…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…

…tamponade, and sudden: Loss of pulse. Loss of blood pressure. Loss of consciousness. Electromechanical dissociation or pulseless electrical activity despite ongoing sinus rhythm on the…

…This evaluation should include a detailed history, thorough questioning of eyewitnesses, and a complete physical and neurologic examination. Blood pressure and heart rate should be…

…the hallmark of NSTEMI and unstable angina is chest pain (chest discomfort). However, the chest pain caused by NSTEMI and unstable angina is less severe…

…a cryoprobe for contact technique. Cotton buds for small lesions (these give a more superficial and less controllable depth of freeze). A size 15 scalpel…

…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…

…in apical windows (refer to Standard Transthoracic Echocardiogram: Complete Imaging Protocol). Nevertheless, there are obvious benefits of performing emergency bedside examinations, regardless of image quality…

…diagnostic angiography. Collateral vessels may maintain distal perfusion and permit visualization of the vessel beyond the occlusion when the patent donor artery is injected. The…

…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…

…consider a complete block located in the atrioventricular node. In such scenarios, cells in the bundle of His (which possess automaticity) will not be reached…

…considered less effective than thoracotomy. This is because it does not ensure complete drainage of the pericardium, and needles or catheters are at risk of…

…greater extent of ischemia present in STEMI. In STEMI, a complete coronary artery occlusion leads to transmural ischemia, affecting a larger portion of the myocardium…

…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…

…a PEF of 50 percent or less together with marked symptoms indicates a severe attack, while a PEF below 33 percent or signs of ventilatory…

…5. With severe symptoms: give hypertonic saline immediately. Do not wait for a complete work up of the cause or for imaging. 6. Document the…

…Radiation exposure of approximately 1–1.5 mSv with contemporary techniques The total CAC burden should be reported using the Agatston score. A complete report…

…the T wave in lead aVL will be inverted and in some cases lead I will display a monophasic R wave instead of qR complex…

…to 3 block, which is less common. 5 to 4 block is even more uncommon. Note that the higher the degree of block, the more…

…the phase of the cardiac cycle) to terminate ventricular fibrillation. Cardioversion : Use of synchronized electric shock (i.e. a shock synchronized to the QRS complex)…

…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…

…The contemporary understanding of AF has evolved significantly; it is no longer viewed merely as an electrical anomaly but as a progressive, complex atrial myopathy…

…event of bradycardia, bronchospasm, marked salivation or increasing weakness, and give atropine. 8. Monitor for at least 30 minutes after the test has been completed…

…genotypes. These medications mitigate adrenergic stimulation, thereby decreasing the likelihood of arrhythmia onset. However, beta blockers do not completely eliminate the risk. In LQT3 patients…

…genetic cardiomyopathy that predominantly affects the right ventricle. ARVC is defined by the gradual loss of myocardial cells, which are replaced by fat and fibrous…

…ECG features of ventricular fibrillation The ECG shows irregular waves with varying morphology and amplitude. No P wave, QRS complex or T wave can be…

…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…

…are less common. Levosimendan may be administered simultaneously with milrinone. The drugs can also be given sequentially. Hypotension can be counteracted with simultaneous administration of…

…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…

…in order to give the reader firm knowledge of normal findings , normal variants (i.e less common variants of what is considered normal) and pathological…

…of interference with antibodies in the blood is higher for troponin I (cTnI). Antibody interference is a rare phenomenon that occurs when troponin forms complexes…

…synthesis and degradation. Histologically, a vulnerable plaque is defined by a fibrous cap thickness of less than 65 μm, heavy macrophage infiltration, sparse smooth…

…supraventricular versus ventricular distinction less critical. Performance involves sedation (e.g., intravenous midazolam, propofol, or etomidate), routine blood pressure and oximetry monitoring, availability of atropine…

…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…

…PCI treated patients, its predictive ability is less robust in CABG treated patients, as surgery can bypass complex lesions irrespective of their angiographic complexity. Evolution:…

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

…positive QRS complex should be followed by a positive T wave, and vice versa ( Figure 17 ). Otherwise there is discordance (opposite directions of QRS and…

…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…

…may present with P waves at the onset of the QRS complex. Nonrespiratory sinus arrhythmia may also be observed as a consequence of drug toxicity…

…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…

…classification is clinically useful but should not be regarded as a series of completely discrete diseases. Heart failure extends across the full range of LVEF…

…isoelectric; this occurs if there are electrical potential differences in the myocardium by the end of the QRS complex (it typically causes J point depression)…

…Less frequently, it may also present in individuals without identifiable cardiac disease. Contributing factors include pulmonary disorders, particularly obstructive pulmonary disease, the use of theophylline…

…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…

…QRS complex. References Aro AL, Anttonen O, Tikkanen JT, et al. Intraventricular conduction delay in a standard 12 lead electrocardiogram as a predictor of mortality…

…QRS complexes are normal (provided that intraventricular conduction is normal). If the P wave is visible, it is retrograde in lead II (because of the…

…Residual dissection at a stent margin, impaired flow into or out of the stent, stent diameter less than 3 mm, long stent length Large thrombotic…

…and 4, the ST segment elevations are indeed associated with what appears to be an interruption in the QRS complex and initiation of repolarization. However…

…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…

…Dr. Araz Rawshani, a leading cardiovascular researcher at the University of Gothenburg and Sahlgrenska University Hospital, Sweden, is the force behind the comprehensive online course…

…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…

Cardiology Clinical medicine Definition and cardiovascular rationale Smoking cessation is the complete discontinuation of tobacco smoking, with avoidance of second hand smoke and, where possible…

…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…

…a blood gas and an ECG all come before complete identification of the substance. Treatment of acute poisoning consists of four parallel components: supportive treatment…

…necessary ECG skills required for clinical work. You must complete the ECG course in order to obtain your certificate. New ECG test will be added…

…elevations on ECG. NSTE ACS is caused by partial occlusion of the artery (i.e. coronary blood flow is not completely obstructed). NSTE ACS typically…

…Elevation Myocardial Infarction) in terms of treatment and interventions. As discussed previously, STEMI is the result of a complete and proximal occlusion in a coronary…

…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…