…ischemia and infarction Definition and Clinical Significance In stent restenosis (ISR) is recurrent narrowing within a previously implanted coronary stent. It represents a form of…

…specific segments of the left ventricle that demonstrate abnormalities. These tools compare perfusion data to population based reference databases, often adjusted for sex and age…

…rather than the amount of cholesterol carried within them. Most apoB containing particles are LDL particles, with smaller contributions from VLDL, IDL, and Lp(a)…

…of LVEF, and echocardiographic measurement is subject to meaningful variability. HFmrEF may therefore represent several clinically distinct trajectories: A patient whose LVEF has improved from…

…motion abnormalities in a patient with chest pain strongly suggests myocardial ischemia as the underlying cause of the symptoms. The degree and extent of wall…

…wave U wave QT (QTc) interval Pediatric and neonatal electrocardiograms differ markedly – in terms of rhythm, morphology, normal findings, normal variants, etc – from adult electrocardiograms…

…10–15 minutes of ischaemia. Mitochondrial abnormalities can occur even earlier after coronary occlusion and progress over time. Experimentally, necrosis advances from the subendocardium towards…

…of myocardial necrosis, or severe ischaemia on stress testing. Such developments may convert an initially selective or delayed approach into an indication for angiography and…

…value for fractional shortening (FS) Normal FS, M mode 25% Normal FS, 2D measurement 18% Advantages of fractional shortening If ventricular geometry is normal and…

…syndrome is therefore both a clinical risk factor cluster and a marker of broader metabolic dysfunction. Associated abnormalities may include increased apoB and apoC III…

…Definition and pathophysiology Chronic kidney disease (CKD) is defined by abnormalities of renal structure or function that persist for more than 3 months and have…

…sequence of events during myocardial ischemia, beginning with perfusion abnormalities and ultimately leading to chest pain (angina). Myocardial perfusion imaging techniques, such as SPECT and…

…reduces the risk of missing abnormalities. The eight steps below go through the rhythm and then the waveforms one by one, and conclude with comparison…

…coronary artery. Anomalous origin of a coronary artery from the pulmonary artery can result in reduced coronary oxygen content, coronary steal, and myocardial ischaemia. Coronary…

…Assessment should integrate the history, physical examination, laboratory data and diagnostic testing. Examination for congestion Useful bedside indicators of persistent or improving congestion include: J

…This helps explain the neurological manifestations of preeclampsia and the potential for stroke even at blood pressure levels that might otherwise be considered only moderately…

…clinical presentations arising from structural or functional abnormalities of the coronary arteries or coronary microcirculation. These abnormalities can produce a transient and reversible mismatch between…

…from epicardial vasomotor abnormalities or structural and functional microvascular disease. Thus, the presence of non obstructive epicardial arteries does not exclude a coronary cause of…

…widened QRS complex and secondary ST T wave abnormalities [7]. Diagnostic Criteria The diagnostic requirements for LBBB vary by the stringency of the criteria applied…

…be interpreted in conjunction with the clinical presentation and previous tracings when available. A prior ECG can help distinguish new abnormalities from chronic baseline findings…

…or coronary anatomy unsuitable for further intervention. In ANOCA/INOCA, coronary atherosclerosis, endothelial dysfunction, and distinct coronary functional abnormalities may produce ischaemia without an obstructive…

…established clinical CVD. It differs from primordial prevention, which seeks to prevent the development of cardiovascular risk factors themselves, and from secondary prevention, which addresses…

…accounting for over 50% of all incident heart failure cases globally [5] . Registry data, including the Get With The Guidelines Heart Failure (GWTG HF) and…

…prognosis and therapeutic decision making. Structural Heart Disease (SHD): Accounting for approximately 90% of all VT presentations, SHD provides the macroscopic architectural abnormalities necessary for…

…progressive syndrome characterized by systemic congestion resulting from impaired RV filling and/or reduced RV output. Recognition of this syndrome is critical because it may…

…of missing important abnormalities and also speeds up the ECG interpretation. Press the Download button to download the pocket guide. Download Become a member and…

…great paper written by a dozen of merited scholars. In this paper the authors discuss normal variants and abnormalities which athletes may exhibit on the…

…Evaluation of Treatment and Alternatives for Drug Failure The provided context does not contain specific information regarding the formal criteria for evaluating the success of…

…may coexist, and certain disease entities can span both categories; for example, acute heart failure may occur in the context of acute myocardial ischaemia, though…

…abnormal vasoconstriction of one or more coronary arteries. Epicardial spasm produces a reversible functional occlusion and usually causes transmural ischaemia. The resulting abnormalities in left…

…to determine whether the transient loss of consciousness was due to syncope, identify the cause, and assess the risk for future episodes and serious harm…

…account for approximately half of patients with symptomatic HF. The distinction is clinically useful but not absolute. Ejection fraction is a continuous variable and echocardiographic…

…bridging; myocardial metabolic abnormalities; and abnormal pain perception in patients without demonstrable ischaemia. The absence of obstructive disease therefore does not establish a benign diagnosis…

…the myocardium to a specific form of polymorphic ventricular tachycardia (VT) known as torsades de pointes (TdP). Drug induced LQTS and TdP represent a multifactorial…

…primarily for instability. Evaluation and physical examination Initial assessment should establish whether AF is associated with acute haemodynamic compromise, pulmonary oedema, or evidence of coronary…

…hypertension accounts for more than 90% of prevalent hypertension. Hypertension has a major population attributable contribution to chronic coronary disease, cerebrovascular disease, and peripheral arterial…

…structural and functional ventricular abnormalities and progressive neurohormonal activation. The therapeutic rationale for disease modifying treatment is to reduce mortality, prevent recurrent hospitalization for worsening…

…Complex or multifactorial genetic architecture. The inheritance pattern affects the appropriate scope and duration of family surveillance. For example, heterozygous carriers in a clearly recessive…

…Coarctation of the aorta and renovascular disease are important non endocrine causes, particularly in patients with resistant hypertension. Dietary sodium and potassium abnormalities and commonly…

…pathogenetically from atherosclerotic type 1 MI. It is an infrequent cause of ACS overall but represents a substantial proportion of ACS presentations in young and…

…The pre test likelihood of obstructive CAD is moderate or high, generally greater than 15% and less than 85% Baseline ECG abnormalities make exercise ECG…

…diagnostic markers for structural and hemodynamic cardiac abnormalities. Right Axis Deviation (RAD) RAD holds significant diagnostic weight in the evaluation of pulmonary vascular and right…

…the broader spectrum of acute coronary syndromes, which may present with recent changes in symptoms or signs, with or without ECG abnormalities and with or…

…important abnormalities and also speeds up the interpretation. Note that this chapter is preceded by a comprehensive discussion in the chapter Characteristics and Definitions of…

…the effects of exercise. However, dobutamine is rarely used in current practice due to its less favorable safety profile and the preference for vasodilators like…

…T wave abnormalities are common and occur in a wide range of conditions. Unfortunately, many clinicians tend to misinterpret the T wave and some find…

…and optical coherence tomography (OCT) can reveal lesions that are not apparent on conventional angiography. Coronary vasomotor disorders may involve epicardial spasm or abnormalities of…

…in the context of the clinical presentation and other findings. A reduced CFR may occur with angiographically insignificant epicardial disease because of abnormalities in the…

…Abnormalities in the QT interval can cause serious arrhythmias and sudden cardiac death. QT prolongation can precipitate torsades de pointes, a specific form of polymorphic…

…myocardial abnormalities may be subclinical. Progressive dilation can subsequently impair left ventricular ejection fraction. Enlargement of the left ventricle predisposes to atrial and ventricular arrhythmias…

…Malignant hypertension represents an extreme form in which acute microvascular injury occurs, classically involving fibrinoid necrosis of small arteries in the kidneys, retina, and brain…

…or subxiphoid pain may be mistaken for indigestion. Associated manifestations include: Sweating Nausea and vomiting Anxiety A sense of impending doom When STEMI begins during…

…structural cardiac abnormalities, HF and sudden cardiac death. The relationship between glycaemia and cardiovascular disease is complex. Glycaemic control is important for prevention of microvascular…

…prevalence of ARVC is between 0.02 and 0.05% in Europe (Corrado et al). ARVC is more malignant in men, the reason for which…

…of ejection fraction, and 3D measurements will presumably replace 2D measurements in the future. Cardiac MRI (magnetic resonance imaging) is considered the gold standard for…

…and thus be confused with previous myocardial infarction). ECG examples of pre excitation (short PR interval, prolonged QRS duration, delta waves, secondary ST T abnormalities…

…<1 mm and it resolves rapidly once the exercise is stopped. Some experts believe that these ST segment depressions represent a benign form of subendocardial…

…possibilities to diagnose abnormalities. Importantly, the vast majority of recommended ECG criteria (e.g. criteria for acute myocardial infarction) have been derived and validated using…

…changes. Two relatives died from sudden cardiac death. Atrial fibrillation and ventricular arrhythmias were observed in the fifth decade of life in several family members…

…account for approximately 5% of presentations in some populations. Despite this relatively low prevalence, missed myocardial infarction remains consequential, and historically 2–6% of patients…