Page 28 - Critical Care Notes

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BASICS

Intra-Arterial Monitoring
An arterial line (A-line) is used if frequent blood pressure and arterial blood gas
determinations are needed. It is especially useful
■ After surgery.
■ For patients with unstable vital signs.
■ For patients experiencing hypoxemia.
Perform Allen’s test prior to insertion. Elevate the patient’s hand with his or
her fists clenched. Release pressure over only the ulnar artery. Color returns to
the hand within 6 sec if the ulnar artery is patent and adequate collateral blood
flow present.

Compressing the radial Observing for pallor Releasing pressure and
and ulnar arteries observing for return of
normal color

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