16 träffar

ArticleProcedurer
Lumbar puncture

…cutting needle (Quincke) only when an atraumatic needle is unavailable or cannot be advanced. An introducer for the atraumatic needle — it is too soft to…

ArticleEchocardiography
Artifacts in ultrasound imaging

…times between dense structures ( i.e structures with high echogenicity). For each reflection, a portion of the sound waves return to the transducer and produce…

ArticleECG
Interpretation of Pacemaker ECG

…However, most clinicians who encounter patients with pacemakers only have access to conventional surface ECGs. Being able to assess pacemaker function and perform troubleshooting should…

ArticleEchocardiography
Physics of ultrasound

…vibrations propagate in the form of a sound wave. If the sound waves encounter a new medium, some sound waves will be reflected while others…