Procedurer The value of the exercise test lies not in ST depression alone but in the overall picture : exercise capacity, symptoms, blood pressure response, heart…

…pulmonary pressure, or haemodynamics Stress imaging is not recommended in patients undergoing urgent non cardiac surgery or those with an unstable clinical condition. In patients…

…similar) may undergo stress testing when their clinical condition is stabilized. This usually takes 2 to 3 days and the patient must not have experienced…

…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…

…relative. Briefly, exercise stress testing must not be performed in the presence of absolute contraindications. Relative contraindications call for an individualized assessment of the risks…

…corticosteroid abruptly after longer term treatment. Not giving a stress dose to a patient with adrenal insufficiency during acute illness. Confusing dexamethasone 0.75 mg…

…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…

Referensvärden The values below are starting points, not aims in themselves. Almost all of them have proved to work better as ranges to stay within…

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…

…administered at peak stress to capture blood flow distribution under these conditions. If stress imaging results are entirely normal, further imaging may not be necessary…

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…

…ventricular hypertrophy under normal loading conditions. Hypertrophic cardiomyopathy should not be confused with hypertrophy caused by increased loading conditions. Increased ventricular load is mostly caused…

…by emotional stress. Palpitations associated with physical activity, a large meal, emotional upset, or cold exposure. The absence of chest pain does not exclude clinically…

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

…heart failure, despite their negative chronotropic effect. Among persons who do not suffer from heart failure, chronotropic incompetence may be caused by beta blockers, amiodarone…

…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…

…sinoatrial pause (sinus pause/arrest): ECG characteristics & clinical implications A sinoatrial arrest occurs when the sinoatrial node does not discharge an impulse for ≥2 seconds…

…intima, and thrombus formation. Atherosclerosis is therefore not simply a disorder of lipid storage. Its biology includes: accumulation and modification of lipids within the intima…

…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…

…coexistence of defined clinical and laboratory components; the diagnostic criteria themselves are not reproduced in the available source material. Waist circumference is particularly important because…

…atherosclerosis not associated with demonstrable ischaemia may therefore remain undetected unless CT based coronary calcium assessment or another anatomical technique is added. Pathophysiological Basis Stress…

…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…

…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…

…necrosis and cardiac troponin elevation, although not every patient with an initial STEMI pattern has myocardial infarction as the final diagnosis. The underlying process usually…

…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…

…emotional stress) During vagal maneuvers (Valsalva maneuver, carotid sinus [baroreceptor] stimulation). It is common to discover SB in healthy young individuals who are not well…

…beats per minute. Although sinus tachycardia is the most common tachyarrhythmia, it may not always be straightforward to diagnose on the ECG. Moreover, many clinicians…

…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…

…of known HPA suppression to determine whether replacement can be stopped. The test is not the first line investigation in a suspected acute crisis. There…

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

…injury is separate from MI. It refers to cardiac troponin release that does not fulfil the criteria for ischaemic myocardial infarction. It may be acute…

…atrial fibrillation. Consequently, alcohol should not be initiated as a cardiovascular preventive strategy. A drink equivalent contains approximately 12–14 g of ethanol. Representative quantities…

…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…

…target organ damage. Although BP reduction is required, these patients generally do not need hospital admission or intravenous treatment. Some patients with acute pain, anxiety…

…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…

…the absence of persistent ST segment elevation. This does not imply low risk: patients with NSTE ACS may have substantial myocardial ischaemia, dynamic ECG abnormalities…

…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…

…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…

…segment is flat and isoelectric. The transition from ST segment to T wave is smooth, and not abrupt. ST segment deviation (elevation, depression) is measured…

…of exercise stress tests, where ischemic ECG changes always precede symptoms of ischemia. In summary, if an ECG recorded during chest pain does not display…

…ischemia. Indeed, it may be so efficient that a total occlusion in the main artery may not lead to infarction due to the collaterals. Occasionally…

…30 minutes of severe ischemia. If myocardial perfusion (blood flow) in the ischemic zone is not restored before that time limit, the cell will die…

…frequent in type A IMH. IMH is classified anatomically according to the Stanford system: Type A IMH: involves the ascending aorta. Type B IMH: involves…

…during effective decongestion and overall clinical improvement does not necessarily indicate an adverse outcome. Classification of CKD CKD severity is classified by eGFR and albuminuria…

…activity (PEA). Evaluation and Physical Examination The source material does not provide specific details regarding the physical examination maneuvers for patients with bradycardia. Diagnostics Electrocardiography…

…on the presenting electrocardiogram (ECG) and the presence of troponin elevation, ACS are classified into unstable angina (UA), non ST segment elevation myocardial infarction (NSTEMI)…

…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…

…segment depressions represent a benign form of subendocardial ischemia. Refer to Exercise Stress Testing for details. Hyperventilation Hyperventilation causes ST segment depressions very similar to…

…and nurses' stations in order to not disturb the patients' rest. It was believed that the mere presence of physicians and nurses caused harmful stress…

…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…

…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…

…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…

…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…

…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…

…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…