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ArticleECG
Pediatric aspects of ECG leads & anatomy

…of ECGs in pediatric patients is slightly different from adults, due to obvious anatomical differences. There are, however, no differences regarding the ECG grid. As…

ArticleEchocardiography
Pericardial Effusion & Cardiac tamponade

…may affect hemodynamics and the underlying cause is often serious (e. g. malignancy, amyloidosis). In case of suspicion of pericardial disease, in the first place…

ArticleProcedurer
Lumbar puncture

…often quoted as the threshold, but the threshold varies between regions. Infection of the skin over the puncture site. Marked haemodynamic instability — stabilise the patient…

ArticleProcedurer
Transcutaneous and transvenous pacing

…cause burning pain. 2. Position the pads, preferably anteroposteriorly : one anteriorly over the praecordium to the left of the sternum, the other on the back…

ArticleProcedurer
Reduction of dislocations

…determine afterwards whether a nerve injury was caused by the injury or by the treatment. Indications A clinically or radiologically confirmed dislocation of the shoulder…

ArticleEchocardiography
Doppler effect and Doppler echocardiography

…Although only a fraction of the sound waves are reflected back to the transducer, the billions of erythrocytes in the blood will collectively generate enough…

ArticleEchocardiography
Performing Echocardiographic Examinations

…The operator should have an elbow rest, and also avoid bending the back during the examination. Work related musculoskeletal disorders are a common cause of…

ArticleMyocardial ischemia and infarction
Posterior acute myocardial infarction (STEMI)

…inferobasal) transmural ischemia causes reciprocal ST segment depressions in V1–V3 (occasionally V4). Leads V7–V9 must be placed to reveal the ST segment elevations…

ArticleEchocardiography
Tissue Doppler (Tissue Velocity Imaging)

…of myocardial motion is significantly lower than the velocity of blood flow. Therefore, ultrasound waves reflected from myocardium will have a lower Doppler shift, as…

ArticleProcedurer
Eye examination and corneal foreign body

…Evert the upper eyelid. Ask the patient to look down. Grasp the eyelashes, press gently downwards on the upper border of the tarsal plate with…

ArticleEchocardiography
The ultrasound transducer

…sent back to the ultrasound machine, where the electrical signal is interpreted and translated into an image (Figure 3). Figure 3. Piezoelectric crystals. As can…

ArticleEchocardiography
Technical aspects of the ultrasound image

…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…

ArticleEchocardiography
Artifacts in ultrasound imaging

…from the main beam. As the ultrasound beam sweeps back and forth, multiple side lobe artifacts can be generated on both sides of the true…

ArticleEchocardiography
Tricuspid regurgitation (TR/TI)

…Echocardiography is the preferred method for diagnosing tricuspid regurgitation. Causes of tricuspid regurgitation The most common causes of tricuspid regurgitation are as follows: Right ventricular…

ArticleProcedurer
Endotracheal intubation

…shaped before induction , a syringe for the cuff, a cuff manometer. A laryngeal mask of the correct size as a rescue airway, and surgical airway…

ArticleProcedurer
Spirometry

…removed the previous minimum requirement of 6 seconds in adults and 3 seconds in children, but many laboratories and spirometers still use it as a…

ArticleEchocardiography
Pulsed Wave Doppler

…the description of blood flow. This is illustrated in Figure 3, which depicts a clock observed 5, 3 and 2 times during one cycle. As…

ArticleReferensvärden
Blood pressure

…is the most common cause of misclassification. Five minutes' seated rest, back and arm supported, legs uncrossed, no conversation Cuff width ≥ 40% of the upper…

ArticleCardiology
Adenosine for tachyarrhythmias (AVNRT, AVRT, NCT)

…The half life of adenosine is 8 seconds. Adverse effects are therefore very brief. Indications Paroxysmal supraventricular tachycardia (PSVT), which includes forms that are caused…

ArticleEchocardiography
Aortic regurgitation

…The most common causes of acute aortic regurgitation are aortic dissection , endocarditis and trauma . Chronic aortic regurgitation If aortic regurgitation develops gradually, then the ventricle…

ArticleEchocardiography
Pulmonary regurgitation

…The regurgitation results in blood flowing back from the pulmonary artery into the right ventricle during diastole. The most common cause of abnormal pulmonary regurgitation…

ArticleProcedurer
Casting and immobilisation

…commonest cause of pressure sores. 4. Dip the plaster in tepid water and squeeze out the excess without wringing. 5. Put the slab in place…