Myocardial ischemia and infarction Definition and Pathophysiology No reflow is impaired anterograde myocardial perfusion despite the absence of a flow limiting epicardial coronary stenosis. It…

…more stress, often corticosteroids, often impaired renal function. Prescribe basal insulin, mealtime insulin and the correction dose as three separate entries on the drug chart…

Myocardial ischemia and infarction Definition and Clinical Significance In stent restenosis (ISR) is recurrent narrowing within a previously implanted coronary stent. It represents a form…

…myocardial ischaemia with chest pain and ECG changes. Acute pulmonary oedema. Impaired consciousness. Synchronised cardioversion under sedation, at an energy level according to the local…

…the tube is safe. A misplaced tube in the airway produces no reliable symptoms in a patient with an impaired cough reflex, and the first…

…are elevated. The syndrome is therefore defined by symptoms and signs of congestion or impaired cardiac performance rather than by ejection fraction alone. Heart failure…

…plaque, thrombus, and implanted stents. The principal modalities used in the catheterization laboratory are intravascular ultrasound (IVUS) and optical coherence tomography (OCT). Unlike coronary angiography…

…insulin resistance, dyslipidaemia, elevated blood pressure and impaired glucose regulation. Diagnosis is based on the coexistence of defined clinical and laboratory components; the diagnostic criteria…

…localization, hemodynamic effects and possible impact on the coronary arteries. The tumors can be asymptomatic for a long time and be detected randomly when investigating…

…of one or both ventricles. Dilation of the left ventricle is virtually always accompanied by impaired left ventricular systolic function. It should be noted that…

…valvular disease or congenital heart disease. Cardiomyopathy leads to impaired cardiac function and heart failure. There are six main types of cardiomyopathy: Hypertrophic cardiomyopathy (HCM…

…impaired consciousness or new onset marked weakness rapidly progressive symptoms from several organ systems severe abdominal pain or repeated vomiting after probable allergen exposure sudden…

…before surgery, or while swelling is progressing. Take care in impaired sensation (neuropathy, spinal cord injury) — the patient does not feel the pressure sore. Preparation…

…a longer symptomatic course Consciousness Usually preserved, but may be impaired in severe DKA Cognitive impairment is more common, particularly at very high osmolality Blood…

…normal weight, and individual assessment. See the separate quick reference for dosing in impaired renal function. Respiratory tract Diagnosis Agent Dose Duration : : : : Pneumonia, non severe…

…not investigated. Contraindications Haemodynamic instability — hypotension, shock, impaired consciousness or pulmonary oedema. Treat the arrhythmia first. Known stricture or tumour of the nose, pharynx or…

…a concurrent benzodiazepine or gabapentinoid, marked hypovolaemia, head injury with impaired consciousness, biliary tract disease. There is no contraindication to analgesia in the acute abdomen…

…Indications Immediate (transcutaneous) pacing in bradycardia with haemodynamic compromise — hypotension, shock, impaired consciousness, heart failure, myocardial ischaemia or syncope — that has not responded to atropine:…

…contaminated wounds where a long time has passed since the injury (see below). Be particularly cautious with impaired healing: peripheral vascular disease, diabetes with neuropathy…

…heart failure, kidney or liver disease, especially when combined with diuretics (risk of fluid retention and impaired kidney function). Patients with bronchial asthma, chronic obstructive…

…score takes into account various risk factors that contribute to bleeding risk, including uncontrolled hypertension, impaired renal or liver function, previous stroke, history of bleeding…

…in heart rate, stroke volume, or vascular tone can significantly impact MAP, reflecting the dynamic interplay between cardiac function and vascular resistance. Advantages of measuring…

…History of stroke or transient ischemic attack (TIA). Severely impaired liver function classified as Child Pugh Class C. Dosage Adults Initial dose : A single loading…

…from it. AF has important consequences beyond the arrhythmia itself. It may cause symptoms and impaired quality of life, contribute to heart failure, and increase…

…orthostatic hypotension, or impaired autonomic compensation limits tolerability. Evidence Base and Its Limitations Few adults aged 85 years or older have been included in randomized…

…Despite congestive heart failure, a third or fourth heart sound is rarely heard due to restrictive pathophysiology and impaired ventricular relaxation [10]. There is also…

…absent or markedly reduced y descent. The clinical impact depends not only on effusion volume but also on the rate of fluid accumulation, pericardial distensibility…

…myocardial fibrosis, calcification, vascular remodeling, altered diastolic filling, chronotropic incompetence, and impaired hemodynamic stability commonly coexist. These changes promote hypertension, ischemia, valvular abnormalities, arrhythmias, and…

…indicate reduced cardiac output or impaired renal perfusion. Many patients have preserved cardiac output; increased venous and intra abdominal pressures, impaired renal venous outflow and…

…failure, particularly when left ventricular function is impaired Haemodynamic or electrical instability in advanced or acute presentations Left main disease may be clinically silent, and…

…During the acute infarction phase, endocardial inflammation and impaired regional contraction create conditions that favour thrombus formation. Extensive transmural septal infarction may also permit mural…

…or diffuse disease. No reflow represents impaired antegrade myocardial perfusion in the absence of a flow limiting epicardial stenosis. It is associated particularly with intervention…

…contributors include excess salt intake and salt and water retention, particularly when kidney function is impaired. Inadequate adherence to medication or dietary sodium restriction may…

…severe right sided failure and cardiogenic shock. The haemodynamic disturbance results from impaired right ventricular contraction and reduced forward flow through the pulmonary circulation. Consequently…

…absence of sounds on the affected side. Ultrasonography can reveal pneumothorax (highlighted by a lack of lung tissue) and its impact on cardiac function. Clinically…

…Figure 1. Components of a pacemaker. The pacemaker is commonly implanted under the clavicle, between the skin and the pectorialis major. The pulse generator has…

…of ventricular function. Impaired diastolic function (i.e diastolic dysfunction ) may lead to diastolic heart failure (i.e heart failure with preserved ejection fraction, HFPEF …

…that the right ventricle is pressure and/or volume loaded. The load itself leads to impaired right ventricular function, especially if the load becomes prolonged…

…feels breathless. Excessive oxygen delivery can raise pCO₂. The main mechanisms are impaired ventilation–perfusion matching, increased physiological dead space and the Haldane effect. It…

…amputee or muscle wasted patients, an apparently normal creatinine may therefore correspond to markedly impaired renal function [3]. Urine output can change before creatinine but…

…be well NIHSS A complete score by a physician or nurse experienced in stroke Functional impact A low NIHSS does not exclude a disabling deficit…

…a narrow pulse pressure, peripheral vasoconstriction, impaired consciousness, a rising lactate or a worsening acidosis. An assessed need for at least 4 units of red…

…be saved early for later targeted analysis. Initial monitoring and investigations Investigation Comment : : Plasma glucose Taken immediately and repeated in impaired consciousness, or with insulin…

…respiratory failure, impaired consciousness, or a need for a vasopressor After initial stabilisation Repeat the lactate if it was raised and follow the trend together…

…Activate the local major haemorrhage protocol in uncontrolled bleeding, shock or a rapid transfusion requirement 10 With impaired consciousness, an inability to protect the airway…

…diabetes, and renal function, which significantly impact outcomes. Inconsistent Predictive Value : While effective in PCI treated patients, its predictive ability is less robust in CABG…

…surgery : No dose adjustments are necessary. Impaired renal function : No dose adjustments are necessary. Impaired liver function : No dose adjustments are necessary. Elderly (≥ 65 years…

…At the other end, roughly two thirds of ICDs implanted for reduced LVEF never deliver an appropriate shock, so the false positive burden is substantial…

…clinical risk tools Acute RV failure is a rapidly progressive syndrome characterized by systemic congestion resulting from impaired RV filling and/or reduced RV output…

…in women than in men. Smoking, obesity and psychosocial factors are associated with a greater cardiovascular impact in women. Obesity, physical inactivity and depression are…

…renal disease are bidirectionally related: hypertension accelerates CKD progression, while impaired renal function further increases blood pressure. Non traditional cardiovascular mechanisms include: Uraemia associated inflammation…

…compression and a Venturi or “suction” effect have been proposed as mechanisms of inducible ischaemia. The functional impact depends on the bridge’s thickness, length…

…not confined to the ECG. Ischaemia may also produce angina, impaired exercise capacity, an abnormal blood pressure response or ventricular arrhythmias. A fall in systolic…

…prognosis. Pathophysiology The defining physiological abnormality is heart failure occurring with mildly impaired LV systolic function. The syndrome remains fundamentally one of impaired cardiac performance…

…patient related factors influence interpretation. Natriuretic peptide concentrations generally increase with age and are higher in patients with impaired renal function, reflecting both reduced clearance…

…myocardial necrosis [4]. Clinical Implications and Prognosis Mechanical and Diagnostic Impact LBBB causes extensive reorganization of left ventricular activation [2]. This leads to abnormal LV…

…not establish a benign diagnosis. ANOCA/INOCA is associated with recurrent symptoms, impaired quality of life, repeated hospital presentations and angiography, and increased short and…

…the coronary microcirculation. Microvascular angina reflects myocardial ischaemia caused by structural or functional microvascular abnormalities, impaired coronary flow reserve, reduced microcirculatory conductance, or abnormal arteriolar…

…signature specific to CTOs. Evaluation and physical examination Evaluation should establish: The severity and functional impact of angina or anginal equivalent symptoms. The response to…

…Fewer than half of patients with PAD have typical symptoms. Many have impaired walking or a slow gait without describing classic claudication. In older adults…