearsal of the basics of cardiac automaticity, action potentials, and pacemaker cells. Principles of myocardial…

…are clusters of atrial myocardial cells located around the crista terminalis , the entrance of the coronary sinus and the inferior vena cava, as well as…

…which results in increased oxygen demand and dilatation of the right ventricle. Despite the dilation, myocardial ischemia will develop if right ventricular oxygen demand exceeds…

…All subsequent actions require trained professionals (e.g endotracheal intubation, mechanical chest compressions, targeted temperature management, etc.) and are much less effective in terms of…

Procedurer The test measures the ability of the adrenal cortex to respond to maximal ACTH stimulation, and it is rarely the injection itself that determines…

…5 mg/min for the remaining 18 hours and subsequent days as necessary. Supplemental infusions of 150 mg over 10 minutes can be utilized for…

…conditions confer risk independently of conventional factors, and whether they improve risk classification, remains incompletely established. Data concerning premature menopause and subsequent hypertension or diabetes…

…myocardial infarction remains consequential, and historically 2–6% of patients discharged with presumed non ischaemic chest pain were subsequently found to have had an infarction…

Myocardial ischemia and infarction Definition and Pathophysiology Intravascular imaging comprises catheter based techniques that directly visualize the coronary lumen, vessel wall, plaque, thrombus, and implanted…

…because cardiac troponin elevation after revascularization is common and may reflect procedural myocardial injury rather than a clinically significant infarction. Mechanisms of injury Procedural injury…

…large contribution to cardiovascular disease. Hypertension is a major component of this burden, followed by non HDL cholesterol. For myocardial infarction, the leading contributors include…

…the action potential to contractile cells. The subsequent spread of the action potential occur from one contractile cell to another, starting in the endocardium and…

…prolonged and then shortened. The initial prolongation increases the length of the refractory period and the subsequent early impulse will therefore encounter refractory fibers. Thus…

…myocardium may be excited by external electrical stimuli that drive the cells to threshold. Stimulation threshold is the minimum amount of energy required to reach…

…and thus generate an action potential that will spread through the myocardium. Components of an artificial pacemaker Pacemakers consist of an implantable pulse generator (IPG…

…development of increased left ventricular hypertrophy and mass. Initially, myocardial abnormalities may be subclinical. Progressive dilation can subsequently impair left ventricular ejection fraction. Enlargement of…

…5] . Unlike HFrEF, where epicardial ischemic heart disease and myocardial infarction are primary drivers, HFpEF is more frequently associated with coronary microvascular dysfunction, though epicardial…

…next sinus impulse. The premature impulse may depolarize the atria and subsequently, the ventricles, provided that the myocardium and conduction system have repolarized. This appears…

…of the pulmonary valve and, subsequently, narrowing of the valvular orifice. Carcinoid heart disease may also lead to endocardial fibrosis. Rheumatic heart disease Sinus of…

…leads. Localization of myocardial infarction / ischemia is done by using ECG changes to determine the affected area and subsequently the occluded coronary artery (culprit). Figure…

…pressure, which subsequently causes right atrial dilation. Vena cava inferior may also dilate secondarily. Principles of management Medical therapies do not alter disease progression. Diuretics…

…was developed using a single center longitudinal cohort and subsequently validated with an independent cohort of 1,689 patients from the International LQTS Registry in…

…was developed using a single center longitudinal cohort and subsequently validated with an independent cohort of 1,689 patients from the International LQTS Registry in…

…pulse deficits, or visceral ischaemia. Approximately 25% of PAUs are discovered incidentally on imaging, although an incidental lesion may subsequently become symptomatic or progress. The

…other capable of conducting the impulse, re entry may arise. This is illustrated in Figure 1 (study this figure carefully). The impulse will only be…

…depolarization spreads from the sinoatrial node to the atrial and ventricular myocardium. Propagation of the action potential is possible because all cardiac cells are electrically…

…These individuals exhibit pronounced hypertrophy, resulting in a reduction of ventricular volume and subsequently an increase in ejection fraction. Stroke volumes are generally reduced in…

…means that the machine emits ultrasound waves with a certain frequency and subsequently records reflected sound waves at double the frequency of the emitted waves…

…subsequently lower blood pressure and reduced organ perfusion. Left ventricular dilation occurs with ensuing decline inleft ventricular ejection fraction (LVEF). This is accompanied by myocardial…

…rupture, resulting in myocardial infarction. Initial rhythm in traumatic cardiac arrest The initial rhythm in traumatic cardiac arrests comprises PEA in 60% of instances, asystole…