…preferably anteroposteriorly : one anteriorly over the praecordium to the left of the sternum, the other on the back between the left scapula and the spine…

…These factors interact and vary over time. Some factors vary from second to second (e.g. degree of ischemia, parasympathetic and sympathetic tone) while others…

…Practice differs between regions and departments; a palpable ulnar pulse and a warm, well perfused hand carry more weight. Choice of vessel The radial artery…

…the visual acuity before anything else is done. The second most important is to look for signs of perforation — Seidel's sign, an irregular pupil…

…Infection or burns over the puncture site. Osteogenesis imperfecta and severe osteoporosis (relative). An inability to identify the landmarks. Choice of vein and cannula size…

…urgency varies: Object Urgency : : Button battery Immediately — leakage of fluid causes a chemical burn Two or more magnets (including in different nostrils) Immediately — pressure necrosis…

…dialysis catheter, not an ordinary triple lumen catheter). Measurement of central venous pressure and central venous oxygen saturation. Repeated blood sampling during intensive care. Exhausted…

…Relative Skin infection, herpes zoster or burns over the puncture site Relative Mechanical ventilation with a high PEEP (an increased risk of pneumothorax; ultrasound guidance…

…level of consciousness not attributable to hypercapnia, marked swallowing difficulty, vomiting. Haemodynamic instability or a life threatening arrhythmia. Undrained pneumothorax. Facial trauma, facial burns or…

…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…