1 / 16

Anesthesia for Cesarean Section

Anesthesia for Cesarean Section. -Emergent C/S & General Anesthesia Department of Anesthesiology,NTUH R3 Chang-Fu Su. Cesarean Section. C/S rate 14-15% at US (20-25% at Taiwan) Anesthesia: 3-12% maternal death

blue
Télécharger la présentation

Anesthesia for Cesarean Section

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Anesthesia for Cesarean Section -Emergent C/S & General Anesthesia Department of Anesthesiology,NTUH R3 Chang-Fu Su

  2. Cesarean Section • C/S rate 14-15% at US (20-25% at Taiwan) • Anesthesia: 3-12% maternal death • Majority during G/A: failed intubation, ventilation, oxygenation and pulmonary aspiration of gastric content • Risk factor: obesity, hypertensive disorder of pregnancy, emergently performed procedure.

  3. Indication for Cesarean Section-1 • Repeat cesarean section • Scheduled • Failed attempt at vaginal delivery • Dystocia • Abnormal presentation • Transverse lie • Breech presentation • Multiple gestation

  4. Indication for Cesarean Section-2 • Fetal stress/distress • Deteriorating maternal medical illness • Preeclampsia • Heart disease • Pulmonary disease • Hemorrhage • Placenta previa • Placenta abruption

  5. Preparation of Anesthesia • Preanesthetic medication • Sedative drug(x), atropine (x,not routine) • Intravenous fluids • 15-20 ml/kg L/R or N/S within 30 min • In urgent situation, not necessary to wait • Keep BP ,improve uteroplacental perfusion • Maternal position (avoid aortocaval compression , left uterine displacement) • Monitoring

  6. Anesthetic technique • Spinal anesthesia • For most elective and urgent C/S • Epidural anesthesia • Decrease likelihood of hypotension • Combined Spinal-Epidural anesthesia • General anesthesia

  7. Epidural anesthesia • Advantage • Titration (volume dependent, not gravity dependent), decreased likelihood of hypotension • Incremental dose (for longer operation) • Disadvantage • Dural puncture :1/200-1/500 in experienced hands, higher in training institution • If unintentional dural puncture, PDPH incidence is 50-85% • Slower onset

  8. General anesthesia • Regional anesthesia is best in most C/S • Avoid GA in difficult intubation, hx of malignant hyperthermia, severe asthma • Risk of maternal aspiration and neonatal depression

  9. General anesthesia for C/SMethod (1) • Left uterine displacement, monitor, pre-oxygenation ,wait for operator preparation • Cricoid pressure (rapid sequence induction) • Induction: ketamine(1.0mg/kg) or thiopental (4mg/kg) and SCC(1.0-1.5 mg/kg) or (rocuronium) • Intubation with a smaller ET tube • 30%-50% N2O in O2 and low concentration volatile inhalation anesthetic

  10. General anesthesia for C/SMethod (2)After delivery • Increase N2O with or without low concentration volatile inhalation anesthetic • Opioid • Intravenous hypnotic agent (benzodiazepine, barbiturate, propofol) if needed • Muscle relaxant • Extubation awake with intact airway reflex

  11. Emergency Cesarean Section(1)- Stable • Chronic uteroplacental insufficiency • Abnormal fetal presentation with ruptured membrane (not in labor) • ==>Preferred anesthetic technique : Epidural, spinal

  12. Emergency Cesarean Section(2)-Urgent • Dystocia • Failed trial of forceps • Active genital herpes infection with ROM • Previous classical C/S and activelabor • Cord prolapse without fetal distress • Variable deceleration with prompt recovery and normal FHR variability • Extension of preexisting epidural anesthesia or Spinal

  13. Emergency cesarean section(3)-Stat • Massive maternal hemorrhage • Ruptured uterus • Cord prolapse with fetal bradycardia • Agonal fetal distress (e.q., prolonged bradycardia or late deceleration with no FHR variability) • General unless preexisting epidural anesthesia can be extend satisfactorily

  14. Other indication for GA for C/S? • Severe pre-eclampsia (hypertension, proteinuria) • HELLP (Hemolysis, Elevated Liver Enzyme, and Low Platelets) • Eclampsia • Contraindication for regional anesthesia ( patient deny, local infection, bleeding tendency, local infection over injection area, allergy to local anesthetic)

  15. Discussion • Does low concentration volatile halogenated agent or non-depolarizing muscle relaxant depress uterine contraction? • Does Opioid accumulate in breast milk? (45min, 10hr) • Is our GA patient under enough anesthesia?

  16. Thanks for your attention!

More Related