60+ träffar

ArticleProcedurer
Pericardiocentesis

…the only absolute indication, and always urgent. A large pericardial effusion with symptoms despite medical treatment. Diagnostic drainage in suspected purulent pericarditis, tuberculosis or malignancy…

ArticleEchocardiography
Color Doppler

…Large variations in velocities recorded within a single sample volume indicate turbulent flow; the ultrasound machine is programmed to depict such flows with green color…

ArticleEchocardiography
Left Ventricular Function

…fraction of left ventricular volume ejected per beat and of ventricular end diastolic and residual volumes. Experimental and clinical observations with a precordial dilution technic…

ArticleCPR
Cardiac arrest due to pneumothorax

…in healthy individuals, a tension pneumothorax arises when the volume of air is substantial enough to compress the superior and inferior vena cava, impeding or…

ArticleProcedurer
Arterial line

…example during mechanical ventilation or severe metabolic derangement. Major surgery with expected blood loss or large volume shifts. Patients in whom non invasive measurement is…

ArticleProcedurer
Urinary catheterisation

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

ArticleProcedurer
Pleural aspiration and chest drain

…sits leaning forward with the arms on a table for diagnostic and therapeutic aspiration; for drain insertion the supine position is used with the arm…

ArticleProcedurer
Bone marrow aspiration and biopsy

…of a millilitre, at most about 0.5 mL. A larger volume draws in peripheral blood and dilutes the specimen. Marrow clots within seconds; the…

ArticleEchocardiography
Relaxation of the left ventricle

…Also, the load on individual fibers is positively correlated with left ventricular volume, meaning that load on the muscle fibers increases as ventricular volume increases…

ArticleProcedurer
Paracentesis

…rarely used in large volume ascites. Diagnostic paracentesis 1. Scan the left lower quadrant. Confirm at least 2–3 cm of free fluid depth with…

ArticleReferensvärden
Echocardiography

…area < 0.05 0.05 0.59 0.59 Qualitative parameters Mild regurgitation Moderate regurgitation Severe regurgitation Jet area small variable large if central…

ArticleProcedurer
Spirometry

…spirometer with a daily volume check (a 3 litre calibration syringe), a disposable mouthpiece with a bacterial filter, a nose clip, a chair with armrests…

ArticleProcedurer
Wound suturing

…With a glass injury: consider radiography, since glass is usually visible on plain films. Irrigation fluid: a copious volume of drinking quality tap water or…

ArticleEchocardiography
Pericardial Effusion & Cardiac tamponade

…the volumes become too large. Thus, the pericardium is considered to contribute to the fact that the ventricles are not overfilled in acute volume loads…

ArticleCPR
The 3-phase model of sudden cardiac arrest

…is possible because mitochondria occupy nearly 30% of the myocardial cell volume, which enables the generation of such large amounts of ATP (Page et al)…

ArticleEchocardiography
Aortic regurgitation

…compensates by increasing cardiac output (CO); this is achieved by increasing heart rate and producing larger stroke volumes. Failure to increase cardiac output sufficiently will…

ArticleCPR
Cardiac tamponade causing cardiac arrest

…a tamponade, chest compressions have limited efficacy. Furthermore, administering large tidal volumes might inadvertently elevate intrathoracic pressures, additionally compromising venous return. Draining the pericardium, therefore…

ArticleCPR
Traumatic cardiac arrest

…shock is common in both penetrating and blunt force trauma. Loss of blood volume renders chest compressions futile. Hypoxia : Hypoxia is common in traumatic cardiac…

ArticleEchocardiography
Tricuspid regurgitation (TR/TI)

…experienced echocardiographer. Three dimensional (3D) echocardiography should be considered in laboratories with expertise; 3D imaging is superior to 2D for estimating right ventricular volumes. Cardiac…

ArticleEchocardiography
Left ventricular diastolic function

…left atrium and the ventricle diminishes, and the passive filling subsides. The greater the ventricular compliance, the larger the volume of blood that flows fr

ArticleProcedurer
Laryngeal mask and difficult airway

…one, a cuff manometer. A videolaryngoscope with both a Macintosh like and a hyperangulated blade, and a stylet shaped to match the hyperangulated blade. A…

ArticleProcedurer
Soft tissue corticosteroid injection

…post injection flare. Lidocaine 10 mg/mL without adrenaline is used; larger volumes are needed subacromially and trochanterically to distribute the dose within the bursa

ArticleCPR
Epidemiological aspects of cardiac arrest

CPR Data sources for monitoring cardiac arrest and resuscitation There are currently several large registries monitoring resuscitation practices. Some data sources also monitor sudden cardiac…

ArticleReferensvärden
ECG parameters

…mm/s with 1 mV = 10 mm. At 50 mm/s a small square (1 mm) corresponds to 20 ms and a large square…

ArticleKunskapsbas
🟠 Pulmonary valve

…colour Doppler small,, < 10 mm length, narrow origin variable large, wide origin Ratio pulmonic to aortic flow normal variable significantly increased References 1. Zoghbi…

ArticleCPR
Sudden cardiac arrest: Case 2

…tachycardia (VT). ECG 2 . VT progressing to ventricular fibrillation. ECG 3 . Ventricular fibrillation, coarse (large amplitudes). ECG 4 . Ventricular fibrillation. ECG 5 . Ventricular fibrillation, fine …

ArticleProcedurer
Ambulatory blood pressure monitoring and Holter ECG

…fibrillation with a rapid and irregular ventricular rate (oscillometric measurement becomes unreliable), lymphoedema or a dialysis fistula in both arms, an arm circumference too large…

ArticleReferensvärden
Anthropometric measurements

…charts should be used. Waist circumference Measure the waist between the lowest rib and the iliac crest, at the end of expiration, with the tape…

ArticleProcedurer
Central venous catheter

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

ArticleProcedurer
Gastric lavage and activated charcoal

…within about 1 hour (a liquid preparation) or 2 hours (tablets). With very large quantities of an extremely toxic preparation, lavage can be discussed later…

ArticleReferensvärden
Renal parameters

…Estimating renal function Formula Used for : : CKD EPI 2021 (creatinine) The first choice for eGFR in adults Cystatin C based eGFR With an atypical muscle…

ArticleGastroenterologi & hepatologi
Upper gastrointestinal bleeding: quick reference

…coffee ground vomiting or melaena. Haematochezia can occur in massive upper bleeding with rapid intestinal transit. Coffee ground vomiting is less specific than fresh haematemesis…

ArticleKunskapsbas
🟠 HCM Risk-SCD Calculator

…cardiac death (SCD) in young individuals and during exercise. The risk of ventricular arrhythmias correlates with the degree of hypertrophy, the extent of ventricular fibrosis…

ArticleKunskapsbas
🟠 SYNTAX Score II

…profile. Predicting Outcomes : It predicts 10 year mortality and 5 year major adverse cardiac events (MACE) with greater accuracy than the original SYNTAX Score. Heart…

ArticleContinous medical discussion: the ECG blog
A new ECG biomarker for sudden cardiac death

…classifier with no human feature extraction, in principle delivering LVEF's practical advantages with better discrimination. The missing ingredient has been a training set large…

ArticleMyocardial ischemia and infarction
Periprocedural Myocardial Infarction After PCI and CABG

…flow may cause rapid deterioration when a large myocardial territory is jeopardized. Cardiovascular collapse after failed PCI is more likely with extensive myocardium at risk…