…high frequency waves. The frequency of the ultrasound wave must generally be reduced in order to visualize objects located far away from the transducer. Hence…

…pillow to place under the shoulders as an alternative to a hanging head. Frenzel goggles or video Frenzel if available — small beats of nystagmus can…

…Place a field block around the abscess. 3. Make the incision along the skin tension lines and make it long enough — as a rule of…

…although the clinical importance of improved adherence remains dependent on sustained follow up and administration. Clinical indications and place in therapy Inclisiran has been approved…

…The sample volume (SV) should be placed between the leaflet tips (1–3 mm axial length of SV) and sweep speed is set to 50…

…the spectral curve and indicates how far blood travels during the flow period. VTI can be used for various volume calculations, such as calculation of…

…virtually all cases. Ventricular tachycardia causes immense strain on the ventricular myocardium, simultaneously as the cause of the arrhythmia already affects cellular function. This results…

…Syncope is particularly important as a marker of potentially severe disease. The presence of haemodynamic instability places the patient in the high risk category and…

…airway) should be established as early as possible. Airway management should not interrupt compressions for more than 5 seconds. The effect of cricoid pressure and…

…the first part of the formula (0.5 • D blood ) can be approximated to 4, meaning that Formula 2 can be rewritten as follows: Formula…

…contraction) of the ventricles. Although it may not always include a Q wave, R wave and S wave, it is still referred to as a…

…etc) of different density. The greater the difference in density, the more ultrasound waves are reflected. This explains why tissue borders appear as brighter structures…

…book with an abundance of illustrations that appeared pedagogical, despite the fact that it had not been updated for decades. As I got more involved…

…dysfunction Promotion of vascular calcification Albuminuria and proteinuria Neurohormonal activation Plasma volume expansion Myocardial remodelling and fibrosis These processes form part of the broader cardiovascular…

…in terms of morphology (appearance), durations and intervals. A rather extensive discussion is provided in order to give the reader firm knowledge of normal findings…

…referred to as a left dominant system ). In patients with right dominance the RCA supplies the atrioventricular (AV) node . In 60% of individuals, the right…

…which is by far the most common cause of ST segment elevation in any population (up to 90% of males aged 40 years or younger…

…overdose. Tumour lysis syndrome appears as an indication in older protocols but is no longer routinely recommended — alkaline urine increases the precipitation of calcium phosphate…

…identifiable underlying cause. Researchers previously believed that this form of hypertension was a physiological reaction that was necessary to maintain normal hemodynamics, hence the term…

…as well as far field currents (i.e currents generated by tissues that the electrode is not connected to). Also, external signals from electronics (cell…

…The spread of an electrical impulse is therefore directly coupled to a mechanical event; this is referred to as electromechanical coupling . The electrical conduction system…

…far the most common anatomy, occurring in 90% of all individuals. Figure 2 is also important to study, as it shows the arterial supply of…

…haemorrhage meeting the criteria for activation of the massive transfusion protocol. Plasma and platelets: in ongoing bleeding with coagulopathy, or as part of balanced transfusion…

…fear, pain, anxiety, intense emotion, the sight of blood, unpleasant sights and odors, and orthostatic stress. Situational triggers such as acute hemorrhage, cough, defecation, laugh…

…and the underlying cause must be investigated. Pain, infections, medications, fever, hypovolemia, dehydration, anemia, hyperthyroidism and myocarditis are common etiologies. Treatment of the underlying cause…

…and topical steroids Note them on the request form — they can themselves cause HPA suppression and are often the very question at issue A patient…

…prolongation of the QT interval on the surface electrocardiogram (ECG), which predisposes the myocardium to a specific form of polymorphic ventricular tachycardia (VT) known as…

…When the direction of the reentrant circuit is reversed, propagating in a clockwise direction, it results in a distinct ECG pattern designated as typical reverse…

…or another form of physiological stress, but it may also occur at rest or remain clinically silent. The underlying coronary disease may be obstructive or…

…form bundles of fibers that act as electrical cords that spread the action potential rapidly and sequentially to contractile myocardium in the atria and the…

…As the atherosclerotic plaque increases in size, it bulges into the artery lumen and causes stenosis (reduction of the artery lumen). The reduction of the…

…changes as well. In acute coronary syndromes, however, symptoms and ECG changes are manifest at rest because of the severe reduction of coronary flow caused…

…The condition has been recognized for decades, and it has been regarded as a benign form of ST segment elevation with slurring or notching at…

…medicine Definition and pathophysiology Cardiovascular disease (CVD) is the leading cause of death among women worldwide and in the United States. In the United States…

…Aortic dissection is an uncommon cause of acute chest pain but carries a particularly high mortality when diagnosis is delayed. The typical presentation is sudden…

…side effects are believed to be the cause, it is fundamental to weigh the risk of terminating drug therapy as compared with implementing an artificial…

…may be seen as signs of ischemia, which is why one must be familiar with them. In order to completely understand the different complications related…

…represents a form of arterial hyperplastic disease arising after percutaneous coronary intervention (PCI). In contemporary practice, ISR remains the most frequent cause of PCI failure…

…in as many as 15% of patients after ST segment elevation myocardial infarction (STEMI), with rates approaching 25% after anterior MI. Thrombi may form early…

…It is the most common form of secondary hypertension. Aldosterone acts principally through the mineralocorticoid receptor (MR). After entering target cells, it binds the MR…

…Rhabdomyolysis is a rare, severe form of muscle injury. The biological basis of many reported muscle symptoms remains uncertain. Randomized trials have shown muscle adverse…

…primarily due to the misuse of prescription medications and illicit substances. Currently, opioid overdose stands as a predominant etiological factor for cardiac arrest within this…

…coronary microvascular dysfunction, also contributes to the extension and severity of ischemic injury. In its most severe form, known as no reflow, structural and functional…

…emerged as the preferred biomarkers because they are extremely sensitive and specific for myocardial injury. Elevated levels of cardiac troponins is firm evidence of myocardial…

…vascular beds. Malignant hypertension represents an extreme form in which acute microvascular injury occurs, classically involving fibrinoid necrosis of small arteries in the kidneys, retina…

…or subacute. In the catastrophic form, an acute tear causes haemopericardium, tamponade, and sudden: Loss of pulse. Loss of blood pressure. Loss of consciousness. Electromechanical…

…In the majority of cases, the arrhythmia is self limiting; however, it may recur and, in some instances, persist for extended durations. As for any…

…asymptomatic, NSVT serves as a critical marker of arrhythmogenic risk, particularly in the setting of ischemic heart disease or reduced left ventricular ejection fraction (LVEF)…

…with an initial STEMI pattern has myocardial infarction as the final diagnosis. The underlying process usually involves acute thrombotic obstruction of an epicardial coronary artery…

…they generate vibrations in the surrounding air and these vibrations propagate in the form of a sound wave. If the sound waves encounter a new…

…are rarely caused by ischemia, with one notable exception. Occurrence of upsloping ST segment depressions with prominent T waves in the majority of the chest…

…not be undertaken in bouts of at least 10 minutes; shorter episodes also contribute to health. Spreading activity across the week may reduce musculoskeletal injury…

…infarction [4]. Myocardial Necrosis : The occurrence of LBBB (as a form of bifascicular block) is linked to extensive myocardial necrosis [4]. Clinical Implications and Prognosis…

…Abnormalities in the QT interval can cause serious arrhythmias and sudden cardiac death. QT prolongation can precipitate torsades de pointes, a specific form of polymorphic…

…high intensity statin therapy, and appropriate antithrombotic treatment form the broader management framework. Response to treatment should be reviewed after initiation and after each adjustment…

…distinct and uncommon form of precapillary PH. It is defined haemodynamically by precapillary PH in the absence of CTEPH, lung disease, or another explanatory cause…

…is currently considered the most frequent form of CA worldwide [15]. Clinical Presentation and Course Both AL and ATTR CA typically present as heart failure…

Calculators For details, refer to the chapter QT Duration and Corrected QT Interval. QTc Calculator Heart Rate QT Interval (in msec) Calculate QTc Values $…

…collapse Lesion specific angiographic features Residual dissection at a stent margin, impaired flow into or out of the stent, stent diameter less than 3 mm…

…from hypertrophy caused by increased loading conditions. The latter is far more common and the conditions may coexist. A significant percentage of the population has…