Critical pH in Mendelson syndrome -: (A) 2.5, (B) 3, (C) 3.5, (D) 4
Answer is A. • Critical pH value: 2.5
• Gastric pH of 2.5 or less with a gastric contents volume greater than 25 ml are critical values.
• Maximum pulmonary damage is achieved at an aspirate pH value of 1.5.