…in the same order every time. Skipping a step is a common reason why mixed acid base disorders are missed. The blood gas describes the…

…Palpitations, syncope or cardiac arrest–particularly during physical activity–in a young adult with T wave inversions in V1–V4, or other ECG changes (see…

…can be highly variable, particularly in females, the elderly, or patients with diabetes [4]. Associated Findings: The sudden onset of symptoms coupled with diaphoresis should…

…with symptomatic HF. The distinction is clinically useful but not absolute. Ejection fraction is a continuous variable and echocardiographic measurement has meaningful variability. Patients with…

…with early onset of heart failure is common among these individuals. The majority of the mutations are inherited in an autosomal dominant manner with variable…

…Brugada syndrome was classically defined as a monogenic, autosomal dominant channelopathy with incomplete penetrance and variable expressivity. The first and most critical genetic locus identified…

…also the most common cause of sudden cardiac death (SCD) in young individuals and during exercise. The risk of ventricular arrhythmias correlates with the degree…

…cardiovascular mortality. The condition is very common among individuals with heart failure. Notably, beta blockers actually increase chronotropic competency in patients with heart failure, despite…

…creatinine using the Chronic Kidney Disease Epidemiology Collaboration (CKD EPI) equation, incorporating relevant demographic variables; cystatin C may also be used as a filtration marker…

…CTOs are common among patients undergoing coronary angiography, with reported prevalence ranging from 18% to 52%. They frequently occur in patients with severe coronary artery…

…PCI. Type 4b MI: MI caused by stent thrombosis. Type 4c MI: MI associated with in stent restenosis. Type 5 MI: MI related to CABG…

…unknown duration : These cases are managed as chronic hyponatremia. Degree of hyponatremia P/S Na + Common effects Mild 130 125 mmol/l Cognitive disorders, vertigo…

…may precede rupture. The tear commonly develops at the interface between infarcted and viable myocardium. The incidence has fallen substantially with contemporary reperfusion, particularly primary…

…collapse in patients with right ventricular ischemia or infarction. Recognizing ECG signs of right ventricular involvement is, therefore, important. Such knowledge is valuable for most…

…endocarditis. With 2D and later 3D ultrasound, the technology has been greatly refined. Similarly, the development of transesophageal echocardiography (TEE) has been extremely valuable. Echocardiography…

…Defined by absent tracer uptake, with signal intensity comparable to background activity, typically representing infarcted tissue or non viable myocardium. Perfusion patterns and reversibility Perfusion…

…Cardiac markers and coagulation Test Reference Comment : : : High sensitivity troponin T < 14 ng/L The decision thresholds are assay specific — follow the local 0…

…severe piperacillin–tazobactam 4 g × 4 IV Exacerbation of COPD with an indication for antibiotics amoxicillin 750 mg × 3 PO 5–7 days or doxycycline…

Echocardiography Ultrasound artifacts The following artifacts are common in ultrasound imaging: The ultrasound image displays non existing structures. The ultrasound image does not display existing…

…common and essential terms used in resuscitation science, providing a foundation for understanding subsequent chapters. SCA (Sudden Cardiac Arrest) : Sudden and unexpected cardiac arrest with…

…results in thickening of the leaflets and may coexist with mitral stenosis. Idiopathic degeneration (Barlow's disease), degeneration associated with connective tissue disorders (Marfan syndrome…

Arrhythmias and arrhythmology Cardiology Definition and Pathophysiology Vasovagal syncope represents the most common form of neurally mediated syncope (NMS), a disorder of autonomic reflexes. It…

…is the most common sustained cardiac arrhythmia and a profound driver of global cardiovascular morbidity and mortality, primarily due to its association with ischemic stroke…

…many other countries, a 2:1 block will be difficult to discern because the flutter wave may fuse with the preceding T wave. Increasing the…

…and infarction Approach to patients with chest pain: differential diagnoses, evaluation and management Chest pain is one of the most common symptoms in the emergency…

…fibrillation: atrial flutter, AVNRT and AVRT (pre excitation, WPW syndrome) being the most common. Atrial fibrillation with onset during hyperthyroidism (thyrotoxicosis), alcohol overdose, thoracic surgery…

…clinical features, mechanisms, ECG & management Atrioventricular nodal reentrant tachycardia (AVNRT) is a common tachyarrhythmia observed across all age groups, from children to the elderly, and…

…dilatation Biventricular hypertrophy Simultaneous hypertrophy of the left and right ventricle is rather common. The ECG has low sensitivity with respect to detecting biventricular hypertrophy…

…However, this chapter focuses on clinical aspects of arrhythmology to provide readers with a solid understanding of common arrhythmias. Readers seeking an in depth discussion…

…vessels. The visceral layer consists of mesothelian cells, collagen and elastin and is fused with the myocardium. At the departures of the larger vessels, the…

…regular with a positive P wave in lead II, but the heart rate exceeds 100 beats per minute. Although sinus tachycardia is the most common…

…The most common serious error is dilating a vessel that turns out to be an artery — everything in the technique is designed to make sure…

…the order in which measures are taken and the principles that are common to all protocols. Children, pregnant women and patients with advanced renal failure…

…combination with new or progressive acute target organ damage. Common manifestations are hypertensive encephalopathy, intracerebral haemorrhage, acute coronary syndrome, acute left ventricular failure with pulmonary…

…Causes of tachycardia (tachyarrhythmia) with wide QRS complexes (QRS duration ≥0,12 s) : ventricular tachycardia is the most common cause and it is potentially life…

…is the most frequent supraventricular arrhythmia in patients with acute coronary syndromes (ACS) and is also a common tachyarrhythmia requiring treatment in decompensated heart failure…

…PA), also termed primary hyperaldosteronism or Conn syndrome, comprises disorders in which aldosterone secretion is inappropriately increased, relatively autonomous from angiotensin II and plasma potassium…

…ventricular necrosis is found in approximately one third of patients with inferior infarction. Extensive involvement is less common in patients with inferoposterior left ventricular infarction…

…arrests are caused by acute or chronic coronary artery disease, with the latter being the most common. The figure 80% occurs in most textbooks in…

…The ECG can show low voltage and nonspecific ST T changes. Conventional thoracic X ray sometimes reveals calcification of the pericardium. With MRI or CT…

…T wave inversions and pathological Q waves may be used to diagnose myocardial ischemia and infarction. Symptoms – Patients with acute myocardial infarction may present with…

…due to hypercalcemia Common ECG changes Shortened QT interval. Lengthened QRS duration. Bradycardia may occur. Rare ECG changes Increased QRS amplitude. Diminished T wave amplitude…

…been discussed in Introduction to Exercise ECG. The most common indications are as follows: Assessment of cardiovascular risk in screening. Detection of coronary artery disease …

…heart disease) Coronary artery disease, which is synonymous with ischemic heart disease, is the most common form of cardiovascular disease. It has been the number…

…by cells near the node. The following must be noted: There are cells with pure automaticity around the atrioventricular node. These cells are capable of…

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

…artery into the right ventricle during diastole. The most common cause of abnormal pulmonary regurgitation is pulmonary hypertension. Table 1 presents the causes of pulmonary…

…are common in myocardial ischemia and infarction. These conditions may be seen as signs of ischemia, which is why one must be familiar with them…

…or tumors. Rheumatic disease is the most common cause, in which scenario tricuspid stenosis is virtually always accompanied by aortic or mitral disease (most commonly…

…the same time, exacerbation is a clinical syndromic diagnosis, not a sufficient explanation for all acute dyspnoea in a patient with COPD. Pneumonia, heart failure…

…Syndrome Typical course Common or important causes Targeted examination : : : : Acute vestibular syndrome Acute or subacute onset, continuous dizziness lasting hours to days, often with nausea…

…can develop despite a measurable or high blood alcohol concentration, particularly in patients with marked tolerance. The most important measures in severe or complicated withdrawal…

…110 Isolated systolic hypertension ≥ 140 and < 90 Thresholds for different measurement methods Measurement technique Faulty measurement technique is the most common cause of misclassification…

…may be enough to precipitate the condition [1,2]. Delirium is common but often missed. On medical and geriatric wards a substantial proportion of older…

…scale), gives poorer control and is not recommended as the sole regimen. Common situations Situation Management : : Fasting before an investigation, type 1 Continue basal insulin…

…Oxycodone PO 5–10 mg as needed The first choice among the common opioids in renal failure Ketobemidone IV 2.5–5 mg Oral bioavailability…

…titration is possible. Maximum dose: 21 mg/h iv. Common therapeutic dose: 4 6 mg/h. Clevidipine is administered in lipid emulsion (containing soy, egg)…

…of extracellular calcium in the myocardial and peripheral vascular smooth muscle cell membranes, thus inhibiting the contraction of smooth muscle cells. As compared with nitroprusside…

…arterioles and veins via generation of cyclic GMP, which then activates calcium sensitive potassium channels in the cell membrane. Time to onset of action : 1…

…AF is common following the successful ablation of typical flutter. Furthermore, typical flutter frequently emerges in patients undergoing pharmacological treatment for AF with class IC…