Bristol stool type + abdominal-girth trend
Bristol Stool Form Scale (Lewis 1997; type 1-7 mapped to constipation / normal / soft / diarrhea) with an optional abdominal-girth trend (girth and timestamp at two points yields the change per hour).
Open the tool → Runs in your browser. Data leaves only if you deliberately send a problem report from the interactive tool.
Example
- Bristol stool type
- 4
Result: Bristol 4: smooth soft sausage (normal-ideal) per Lewis 1997.
The tool opens with these values already filled in. Replace them with your own.
What the result means
- Bristol 1-2
- Constipation.
- Bristol 3-4
- Normal.
- Bristol 5
- Soft.
- Bristol 6-7
- Diarrhea.
- Girth rising
- A trend to report, not a diagnosis: WSACS 2013 defines abdominal compartment syndrome by measured pressure, with no girth threshold.
What you enter
- Bristol stool type (1-7)
- Abdominal girth at T0 (optional)
- T0 timestamp (optional, ISO)
- Abdominal girth at T1 (optional)
- T1 timestamp (optional, ISO)
How this is calculated
Citation
Lewis SJ, Heaton KW. Stool form scale as a useful guide to intestinal transit time. Scand J Gastroenterol. 1997;32(9):920-924. Kirkpatrick AW, et al. Intra-abdominal hypertension and the abdominal compartment syndrome (WSACS 2013). Intensive Care Med. 2013;39(7):1190-1206. Read the sources: Lewis 1997 ↗, WSACS 2013 ↗
A reference and educational tool. Not medical, legal, or financial advice, and not a substitute for clinician judgment.