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Urinary catheterisation

…Instillation therapy and contrast studies of the urinary tract. Wound healing with a sacral pressure sore or extensive perineal wounds where urinary leakage prevents healing…

Cardiac arrest due to electrolyte imbalance

…hours duration): Due to cellular adaptations, rapid correction carries the risk of inducing osmotic demyelination syndrome (ODS). It is therefore recommended to raise serum sodium…

Reduction of dislocations

…an orthopaedic surgeon before attempting reduction. Posterior shoulder dislocation, which is often associated with fracture and requires an orthopaedic surgeon. Dislocation of a native hip …

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

…integrated assessment of six components: Symptoms Exercise performance (functional capacity, exercise capacity) Heart rate: maximal heart rate, heart rate response Blood pressure reaction ECG reaction:…

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)

…on the size of the thrombus and the plaque. The patient will experience severe chest pain due to the abrupt reduction of coronary blood flow…

Complications of Coronary Angiography and Vascular Access Management

…for defining the extent of coronary artery disease because it provides anatomical information while permitting functional assessment and, when appropriate, immediate percutaneous coronary intervention (PCI…

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

…radiotracers emit gamma photons directly. These gamma rays are detected by gamma cameras to create tomographic images of the left ventricle. In PET (Positron Emission…

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

…term to describe a reduction of blood flow to tissues and organs. A few decades later Cohnheim demonstrated that ligation of the left anterior descending…

Overview of the ECG Waves, Deflections, Intervals, Durations

…reflection of the electrical potentials generated by the left ventricle. QRS duration QRS duration is the time duration from the start to the end of…

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