Galen eCalcs - Calculator: Crohn's Activity Index
Description
The Crohn’s Disease Activity Index is a tool used to quantify the symptoms of patients with Crohn’s disease.
Remission of Crohn's disease is defined as a fall in the CDAI of less than 150. Severe disease is defined as a value of greater than 450. Most major research studies on medications in Crohn's disease define response as a fall of the CDAI of greater than 70 points.
Calculator Search/Filter Keywords
At the calculator level, eCalcs comes delivered with default keywords that can be leveraged in the "Search/Filter" field to enable Specialty or System driven calculator searching. The following calculator keywords are delivered by default for the Crohn's Activity Index calculator:
Specialties
- Endocrinology
- Family Practice
- Gastroenterology
- Internal Medicine
Systems
- Digestive
Calculator Configuration Options
| Preference Name | Valid Range | Description |
|---|---|---|
| Publishing | Checked / Unchecked | When checked the calculator will display for users on the front end. When unchecked, the calculator WILL NOT display for users on the front end. |
| Orderable Item Override | (BLANK) / G-CROHNS | “(BLANK)” indicates that the global configuration options for Orderable Item will be used. “G-CROHNS” indicates that the calculator specific value will be used and can display the specific calculator name in the output. |
Calculator Inputs
| Input | Mapping Type | Description |
|---|---|---|
| Sex | Demographics | Patient Sex |
| Number of liquid of soft stools | Manual Input | Number of liquid stools in one week |
| Abdominal Pain | Manual Input | Patient’s average daily abdominal pain |
| General well-being | Manual Input | Patient’s average daily general well-being |
| Arthritis / Arthralgia | Problems | Patient has arthritis or arthralgia |
| Iritis or uveitis | Problems | Patient has Iritis or Uveitis |
| Erythema / Pyoderma Gangrenosum / Apththous Stomalitis | Problems | Patient has erythema, pyoderma gangrenosum, or apththous stomalitis |
| Anal Fissure / Fistual / Perirectal Abscess | Problems | Patient has an anal fissure, fistula, or perirectal abscess |
| Bowel-Related Fistula | Problems / No Default Mappings | Patient has a bowel-related fistula |
| Febrile Episode | Manual Input | Patient has experienced febrile (fever) episode over 100 degrees in the past week |
| Lomotil / Opiates | Medications | Patient is taking Lomotil or Opiates for diarrhea |
| Abnormal Mass | Manual Input | Patient has an abnormal mass |
| Hematocrit Inclusion | Manual Input | Hematocrit Inclusion |
| Hematocrit | Results | The volume percentage of red blood cells in blood |
| Weight Changes | Manual Input | Whether or not the patient is experiencing weight changes related to condition |
| Current Weight | Vitals | Patient’s current weight |
| Standard Weight | Manual Input | Patient’s standard weight |
Calculator Outputs
| Output | Mapping Type | Description |
|---|---|---|
| Activity Index | Result | Crohn’s disease index |
References
http://en.wikipedia.org/wiki/Crohn%27s_Disease_Activity_Index
http://www.ibdjohn.com/cdai/