…precipitating state resolves. The distinction is therefore not based on the BP value alone: Feature Hypertensive emergency Hypertensive urgency BP Often ≥180/110 mmHg; no…

…patients whose initial findings are less definitive. The defining electrocardiographic feature is the absence of persistent ST segment elevation. This does not imply low risk…

…and generalizability. Deep learning offers a way around this: an ECG can be fed directly into a classifier with no human feature extraction, in principle…

Echocardiography Myocardial ischemia and infarction Definition and Pathophysiology Stress echocardiography is a functional cardiac imaging technique used primarily to identify inducible myocardial ischaemia and to…

…Imaging (coronary CT angiography, myocardial perfusion scintigraphy, stress echocardiography) has greater diagnostic accuracy. Contraindications Absolute: Acute coronary syndrome within 48 hours, or ongoing unstable angina…

…energy consumption at rest (sitting). METs may be used to describe the functional capacity during exercise stress testing. Results of treadmill tests are typically described…

…Patients with previous acute coronary syndromes (ACS) Exercise stress testing is routinely performed after acute myocardial infarction in order to assess the presence of myocardial…

…detail. Symptom during exercise stress testing Perceived exertion The patient's perceived exertion is a way of estimating the intensity of the physical activity. It…

…during exercise testing (exercise ECG). Indications for exercise stress test Indications have been discussed in Introduction to Exercise ECG. The most common indications are as…

…Thus, the clinical utility of exercise stress testing is immense and the procedure may be used in numerous situations, ranging from health screening to assessment…

…often confused: replacement therapy in adrenal insufficiency (which must be increased under stress) and pharmacological anti inflammatory treatment (which must be tapered in a controlled…

…apical ballooning syndrome, stress induced cardiomyopathy) Takotsubo cardiomyopathy (broken heart syndrome) is a rather peculiar and certainly acute condition. Much research has been devoted to…

ECG Exercise stress test Definition and clinical role Exercise electrocardiographic testing is a standardized assessment in which a patient performs progressively increasing external work, usually…

ECG Exercise stress test Physiological principles of exercise stress testing, myocardial ischemia and ischemic symptoms Understanding the basic principles of exercise physiology is essential to…

Cardiology Indications for pharmacologic agents Pharmacologic stress tests are indicated in the following scenarios: Inability to exercise due to physical limitations. Contraindications to exercise, such…

…image quality and patient motion. Alignment : Ensure proper alignment of rest and stress images to accurately compare corresponding myocardial regions, as misalignment can lead to…

Endokrinologi & metabolism Lathundar An inpatient has a different insulin sensitivity from at home: less food, more stress, often corticosteroids, often impaired renal function. Prescribe basal…

…or cardiometabolic origin. Major clinical presentations The principal outpatient presentations include: Reproducible stress induced angina or ischaemia associated with obstructive epicardial coronary disease. Angina or…

…plasma concentrations of the two peptides are not interchangeable. Natriuretic peptide concentrations reflect haemodynamic stress, but their release is not specific to left ventricular systolic…

…also reduce production of apoB 100 containing lipoproteins and exert effects beyond LDL C reduction, including modulation of inflammation, oxidative stress, endothelial function, plaque stability…

…a disorder of autonomic reflexes. It typically occurs after attaining an upright posture or following painful stimuli and emotional stress. By the age of 60…

…coronary artery disease (CAD). It offers visual and numerical insights into myocardial blood flow under rest and stress conditions. MPI uses radiotracers in combination with…

…and thrombosis interact to produce focal arterial lesions. Although epicardial coronary arteries are a major site of disease, atherosclerosis is systemic and may affect multiple…

…or heaviness [7]. Classically, it is initiated by exertion or stress and is relieved by rest or nitroglycerin [4], [6]. Presentation Nuances: While typical angina…

…mitral regurgitation, ventricular dilatation, myocardial wall stress and subendocardial ischemia. Neurohormonal activation and vascular and renal abnormalities contribute to sodium and water retention. The interaction…

…CMD: resting vascular tone is generally normal, but the increase in coronary blood flow during stress is inadequate. Structural CMD: resting vascular tone is increased…

…Pathophysiological Basis Stress MPI is based on the principle that flow limiting coronary disease limits the ability of a myocardial territory to augment blood flow…

…can improve coronary flow, exercise capacity and angina related health status, and both can reduce myocardial ischaemia during exertion or emotional stress. Neither procedure, however…

…branch points, where disturbed flow, altered shear stress and intimal injury promote atherosclerosis. The principal anatomical distributions are: Abdominal aorta and iliac arteries, involved in…

…weight, smoking, diet, physical inactivity, and alcohol consumption. Additional considerations include psychosocial stress, obstructive sleep apnoea, social determinants of health, air pollution, family history, ethnicity…

…Reduction in plasma volume, preload and afterload Lower left ventricular wall stress Reduced sympathetic nervous system activity Improvement in cardiac metabolic efficiency, including increased oxygen…

…when marked hormonal changes occur. Hypertension and oestrogen exposure. Emotional or chronic mental stress. Fibromuscular dysplasia (FMD), which may produce arterial wall abnormalities and intramural…

…Echocardiography (ASE) and the European Association of Cardiovascular Imaging (EACVI) stress that the following parameters are of particular importance for the evaluation of diastolic function…

…expected maximum heart rate (age adjusted). To determine this it is necessary to perform an exercise stress test, during which it is fundamentally important that…

…For example, exercise stress testing is no longer recommended in the initial evaluation of patients with suspected coronary artery disease (i.e CCS). The new…

…Stroke Volume, Wall Stress & Frank Starling's law Myocardial Mechanics It is fundamental to distinguish hypertrophic cardiomyopathy from hypertrophy caused by increased loading conditions. The…

…Exercise stress testing is contraindicated in patients with acute myocardial infarction, unstable angina, severe aortic stenosis, decompensated heart failure, and uncontrolled arrhythmias. Pharmacologic stress agents…

…sufficient cardiac output at low heart rates. During vasovagal syncope (e.g during intense emotional stress) During vagal maneuvers (Valsalva maneuver, carotid sinus [baroreceptor] stimulation…

…are as follows: Normal (physiologic) sinus tachycardia: The automaticity (rate of spontaneous depolarization) in the sinoatrial node is increased during physical activity, stress, and nervousness…

…hyperglycemia, smoking, and turbulent hemodynamic shear stress. This dysfunction compromises the endothelial barrier, upregulating the expression of vascular cell adhesion molecule 1 (VCAM 1) and…

…updated. For example, exercise stress testing is no longer recommended in the initial evaluation of patients with suspected coronary artery disease (i.e. CCS). The…

…is sufficient to provoke overt ischemic signs during stress testing (Bourque et al.). Thus, patients who undergo exercise stress testing must achieve at least 85%…

…Dobutamine Cardiogenic shock. Bradycardia (second line treatment). Stress testing (it increases myocardial oxygen consumption). Usual: 2.0–20 μg/kg/min. Maximum: 40 μ…

…Started within 48 h where possible Thromboprophylaxis Low molecular weight heparin unless contraindicated Head of the bed 30–45° Stress ulcer prophylaxis During mechanical ventilation…

…2. Insert a venous cannula. Wait a few minutes — the venepuncture itself can cause a stress related rise in cortisol. 3. Take the baseline sample…

…Dobutamine Cardiogenic shock Bradycardia (second line therapy) Stress testing (due to induced increase in myocardial O 2 consumption) Regular : 2.0–20 μg/kg…

…than asymptomatic lesions. Predisposing conditions Aortic dissection and its variants are associated with conditions that cause medial degeneration or increase aortic wall stress. Relevant associations…

…can produce a transient and reversible mismatch between myocardial oxygen demand and blood supply, generally during exertion, emotional stress, or another stressor. Manifestations include angina…

…on cardiomyocytes Disruption of intracellular signalling and protein synthesis Electrical channelopathies Oxidative stress Cellular apoptosis and necrosis Progressive structural remodelling Alcohol associated hypertension and atherosclerotic…

…Non traditional cardiovascular mechanisms include: Uraemia associated inflammation Oxidative stress Vascular dysfunction Promotion of vascular calcification Albuminuria and proteinuria Neurohormonal activation Plasma volume expansion Myocardial…

…been described in HFpEF, while nitrosative stress and abnormalities of cellular and molecular myocardial function may further impair contraction and relaxation. Structural and vascular consequences…

…an event. EPS can thoroughly assess AV conduction and may include the infusion of agents to stress the AV node and His Purkinje system, such…

…Triglyceride synthesis and hepatocellular lipid accumulation consequently increase, with variable inflammation and oxidative stress. Metabolic dysfunction associated fatty liver disease affects approximately 10% of non…

…STEMI cases, a precipitating factor such as vigorous physical exercise, emotional stress, or a medical or surgical illness is present before the event. Although STEMI…

…to one half of cases. Reported precipitants include vigorous physical activity, emotional stress, and an intercurrent medical or surgical illness. Events may occur at any…

…Circulation ). A notable exception to this rule is the exercise stress test, in which the J 60 or J 80 is always used (because exercise…

…Mechanically, wall stress (the load on individual muscle fibers) increases while the contractile function worsens. Chronic aortic regurgitation also leads to increasing LVEDP and LAP…

…This condition causes hemodynamic changes that alter ventricular volume load, myocardial wall stress and coronary artery perfusion. These changes gradually lead to insufficient coronary perfusion …

…pulmonary embolism, pneumothorax). Hypertension. Smoking. Dyslipidemia (hyperlipidemia). Obesity and/or diabetes. Psychosocial stress. Alcohol abuse. Physical inactivity. Unhealthy diet. Cerebral / peripheral vascular disease. Cancer. Acute…