rcvs2_score: RCVS2 Score for Reversible Cerebral Vasoconstriction Syndrome

In cliot: Clinical Indices and Outcomes Tools

RCVS2 Score for Reversible Cerebral Vasoconstriction Syndrome

Description

Calculates the RCVS2 score to distinguish Reversible Cerebral Vasoconstriction Syndrome (RCVS) from other intracranial arteriopathies (e.g., Primary Angiitis of the CNS) in adult patients (18-55 years) presenting with abnormal intracranial vascular imaging.

Usage

rcvs2_score(recurrent_thunderclap_headache, carotid_artery_involvement,
            vasoconstrictive_trigger, sex, subarachnoid_hemorrhage)

Arguments

recurrent_thunderclap_headache	Numeric (0 or 1). Presence of recurrent or single thunderclap headache. (1 = Yes, +5 points).
carotid_artery_involvement	Numeric (0 or 1). Is the intracranial carotid artery affected? (1 = Yes, -2 points).
vasoconstrictive_trigger	Numeric (0 or 1). Was a vasoconstrictive trigger identified (e.g., vasoactive medications, postpartum state, illicit drugs)? (1 = Yes, +3 points).
sex	String. Patient sex ("Male" or "Female"). (Female = +1 point, Male = 0 points).
subarachnoid_hemorrhage	Numeric (0 or 1). Is subarachnoid hemorrhage present on imaging? (1 = Yes, +1 point).

Value

A list containing:

RCVS2_Score	The calculated total score (Range -2 to 10).
Risk_Category	Classification of likelihood (Low <=2, Equivocal 3-4, High >=5).
Interpretation	Diagnostic guidance based on the score.

References

Rocha EA, Topcuoglu MA, Silva GS, Singhal AB. RCVS2 score and diagnostic approach for reversible cerebral vasoconstriction syndrome. Neurology. 2019;92(7):e639-e647. doi:10.1212/WNL.0000000000006917

Examples

# Example 1: High Likelihood
# Recurrent TCH (+5), Female (+1), Trigger (+3), No Carotid (0), No SAH (0)
# Score = 9
rcvs2_score(1, 0, 1, "female", 0)

# Example 2: Low Likelihood
# No TCH (0), Carotid involved (-2), No Trigger (0), Male (0), No SAH (0)
# Score = -2
rcvs2_score(0, 1, 0, "male", 0)

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