…tree after selective intracoronary contrast injection under fluoroscopy. The procedure is performed by advancing guidewires and diagnostic catheters from a percutaneous arterial access site to…

…different position or a different vessel. Choice of site Vessel Advantages Disadvantages : : : Internal jugular vein (right) Best ultrasound conditions, a straight course to the superior…

…a fracture in the cribriform plate into the cranium Absolute Corrosive injury of the oesophagus or stomach after ingestion of a caustic substance Absolute Choanal…

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

…should be utilized. The cannula is inserted into the 4th or 5th intercostal space along the anterior axillary line. Thoracostomy This method is generally deemed…

…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…

…first. Procedure Choice of insertion site The left lower quadrant is the first choice : the abdominal wall is thinner there than on the right, and…

…larger , since a mask that is too small leaks and gives a poorer seal. Procedure Insertion of the laryngeal mask 1. Check the mask, remove…

…mouthful of water and hold it. Advance the electrode at the very moment the patient swallows — the pharyngeal muscles then guide the tip into the…

…aortic balloon pump. Assessment of stroke volume variation as part of fluid management. Contraindications Infection, burn or trauma over the insertion site. Insufficient collateral circulation…