Vital Monitor

I adapt reference ranges based on your region and demographics:

Blood Pressure Classification (ACC/AHA 2017 — Used Globally)

Note: Some regions use slightly different cutoffs (e.g., Europe: 140/90 for hypertension). I adapt to your location.

Heart Rate Targets (Resting)

Body Temperature

BMI Classification (WHO Standard)

Note: Asian populations often use lower cutoffs (Overweight ≥23, Obese ≥25) due to different metabolic risk profiles.

Data Structure

vitals-tracker.json

{
  "profile": {
    "date_of_birth": "1980-05-15",
    "sex": "female",
    "height_cm": 165,
    "height_ft_in": [5, 5],
    "target_weight_kg": 65,
    "target_weight_lb": 143,
    "bp_target": {"systolic": 130, "diastolic": 80},
    "conditions": ["hypertension", "type2_diabetes"],
    "region": "US"
  },
  "measurements": [
    {
      "timestamp": "2026-03-20T08:00:00Z",
      "bp_systolic": 132,
      "bp_diastolic": 84,
      "heart_rate": 72,
      "temperature_c": 36.6,
      "temperature_f": 97.9,
      "weight_kg": 68.5,
      "weight_lb": 151,
      "spo2": 98,
      "respiratory_rate": 16,
      "position": "sitting",
      "arm": "left",
      "device": "Omron HEM-7120",
      "notes": "Morning reading, before medication"
    }
  ],
  "trends": {
    "bp_7day_avg": {"systolic": 130, "diastolic": 82},
    "bp_30day_avg": {"systolic": 135, "diastolic": 86},
    "weight_change_30day_kg": -0.8,
    "weight_change_30day_lb": -1.8,
    "last_updated": "2026-03-20"
  }
}

Analysis Capabilities

1. Trend Analysis

Linear Trend Detection:

BP Trend over 30 days:
Week 1: 138/88 → Week 2: 135/85 → Week 3: 132/82 → Week 4: 130/80
Trend: ↓ Improving (-8/-8 mmHg)
Significance: Statistically significant improvement

Variability Assessment:

BP Variability (CV = Coefficient of Variation):
CV = 8.2% (Target: <10% for stability)
Status: Good control consistency

2. Time-of-Day Patterns

Morning Surge Detection:

Morning BP (6-10 AM): 142/88
Evening BP (6-10 PM): 128/78
Morning surge: +14/+10 mmHg
Risk: Elevated morning surge associated with CV events
Recommendation: Take BP medication at bedtime

3. Classification Tracking

BP Classification History:
Jan: Stage 2 (148/92)
Feb: Stage 1 (138/86) ← Started medication
Mar: Stage 1 (132/84)
Apr: Elevated (128/82) ← Lifestyle changes
Status: ↓↓ Significant improvement

Early Warning System

🚨 Critical Alerts (Immediate Medical Attention)

⚠️ Attention Alerts (Schedule Appointment)

Risk Stratification

Cardiovascular Risk Score (Simplified)

Risk Factors:
- BP ≥140/90: +3 points
- BP 130-139/80-89: +2 points
- Age >55 (men) or >65 (women): +2 points
- BMI ≥30: +2 points
- Current smoker: +3 points
- Diabetes: +3 points
- Family history of premature CVD: +1 point

Total Risk:
0-2: Low risk
3-5: Moderate risk
6-9: High risk
≥10: Very high risk

Measurement Best Practices

Blood Pressure Measurement Protocol

Before Measuring:

1. Rest 5 minutes in seated position
2. Avoid caffeine, exercise, smoking for 30 minutes
3. Empty bladder
4. Sit with back supported, feet flat on floor
5. Arm supported at heart level

During Measurement:

1. Don't talk
2. Use correct cuff size (bladder encircles 80% of arm)
3. Take 2 readings, 1 minute apart
4. Record the average

Home Monitoring Schedule:

• New diagnosis: Twice daily (morning + evening) for 7 days
• Stable hypertension: 3-4 times per week
• Medication change: Daily for 2 weeks
• General monitoring: Weekly

Weight Measurement Protocol

1. Same time each day (morning, after bathroom, before eating)
2. Same scale
3. Light clothing or no clothing
4. Record weekly average (daily weights fluctuate)

Output Report Format

# Vital Signs Report — March 20, 2026

## 📊 Current Readings

### Blood Pressure
| Metric | Latest | 7-Day Avg | 30-Day Avg | Target | Status |
|--------|--------|-----------|------------|--------|--------|
| Systolic | 132 mmHg | 130 | 135 | <130 | ⚠️ Slightly elevated |
| Diastolic | 84 mmHg | 82 | 86 | <80 | ⚠️ Slightly elevated |
| Classification | Stage 1 Hypertension | | | | |

**Trend**: ⬇️ Improving (30-day → 7-day: -5/-4 mmHg) ✓

### Other Vitals
| Vital | Value | Normal Range | Status |
|-------|-------|--------------|--------|
| Heart Rate | 72 bpm | 60-100 | ✅ Normal |
| Temperature | 36.6°C | 36.1-37.2 | ✅ Normal |
| SpO2 | 98% | ≥95% | ✅ Normal |
| Weight | 68.5 kg (151 lb) | — | Stable |

### BMI Analysis
| Metric | Value | Classification |
|--------|-------|----------------|
| BMI | 25.2 kg/m² | Overweight |
| Target | 23.9 kg/m² | Normal upper limit |
| To Goal | -1.4 kg (-3.1 lb) | — |

---

## 📈 Trend Analysis

### Blood Pressure Progress

150 ┤ ╭╮ 145 ┤ ╭──────╯│ 140 ┤╭╯ ╰╮ 135 ┤ ╰── Current: 132 130 ┼ └──────────────────── Jan Feb Mar Apr

**Analysis**:
- 30-day improvement: -6/-4 mmHg
- Current trajectory: On track to reach target in 6-8 weeks
- Variability: Good (CV = 7.2%)
- Morning surge: Mild (+8 mmHg), acceptable

### Weight Trend

70 kg ┤ ╭╮ 69 kg ┤╭╯╰────╮ 68 kg ┼ ╰── Current: 68.5 67 kg ┤ └──────────────────── Week 1 2 3 4

**Analysis**:
- 30-day change: -0.8 kg (-1.8 lb)
- Rate: 0.2 kg/week (healthy, sustainable)
- Projected goal date: 7 weeks

---

## 🎯 Personalized Targets

Based on your profile (45-year-old female, hypertension, prediabetes):

| Vital | Your Target | Current | Gap |
|-------|-------------|---------|-----|
| BP | <130/80 mmHg | 132/84 | -2/-4 |
| BMI | <25 kg/m² | 25.2 | -0.3 |
| Weight | 65 kg (143 lb) | 68.5 | -3.5 kg |
| Resting HR | 60-80 bpm | 72 | ✅ In range |

---

## 🔔 Recommendations

### Immediate (Today)
- [ ] Take evening BP reading (before dinner)
- [ ] If BP >140/90 twice today, contact doctor

### This Week
- [ ] Continue daily BP monitoring
- [ ] Maintain current medication schedule
- [ ] 30 minutes moderate exercise daily

### Lifestyle Adjustments
- **Sodium**: Reduce to <2g/day (currently estimated 2.5g)
- **Potassium**: Increase to 3.5g/day (bananas, leafy greens)
- **Weight**: Continue gradual loss at 0.5 kg/week

### Follow-Up
- **Next BP check with doctor**: 2 weeks
- **Lab work**: Lipid panel in 4 weeks
- **Home monitoring**: Continue daily until BP <130/80 consistently

---

## ⚠️ Safety Information

**When to Seek Immediate Care**:
- BP ≥180/110 mmHg
- Chest pain with BP elevation
- Severe headache with vision changes
- Shortness of breath with HR >100

**When to Schedule Appointment**:
- BP consistently >160/100 for 3+ days
- Weight gain >2 kg (4.4 lb) in 1 week
- Irregular heart rate detected

---

**Disclaimer**: This analysis is for informational purposes only and does not replace professional medical advice. Always consult your healthcare provider for medical decisions.

**Next Assessment Recommended**: 7 days