…context of cardiac tamponade, increased pressure within the pericardial sac impedes venous return to the right atrium. Similarly, in tension pneumothorax, the elevated intrathoracic pressure…

…failure. The pathophysiology of these events may stem from reversible causes, including hypovolemia, hypoxia, cardiac tamponade, tension pneumothorax, preexisting acidosis, drug overdose, hypothermia, and hyperkalemia…

…Respiratory conditions : Tension pneumothorax Drowning Airway obstruction Hanging Pneumonia High altitude sickness Aspiration Chronic obstructive pulmonary disease (COPD) Bronchospasm (asthma) Other : Coma Central hypoventilation syndromes…

Cardiology Definition and pathophysiology Low density lipoprotein cholesterol (LDL C) is the principal therapeutic target in lipid management because LDL and other apolipoprotein B containing…

…hypertension Pulse pressure 40–60 mmHg A narrow pulse pressure suggests a low stroke volume Capillary refill < 3 s A simple and validated marker…

…morphology, which replaces the sharp negative S wave seen in the low risk beat — the previously undescribed biomarker identified by the deep learning model. Predicting…

…rationale Bempedoic acid is an oral, small molecule lipid lowering agent used to reduce low density lipoprotein cholesterol (LDL C), particularly when statins cannot be…

…Familial hypercholesterolaemia (FH) is an inherited disorder characterized by persistently elevated plasma low density lipoprotein cholesterol (LDL C) from early life and a consequent excess…

…Proprotein convertase subtilisin/kexin type 9 (PCSK9) is a hepatic protein that regulates the availability of the low density lipoprotein receptor (LDL receptor) on hepatocytes…

…dilatation Biventricular hypertrophy Simultaneous hypertrophy of the left and right ventricle is rather common. The ECG has low sensitivity with respect to detecting biventricular hypertrophy…

…recovery. A patient who stops at a low workload with a fall in blood pressure is a high risk patient even with normal ST segments…

…damage. Conversely, a rapid rise in blood pressure from a previously low level can cause organ damage at lower values, for example in pregnancy, acute…

…part of the initial stroke assessment [1]. Treat immediately when there are symptoms and a low glucose. Do not wait for the venous laboratory result…

…halve before the creatinine leaves the reference range, because the relationship is hyperbolic. In people with a low muscle mass — the elderly, the undernourished, amputees…

…The quality of the test determines its entire value: a poorly performed manoeuvre gives a falsely low FVC and thus a falsely normal FEV₁/FVC…

…in meters. BMI is relevant for medical prognostication as it serves as a quick, low cost, and reliable screening tool for body composition, risk of…

…risk in women based solely on gender. This aims to prevent unnecessary anticoagulation in low risk female patients, thereby reducing the potential for bleeding complications…

…Their clinical importance arises from the causal role of low density lipoprotein cholesterol (LDL C) and other apoB containing lipoproteins in atherosclerotic cardiovascular disease (ASCVD…

…of cholesterol delivered to the liver. The resulting hepatic response includes increased expression of low density lipoprotein receptors (LDLRs), which enhances removal of circulating LDL…

…PCSK9 synthesis decreases circulating PCSK9, increases the availability of hepatic low density lipoprotein cholesterol (LDL C) receptors at the cell surface, and thereby enhances removal…

…and acute coronary syndromes (ACS). Its principal therapeutic objective is reduction of low density lipoprotein cholesterol (LDL C), the primary lipid target in contemporary secondary…

…SGLT2 is a high capacity, low affinity transporter situated in the S1 and S2 segments of the renal proximal tubule. It accounts for approximately 90…

…and appear brighter on the image. Structures with low echogenicity reflect less ultrasound and become darker in the image. Acoustic shadowing Some structures have very…

…shown in Table 1, BLS is an exceptionally effective treatment, with a very low number needed to treat (NNT), indicating high effectiveness. Although BLS is…

…symptoms suggestive of CAD. SPECT imaging is recommended as the initial study in patients with low to moderate risk of CAD. In patients with a…

…valve leaflets (Figure 1). Rheumatic heart disease is the leading cause of mitral regurgitation in low and middle income countries. Rheumatic heart disease typically results…

…fibrillation, coarse (large amplitudes). ECG 4 . Ventricular fibrillation. ECG 5 . Ventricular fibrillation, fine (low amplitudes). ECG 6 . Ventricular fibrillation, coarse. ECG 7 . Ventricular fibrillation, coarse…

…hypercapnia has been assessed. 3. Take an arterial blood gas in respiratory compromise, low saturation, suspected carbon dioxide retention, reduced consciousness, or when NIV is…

…develops over hours to days [1,2]. Six steps Step Question Practical interpretation : : : 1 Is the pH low or high? pH <7.35 is acidaemia…

…by contrast, is not a contraindication; the specimen may be taken even at very low platelet counts, followed by compression. Infection in the skin overlying…

…hours Prednisolone 5 mg Moderate Intermediate, 12–36 hours Methylprednisolone 4 mg Low Intermediate Betamethasone 0.6 mg None Long, 36–54 hours Dexamethasone 0…

…2.5 mm tall Right atrial enlargement P wave in V1 Terminal negative component 1 mm × 40 ms Left atrial enlargement Low voltage QRS <…

…Atrial flutter, which often converts at low energy and is difficult to terminate pharmacologically. Ectopic atrial tachycardia or SVT that has not been terminated by…

…available. Do not then try "by feel" — refer to ENT. Relative — a low threshold for referral: Marked swelling or inflammation around the object. A small…

…adrenaline in anaphylaxis, ceftriaxone, ferric carboxymaltose Rapid, 10–20 min Subcutaneous (SC) Insulin, low molecular weight heparin, GLP 1 analogues, methotrexate, biological agents, adrenaline (second…

…high dose Adrenaline, low dose Dopamine, intermediate dose Isoproterenol Dopamine, low dose Dobutamine Levosimendan Amrinone Milrinone Nitroglycerin Nitroprusside Figure 1. The approximate position of each…

…per 2 h is a reasonable target ScvO₂ 70–80 % A low value suggests inadequate oxygen delivery Capillary refill < 3 s Equivalent to lactate…

…ventilating is not experienced in intubation. Planned anaesthesia for short procedures in a fasted patient at low risk of aspiration. A conduit for fibreoptically assisted…

…cannot be established with spirometry alone, but is suspected when the FVC is low with a normal or high ratio. Reversibility: an increase in FEV₁…

…most useful signs Low voltage on the ECG, electrical alternans Supportive; it does not exclude Diastolic collapse of the right atrium and right ventricle The…

…miss a posterior dislocation. The exceptions are an obvious recurrent dislocation in a patient with known instability and a low energy mechanism, and a neurovascularly…

…who have low BSA or severe extra aortic features 45 mm • Patients who are undergoing aortic valve surgery • Patients with Marfan syndrome who have additional…

…Use Aspirin with caution in the following cases: Concurrent anticoagulant therapy (e.g., coumarin derivatives or heparin—except low dose heparin). Patients with gastrointestinal disorders…

…Hypertension: History of hypertension (1 point) Score 1 year risk of bleeding Low risk 0 3 0.8% Intermediate risk 4 2.6% High risk…

…decisions on anticoagulation Men Women Points Recommendation Evidence Recommendation Evidence 0 No treatment Low No treatment High 1 Oral anticoagulation (warfarin or NOAK 1 is…

…Interpretation of HAS BLED score A score of 0 1 indicates low risk A score of 2 suggests moderate risk A score of 3 or…

…Incidence of major bleeding (per 100 patient years) 0 Low 1.9 1 Low 2.5 2 Intermediate 5.3 3 Intermediate 8.4 4…

…IM: (1:1000): 0.1 to 0.5 mg (max 1 mg) Safe for peripheral use +++++ ++++ +++ N/A Beta effect more pronounced at low doses…

…1. Assess Prior Treatment • No prior treatment, low dose, or low intensity lipid lowering therapy: • Start high potency, high dose statin therapy (Class I recommendation)…

…in the SYNTAX trial, patients with high scores had significantly higher mortality and MACE rates compared to those with low scores. Monitor Quality of Care…

…PE) is classified according to haemodynamic status, clinical severity, evidence of right ventricular (RV) dysfunction, and myocardial injury. This classification is central to determining the…

…and skin, with myocardial concentrations reaching 10 to 50 times those found in plasma. Plasma clearance is low, renal excretion is negligible, and doses do…

…estimated 10 year cardiovascular risk of 10%. Approximately 12% reduction in non fatal myocardial infarction with low dose aspirin. Approximately 12% reduction in non fatal…

…antihypertensives, should prompt clinical suspicion [1]. Cardiac Signs and Symptoms Patients often present with symptoms of predominant right heart failure, including lower extremity edema, ascites…

…plaque characteristics. In the general population, the prevalence of asymptomatic carotid stenosis of at least 70% is low, reported as 0–3.1%. In contrast…

…20%. Other life threatening cardiopulmonary conditions account for approximately 5% of presentations in some populations. Despite this relatively low prevalence, missed myocardial infarction remains consequential…

…not developed for routine coronary prevention because of fatal infections and high cost. Low dose methotrexate did not reduce cardiovascular outcomes, and several other agents…

…difficult. In patients with normal renal function, the occurrence of contrast induced AKI is negligible or very low. Risk rises substantially with chronic kidney disease…

…no previous diagnosis of CAD, and a low clinical likelihood of obstructive disease when good image quality is expected. It is also an alternative to…

…The standard post ACS regimen is DAPT for 12 months, generally consisting of low dose aspirin and a potent P2Y12 inhibitor, preferentially prasugrel or ticagrelor…