…pressure suggests a low stroke volume Capillary refill < 3 s A simple and validated marker of perfusion Lactate < 1.6 mmol/L Clearance…

…hypertrophy and cardiomyopathy. Numerous formulas have been developed to approximate ventricular mass. Most formulas are simple mathematical equations, included in all ultrasound systems, and assume…

…understand echocardiography. In clinical practice, the investigator performs simple measurements and Doppler recordings, which the ultrasound machine uses to calculate various hemodynamic parameters. The Doppler…

…Brugada syndrome. This disorder is easy to diagnose with a simple blood test and the ST segment elevations resolve after normalization of potassium levels. Brugada…

…in the emergency department with simple equipment. Two principles determine the outcome: the first attempt is the best attempt , and a button battery is an…

…and collapsed veins mean that the fine needle is in addition the only one that will go in. The rule that saves time is simple…

…report. A shave biopsy of a pigmented lesion that turns out to be a melanoma can make the Breslow thickness unmeasurable and staging therefore impossible…

Cardiology Coronary Atherosclerosis Coronary atherosclerosis is a chronic, progressive, and highly complex lipid driven inflammatory disease of the arterial intima that serves as the fundamental…

…The reason for this is simple. For example, if there is acute ischemia located in the anterior wall and there is ST segment elevation in…

…than a simple clearance effect. Treatment also affects interpretation. Angiotensin receptor–neprilysin inhibitors may increase BNP concentrations, although the effect is not universal and may…

…In clinical practice, this is often performed by simply placing the electrodes to lead V4, V5 and V6 on the back. One might wonder what…

…and the only thing that proves otherwise is the synovial fluid. The aspiration is technically simple — what determines the outcome is that it is done…

…elevation myocardial infarction (STEMI). This may not always be simple, because both conditions bring about severe chest pain and ST elevations on the ECG. However…

…expand (relax) and refill with blood. Although diastole may appear as a simple and passive process, it is actually a complicated and fundamental aspect of…

…speed , and direction . The underlying mathematical principles are simple and important to understand. Figure 2 illustrates the wavelength and amplitude of sine curves. Figure 2…

…The explanation for this is simple: transmural ischemia is due to a complete and proximal artery occlusion and such occlusions must be managed with immediate…

… the patient can eat and talk. Flows above 6 L/min dry the mucosa without delivering more oxygen Simple face mask 5–10 L/min…

…one making it simple In the thrilling and ever evolving field of medicine, a question echoes in the hallways of hospitals, universities, and medical institutions…

…The treatment looks simple — bicarbonate and a look at the urine dipstick — but it fails routinely for one single reason: without normal potassium the urine…

…A simple check is to ask the patient to recite the months of the year backwards. A normal result does not exclude delirium, however, and…

…Ejection fraction is simple to calculate; if the left ventricle contains 100 ml of blood at the end of diastole and 40 ml is pumped…

…the principle of ultrasound imaging is simple: sound waves are sent into the tissue and the reflected waves are used to create an image of…

…clearest area in which Swedish practice differs between hospitals , and the local care programme applies. In practice the cooling device is set to a target…

…In contrast, dilated, light unresponsive pupils are indicative of cerebral anoxia or brain death and constitute an adverse prognostic sign. Notably, the presence of dilated…

…Abnormal A compensated simple disorder, or two opposing primary disorders It is therefore not enough to ask which of the pCO₂ and the HCO₃ deviates…

…find it difficult to differentiate between Mobitz type 1 and Mobitz type 2. A very simple rule of thumb can be applied to do this…

…complex is wide simply because the ectopic impulses that cause these rhythms spread partially or entirely outside of the ventricular conduction system, and thus the…

…in properly selected patients. Tenecteplase 0.25 mg/kg is a safe and effective alternative to alteplase and is simpler to administer, since the whole…

…a self taken vaginal sample without a speculum. Routine gynaecological examination of asymptomatic women has not been shown to improve outcomes and is not part…

…presented in the parenthesis). Values without confidence interval are simply the 98 th percentile (i.e the upper reference limit). Age <1 day 1–3…

…tachycardia during physical activity, all tachycardias should be considered pathological and the task is to clarify the cause of the tachycardia. The cause may range…

…presented in the parenthesis). Values without confidence interval are simply the 98 th percentile (i.e the upper reference limit). Age <1 day 1–3…

…artery forceps. Sample tubes according to the table below, and blood culture bottles. Suction and oxygen to hand. The patient sits leaning forward with the…

…effectively than simply increasing the dose of a single drug. They may also permit lower doses of each component, potentially limiting adverse effects and facilitating…

…with acute pancreatitis. Evaluation and physical examination Evaluation should establish: The triglyceride concentration and whether the sample was fasting or non fasting. The presence of…

…myocardium , myocardium, or simply myocardial cell, refer to this cell type, and these terms are used interchangeably. Cardiac cell architecture In contrast to skeletal muscle…

…and peripheral artery disease. Prognosis is generally worse when diabetes coexists with these conditions. However, the cardiovascular effects of SGLT2 inhibitors are not explained simply…

…include: Sweating Nausea and vomiting Anxiety A sense of impending doom When STEMI begins during exertion, the symptoms generally do not resolve simply with cessation…

…subdivided into three layers: the inner lining ( endocardium ), a thick muscle layer ( myocardium ) and an outer lining ( epicardium ). The myocardium is the thick muscle layer…

…recommended ECG criteria (e.g. criteria for acute myocardial infarction) have been derived and validated using the 12 lead ECG. The 12 lead ECG displays…

Arrhythmias and arrhythmology ECG Sinus tachycardia: causes, ECG, normal variants & pathological variants Sinus tachycardia is the most common tachyarrhythmia (tachycardia). Sinus tachycardia is the result…

Arrhythmias and arrhythmology ECG Aberrant ventricular conduction (aberrancy, aberration) Aberrant conduction is not a mechanism of arrhythmia; it is a ventricular conduction disturbance . It is…

…interval for the heart rate, and the resulting QT interval is referred to as corrected QT interval, or simply QTc interval. The primary hazard lies…

…absolute and relative risk may be confused by the previous paragraph. The absolute risk of an event (such as sudden cardiac arrest) is simply the…

…commonly referred to simply as atrial tachycardia or atrial rhythm, depending on the ventricular response. The ECG in ectopic atrial rhythm and atrial tachycardia A…

…is a chronic, inflammatory disease of the arterial wall in which lipid accumulation, vascular cell dysfunction, immune cell recruitment, extracellular matrix remodelling, and thrombosis interact…

…not simply to establish whether the patient has ACS. It is to determine whether the patient is clinically unstable, identify life threatening diagnoses rapidly, and…

…left shows many sample volumes within a Doppler sector. The picture on the right shows color Doppler located across the mitral valve and the left…

…changes is simply to enable the cardiopulmonary system to increase its delivery of oxygen to skeletal muscle and myocardium. The oxygen consumption – and thus oxygen…

…π × radius 2 , where radius = diameter/2 ), and velocity is measured by means of Doppler (Figure 1). Figure 1. Calculating flow through a cylinder…

…This is particularly important in STE ACS (STEMI) and the following parameters on the ECG are assessed: Normalization (return) of ST segment elevations Rapid T…

…which includes everything from ultrasound knobology and emergency procedures to practice guidelines for emergency medicine (and prehospital medicine). This is high quality medical education simply…

…positive waves are referred to as R waves. The first positive wave is simply an "R wave" (R). The second positive wave is called "R…

…The sample volume is depicted with two lines perpendicular to the Doppler line (Figure 2). Figure 2. Location of sample volume (SV) and the resulting…

Conduction defects ECG Intraventricular conduction delay (defect): constellations of bundle branch blocks and fascicular blocks (hemiblocks) This chapter discusses intraventricular conduction delays (defects), which are…

…attach cardiac monitoring, secure intravenous access and record an ECG. 2. Confirm the potassium with a repeat sample, but do not delay treatment when there…

…in the left lower quadrant lateral to the rectus sheath, and a cell count plus albumin on the sample. Indications Diagnostic paracentesis: Newly detected ascites —…

…few millilitres at the subsequent samplings so that residual drug does not contaminate the sample. 6. Take cortisol at 30 minutes and at 60 minutes …

…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…

…difference between zooming in and shifting focus is that the zoom encloses a specific region of the image, whereas shifting focus simply adjusts the location…