cliot (version 1.0.0)

h2fpef_score: H2FPEF Score for HFpEF Probability

Description

Calculates the H2FPEF score to estimate the probability of Heart Failure with Preserved Ejection Fraction (HFpEF) in patients with unexplained dyspnea. The score uses six clinical and echocardiographic variables: Heavy (BMI > 30), Hypertensive (>= 2 meds), Atrial Fibrillation, Pulmonary Hypertension, Elder (> 60), and Filling Pressure (E/e' > 9).

Usage

h2fpef_score(bmi, num_hypertensive_meds, atrial_fibrillation,
             pulmonary_hypertension_gt_35, age_gt_60, e_e_prime_gt_9)

Value

A list containing:

H2FPEF_Score

The calculated score (Range 0-9).

HFpEF_Probability

Estimated probability of HFpEF diagnosis.

Arguments

bmi

Numeric. Body Mass Index (kg/m^2). (>30 adds 2 points).

num_hypertensive_meds

Numeric. Number of antihypertensive medications currently prescribed. (>= 2 adds 1 point).

atrial_fibrillation

Numeric (0 or 1). History or presence of Paroxysmal or Persistent Atrial Fibrillation. (1 = Yes, +3 points).

pulmonary_hypertension_gt_35

Numeric (0 or 1). Pulmonary Artery Systolic Pressure > 35 mmHg on echocardiogram. (1 = Yes, +1 point).

age_gt_60

Numeric (0 or 1). Age > 60 years. (1 = Yes, +1 point).

e_e_prime_gt_9

Numeric (0 or 1). E/e' ratio > 9 on echocardiogram. (1 = Yes, +1 point).

References

Reddy YNV, Carter RE, Obokata M, et al. A Simple, Evidence-Based Scoring System for Patients With Unexplained Dyspnea. Circulation. 2018;138(8):861-870. doi:10.1161/CIRCULATIONAHA.118.034613

Examples

# Example 1: High Probability
# BMI 35 (+2), 3 HTN meds (+1), AFib (+3), Age 70 (+1), E/e' 12 (+1), PASP 40 (+1)
# Score = 9
h2fpef_score(35, 3, 1, 1, 1, 1)

# Example 2: Low Probability
# BMI 25 (0), 0 HTN meds (0), No AFib (0), Age 40 (0), E/e' 8 (0), PASP 25 (0)
# Score = 0
h2fpef_score(25, 0, 0, 0, 0, 0)