analysis.py

# analysis.py

def calculate_risk_score(current_record):
    """
    AI-driven Risk Scoring (2026 Standard)
    Evaluates physiological stress by correlating multiple vitals.
    """
    score = 0
    
    # 1. Oxygen Saturation (SpO2) - Critical Indicator
    if current_record['spo2'] < 90: score += 50
    elif current_record['spo2'] < 95: score += 20
    
    # 2. Heart Rate (BPM) vs. Stability
    if current_record['bpm'] > 120 or current_record['bpm'] < 50: score += 30
    elif current_record['bpm'] > 100 or current_record['bpm'] < 60: score += 15
    
    # 3. Heart Rate Variability (HRV) - Autonomic Stress
    # 2026 Research: SDNN below 50ms indicates high risk
    if current_record['hrv'] < 50: score += 20
    elif current_record['hrv'] < 100: score += 10
    
    # 4. Respiratory Rate (RR)
    if current_record['rr'] > 25 or current_record['rr'] < 10: score += 15

    # Final Percentage (Capped at 100)
    risk_percent = min(score, 100)
    
    # Determine Severity Label
    if risk_percent >= 75:
        level = "CRITICAL"
    elif risk_percent >= 40:
        level = "WARNING"
    else:
        level = "STABLE"
        
    return {
        "score": risk_percent,
        "level": level,
        "recommendation": get_recommendation(level)
    }

def get_recommendation(level):
    if level == "CRITICAL": return "Immediate medical intervention required. Notify ER."
    if level == "WARNING": return "Condition deteriorating. Increase monitoring frequency."
    return "Patient is stable. Continue routine monitoring."