WAT-1 (pediatric iatrogenic withdrawal)
Withdrawal Assessment Tool-1 (Franck 2008): ten binary items plus a recovery-time score (< 2 min = 0, 2-5 = 1, > 5 = 2); total 0-12, >= 3 indicates iatrogenic opioid/benzodiazepine withdrawal.
Open the calculator → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Loose / watery stools in last 12 h
- 1
- Vomiting / retching / gagging in last 12 h
- 0
- Temperature > 37.8 C in last 12 h
- 0
- SBS state > 0 during observation
- 1
- Tremor
- 1
- Any sweating
- 0
- Uncoordinated / repetitive movement
- 0
- Yawning or sneezing
- 1
- Startle to touch
- 0
- Increased muscle tone
- 0
- Minutes to regain calm after stimulus
- 4
Result: WAT-1 5 of 12: iatrogenic withdrawal present per Franck 2008 (>=3 indicates iatrogenic opioid/benzodiazepine withdrawal).
The tool opens with these values already filled in. Replace them with your own.
What the result means
- 0-2
- No significant withdrawal.
- >=3
- Iatrogenic opioid/benzodiazepine withdrawal present (Franck 2008 sensitivity 0.87, specificity 0.88).
What you enter
- Loose / watery stools in last 12 h (0-1)
- Vomiting / retching / gagging in last 12 h (0-1)
- Temperature > 37.8 C in last 12 h (0-1)
- SBS state > 0 during observation (0-1)
- Tremor (0-1)
- Any sweating (0-1)
- Uncoordinated / repetitive movement (0-1)
- Yawning or sneezing (0-1)
- Startle to touch (0-1)
- Increased muscle tone (0-1)
- Minutes to regain calm after stimulus
How this is calculated
Franck LS, Harris SK, Soetenga DJ, Amling JK, Curley MAQ. The Withdrawal Assessment Tool-1 (WAT-1): an assessment instrument for monitoring opioid and benzodiazepine withdrawal symptoms in pediatric patients. Pediatr Crit Care Med. 2008;9(6):573-580. Read the source ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.