rome_iv_child_cyclic_vomiting_syndrome: Rome IV Diagnostic Criteria for Child Cyclic Vomiting...

In cliot: Clinical Indices and Outcomes Tools

Rome IV Diagnostic Criteria for Child Cyclic Vomiting Syndrome (CVS)

Description

Evaluates the **Rome IV criteria** for diagnosing **Cyclic Vomiting Syndrome (CVS)** in children and adolescents. Diagnosis requires recurrent, stereotypical episodes of vomiting with acute onset and return to baseline health between episodes, excluding organic causes.

Usage

rome_iv_child_cyclic_vomiting_syndrome(stereotypical_episodes, episode_count_6mo,
                                       inter_episodic_wellness,
                                       not_explained_by_other_condition,
                                       symptom_onset_ge_6_months,
                                       symptoms_active_last_3_months)

Arguments

stereotypical_episodes	Numeric (0 or 1). Are episodes **stereotypical** in onset, duration (< 1 week), and frequency? (1 = Yes).
episode_count_6mo	Numeric. Number of discrete episodes in the **past 6 months**. (Must be >= 2).
inter_episodic_wellness	Numeric (0 or 1). Is there an **absence of vomiting** between episodes, with return to baseline health? (1 = Yes).
not_explained_by_other_condition	Numeric (0 or 1). Have other causes (e.g., GI, neurological, metabolic) been **excluded**? (1 = Yes).
symptom_onset_ge_6_months	Numeric (0 or 1). Did symptom onset occur at least **6 months ago**? (1 = Yes).
symptoms_active_last_3_months	Numeric (0 or 1). Have criteria been fulfilled for the last **3 months**? (1 = Yes).

Value

A list containing:

Diagnosis

"Criteria Met for Cyclic Vomiting Syndrome (CVS)" or "Criteria Not Met".

References

Hyams JS, Di Lorenzo C, Saps M, et al. Functional Disorders: Children and Adolescents. Gastroenterology. 2016;150:1456-1468. doi:10.1053/j.gastro.2016.02.015

Examples

# Example 1: Diagnosis Met
# Stereotypical (1), 3 episodes in 6 months,
#Inter-episodic wellness (1), Excluded other causes, Chronic duration met
rome_iv_child_cyclic_vomiting_syndrome(1, 3, 1, 1, 1, 1)

# Example 2: Not Met (Vomiting between episodes)
# Stereotypical (1), 2+ episodes, Vomiting between episodes
#(0 for inter_episodic_wellness)
rome_iv_child_cyclic_vomiting_syndrome(1, 4, 0, 1, 1, 1)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.