Which of the following is not done before ABG:
Allen's test
Heparin to rinse the syringe
Flexion of wrist
Poking at 45deg angle
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.
Miscellaneous