Fourth PE system added. Adolescent cardiovascular exam at the same
teaching-focused depth as respiratory/neuro: five components with
significance + pearls + detailed step methods + watch-for blocks.
APTM auscultation diagram (new, inline SVG, no image file):
- Stylised anterior chest with sternum, clavicles, ICS level lines,
left mid-clavicular line
- Five colour-coded landmarks:
A Aortic — 2nd ICS right sternal border
P Pulmonic — 2nd ICS left sternal border
E Erb's pt — 3rd ICS left sternal border
T Tricuspid — 4th ICS left sternal border
M Mitral — 5th ICS mid-clavicular (apex)
- Side legend: location + what to listen for at each point
- Patient's-left / patient's-right labels to prevent mirror-image
confusion
CV-specific grading scales (3 new entries in SCALES):
- Murmur grade Levine 1–6
- Pulse amplitude 0–4+
- Capillary refill time thresholds
CV components:
1. Inspection (general appearance, central/peripheral cyanosis,
clubbing with Schamroth sign, precordial bulge, visible apex, JVP)
2. Palpation (apex position + character, parasternal heave, thrills
at all 5 points, peripheral pulses upper + lower, radio-femoral
delay for coarctation)
3. Auscultation — approach (positioning, diaphragm vs bell, systematic
walk through all 5 points, left lateral decub for MS, leaning
forward for AR)
4. Auscultation — heart sounds + murmurs (S1, S2 split, S3/S4 gallops,
murmur characterisation by timing/location/radiation/character,
Levine grading, dynamic maneuvers, innocent-murmur "7 S" pearl)
5. Peripheral vascular (four-limb BP for coarctation, radio-femoral
delay, bounding pulse differential)
UI wiring:
- renderSystem() emits APTM diagram card at the top of cv system,
before scales. Two-column layout: SVG on left, legend on right.
- accentMap/iconMap/labelMap extended with cv = rose accent,
heart-pulse icon, "Cardiovascular" label
- New sub-tab pill in pe-guide.html
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