This study seeks to determine if cryoanalgesia in the form of ice application could be an effective analgesic when applied before arterial puncture.

Inclusion Criteria:

• subjects ≥ 18 years old referred to the pulmonary function laboratory with a physician order for an arterial blood gas test were sought to complete the study

Exclusion Criteria:

• cold, bluish hands and fingers
• diagnosis of Raynaud's syndrome or scleroderma/CREST syndrome
• history or signs of dementia, confusion, or cognitive impairment
• blindness
• patients not fluent in the English language
• non-palpable radial pulse in the wrist (necessitating brachial puncture)