Question 77 · LEK · Vascular access
A 32-year-old male was transported to the emergency department with the signs of progressive hypovolemic shock. The patient demands quick fluid replacement. Which access and which cannula should be chosen?
- A. central access, 22 G cannula of 30 cm in length.
- B. central access, 20 G cannula of 21 cm in length.
- C. peripheral access, 18 G cannula of 5.0 cm in length.
- D. peripheral access, 16 G cannula of 5.0 cm in length.
- E. intraosseous access, 20 G cannula of 8.0 cm in length.
Hint
Apply Poiseuille's law: flow rises with the fourth power of the radius and falls as the catheter gets longer.
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