Arterial Blood Gas Sampling

Circulation · ICU/Medicine · 10–20 min

Radial artery puncture for arterial blood sampling.

Indications

  • • Assess oxygenation, ventilation, acid-base
  • • Titrate ventilator

Contraindications

  • ⚠ Failed Allen's
  • ⚠ AV fistula arm
  • ⚠ Local infection
  • ⚠ Coagulopathy (relative)

Equipment

  • • Pre-heparinized ABG syringe with 22–25 G needle
  • • Antiseptic swab
  • • Gauze

Positioning

  • • As appropriate for the procedure and patient comfort.

Consent

  • • Explain indication, benefits, alternatives
  • • Explain risks & complications
  • • Obtain written/verbal consent as per SOP
  • • Document consent

Universal precautions

  • • Hand hygiene
  • • PPE — gloves, mask, eye protection
  • • Aseptic technique
  • • Sharps safety
  • • Verify patient identity & site

Step-by-step (0/6)

Tap to complete

Confirms ulnar collateral.

Immediate complications

  • ⚠ Hematoma
  • ⚠ Arterial spasm
  • ⚠ Nerve injury

Delayed complications

  • • Thrombosis

Recognition

  • • Cold hand

Initial management

  • • Pressure
  • • Warm limb

Prevention

  • • Allen's test
  • • Minimum attempts

Post-procedure observation

  • • Vitals q15min × 1h then hourly

Monitoring

  • • Site inspection
  • • Symptom review

Documentation

  • • Procedure note
  • • Consent
  • • Findings

Patient instructions

  • • Report pain, bleeding, fever, worsening symptoms

Related in WardRound

Educational bedside guide. Perform only under supervision until competent. Follow local SOPs and consent policy.

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Clinical Decisions in Seconds