Which of the following is not done before ABG:
Ans. C. Flexion of wrist* While taking ABG the wrist is generally kept in hyperextension. This is to make the vessel straight and to fix the position (because of tension in hyperextension).* Flexion will make the vessel loose and the vessel will slip easily while poking.* ABG is painful, and radial artery spasm can result in ischemia of the hand in patients with radial dominant circulation.
Allen's test
Heparin to rinse the syringe
Flexion of wrist
Poking at 45deg angle
Miscellaneous