…The diagnosis requires elevated levels of cardiac troponins. In addition to elevated troponins, the patient must display either symptoms or ECG changes consistent with myocardial…

…where it is stated that it is extremely uncommon to have a non ischemic ECG (absence of ST T changes) during chest pain caused by…

…More distal disease may cause foot symptoms, although lower extremity symptoms are much more common than upper extremity symptoms. The severity of symptoms should be…

…to optimal cardiovascular health. 2 Evidence suggests that a lower BMI, potentially around 21 kg/m², may represent a more favorable profile, as the upper…

…and cTnC. The isoforms cTnI and cTnT are specific to cardiac muscle cells. Cardiac troponin levels are extremely low in healthy subjects; the 99 th…

…ulcer bleeding are managed differently from the first minute. Peptic ulcer remains the commonest cause of upper gastrointestinal bleeding, but the differential diagnosis includes oesophagitis…

…female Normal <440 ms <430 ms <450 ms Upper limit 440–460 ms 430–450 ms 450–470 ms Prolonged 460 ms 450 ms 470…

…ischaemia (ALI) is an abrupt reduction in arterial perfusion of an upper or lower limb that causes tissue metabolic requirements to exceed available blood flow…

…presented in the parenthesis). Values without confidence interval are simply the 98 th percentile (i.e the upper reference limit). Age <1 day 1–3…

…pressure, tightness, heaviness, burning, or discomfort in the chest and may extend to the arms, shoulders, neck, jaw, upper back, abdomen, or epigastrium. Dyspnoea, nausea…

…arms, neck, jaw, upper back, and abdomen, as well as dyspnea and nausea (anginal equivalents) [7]. Clinicians must consider both cardiac and non cardiac etiologies…

…with myocardial infarction. Cardiac troponin identifies injury to myocardial cells, but infarction requires additional clinical evidence that the injury resulted from acute myocardial ischaemia. Thus…

…presented in the parenthesis). Values without confidence interval are simply the 98 th percentile (i.e the upper reference limit). Age <1 day 1–3…

…evident, ventricular tachycardia may appear more polymorphic in one lead (the upper lead). ECG 2 . Although the signal in the upper lead appears very disorganized…

…again within a day, and the abscess sits somewhere that makes incision in the emergency department the wrong move — in the hand, in the medial…

…irrespective of sex Mid upper arm circumference Midpoint of the upper arm < 23 cm suggests undernutrition in adults Calf circumference Largest circumference < 31…

…no conversation Cuff width ≥ 40% of the upper arm circumference — a cuff that is too narrow gives a falsely high reading The cuff at heart…

…Upper gastrointestinal bleeding that has been stabilised 70 g/L — a more liberal strategy gives worse outcomes A restrictive strategy is at least equivalent to…

…then 100 mg × 1 5–7 days Epiglottitis and other severe upper airway infection cefotaxime 1–2 g × 3 IV Depends on the diagnosis Always…

…6 + weight in kg Always have one size smaller to hand. The cuff is inflated to 20–30 cmH₂O measured with a manometer — a higher…

…2–5 a mixed pattern. Orders of magnitude that direct the work up ALT 50 × the upper limit of normal: paracetamol poisoning, ischaemic hepatitis ("shock…

…shows the most fluid, usually in the scapular line one to two intercostal spaces below the upper border of the fluid, but never below the…

…symptoms, and occupational exposure to dust, gas or fumes. Preoperative assessment before thoracic or upper abdominal surgery in a patient with known lung disease. Follow…

…device. Home blood pressure monitoring (HBPM): self measurement at home, generally with a validated upper arm oscillometric device. Ambulatory blood pressure monitoring (ABPM): automated measurement…

…atrium is activated passively. The upper boundary of this circuit may be located either anterior or posterior to the superior vena cava. A critical area…

…American Heart Association (AHA), and World Heart Federation (WHF) collaborated to redefine MI using a biochemical and clinical approach. This culminated in the Universal Definition…

…myocardial injury, demonstrated by a rising and/or falling troponin pattern with at least one value above the assay specific 99th percentile upper reference limit;…

…used to distinguish pulmonary venous hypertension caused by left heart disease from pulmonary vascular disease. Although a PAWP of 12 mmHg represents the upper limit…

…injury. Myocardial injury Myocardial injury is defined by at least one cardiac troponin (cTn) concentration above the assay specific 99th percentile upper reference limit (URL)…

…without dermatological or upper airway manifestations. Anaphylactic cardiac arrest should be suspected among younger patients, in case of known allergy, when exposed to potent allergens…

…to as P pulmonale . The reasons for this are explained below. The normal P wave contour on ECG The normal P wave (Figure 1, upper…

…arm electrodes are placed proximally on the upper arm. Placement of chest (precordial) electrodes are not changed but additional leads may be attached in children…

…myocardium to ventricular myocardium because the two are electrically isolated from each other by the fibrous rings ( anulus fibrosus). However, some people have an additional…

…on the upper arm. Locate the brachial signal in the antecubital fossa with the Doppler probe at 45–60° to the skin. Inflate to 20…

…clearance from day to day. Reassess the dose daily and follow creatinine. Underdosing in sepsis is more dangerous than exceeding the upper dose limit during…

…seal impossible. Recent surgery on the oesophagus or upper gastrointestinal tract, ileus and ongoing upper gastrointestinal bleeding. Marked agitation or inability to cooperate. Copious secretions…

…whom life sustaining treatment is withdrawn and total brain infarction is not expected to occur Death is confirmed by Direct criteria: clinical neurological examination and…

…Evert the upper eyelid. Ask the patient to look down. Grasp the eyelashes, press gently downwards on the upper border of the tarsal plate with…

…lies supine or sits. The upper arm is held adducted against the trunk and the elbow is flexed to 90 degrees. The forearm is moved…

…upper normal range, around 4.0–4.5 mmol/L, and continue replacement throughout the treatment. This is the prerequisite for the urine pH to…

…lips, tongue, and upper airway. Due to the risk of airway compromise, it represents a medical emergency. Evaluation and Physical Examination The evaluation of chronic…

…electrocardiogram (ECG), which predisposes the myocardium to a specific form of polymorphic ventricular tachycardia (VT) known as torsades de pointes (TdP). Drug induced LQTS and…

…other platelet pathways. The distinction between primary and secondary prevention is fundamental: Primary prevention refers to individuals without established atherosclerotic cardiovascular disease (ASCVD), coronary artery…

…periods, but chronic coronary disease can progress or destabilize abruptly, leading to an acute coronary syndrome (ACS). Clinical manifestations may therefore change over time, including…

…vena cava continues to the right atrium. Meanwhile, deoxygenated blood in the superior vena cava (which returns blood from the head and upper limbs) also…

…directed downwards and to the left in the frontal plane and this yields a positive P wave in lead II ( Figure 2 , right hand side)…

…above the 99th percentile upper reference limit, it must be stable or falling before a subsequent rise can reliably be attributed to acute procedural injury…

…symptoms (SAMS). These range from diffuse myalgia with a normal CK and no functional impairment to myositis with muscle inflammation and elevated CK. Rhabdomyolysis is…

…under acute coronary syndromes (ACS). Aortic dissection Pneumothorax Pulmonary embolism Mediastinitis (rare condition) In addition to these five conditions, there are numerous other causes of…

…syndromes (CCS) Stable coronary artery disease (CAD), frequently referred to as stable angina pectoris , has traditionally been defined and managed as a distinct clinical entity…

…interpretation in adults. The ECG must always be interpreted using a systematic approach in order to minimize the probability of missing significant abnormalities. The following…

…vena cava continues to the right atrium. Meanwhile, deoxygenated blood in the superior vena cava (which returns blood from the head and upper limbs) also…

…QT syndrome An abnormally prolonged QTc interval is referred to as long QT interval . The upper reference limit for QTc interval is 460 ms in…

Introduction to Coronary Atherosclerosis, Plaques, Atherothrombosis Coronary atherosclerosis is a chronic, progressive, and highly dynamic inflammatory disease of the arterial wall. It is characterized by…

…Figure 1. Upper tracing shows normal impulse conduction from the sinoatrial node to the atria. Atrial activation commences almost immediately after discharge of the impulse…

…syndrome (CCS) Stable coronary artery disease (CAD), frequently referred to as stable angina pectoris , has traditionally been defined and managed as a distinct clinical entity…

…upper panel). The atrial rate is typically faster than the ventricular rate. It may be very difficult to establish a diagnosis of third degree AV…

…pressure drops rapidly, without any significant changes in volume. This phase is referred to as isovolumetric relaxation (IVR; Figures 1 and 2). When the ventricular…