cliot (version 1.0.0)

chads_65_score: CHADS-65 Score (Canadian Cardiovascular Society)

Description

Calculates the CHADS-65 score for atrial fibrillation stroke risk stratification, based on the Canadian Cardiovascular Society (CCS) guidelines. This score modifies the standard CHADS2 score by lowering the age threshold to 65. It is used to guide the decision for Oral Anticoagulant (OAC) therapy.

Usage

chads_65_score(age, chf, hypertension, diabetes, stroke_tia)

Value

A list containing:

CHADS_65_Score

The calculated score (Range 0-6).

Recommendation

Clinical guidance regarding antithrombotic therapy.

Arguments

age

Numeric. Patient age in years. (>= 65 years adds +1 point).

chf

Numeric (0 or 1). Congestive Heart Failure. (1 = Yes, +1 point).

hypertension

Numeric (0 or 1). History of Hypertension. (1 = Yes, +1 point).

diabetes

Numeric (0 or 1). Diabetes Mellitus. (1 = Yes, +1 point).

stroke_tia

Numeric (0 or 1). History of Stroke or TIA. (1 = Yes, +2 points).

References

Andrade JG, et al. 2018 Focused Update of the Canadian Cardiovascular Society Guidelines for the Management of Atrial Fibrillation. Can J Cardiol. 2018;34(11):1371-1392. doi:10.1016/j.cjca.2018.08.026

Examples

# Example 1: High Risk
# 66yo (+1), No other factors
# Score = 1 -> OAC Recommended
chads_65_score(66, 0, 0, 0, 0)

# Example 2: Low Risk
# 50yo, No risk factors
# Score = 0 -> No therapy
chads_65_score(50, 0, 0, 0, 0)