Anaesthesiology · Emergency Medicine

Comprehensive Difficult IV Access Score calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Veins that can be seen

Veins that can be felt

Earlier intravenous access

Clinical urgency

In an emergency department this follows the emergency severity index. Elsewhere it follows how urgent the condition is, including stroke, coronary syndrome, trauma, the admitting diagnosis, the medicine, the length of treatment, or a restricted limb.

Result

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Clinical inputs

Veins that can be seen
Veins that can be felt
Earlier intravenous access
Clinical urgency

Primary source

Bell JA, Campos C, Moureau N. Validation and Reliability of the Comprehensive Difficult IV Access Scoring Tool. Int J Nurs Health Care Res. DOI: 10.29011/2688-9501.101414. Figure 1 gives 0, 1, or 2 points for veins that can be seen, veins that can be felt, earlier access difficulty, and clinical urgency. The total runs from 0 to 8. The figure ranks 0–3 as low, 4–5 as medium, and 6–8 as high. In the inter-rater exercise a designed total of 5 was moderate difficulty, with a suggestion to consider ultrasound, and an average of 7 was read as high risk. (2023)

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