SU11.{1-2,6} | Preoperative Assessment and Safe Anaesthesia Principles — Summary & Reflection

KEY TAKEAWAYS

Safe surgery rests on three disciplines. Preoperative assessment systematically detects comorbidity, quantifies it as an ASA physical status grade (I healthy to VI brain-dead, E for emergency — grading systemic disease, NOT operative difficulty), optimises modifiable risk, secures informed consent, and prepares the patient with 2-4-6-8 fasting (clear fluids 2 h, breast milk 4 h, formula/light meal 6 h, fatty/meat meal 8 h) to minimise aspiration. Airway risk is graded separately by Mallampati — do not conflate it with ASA. Anaesthesia is general (the triad of hypnosis + analgesia + muscle relaxation, needing active airway control), regional (spinal = subarachnoid, single-shot, dense fast block; epidural = catheter in the epidural space, titratable, slower), or local (infiltration/topical, with maximum safe doses lignocaine 3 mg/kg plain, 7 mg/kg with adrenaline; bupivacaine 2 mg/kg, and LAST treated with 20% intralipid). Safe general surgery verifies patient, procedure and site, communicates as a team, prevents infection and retained items, and is operationalised by the WHO Surgical Safety Checklist — sign-in before induction, time-out before incision, sign-out before leaving theatre — which measurably reduces surgical death and harm.

REFLECT

Think back to an operation or procedure you have observed — even a minor one in a simulated or clinical setting. Was a structured preoperative assessment evident, and could you now reconstruct the patient's ASA grade and the reasons behind the anaesthetic chosen? When you next watch a list, observe the time-out: who speaks, what exactly is confirmed aloud, and what happens to the team's attention in those few seconds. Reflect on one habit you will commit to now — always checking the medication list for antiplatelets and anticoagulants, always thinking ASA and Mallampati as two separate questions, or never letting an incision begin without a completed time-out — so that safe practice becomes automatic before you carry responsibility for a real patient.