From df36c549b79206090f4cfbaef70b7f3e90e1fce9 Mon Sep 17 00:00:00 2001 From: Daniel Date: Sat, 11 Apr 2026 04:19:39 +0200 Subject: [PATCH] Interactive vital signs selector with clinical notes per age group Replace static vital signs table with interactive age group dropdown. Each selection shows: HR (awake/sleeping), RR, SBP, DBP, temperature, SpO2 target, weight range, and age-specific clinical notes. 10 age groups: preterm through 18 years. Values from Harriet Lane Handbook 23rd Edition. Includes AAP 2017 BP classification thresholds for ages 13+, ETT sizing formulas, and clinical pearls (orthostatic testing, febrile tachycardia, athletic bradycardia, etc.). Full reference table preserved as collapsible "View All Age Groups". --- public/components/calculators.html | 72 +++++++---- public/js/calculators.js | 199 +++++++++++++++++++++++++++++ 2 files changed, 244 insertions(+), 27 deletions(-) diff --git a/public/components/calculators.html b/public/components/calculators.html index 12d1c10..63a9710 100644 --- a/public/components/calculators.html +++ b/public/components/calculators.html @@ -419,36 +419,54 @@

Normal Vital Signs by Age

- Harriet Lane Handbook + Harriet Lane Handbook, 23rd Edition
-

Reference ranges for heart rate, respiratory rate, and blood pressure by age. Source: Harriet Lane Handbook.

-
- - - - - - - - - - - - - - - - - - - - - - - -
AgeHeart Rate (bpm)Respiratory RateSystolic BP (mmHg)Diastolic BP (mmHg)Weight (kg)
Preterm120-17040-7055-7535-451-2.5
Newborn (0-1mo)100-16030-6060-8035-552.5-4.5
1-6 months100-15030-5070-9040-604-8
6-12 months90-14025-4075-9545-658-10
1-3 years80-13020-3080-10050-7010-15
4-5 years80-12020-2585-10550-7015-20
6-8 years70-11518-2590-11055-7520-27
9-11 years70-11016-2295-11558-7827-40
12-15 years60-10014-20100-12560-8040-60
16-18 years55-9512-18110-13065-8555-75
+

Select age group to view normal vital sign ranges. Source: Harriet Lane Handbook, 23rd Ed. (Johns Hopkins).

+ +
+ +
+ + + + +
+ View All Age Groups +
+ + + + + + + + + + + + + + + + +
AgeHR (bpm)RRSBP (mmHg)DBP (mmHg)Temp (C)
Preterm120-17040-7055-7535-4536.5-37.5
Newborn100-16530-6060-8035-5536.5-37.5
1-6 mo100-15030-5370-9040-6336.5-37.5
6-12 mo80-14025-4072-9540-6536.0-37.5
1-3 yr80-13020-3080-10545-7036.0-37.5
4-5 yr75-12020-2585-10848-7036.0-37.5
6-9 yr70-11518-2488-11550-7536.0-37.5
10-12 yr65-11016-2295-12055-7836.0-37.5
13-15 yr60-10014-20100-12858-8036.0-37.5
16-18 yr55-9512-18105-13560-8536.0-37.5
+
+
+

Quick Reference Formulas

diff --git a/public/js/calculators.js b/public/js/calculators.js index dd47483..1a5e18a 100644 --- a/public/js/calculators.js +++ b/public/js/calculators.js @@ -1427,5 +1427,204 @@ document.getElementById('bili-result').classList.add('hidden'); var bc = document.getElementById('bili-chart-container'); if (bc) bc.classList.add('hidden'); }); + + // ═══════════════════════════════════════════════════════════ + // VITAL SIGNS — Interactive age selector + // Harriet Lane Handbook 23rd Edition reference values + // ═══════════════════════════════════════════════════════════ + + var VITALS_DATA = { + preterm: { + label: 'Preterm (<37 weeks GA)', + hr: { awake: '120-170', sleeping: '100-150' }, + rr: '40-70', + sbp: '55-75', dbp: '35-45', + temp: '36.5-37.5', + weight: '0.5-2.5 kg', + spo2: '88-95% (target)', + notes: [ + 'HR and RR are highly variable and depend on gestational age', + 'BP increases with gestational age and postnatal age', + 'Target SpO2 88-95% to reduce retinopathy of prematurity risk', + 'Temperature instability is common — use servo-controlled warmers', + 'Bradycardia (<100 bpm) and apnea are common in premature infants' + ] + }, + newborn: { + label: 'Newborn (0-28 days)', + hr: { awake: '100-165', sleeping: '90-145' }, + rr: '30-60', + sbp: '60-80', dbp: '35-55', + temp: '36.5-37.5', + weight: '2.5-4.5 kg', + spo2: '>95%', + notes: [ + 'HR normally increases with crying (up to 180-190 bpm) — this is physiologic', + 'Periodic breathing (pauses <10 sec) is normal in newborns', + 'Acrocyanosis (blue hands/feet) is normal; central cyanosis is not', + 'BP is best measured in the right arm (pre-ductal)', + 'Normal weight loss of 5-7% in first 3-5 days; regain by 10-14 days' + ] + }, + '1-6mo': { + label: '1-6 Months', + hr: { awake: '100-150', sleeping: '85-135' }, + rr: '30-53', + sbp: '70-90', dbp: '40-63', + temp: '36.5-37.5', + weight: '4-8 kg', + spo2: '>95%', + notes: [ + 'Expected weight gain: 20-30 g/day (150-200 g/week)', + 'HR gradually decreases as vagal tone matures', + 'RR >60 at rest may indicate lower respiratory tract disease', + 'BP should be measured with appropriate cuff size (width 40% of arm circumference)' + ] + }, + '6-12mo': { + label: '6-12 Months', + hr: { awake: '80-140', sleeping: '75-130' }, + rr: '25-40', + sbp: '72-95', dbp: '40-65', + temp: '36.0-37.5', + weight: '8-10 kg', + spo2: '>95%', + notes: [ + 'Expected weight: triple birth weight by 12 months (~10 kg average)', + 'Weight gain slows to ~10-15 g/day', + 'Sinus arrhythmia (HR varies with breathing) is normal', + 'Febrile tachycardia: HR increases ~10 bpm per 1 degree C above 37' + ] + }, + '1-3yr': { + label: '1-3 Years', + hr: { awake: '80-130', sleeping: '70-120' }, + rr: '20-30', + sbp: '80-105', dbp: '45-70', + temp: '36.0-37.5', + weight: '10-15 kg', + spo2: '>95%', + notes: [ + 'Expected weight gain: ~200-250 g/month (2-2.5 kg/year)', + 'Tachycardia: HR >130 at rest warrants evaluation', + 'Tachypnea: RR >30 at rest may indicate respiratory distress', + 'BP screening begins at age 3 per AAP 2017 guidelines', + 'Estimated weight: 2 x (age in years) + 8' + ] + }, + '4-5yr': { + label: '4-5 Years', + hr: { awake: '75-120', sleeping: '65-110' }, + rr: '20-25', + sbp: '85-108', dbp: '48-70', + temp: '36.0-37.5', + weight: '15-20 kg', + spo2: '>95%', + notes: [ + 'Annual BP screening recommended from age 3', + 'Normal BP <90th percentile for age, sex, and height', + 'Elevated BP: 90th to <95th percentile (or 120/80 if lower)', + 'Estimated weight: 2 x (age in years) + 8', + 'ETT size (uncuffed): (age/4) + 4 = 5.0-5.25' + ] + }, + '6-9yr': { + label: '6-9 Years', + hr: { awake: '70-115', sleeping: '60-105' }, + rr: '18-24', + sbp: '88-115', dbp: '50-75', + temp: '36.0-37.5', + weight: '20-30 kg', + spo2: '>95%', + notes: [ + 'Resting HR >115 or <60 warrants evaluation', + 'BP should be measured at every clinical encounter', + 'Stage 1 HTN: >=95th percentile on 3 separate occasions', + 'Estimated weight: 3 x (age in years) + 7', + 'ETT size (cuffed): (age/4) + 3.5 = 5.0-5.75' + ] + }, + '10-12yr': { + label: '10-12 Years', + hr: { awake: '65-110', sleeping: '58-100' }, + rr: '16-22', + sbp: '95-120', dbp: '55-78', + temp: '36.0-37.5', + weight: '30-45 kg', + spo2: '>95%', + notes: [ + 'Pre-pubertal and early pubertal changes may affect vitals', + 'Orthostatic hypotension may emerge during growth spurts', + 'BP classification uses percentile tables for age <13', + 'HR may decrease with athletic training', + 'ETT size (cuffed): (age/4) + 3.5 = 6.0-6.5' + ] + }, + '13-15yr': { + label: '13-15 Years', + hr: { awake: '60-100', sleeping: '50-90' }, + rr: '14-20', + sbp: '100-128', dbp: '58-80', + temp: '36.0-37.5', + weight: '45-65 kg', + spo2: '>95%', + notes: [ + 'From age 13: use adult BP thresholds (AAP 2017)', + 'Normal: <120/<80 mmHg', + 'Elevated: 120-129/<80 mmHg', + 'Stage 1 HTN: 130-139/80-89 mmHg', + 'Stage 2 HTN: >=140/>=90 mmHg', + 'Athletic bradycardia (HR 45-60) may be normal in trained adolescents' + ] + }, + '16-18yr': { + label: '16-18 Years', + hr: { awake: '55-95', sleeping: '45-85' }, + rr: '12-18', + sbp: '105-135', dbp: '60-85', + temp: '36.0-37.5', + weight: '55-80 kg', + spo2: '>95%', + notes: [ + 'Vital signs approach adult values', + 'Adult BP thresholds apply (same as age 13+)', + 'Orthostatic vitals: measure lying, sitting, standing if dizzy', + 'Positive orthostatic test: SBP drop >20 or DBP drop >10 on standing', + 'Consider screening for eating disorders if bradycardia + low BMI' + ] + } + }; + + var vitalsSelect = document.getElementById('vitals-age-select'); + if (vitalsSelect) { + vitalsSelect.addEventListener('change', function() { + var key = vitalsSelect.value; + var resultDiv = document.getElementById('vitals-result'); + if (!key || !VITALS_DATA[key]) { resultDiv.classList.add('hidden'); return; } + + var v = VITALS_DATA[key]; + resultDiv.classList.remove('hidden'); + resultDiv.innerHTML = + '
' + + '
' + v.label + '
' + + '
' + + '
' + + '
Heart Rate (awake)
' + v.hr.awake + '
bpm
' + + '
Heart Rate (sleep)
' + v.hr.sleeping + '
bpm
' + + '
Respiratory Rate
' + v.rr + '
breaths/min
' + + '
Systolic BP
' + v.sbp + '
mmHg
' + + '
Diastolic BP
' + v.dbp + '
mmHg
' + + '
Temperature
' + v.temp + '
°C
' + + '
SpO2
' + v.spo2 + '
' + + '
Weight Range
' + v.weight + '
' + + '
' + + '
' + + '
Clinical Notes
' + + '
    ' + + v.notes.map(function(n) { return '
  • ' + n + '
    • '; }).join('') + + '
' + + '
'; + }); + } } })();