…haemodynamic responses, arrhythmias and prognosis, with diagnostic interpretation reserved for appropriately selected patients. Pathophysiological basis Exercise progressively increases myocardial oxygen demand through increases in heart…

…This article will deal with the physiology of exercise and emphasis will be placed on myocardial oxygen consumption and the development of myocardial ischemia during…

…in parallel with increased oxygen consumption during exercise. Thus, supply and demand are balanced and no ischemia occurs. (Some individuals display a benign form of…

…patients with total and proximal occlusions may present without ST segment elevations (which they should exhibit) due to rich collateral circulation in the ischemic area…

…initially stabilize and subsequently develop recurrent angina, recurrent ischaemic ECG changes, biomarker evidence of myocardial necrosis, or severe ischaemia on stress testing. Such developments may…

…Their development has improved procedural safety, reduced repeat revascularization, and broadened the range of lesions amenable to PCI. Stent selection must nevertheless be integrated with…

…to prevent the development of cardiovascular risk factors themselves, and from secondary prevention, which addresses patients with established disease to reduce recurrent events and mortality…

…software development, and progress in our understanding of the pathophysiology of cardiac disease. Ultrasound systems have become cheaper, more portable, more powerful, equipped with an…

…AF patients. Evidence suggests that the increased stroke risk in women is more closely associated with other comorbidities and age rather than sex alone. Consequently…

…or the development of an entirely new arrhythmia. Electrophysiologic mechanisms of proarrhythmia include prolongation of repolarisation, increased transmural dispersion, EAD mediated TdP, and alterations in…

…segment elevations that mimic acute myocardial infarction. Acute pericarditis is a primary differential diagnosis and presents with distinct characteristics compared to transmural ischemia [4, 5]…

…and aortic disease is less clearly defined, although triglycerides may contribute to the development and progression of aortic pathology. Severe HTG, especially when associated with…

…in the ECG, as well as cardiac diseases that may affect infants and children. Physiological and anatomical development during infancy & childhood In adults, the left…

…acute when serial measurements demonstrate a rise and/or fall. A stable elevation indicates chronic myocardial injury . Myocardial injury is not synonymous with myocardial infarction…

…do not prevent the development of new proximal atherosclerosis. The choice between procedures therefore depends on the balance between: Anatomical completeness and complexity of revascularization…

…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…

…pressure increases in parallel with economic development and industrialization. The increasing prevalence of obesity, diabetes, sedentary lifestyle, the rapid economic development and ageing of most…

…in the ECG, as well as cardiac diseases that may affect infants and children. Physiological and anatomical development during infancy & childhood In adults, the left…

…This manifests with three features on the ECG and the combination of these features are unique to pre excitation: ECG features of pre excitation Short…

…Risk of supraventricular tachyarrhythmia (tachycardia) Sinus node dysfunction is also associated with a high risk of developing supraventricular tachyarrhythmias, especially atrial fibrillation and atrial flutter…

…take the plasma osmolality, urine osmolality and urine sodium before treatment. 5. With severe symptoms: give hypertonic saline immediately. Do not wait for a complete…

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

…hypertension and atherosclerotic coronary disease In patients with heavy alcohol use, left ventricular dilation may precede the development of increased left ventricular hypertrophy and mass…

…The extracellular matrix is an active component of lesion development rather than merely a structural scaffold. Smooth muscle cells and fibroblasts contribute to matrix production…

…associated with similar clinical settings and frequently coexist in the same patient population. AF can act as a trigger for atrial flutter, and the development…

…biomarkers without affecting lipids or other major coronary risk factors. In patients with previous myocardial infarction and residual inflammation, defined by hsCRP ≥2 mg/L…

…overlapping with HFpEF, including abnormalities of LV relaxation and filling. Hypertension and diabetes can contribute to the development of heart failure in the preserved and…

…to the pulmonary circulation. Persistent pulmonary vascular disease can lead to right ventricular strain and dysfunction, which is associated with poor outcomes. Preserving right ventricular…

…sleep apnoea (OSA) and obesity hypoventilation syndrome, which further increase cardiovascular burden. Obesity may be a particularly important cause of HF with preserved ejection fraction …

…with contemporary reperfusion, particularly primary percutaneous coronary intervention (PCI). In a large epidemiological analysis, mechanical complications occurred in approximately 0.27% of STEMI cases and…

…interact in its development. PAH may be idiopathic, heritable, drug associated, or associated with conditions such as systemic sclerosis, HIV infection, cirrhosis, and sickle cell…

…imaging findings indicate that Q wave development relates more closely to infarct volume than to transmurality. Clinical Presentation and Symptoms Typical presentation Pain is the…

…diameter of the regurgitant jet is measured in PLAX, and then compared with the diameter of the LVOT. A jet diameter smaller than 25% of…

…endocarditis. With 2D and later 3D ultrasound, the technology has been greatly refined. Similarly, the development of transesophageal echocardiography (TEE) has been extremely valuable. Echocardiography…

…pacemaker is indicated in order to continue treatment with that medication. It should be noted that the development of AV block upon instigation of beta…

…common than the development of pathological Q waves after infarction. The sensitivity of fragmented QRS for myocardial infarction was 86%, as compared with 36% for…

…Figure 2 presents the entire electrocardiographic (ECG) development in STE ACS/STEMI. Note that a patient with STEMI may present during any of the phases…

…with the Cabrera format ( Figure 3 ): Figure 3. The Cabrera format and inverted lead aVR into –aVR. It is easier to study the inferior and…