227

(Vacuum Extraction)

Task analysis

1. 1.1 1.1.1 2 2 . 1 . 1.1.2 1.1.3 1.1.4 (deep transverse arrest) (persistent occuput posterior) 1.1.5 (fetal distress) 1.2 1.2.1 (absolute CPD) 1.2.2 1.2.3 (fetal distress) 1.2.4 1.2.5 1.3 1.3.1 - - - - - +2 1.3.2 1.3.3 (5 % Dextrose in half strength normal saline solution) 1.3.4 Oxytocin 1.3.5 Lithotomy

**1.1.3, 1.1.4, 1.1.5 OA

** **

228

Task analysis

2. 2.1 Malstrom Bird 2.1.1 20 . 40, 50 60 . (artificial caput succedaneum chignon) 16 . Malstrom occiput Bird (traction bar) occiput 2.1.2 Malstrom (metal plate) (chain) Bird 2.1.3 (traction bar handle) screw cap Bird 2.1.4 (suction tube) 15-30 . 90 . 2.1.5 2.2 (vacuum cup) 50 . ( 5) 2.3 Traction handle Traction handle 2.4

** **

229

Task analysis

2.5 G/M

3. 3.1 3.2 Pudendal nerve block 5 3.3 3.4 3.5 3.6 3.6.1 Hibitane cream 3.6.2 - Occiput sagittal suture Occiput 3.7 3.8 0.2 kg/cm2 2 0.8 kg/cm2 3.9 3.10 3.10.1 trial traction 3.10.2 3.10.3 subocciput symphysis pubis 3.11 3.12 save perineum

**1. Block 2. 3. 4. 5. 6. caput succedaneum 7. Trial traction 8.

230

Task analysis

3.13 3.14 4. 4.1 4.1.1 4.1.2 4.1.3 6 . 4.2 (chignon) 2 3

5. . .

, . : .. , 2541: 533 -544.

. . , . : .. , 2544: 241-254.

. Vacuum extraction -. , , , , . : , 2534 : 18-21.

. -. , , , , , . : , 2525: 35-9.

. . ,

, , , . : .. , 2538: 291-301.

Cunningham FG, MacDonald PC, Gant NF, Leveno KJ, Gilstrap LC III, Hankins

231

Task analysis

GDV, Clark SL. Williams obstetrics. 20th ed. Connecticut : Appleton & Lange, 1997: 490-2.

Hankins GDV,Clark SL, Cunningham FG, Gilstrap LC III. Operative obstetrics. Norwalk : Appleton & Lange 1995: 173-89.