Gynaecology & Obstetrics During suction evacuation in MTP the negative pressure of suction should be : A 100 to 200 mm Hg B 200 to 300 mm Hg C 400 to 600 mm Hg D 700 to 900 mm Hg 💡 Explanation During suction evacuation in MTP the negative pressure of suction should be : ✓ Correct Answer: C. 400 to 600 mm Hg