Cricoid pressure (Sellick manoeuvre) is applied during rapid sequence induction. What force should be applied once the patient loses consciousness?
- A 10 newtons
- B 20 newtons
- C 30 newtons ✓
- D 50 newtons
Correct answer: C. 30 newtons
Explanation
The recommended force is 30 newtons (about 3 kg) after loss of consciousness, with 10 newtons applied while the awake patient is pre-oxygenated so that gagging and active regurgitation are not provoked. Excessive force beyond this does not improve occlusion of the oesophagus but risks distorting the larynx and worsening the laryngoscopic view, which is why 50 newtons is wrong.
Reference: Miller's Anesthesia, 9th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.