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Cardiac arrest due to electrolyte imbalance

…hypocalciuric hypercalcemia, Addison's disease, renal insufficiency, therapeutic interventions with tamoxifen or lithium, thiazide administration, and over supplementation of calcium and vitamin D. ECG in…

Reduction of dislocations

…and usually general anaesthesia. An open dislocation. Inadequate analgesia or sedation — the procedure must not then be started. Radiography before reduction A radiograph is taken…

Evaluation of exercise stress test: ECG, symptoms, blood pressure, heart rate, performance

…Borg Rating of Perceived Exertion Scale There is a strong correlation between a person's perceived exertion rating times 10 and the actual heart rate…

Vulnerable Plaque and Mechanisms of Acute Coronary Occlusion

…progressive reduction of coronary blood flow sufficient to produce myocardial ischaemia and, when prolonged or severe, myocardial necrosis. It most commonly reflects atherothrombosis: disruption of…

Classification of Acute Coronary Syndromes (ACS) & Acute Myocardial Infarction (AMI)

…will experience severe chest pain due to the abrupt reduction of coronary blood flow. Acute coronary syndromes are subdivided into STE ACS and NSTE ACS …

Complications of Coronary Angiography and Vascular Access Management

…ostia. It remains the reference standard for defining the extent of coronary artery disease because it provides anatomical information while permitting functional assessment and, when…

Physics of myocardial perfusion imaging (SPECT, PET): Radiotracers, perfusion, blood flow and viability

…to construct images with high spatial and temporal resolution. PET offers higher spatiotemporal quality, as compared with SPECT. Quantification of blood flow using PET Quantitative…

Myocardial ischemia and infarction: lack of oxygen or imbalance between supply/demand

…consumption and thus infarct size. Beta blockers may limit or even reduce infarct size, which is generally attributed to its reduction of heart rate and…

Overview of the ECG Waves, Deflections, Intervals, Durations

…the depolarization (activation, contraction) of the ventricles. Although it may not always include a Q wave, R wave and S wave, it is still referred…

Acute exacerbation of COPD: quick reference

…an acute or subacute worsening of dyspnoea, cough and sputum in particular that exceeds the patient's normal variation and requires a change of treatment…

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