…or an intracranial aneurysm Contact the responsible specialist An aortic aneurysm 6 cm Relative — avoid forced manoeuvres An ongoing respiratory infection with a risk of…

…Capnography refers to the measurement of end tidal carbon dioxide (ETCO 2 ) in the respiratory system. ETCO 2 is the partial pressure of carbon dioxide …

…on a combination of clinical findings, oxygenation and objective measurement of airflow. International thresholds vary somewhat, but a PEF of 50 percent or less together…

…gas is needed mainly when concomitant respiratory failure or an exact assessment of oxygenation requires it [3]. Calculation of osmolality Use the same formula throughout…

…of the chosen finding — measurement, photograph or video. 3. Give atropine 0.5 mg intravenously (alternatively glycopyrronium 0.2 mg) to reduce the risk of…

…A respiratory rate of at least 22/min, increased work of breathing, a new oxygen requirement, a saturation below 93 per cent on air, or…

…level of consciousness Coma Marked drowsiness, for example a Glasgow Coma Scale below 8 Vomiting together with clear neurological impairment Respiratory failure or respiratory arrest…

…the expected course and the possibility of rapid reversal with an antidote. Intubation is recommended for neurological, respiratory or haemodynamic failure that cannot be corrected…

…specific 99th percentile upper reference limit. It is classified as acute when serial measurements demonstrate a rise and/or fall. A stable elevation indicates chronic…

…for diagnosing CAD in stable patients with: Low clinical likelihood or no previous diagnosis of CAD Characteristics suggesting that good quality imaging is achievable It…

…or ambulatory pressure. Masked hypertension: office pressure below the hypertension threshold but hypertensive home or ambulatory pressure. Office measurements provide only a limited representation of…

…across the mitral valve using pulsed Doppler. Estimating left ventricular filling pressure via e' . Measurement of deceleration time (DT) . Diastolic function can be estimated from…

…and parasympathetic influences; sympathetic stimulation leads to vasoconstriction through the release of norepinephrine, while parasympathetic activation can cause vasodilation via acetylcholine release. These mechanisms collectively…

…with its most common waveforms. Important intervals and points of measurement are depicted. ECG interpretation requires knowledge of these waves and intervals. The P wave…

…high Lp(a) level may lead to substantial underestimation of cardiovascular risk. Conversely, Lp(a) measurement provides limited additional reclassification beyond currently recommended global risk…

…or supranormal ejection fraction , despite manifest heart failure and severe symptoms. These individuals exhibit pronounced hypertrophy, resulting in a reduction of ventricular volume and subsequently…

…25% Normal FS, 2D measurement 18% Advantages of fractional shortening If ventricular geometry is normal and there are no regional wall motion abnormalities, then fractional…

…this chapter, you will learn the physiological basis of all ECG waves and how to determine whether the ECG is normal or abnormal. Although heart…

…valves. Importantly, in the setting of valvular stenosis or regurgitation, the proximal velocity (v 1 ) is very small compared to the distal velocity (v 2 )…

…measurement in evaluating aortic root morphology. Age stratified formulas help determine expected normal values based on body surface area (BSA), aiding in the diagnosis of…

…than for office measurement. Classification of office blood pressure Category Systolic Diastolic : : : : : Optimal < 120 and < 80 Normal 120–129 and/or 80–84…

…plasmapheresis or other extracorporeal therapy (requires a large bore dialysis catheter, not an ordinary triple lumen catheter). Measurement of central venous pressure and central venous…

…LVOT to improve the accuracy of the measurement. Flow velocity in LVOT : Velocity is measured in apical four chamber view (4C) or five chamber view …

…with a braked, workload controlled resistance; 12 lead ECG with continuous recording; automated or manual blood pressure measurement. Resuscitation trolley with defibrillator, oxygen, suction and…

…e.g left ventricular diameter, are evaluated in several views in order to assess the reliability and reproducibility of the measurements. The parasternal and apical…

…risk of tetany and seizures. Anuria or established renal failure. Without urine production there is no urine to alkalinise, and the sodium and volume load…

…in oedema and ascites, and in people under 18 years of age, where iso BMI or percentile charts should be used. Waist circumference Measure the…

…checked with a capillary or venous measurement [5]. Treatment The awake patient who can swallow safely Give 15 to 20 g of rapid acting carbohydrate…

…be questioned specifically about neurological symptoms during the preceding 6 months. Those with symptoms suggestive of TIA or stroke require neurological consultation and, when appropriate…

…quantify the ratio of pulmonary blood flow (Qp) to systemic blood flow (Qs). This measurement is pivotal in diagnosing and managing congenital or acquired cardiac…

…How to measure the QT interval Measurement of the QT interval may be difficult due to T wave changes. Causes of prolonged QTc duration Antiarrhythmics …

…cardiovascular societies, defines HF as a clinical syndrome corroborated by elevated natriuretic peptide levels and/or objective evidence of pulmonary or systemic congestion [3] . Within…

…types of heart failure: HFPEF , HFmrEF and HFREF . This classification is based primarily on the measurement of left ventricular ejection fraction (LVEF). The majority of…

…types of heart failure: HFPEF , HFmrEF and HFREF . This classification is based primarily on the measurement of left ventricular ejection fraction (LVEF). The majority of…

…the LVEF measurement is reliable. Nevertheless, these findings increase diagnostic confidence. The presence of symptoms alone is insufficient. Anaemia and pulmonary, renal, thyroid or hepatic…

…since the speed of ultrasound is constant in the body. The investigator specifies where the measurement should be performed by moving the sample volume (SV…

…myelodysplastic syndrome or myeloproliferative neoplasm. Work up and staging of lymphoma and myeloma. Suspected bone marrow metastasis. Assessment of treatment response and measurement of residual…

…primarily in the context of suspected acute coronary syndrome and acute myocardial ischaemia. Patients may present with acute chest pain or chest pain equivalent symptoms…

…area of the LVOT, as illustrated in Figure 1. Figure 1. Calculation of stroke volume in the LVOT, using pulsed wave Doppler and measurement of…

…still and lowered at each measurement, and not to talk. Otherwise ordinary activities, including work. No showering or bathing. A diary of going to bed…

Echocardiography Tissue Doppler (Tissue Velocity Imaging) Previous chapters on Doppler imaging have all focused on measurements of blood flow. However, the Doppler effect can also…

…incorrect blood pressure measurement must be corrected before treatment is intensified [1,2]. The evidence that any particular intravenous drug improves mortality or long term…

…may be falsely normal because of medial sclerosis — in that case add toe pressure measurement. Absolute: ABI < 0.5 or toe pressure < 30…

…variable and echocardiographic measurement has meaningful variability. Patients with LVEF 40% have substantial morbidity and mortality, despite often having a greater burden of cardiovascular and…

…enabling depolarization and repolarization, and between cells via gap junctions, facilitating the propagation of depolarization across the cells. Electrical potential differences arise as the electrical…

…in haematological malignancy. Investigation of dementia with biomarkers (amyloid, tau, phospho tau). Measurement of the opening pressure in suspected idiopathic intracranial hypertension. Therapeutic drainage in…

…retention. Chronic urinary retention with renal impairment or a large residual volume. A need for accurate measurement of urine output in a critically ill patient…

…through the orifice itself. This implies that PISA can be used to quantify regurgitation volume. In the case of mitral regurgitation (MR), the regurgitant area…

…or dialysis DOACs are not recommended. Warfarin after individual assessment Rule of thumb for the monitoring interval: eGFR divided by 10 gives the number of…

…or large volume shifts. Patients in whom non invasive measurement is unreliable: marked obesity, pronounced vasoconstriction, arrhythmia, intra aortic balloon pump. Assessment of stroke volume…

…without spontaneous breathing, passive leg raising with an increase in stroke volume 10%, or inferior vena cava variability . In the absence of responsiveness, fluid does…

…wide or narrow complex tachycardia in which the mechanism needs to be documented before referral to an arrhythmia unit. Assessment of the effect of adenosine…

…contractility of hypothermia are not tolerated. A decision to withhold further life sustaining treatment. Preparation and equipment Continuous core temperature measurement. An oesophageal probe or…

…ECG Initial hs cTn measurement Continuous cardiac monitoring The source material does not provide a detailed list of physical examination findings or a specific examination…

…U waves that are fused with the T wave should be included in the measurement. This may result in an overestimation of the QT interval…

…apply to the anti inflammatory effect. They say nothing about the mineralocorticoid effect or about suppression of the HPA axis, where a long half life…

…growth factor. Episodes of headache, palpitations, sweating and pallor that may suggest phaeochromocytoma. Systemic sclerosis, kidney disease, autoimmune disease or previous thrombotic microangiopathy. Antidepressants can…

…a high risk of hypoglycaemia 8–12 mmol/L The critically ill patient in intensive care According to the local protocol Avoid tight targets in…

…consideration of treatable contributors, such as underlying comorbidities, supervised muscle strengthening physiotherapy, exercise, and coordination and balance training. Orthostatic Blood Pressure Measurement Before starting or…

…pressure measurement; White coat hypertension; Poor adherence or persistence with prescribed therapy; Inadequate dosing; An inappropriate diuretic for kidney function; Excess dietary sodium and volume…