Surgical Principles in Otolaryngology

Pre-Op & Consent - Ready, Set, Cut!

• Pre-op Workup:
  • Hx: Co-morbidities (DM, HTN), allergies, meds (e.g., anticoagulants).
  • Ex: Airway (Mallampati score), local site exam.
  • Ix: Baseline (CBC, Coag profile), specific tests. ASA physical status.
  • NPO: ~6-8h solids, ~2h clear fluids.
• Informed Consent:
  • Must be: Voluntary, Informed, from Competent patient (VIC).
  • Written & specific for major procedures.

  ⭐ Key components of a valid informed consent: Diagnosis, Procedure, Risks, Benefits, Alternatives, Right to refuse. 📌 Mnemonic: BRAID (Benefits, Risks, Alternatives, Indication, Details of procedure).

Surgical Tech & Tools - Smart OR Arsenal

• Magnification: Microscopes, loupes.
• Endoscopy: Rigid (Hopkins rod) & flexible (fiberoptic/video); Xenon/LED light.
• Powered Systems: Microdebriders, drills.
• Energy Devices:
  • Electrocautery: Monopolar, Bipolar (safer near nerves).
  • Lasers: CO2 (soft tissue), KTP (vascular).
  • Coblation: Low-temperature radiofrequency ablation.
• Navigation: Image-Guided Surgery (IGS) for complex cases.
• Nerve Monitoring (NIM): Intraoperative protection (e.g., facial nerve).

⭐ The CO2 laser is absorbed by water, ideal for precise soft tissue ablation with minimal collateral thermal damage.

ENT Anesthesia & Airway - Breathe Easy Ops

Safe surgery hinges on meticulous airway management. Shared airway challenges common.

• Assessment: Mallampati, Thyromental Distance (TMD), LEMON (Look, Evaluate, Mallampati, Obstruction, Neck mobility).
• Techniques: Endotracheal Tube (ETT), Laryngeal Mask Airway (LMA), specialized tubes (e.g., RAE, MLT), jet ventilation.
• Key Risks: Airway fire (laser: use lowest $FiO_2$, ideally < 0.3-0.4; saline-soaked pledgets), laryngospasm, barotrauma. 📌 LEMON for difficult airway assessment.

⭐ Mallampati classification is crucial for predicting difficult intubation in ENT anesthesia.

Intra-Op & Post-Op - Cut, Mend, Monitor

• Intra-Op:
  • Incisions: Langer's lines (RSTLs) for cosmesis. Electrosurgery: cut, coag modes.
  • Hemostasis: Pressure, ligature, electrocautery. Agents: Gelfoam, Surgicel.
  • Closure: Layered. Sutures: absorbable (Vicryl) / non-absorbable (Prolene).
  • Drains: Penrose, JP drains for fluid/dead space management.
• Post-Op:
  • Monitoring: Vitals, pain, airway (key in neck surgery).
  • Wound Care: Dressings. Watch for hematoma, seroma, infection (redness, pus, fever).
  • Suture Removal: 5-14 days, site/tension dependent.

⭐ Secondary post-tonsillectomy hemorrhage: typically 5-10 days post-op (infection, slough separation). oka

• Meticulous haemostasis is crucial to prevent haematoma and potential airway compromise.
• Mucosal healing is unique: minimal scarring but high risk of adhesions/synechiae.
• Endoscopic techniques are preferred for reduced morbidity and faster recovery.
• Master common local & regional flaps (e.g., PMMC) for effective head & neck reconstruction.
• Strategic antibiotic prophylaxis is guided by surgical site contamination and patient factors.
• Preservation of critical nerves (e.g., Facial, RLN, SLN) is a paramount surgical objective.