A patient had a massive bleeding during surgery. Which sized cannula should be used?
Correct Answer: 16 Gauge
Description: Ans. a. 16 Gauge (Ref: Bailey 25/e p291)In a patient with massive bleeding, there is always a risk of patient going into shock and widest bore cannula available showed be used for cannulation. The ACLS guidelines recommend securing intravenous access with two large-bore cannulae (14-16G) in a patient needing resuscitation."Primary surrey in Trauma: These include blood samples for full blood count (FBC), coagidation studies, plasma chemistry (urea and electrolytes and, sometimes, toxicology or other case-specific indices), transfusion screening (group and cross-match, etc,), 12-lead electrocardiography (ECG) monitoring and pulse oximetry, if available. The blood can be taken at the same time as securing intravenous access with two large-bore cannulae (14--16G)."- Bailey 25/e p29"The sizes of needle-based instruments (such as Venflons and needles themselves) are measured in 'Gauge' (i.e. how many can be fitted into a tube of a fixed diameter). In Gauge, larger numbers, mean smaller diameter lumens. Catheters use the 'French 'system. This is the circumference of the tube in millimeters, e.g. a 30 F catheter has a circumference of 30 mm. In French, larger numbers therefore mean larger diameter lumens. "GaugeColor codeExternal DiameterLengthFlow Rate14GOrange2.1 mm45 mm240 ml/min16GGrey1.8 mm45 mm180 ml/min18GGreen1.3 mm32/45 mm90 ml/min20GPink1.1 mm32 mm60 ml/min22GBlue0.9 mm25 mm36 ml/min24GYellow0.7 mm19 mm20 ml/min26GViolet0.6 mm19 mm13 ml/min
Category:
Surgery
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now