Gynaecology & Obstetrics The effective pressure to be achieved in vacuum extraction is : A 0.1 kg/cm2 B 0.1 kg/cm2 C 0.6 kg/cm2 D 1.2 kg/cm2 💡 Explanation The effective pressure to be achieved in vacuum extraction is : ✓ Correct Answer: C. 0.6 kg/cm2