…anaphylaxis, deep neck infection, an expanding haematoma, facial trauma. An anticipated course requiring a secured airway — transfer, heavy sedation, surgery — and cardiac arrest. Contraindications There…

…Undrained pneumothorax. Facial trauma, facial burns or recent facial surgery that make a seal impossible. Recent surgery on the oesophagus or upper gastrointestinal tract, ileus…

…a Dieulafoy lesion, angiodysplasia, malignancy and an aortoenteric fistula. Variceal bleeding generally has a higher early mortality than non variceal bleeding [1,2]. Upper gastrointestinal…

…RR interval) Hodges’ formula This method corrects the QT interval by adding a factor based on the difference between the heart rate and 60 beats…

…For example, a patient with acute graft occlusion may report an abrupt reduction in walking distance before claudication, accompanied by moderate pain or paresthesia, while…

…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…

…May be accompanied by diaphoresis, dyspnoea, nausea, vomiting, fatigue, faintness, or belching. Radiation to both arms or shoulders has a particularly strong association with myocardial…

…jaw, upper back, and abdomen, as well as dyspnea and nausea (anginal equivalents) [7]. Clinicians must consider both cardiac and non cardiac etiologies [1]. Cardiac…

…myocardial injury, demonstrated by a rise and/or fall in cardiac troponin with at least one value above the 99th percentile upper reference limit; and…

…uncommon to have a non ischemic ECG (absence of ST T changes) during chest pain caused by myocardial ischemia. This is corroborated by millions of…

…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…

…in the upper lead appears very disorganized, there are visible QRS complexes. The signal in the lower lead shows that the rhythm is a polymorphic…

…the procedure fails: the incision is too small, so that the cavity closes again within a day, and the abscess sits somewhere that makes incision…

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

…with the same risk as manifest hypertension. Non dipping: a nocturnal fall in pressure of < 10% of the daytime value; an independent risk marker…

… a higher threshold may be considered individually in ongoing ischaemia Upper gastrointestinal bleeding that has been stabilised 70 g/L — a more liberal strategy gives…

…applies where you work. They assume normal renal and hepatic function, a non pregnant adult of normal weight, and individual assessment. See the separate quick…

…50 × the upper limit of normal: paracetamol poisoning, ischaemic hepatitis ("shock liver") or acute viral hepatitis. The three are distinguished by the history and the…

…basis of percussion and a chest radiograph alone belongs to an earlier era. The needle is inserted close to the upper border of the rib…

…gas or fumes. Preoperative assessment before thoracic or upper abdominal surgery in a patient with known lung disease. Follow up of treatment effect and of…

…non hypertensive home or ambulatory pressure. Masked hypertension: office pressure below the hypertension threshold but hypertensive home or ambulatory pressure. Office measurements provide only a…

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

…one value above the 99th percentile upper reference limit (URL). The injury is considered acute if there is a documented rise and/or fall of…

…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;…

…caused by left heart disease from pulmonary vascular disease. Although a PAWP of 12 mmHg represents the upper limit of normal in some assessments, a…

…concentration above the assay specific 99th percentile upper reference limit (URL). It is considered acute when there is a rise and/or fall in cTn…

…wheezing, or coughing before cardiac arrest also speak for anaphylaxis (airway obstruction caused by a foreign body is an important differential). Treatment of anaphylaxis and…

…1, upper panel) is typically smooth, symmetric and positive. The P wave in lead II may, however, be slightly asymmetric by having two humps. This…

…Fortunately, most children (even the youngest) can be distracted by a parent or other personnel. Distracting the child during ECG recording may be recommended to…

…video lecture is accompanied by the detailed article The normal electrocardiogram (ECG). A brief summary of the video lecture and the article is provided below…

…time indicates a substantially increased risk of myocardial infarction and stroke. Indications Intermittent claudication, rest pain in the foot or leg, or a non healing…

…monitoring Drug Comment : : Vancomycin (intravenous) Loading dose by weight, maintenance dose by renal function and drug concentration Gentamicin and other aminoglycosides A single dose initially…

…consultation between the intensive care physician and the transplant service. Contraindications An expressed refusal by the deceased — in the donation register, on a donor card…

…the upper fornix is visible. 6. Fluorescein and cobalt blue light. The dye adheres where the epithelium is absent. Vertical, linear scratch marks suggest a…

…by the injury or by the treatment. Indications A clinically or radiologically confirmed dislocation of the shoulder, elbow, finger, patella, jaw or hip prosthesis. A…

…3. Correct the hypokalaemia. Aim for a serum potassium in the upper normal range, around 4.0–4.5 mmol/L, and continue replacement throughout…

…suggesting alternative etiologies, such as a sensation of postnasal drip, frequent throat clearing, sneezing, and rhinorrhea, which may indicate upper airway cough syndrome. Symptoms of…

…LQTS) is characterised by an abnormal prolongation of the QT interval on the surface electrocardiogram (ECG), which predisposes the myocardium to a specific form of…

…a reduction in ischaemic stroke, particularly among women with stroke risk factors, but this benefit was accompanied by increased serious gastrointestinal bleeding and a non…

…arm, jaw, neck, or upper back. Chest discomfort triggered by emotional stress. Palpitations associated with physical activity, a large meal, emotional upset, or cold exposure…

…represent a more favorable profile, as the upper limit of the "healthy" range can still harbor significant metabolic risk. 3 For patients with a BMI…

…are important differences. These differences are largely explained by the dramatic physiological and anatomical changes that take place during infancy and childhood. The most dramatic…

…displays a positive P wave throughout. Figure 2 (above) does not show that the P wave in lead II might actually be slightly asymmetric by…

…medicine Definition and pathophysiology Peripheral artery disease (PAD) is a clinical disorder caused by stenosis or occlusion of the aorta or arteries supplying the limbs…

…PCI In a patient with normal baseline cTn, type 4a MI is defined by: cTn greater than 5 times the 99th percentile upper reference limit…

…should be distinguished from severe muscle injury. Myopathy is characterized by muscle symptoms accompanied by CK greater than 10 times the upper limit of no

…pressure, squeezing, or a crushing sensation across the precordium and may radiate to the neck, shoulder, jaw, back, upper abdomen, and left or right arm…

…This is explained by the low turnover of cardiac muscle cells ( Parmacek et al ). Cardiac troponin levels rise within a few hours after the onset…

…myocardial demand, typically exercise. Recent guidelines issued by the European Society for Cardiology (ESC) suggest a new classification ( Knuuti et al, 2019/2020 ), in which…

…myocytes) which can be detected by elevated levels of cardiac proteins in the blood. Diagnostic criteria for acute myocardial infarction A diagnosis of myocardial infarction…

…all pediatric patients. Sinus rhythm is defined by the following criteria: Regular rhythm with a ventricular rate within the age specific normal interval. P wave…

…are important differences. These differences are largely explained by the dramatic physiological and anatomical changes that take place during infancy and childhood. The most dramatic…

…interval must always be assessed when interpreting the ECG. Long QT syndrome (LQTS) is manifest when a long QT interval induces ventricular arrhythmias. Figure 1…

…confirmed by a typical rise and/or fall of high sensitivity cardiac troponin (hs cTn), with at least one value above the 99th percentile upper…

…Sinoatrial (SA) block implies that the impulses discharged in the sinoatrial node are either not conducted to the atria or are so with a delay…

…myocardial demand, typically exercise. Recent guidelines issued by the European Society for Cardiology (ESC) suggest a new classification ( Knuuti et al, 2019/2020 ), in which…

…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…

…increases but at a certain threshold, pressure rises rapidly with further volume increases. This is explained by the existence of an upper limit for ventricular…