15. CHANGE LOG (v4 → v5)

§TYPECHANGERATIONALE
1MODRemoved “(XREF §7)” from PSAX noteInternal marker
1DEL§1.4 Universal Pitfalls (8 items)Self-evident; one item covered by §1.1; cardiac-arrest line already in §6.2
2MODRemoved “(XREF §7)” from §2.1 HCM lineInternal marker
3ADD§3.1 EPSS operating-point clarification (target-specific, non-nested)Evidence integration
3ADD§3.1 LVIDd/EPSS pilot (v5 add)New data [Cosansu 2019]
3ADD§3.5.2 E/e′ >15 + B-lines 100%/95.8% (v5 add)New data [Zawadka 2020]
3MOD§3.5 diastolic revised to 2025 ASE framework (Step 1/2, LARS, E/e′ >14)2025 ASE update [Nagueh 2025]
3ADD§3.5.10 CHEOPS bundle + perioperative/critical-care LVDDNew subsection [Sanfilippo 2023; Ryu 2017; Fisher 2026]
3ADD§3.7 Acute cor pulmonale (TEE)New data [Mekontso Dessap 2016]
4ADD§4.1 12-region aeration score 0–36 (v5 add)Serial ICU monitoring [Bouhemad 2015; Mojoli 2019]
4ADD§4.1 Safe thoracentesis echo-free depth ≥15 mm (v5 add)[Volpicelli 2012]
4ADD§4.1 Perioperative aeration loss r = −0.43 (v5 add)[Monastesse 2017]
4ADD§4.4 A→B-lines = fluid endpoint (v5 add)[Lichtenstein 2014]
4DEL§4.1 Consolidation size tiersNo pool support; v6 source hunt
5ADD§5.2 VExUS (4 sites, grades 0–3, confounders)New subsection [Malbrain 2024; Huard 2026]
5ADD§5.4 Multimodal low-output/hypovolaemia pattern[Chen 2022]
5ADD§5.5 Fluid tolerance harm-limiting markers[Huard 2026]
5ADD§5.6 PLR practical points[Beurton 2019]
6ADD§6.1 RUSHNew subsection [Choi 2023]
6ADD§6.2 Cardiac arrest POCUSNew subsection [Soar 2021]
6ADD§6.3 Dyspnea/AF integrated protocolNew subsection [Huard 2026; Mojoli 2019]
6ADD§6.4 PE-risk combined vascular POCUS[Choi 2023; Jarman 2023]
6ADD§6.5 Acute aortic syndrome + occlusion protocol[Nishigami 2022; Nazerian 2019; Bloom 2020]
7ADD§7 HCM/HOCM POCUS recognition (7.1–7.4)New section [Stoll 2021; Dabo-Trubelja 2025; Ommen 2020]
8ADD§8.1 DVT, §8.2 Carotid, §8.3 Renal DopplerNew subsections [Chang 2021; Pokhrel 2023]
8ADD§8.4 Aorta-focused POCUS (Four Ss, thresholds, performance)[Nishigami 2022; Nazerian 2019; Bloom 2020; Wu 2023]
9ADD§9.3 Dengue GBWT (thresholds, meta-analysis, AEDES)New subsection [Shahsavand 2025; Tavares 2019; Quintero 2025]
9ADD§9.5 Obstetric/gynaecologic focused POCUSNew subsection [De Robertis 2026; Recker 2021; Singh 2026]
9ADD§9.6 Pitfalls (19 items)Standing rule
10ADD§10.4 v5 technique lines (3)User instruction [Chang 2021]
10ADD§10.10 Gastric POCUS (new section)Run 9 [Perlas 2018; El-Boghdadly 2019; Haskins 2026]
10ADD§10.11 Pitfalls (14 items, consolidated airway + gastric)Standing rule
11ADD§11.5 Pitfalls (8 items)Standing rule
12ADD§12.3 Pitfalls (10 items)Standing rule
13MODEPSS-peds pitfall retainedCarried from v4 §16
15DELKey Statistical FiguresDuplication of §1–§14; 5 stats → v6-to-do
16DELPitfalls & SafetyDuplication of per-section Pitfalls; 8 universal items removed as self-evident