cliot (version 1.0.0)

kruis_ibs_score: Kruis Score for Irritable Bowel Syndrome (IBS)

Description

Calculates the Kruis Score to assist in the diagnosis of Irritable Bowel Syndrome (IBS). The score differentiates IBS from organic bowel disease based on history, symptom characteristics, and basic physical/laboratory findings.

Usage

kruis_ibs_score(symptoms_triad, odd_pain_description, alternating_bowel_habits,
                duration_gt_2yr, abdominal_mass, leukocytosis, elevated_esr,
                positive_fob)

Value

A list containing:

Kruis_Score

The calculated total score.

Result

Diagnostic interpretation ("Diagnosed as IBS" if Score > 44).

Arguments

symptoms_triad

Numeric (0 or 1). Presence of the triad: Abdominal pain, flatulence, and irregularity of bowel movements. (1 = Yes, +34 pts).

odd_pain_description

Numeric (0 or 1). Patient describes pain as "burning", "cutting", "very strong", "terrible", "feeling of pressure", "dull", "boring", or "not so bad". (1 = Yes, 0 pts; 0 = No, +23 pts).

alternating_bowel_habits

Numeric (0 or 1). Alternating constipation and diarrhea. (1 = Yes, +14 pts).

duration_gt_2yr

Numeric (0 or 1). Duration of symptoms > 2 years. (1 = Yes, +16 pts).

abdominal_mass

Numeric (0 or 1). Abdominal mass palpable on exam. (1 = Yes, 0 pts; 0 = No, +16 pts).

leukocytosis

Numeric (0 or 1). Leukocytosis (> 10,000 /uL). (1 = Yes, 0 pts; 0 = No, +16 pts).

elevated_esr

Numeric (0 or 1). ESR > 20 mm/hr (or >10 depending on lab). (1 = Yes, 0 pts; 0 = No, +13 pts).

positive_fob

Numeric (0 or 1). Positive Fecal Occult Blood test. (1 = Yes, 0 pts; 0 = No, +12 pts).

References

Kruis W, Thieme C, Weinzierl M, et al. A diagnostic score for the irritable bowel syndrome. Its value in the exclusion of organic disease. Gastroenterology. 1984;87(1):1-7.

Examples

# Example 1: Likely IBS
# Symptoms triad (1), No odd pain (0), Alternating (1), >2yr (1), No mass (0), No labs (0)
# Score = 34 + 23 + 14 + 16 + 16 + 16 + 13 + 12 = 144
kruis_ibs_score(1, 0, 1, 1, 0, 0, 0, 0)

# Example 2: Possible Organic Disease
# No triad (0), Odd pain desc (1), No alternating (0), Short duration (0), Mass (1), Labs normal (0)
# Score = 0 + 0 + 0 + 0 + 0 + 16 + 13 + 12 = 41 (<=44)
kruis_ibs_score(0, 1, 0, 0, 1, 0, 0, 0)