…both are predictable. Indications Inability to protect the airway: reduced level of consciousness, loss of pharyngeal reflexes, vomiting with a risk of aspiration. Inadequate oxygenation…

…Absence of an adequate collateral circulation. A first or anterior infarction. Single vessel disease without collateral support. Chronic kidney disease, particularly in relation to VSR…

…and Physical Examination The initial evaluation of a patient with suspected syncope aims to determine whether the transient loss of consciousness was due to syncope…

…both are due to partial (incomplete) coronary artery occlusions , which implies that there remains residual blood flow in the artery. Moreover, management of NSTEMI and…

…lesions (these give a more superficial and less controllable depth of freeze). A size 15 scalpel or a pumice stone to pare down hyperkeratotic lesions…

…infarction process is more or less completed. Post ischemic T wave inversions emerge at the earliest 4–6 hours after an episode of ischemia/infarction…

…This is possible due to the small distance between the heart and the ultrasound transducer, and because less air filled lung tissue covers the heart…

…a less compelling basis for intervention. The source material does not provide a distinct symptom profile, physical examination pattern or biomarker signature specific to CTOs…

…below 93 per cent on air, or a falling PaO2 Circulation A systolic blood pressure of 100 mmHg or less, a MAP below 65 mmHg…

…of His. If there are cells (with automaticity) distal to the block, an escape rhythm may arise in those cells. For example, consider a complete…

…This is explained by the elevated intrapericardial pressure due to the tamponade. The increased pressure causes compression of the atria and the ventricles (particularly the…

…acute phase of STEMI. Death due to ventricular dysfunction, or mechanical complications, is much less common in the acute phase. The chain of care in…

…rates, but it is associated with less complete revascularization, less durable relief of angina in some patients and a greater likelihood of repeat PCI. Multivessel…

…before starting treatment. Clinical assessment History that affects the level of risk Ask briefly and to the point: When did the deterioration begin, suddenly or…

…main clinical rule Two questions determine the initial management: 1. Does the patient have severe neurological symptoms that may be due to the hyponatraemia? 2…

…an imaging biomarker of coronary atherosclerotic burden rather than as a direct measure of luminal obstruction. Calcified plaque is generally less likely to rupture than…

…block (LPFB) Left posterior fascicular block is much less common than LAFB. This is due to the fact that the posterior fascicle is larger and…

…is defined by the intermittent failure of atrial impulses to conduct to the ventricles, resulting in some P waves not being followed by QRS complexes…

…cycle) to terminate ventricular fibrillation. Cardioversion : Use of synchronized electric shock (i.e. a shock synchronized to the QRS complex). Typically used to treat atrial…

…Moisture completes a circuit across the mucosa, hydroxide ions are generated at the negative pole of the battery and produce a liquefactive necrosis that can…

…from the sinoatrial node to the atrium and this delay increases gradually until one impulse is completely blocked and a loss of P wave occurs…

…profound driver of global cardiovascular morbidity and mortality, primarily due to its association with ischemic stroke and systemic embolism. The contemporary understanding of AF has…

…75 %; single fibre EMG about 95 %). Contraindications Known hypersensitivity to edrophonium. Mechanical obstruction of the bowel or the urinary tract. Marked bradycardia, sick sinus syndrome…

…likelihood of arrhythmia onset. However, beta blockers do not completely eliminate the risk. In LQT3 patients, where arrhythmias often occur at rest due to late…

…lead to a suspicion of ARVC. The gradual loss of myocardium leads to ventricular dilation and right heart failure. Biventricular heart failure is less common…

…is attempted. Sudden cardiac death is defined as an unexpected death due to cardiac causes that occur within 1 hour of symptom onset. The person…

…on erythropoietin activity and erythropoiesis SGLT2 inhibition may also activate adenosine 5′ monophosphate activated protein kinase and inhibit mammalian target of rapamycin complex 1 signalling…

…48 hours after the infusion has been completed. Furthermore, the blood pressure lowering effect persists for a duration of 3 to 4 days post infusion…

…for myocardial injury. Interpretation of troponin T is more complex because injured skeletal muscle may express proteins detected by some troponin T assays. Troponin can…

…properly. Wide (also referred to as broad) QRS complexes indicate that ventricular depolarization is slow, which may be due to dysfunction in the conduction system…

…occurs when troponin forms complexes with immunoglobulins, leading to higher levels of troponin being detected with conventional assays. False positive elevations of troponin are rarely…

…lesion of atherosclerosis: the fatty streak [5] . Ruptured atherosclerotic lesion with atherotrombosis. Over decades, the lesion progresses from a simple fatty streak to a complex…

…are standard due to superior efficacy over monophasic devices. Electrode position (anterior posterior vs. antero lateral) does not affect success, but active compression of the…

…downregulated or completely ceased. The ischemic area will immediately display wall motion abnormalities. This is useful in emergency medicine since the presence of wall motion…

…ability is less robust in CABG treated patients, as surgery can bypass complex lesions irrespective of their angiographic complexity. Evolution: SYNTAX Score II To address…

…of mobility, cognition, independence, functional capacity, and quality of life may be equally important therapeutic objectives. Evidence from randomized trials is often less applicable to…

…versa ( Figure 17 ). Otherwise there is discordance (opposite directions of QRS and T) which might be due to pathology. A negative T wave is also…

…X linked recessive, and mitochondrial forms occur, albeit less frequently (McNally et al). Screening of family members is justified, including a 12 lead ECG, echocardiography…

…40 to 48 beats per minute, occasionally accompanied by junctional escape beats, which may present with P waves at the onset of the QRS complex…

…of a variant inherited from a parent. A de novo variant. Less commonly, autosomal recessive inheritance. X linked or other non autosomal dominant mechanisms. Complex…

…regarded as a series of completely discrete diseases. Heart failure extends across the full range of LVEF, and echocardiographic measurement is subject to meaningful variability…

…of the QRS complex will not be in the exact same phase as cells which depolarized during the end of the QRS complex. Due to…

…there is a risk of developing tachycardia induced cardiomyopathy. In pediatric populations, a distinct form of atrial tachycardia may occur due to embryological remnants within…

…echocardiography is less sensitive with respect to RVH, because the right ventricle is difficult to visualize clearly with trans thoracic echocardiography. Causes of right ventricular…

…intraventricular conduction delays were at particularly high risk of death due to arrhythmias. Note that other causes of wide QRS complex must always be considered…

…If the impulse is discharged distal to the bifurcation of the bundle of His, the QRS complexes will be wide (QRS duration ≥0.12 s…

…out of the stent, stent diameter less than 3 mm, long stent length Large thrombotic burdens increase procedural risk because thrombus can fragment, embolize to…

…principal causes of J waves, namely hypothermia, Brugada syndrome, early repolarization and hypercalcemia. Figure 1. Osborn wave (J wave). These waves occur due to hypothermia…

…after complex coronary intervention. The clinical importance of residual disease is also influenced by anatomic complexity and comorbidity, which themselves may contribute to progression of…

Echocardiography The standard transthoracic echocardiographic examination This chapter presents a sequential series of images that comprise a complete standard echocardiographic examination. The image views are…

…includes a complete ECG book, enriched with over 600 pages, engaging video lectures, challenging tests, and versatile study tools. From basic cardiac physiology to the…

…The ECG shows AV block III (complete heart block). P waves are not related to QRS. PP interval is constant, but independent of RR interval…

…narrow QRS complexes indicate that the block and the ectopic focus (which generates the escape rhythm) are located proximal to the bifurcation of the His…

…not merely to reduce cigarette consumption but to achieve complete abstinence from tobacco and ultimately from nicotine. Smoking is a major modifiable driver of atherosclerosis…

…Regardless of which waves are visible, the wave(s) that reflect ventricular depolarization is always referred to as the QRS complex . Naming of the waves…

…of poisons. Stabilisation according to ABCDE, the plasma glucose, a blood gas and an ECG all come before complete identification of the substance. Treatment of…

…results were clear: 89% of users were interested in obtaining a certificate upon course completion. Today we are pleased to share that we have created…

…may be complete or partial, depending on the size of the thrombus and the plaque. The patient will experience severe chest pain due to the…

…to recognize these situations since they should be managed clinically as STEMI. The explanation for this is simple: transmural ischemia is due to a complete…

…for a complete diagnosis or for grading. Antihistamines, corticosteroids, inhaled bronchodilators and nebulised adrenaline never replace intramuscular adrenaline [1,2]. Delayed administration of adrenaline is…