…the Framingham Heart Study, this linear correction formula adjusts the QT interval based on heart rate without involving square or cube roots. It has been…

…mg Oral bioavailability about 35 per cent Paracetamol PO or IV 1 g × 4 The basic analgesic; always give it in parallel unless contraindicated NSAID…

…preferred. An increase of 1 2 mEq/L per hour for a total of 4 6 mEq/L in 24 hours may be targeted. Chronic…

…A total of 292,000 cases of IHCA occur annually in the United States, resulting in an incidence of 7 IHCAs per 1,000 hospital…

…For example, Bazett's formula is only suitable in adults with a heart rate between 60 and 90 beats per minute. Bazett's formula over…

…a total of three boluses, if severe symptoms persist and the initial rise is insufficient [3,6]. European protocols have also used 150 mL per…

…cause of death in stable outpatients with heart failure. JACC. Braunwald et al: Determination of fraction of left ventricular volume ejected per beat and of…

…per cm above 152 cm. Adjusted body weight: ideal weight + 0.4 × (actual weight − ideal weight). Used for aminoglycosides and when estimating creatinine clearance in…

…nasal masks and total face masks are alternatives in intolerance. A hydrocolloid dressing for the bridge of the nose applied before the mask goes on…

…revolutions per minute, kept steady. 3. ECG continuously , with a printout every minute and on symptoms. 4. Blood pressure every second minute and on symptoms…

…on the venous capacitance vessels. Hence, Clevidipine reduces blood pressure without affecting cardiac filling pressures. • Clevidipine is more effective than nitroglycerin, nitroprusside, and nicardipine in…

…on the venous capacitance vessels. Hence, Clevidipine reduces blood pressure without affecting cardiac filling pressures. • Clevidipine is more effective than nitroglycerin, nitroprusside, and nicardipine in…

…perfusion imaging is based on the principle that myocardial blood flow demonstrates marked differences between rest and stress conditions, particularly in significant coronary artery stenosis…

Myocardial ischemia and infarction Definition and pathophysiology A chronic total occlusion (CTO) is a complete or nearly complete coronary arterial obstruction that has persisted for…

…but an atherosclerotic plaque may prevent oxygen supply from increasing in parallel with oxygen demands. Depending on several factors– including the severity of the stenosis…

…of the QT interval (QT duration). The QT duration represents the total time for depolarization and repolarization. It is measured from the beginning of the…

…on the basis of morbid anatomy. This is not a new experience for either the pathologist or the internist. That there is something lacking in…

…total mortality. Left bundle branch block is more common in individuals with structural and ischemic heart disease. Assessment of ischemia on ECG is difficult in…

…cholesterol, nor for glucose when the diagnosis is based on HbA1c. Albumin affects the total calcium — use the ionised calcium or correct for albumin. Biotin…

…based on presumed consent : a person who has not expressed opposition is presumed to have consented to donation. The person's wishes are established in…

…osmolality 300 mosm/kg or total osmolality 320 mosm/kg Typical patient Often type 1 diabetes, but also occurs in type 2 diabetes Usually type…

…FVC Forced vital capacity FEV₁/FVC The ratio that defines obstruction PEF Peak expiratory flow — variability rather than the absolute value TLC Total lung capacity…

…measure of body fat based on height and weight. It is calculated by dividing body weight in kilograms by the square of height in meters…

…ischemia. Hypertension. Hypertensive emergency, including in pregnancy. Postoperative hypertension. Mechanism of action Combined beta adrenergic and alpha adrenergic blocker with rapid onset of action. Labetalol…

…channel blocker (CCB). Nicardipine inhibits the influx of extracellular calcium in the myocardial and peripheral vascular smooth muscle cell membranes, thus inhibiting the contraction of…

…solely on anatomical factors, ignoring clinical variables such as age, diabetes, and renal function, which significantly impact outcomes. Inconsistent Predictive Value : While effective in PCI…

…or low. Clinical Significance Non HDL C is strongly associated with cardiovascular risk for both initial and on treatment assessment. In most studies, its association…

…PCI of chronic total occlusion lesions may improve angina and quality of life, but randomized trials have not demonstrated reductions in mortality or myocardial infarction…

…37 Haemodynamic complications 0.26 Cardiac chamber perforation 0.03 Other complications 0.28 Total major complications 1.70 In another large diagnostic catheterization analysis…

…measure total plaque burden or stenosis severity directly. A patient may have little or no calcium despite clinically relevant non calcified plaque, particularly in middle…

…benefit depends on baseline cardiovascular risk and the magnitude of LDL C reduction. Thus, even a modest absolute reduction may be clinically important in individuals…

…regulation. Diagnosis is based on the coexistence of defined clinical and laboratory components; the diagnostic criteria themselves are not reproduced in the available source material…

…of life. The clinical impact should be assessed in terms of: Symptom frequency and duration. Functional limitation and effect on activities of daily living. Workload…

…is an acute myocardial infarction associated with a working diagnosis of persistent ST segment elevation or an accepted equivalent in the setting of ischaemic symptoms…

…patients with total and proximal occlusions may present without ST segment elevations (which they should exhibit) due to rich collateral circulation in the ischemic area…

…elevation in acute transmural myocardial ischemia is discussed in the chapter ST elevations in ischemia and differential diagnoses. In cardiac arrest caused by acute total…

…A diagnosis of left ventricular hypertrophy is based on total left ventricular mass, which can be calculated by obtaining the measurements shown in Figure 1…

…The Bernoulli principle is based on the law of conservation of energy , which states that the total energy of an isolated system remains constant over…

…on the ECG are assessed: Normalization (return) of ST segment elevations Rapid T wave inversion Normalization (return) of ST segment elevations Successful reperfusion results in…

…STEMI criteria and occlusion patterns on the ECG Classic ST elevation criteria New ST elevation at the J point in at least two anatomically contiguous…

…turned has not finished being titrated. Expect an opioid naive adult to need 5–15 mg of morphine in total. If more than that is…

…age, the sex and the ancestry before the measurement; the reference values are based on them. In kyphosis, or when the patient cannot stand, the…

…to a total maximum of 3 mg . Doses below 0.5 mg can paradoxically worsen the bradycardia and must be avoided. Atropine acts on the…

…clinical risk stratification for predicting stroke and thromboembolism in atrial fibrillation using a novel risk factor based approach: the Euro Heart Survey on Atrial Fibrillation…

…In routine clinical practice, amiodarone plasma levels are rarely useful, as myocardial concentration—which correlates best with total cumulative dose—may be a better predictor…

…5). Two recent studies published in JAMA Cardiology are summarized below. Shi et al present data on 416 patients hospitalized with COVID 19. In total…

…future plaque rupture. Anatomical severity versus functional significance The physiological effect of a coronary lesion depends on more than its visual diameter reduction. Relevant determinants…

…plexogenic, and sometimes thrombotic changes that may result in near total obliteration of affected vessels. Genetic, molecular, and acquired factors may interact in its development…

…Their duration is short; they typically disappear within minutes after a total occlusion in a coronary artery occurs (then of course, the ST segment will…

…Wallmuller C, Meron G, Kurkciyan I, et al. Causes of in hospital cardiac arrest and influence on outcome. Resuscitation 2012;83:120611. Wood S. Interactions…

Echocardiography Standardized myocardial segmentation for echocardiography and cardiac imaging Cardiovascular imaging modalities have developed rapidly in the past few decades. The repertoire of available methods…

…included in the QRS duration, the total QRS duration will be prolonged. Individuals with accessory pathways (Kent's bundle) only display pre excitation on the…

…whether the difficulties were anticipated, whether the position and the equipment are in order, and whether there is an explicit plan for what happens when…