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Principles of myocardial perfusion imaging (SPECT, PET), coronary blood flow and flow reserve (CFR)

…intraluminal pressure. Coronary blood flow is also influenced by sympathetic and parasympathetic influences; sympathetic stimulation leads to vasoconstriction through the release of norepinephrine, while parasympathetic…

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

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

Blood transfusion and massive haemorrhage

…of validity — usually about five days — because new antibodies can form after transfusion or pregnancy. Check the validity before ordering blood ; an expired type and…

Ambulatory blood pressure monitoring and Holter ECG

…The set up and the instructions decide whether the investigation will be usable. Ambulatory blood pressure monitoring (ABPM) Indications Confirmation of newly detected hypertension — recommended…

Blood Pressure Targets in Older and Frail Adults

…baseline blood pressure is not markedly elevated. These apparent J shaped associations are considered unreliable for guiding treatment because of potential confounding, reverse causality, and…

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

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

Blood pressure

…suggests vascular disease, and the arm with the higher reading is used thereafter Two to three measurements one minute apart, taking the mean of the…

Vulnerable Plaque and Mechanisms of Acute Coronary Occlusion

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

Carotid Artery Disease: Screening, Medical Therapy and Revascularisation

…linearly with diabetes and carotid atherosclerosis tends to be more advanced than in people without diabetes. Carotid disease is also a marker of systemic cardiovascular…

Complications of Coronary Angiography and Vascular Access Management

…with acute coronary syndrome, randomized evidence has demonstrated lower rates of access site bleeding, surgical repair, and blood transfusion with radial access. Radial access has…

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