Initial Assessment - Chest Check Champions
- Primary Survey (ABCDE): Rapid evaluation; Airway (C-spine!), Breathing, Circulation, Disability, Exposure.
- Identify & Treat Life Threats: 📌 ATOM-FC
- Airway Obstruction
- Tension Pneumothorax: Needle decompress (2nd ICS MCL / 5th ICS AAL), then chest tube.
- Open Pneumothorax: Three-sided occlusive dressing, then chest tube.
- Massive Haemothorax: >1500mL blood or >200mL/hr. Chest tube; consider thoracotomy.
- Flail Chest: Paradoxical movement. Analgesia, O2, consider PPV.
- Cardiac Tamponade: Pericardiocentesis.
⭐ Beck's triad (hypotension, muffled heart sounds, JVD) is indicative of cardiac tamponade, but present in only a minority of cases.
- Chest Exam: Inspect, Palpate (crepitus, tenderness), Percuss (dull/hyperresonant), Auscultate.
Specific Injuries - Injury Intel Insights
| Injury | Pathophysiology | Diagnosis | Anesthetic Implications |
|---|---|---|---|
| Pulmonary Contusion | Alveolar hemorrhage, edema. | CXR (patchy infiltrates, 24-48h lag), CT. Hypoxemia. | ↓ Compliance, V/Q mismatch. Judicious fluids. LPV, PEEP. Epidural. |
| Myocardial Contusion | Myocardial bruise, arrhythmias, ↓ contractility. | ECG (arrhythmias, ST changes), ↑Troponins, Echo. | Arrhythmia/hypotension risk. Avoid depressants. Invasive monitoring. |
| Tracheobronchial Injury | Trachea/bronchus tear, near carina. | SubQ emphysema, pneumomediastinum, hemoptysis. Bronchoscopy (gold). | Difficult airway. Spontaneous ventilation if able. FOB. One-lung ventilation. |
| Diaphragmatic Rupture | Abdominal content herniation. Left > Right. | CXR (bowel in chest), CT. Often missed. | ↓ FRC, aspiration risk. RSI. No N2O. PPV may worsen herniation. |
Airway & Ventilation - Breath Bossing Basics
⭐ Rapid Sequence Intubation (RSI) is generally the technique of choice for securing the airway in trauma patients, assuming no anticipated difficult airway where awake fiberoptic intubation might be safer.
- Airway Securement:
- C-spine protection (Manual In-Line Stabilization - MILS); RSI preferred.
- Avoid nasal intubation (suspected basilar skull fracture).
- Ventilation Strategy:
- Lung Protective Ventilation: Tidal Volume (TV) 6-8 mL/kg Ideal Body Weight (IBW), PEEP 5-10 cmH₂O.
- Target $P_aO_2/FiO_2 > \textbf{300}$. Permissive hypercapnia (if no raised Intracranial Pressure - ICP).
- One-Lung Ventilation (OLV): Indications: surgical exposure, isolate lung pathology (e.g., massive hemoptysis, bronchopleural fistula).
| Feature | Double Lumen Tube (DLT) | Bronchial Blocker (BB) |
|---|---|---|
| Placement | Harder, larger diameter | Easier, via Endotracheal Tube (ETT) |
| Isolation | Excellent | Good, may need adjustment |
| Suctioning | Bilateral access | Limited to ETT lumen |
| Post-op Vent | ETT exchange needed | Remove BB, ETT stays |
- 📌 DOPE for acute desaturation on ventilator: Dislodgement, Obstruction, Pneumothorax, Equipment failure.
Management of Intraoperative Hypoxemia during OLV:
Analgesia & Operative Care - Relief & Repair Rundown
| Modality | Pros (LA Info) | Cons | Contraindications |
|---|---|---|---|
| TEA | Gold std, bilateral (0.1-0.25% Bupi/Ropi) | Hypotension, motor block, PDPH | Coagulopathy, sepsis, ↑ICP, hypovolemia |
| PVB | Unilateral, ↓BP (15-20mL 0.25-0.5% LA) | Difficult, PTX | Similar to TEA, local infection |
| ICNB | Simple, specific (3-5mL/nerve 0.5% Bupi) | Multi-jabs, short duration, PTX | Local infection, refusal |
| SAPB | US-guided, anterolateral (20-30mL 0.25% Bupi) | Newer, ↓data severe trauma | LA allergy, local infection |
- Op Care: RSI, lung isolation, manage life-threats.
High‑Yield Points - ⚡ Biggest Takeaways
- Airway security is paramount; early intubation for severe trauma, hypoxia, or respiratory distress.
- Tension pneumothorax: immediate needle decompression (2nd ICS MCL), then chest tube.
- Massive hemothorax (>1500 mL initial / >200 mL/hr) often needs urgent thoracotomy.
- Flail chest: aggressive analgesia (epidural ideal), PPV for respiratory failure.
- Cardiac tamponade (Beck's triad) requires emergency pericardiocentesis or thoracotomy.
- One-lung ventilation (OLV) is key for surgical repair, often with double-lumen tubes.
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