…acidic environment inactivates the anaesthetic. Place a field block in healthy skin around the abscess instead of injecting into it, and expect the procedure to…

…treatment. Diagnostic drainage in suspected purulent pericarditis, tuberculosis or malignancy. Tamponade is a clinical diagnosis supported by echocardiography: Finding Comment : : Hypotension, distended neck veins, muffled…

…equipment A laryngeal mask of the correct size plus one size above and one below. Second generation masks with a separate drainage channel (i gel…

…which is the commonest cause of recurrence. Indications Condition Procedure : : Acute paronychia with fluctuance or visible pus Incision and drainage Acute paronychia without pus formation…

…and the drainage is stopped for coughing, chest pain, or when the volume limit is reached. Indications Diagnostic aspiration: a new pleural effusion of unclear…

…a needle due to reduced risk of injury. Thoracostomy should be performed promptly following needle decompression. Thoracostomy with drainage typically serves as a stabilizing intervention…

…is because it does not ensure complete drainage of the pericardium, and needles or catheters are at risk of bending or damage during chest compressions…

…the threshold, but the threshold varies between regions. Infection of the skin over the puncture site. Marked haemodynamic instability — stabilise the patient first. CT before…

…for the skin wheal and 21 G for the deeper layers. Diagnostic tap: 21–22 G needle, 20 mL and 50 mL syringes. Therapeutic drainage:…

…impairment or a large residual volume. A need for accurate measurement of urine output in a critically ill patient. Perioperatively and postoperatively in longer procedures…