Pediatric and Obstetric Anaesthesia MCQs

Anaesthesia · 15 free questions with answers & explanations.

1. A parturient at 38 weeks gestation requires emergency Caesarean section under general anaesthesia. She is classified as high risk for aspiration. The MOST appropriate induction sequence is:
2. A parturient at 36 weeks gestation requires emergency caesarean section under general anaesthesia. Regarding the pharmacology of suxamethonium in pregnancy, which statement is most accurate?
3. In neonates, the correct uncuffed endotracheal tube internal diameter is estimated by the formula (Age/4) + 4. However, cuffed tubes are now recommended for use even in neonates in which context, and what is the reason?
4. Aortocaval compression syndrome (Supine hypotension syndrome) in pregnancy occurs after 20 weeks. What is the immediate anaesthetic management for a pregnant patient who develops sudden hypotension and bradycardia in the supine position during spinal anaesthesia for Caesarean section?
5. In a parturient requiring general anaesthesia for emergency Caesarean section, rapid sequence induction (RSI) differs from non-obstetric RSI primarily in which respect?
6. The minimum alveolar concentration (MAC) of inhalational anaesthetics is reduced in pregnancy. What is the approximate percentage reduction in MAC during term pregnancy and what mediates this change?
7. In obstetric anaesthesia, a parturient at 28 weeks gestation has aortocaval compression in the supine position. Which physiological mechanism explains why this causes worse hypotension than in non-pregnant patients?
8. In a neonate requiring tracheal intubation, which anatomical feature of the paediatric larynx differs most significantly from adults and determines correct ETT placement?
9. In a 3-year-old child undergoing adenotonsillectomy, sevoflurane induction is used. Compared with adults, children have faster inhalational induction primarily because of:
10. A parturient at 38 weeks gestation undergoes emergency Caesarean section under spinal anaesthesia. Post-delivery, she develops uterine atony with 1.5 L haemorrhage. Oxytocin is administered but fails to achieve uterine tone. The NEXT step in pharmacological management is:
11. Using the standard formula for uncuffed endotracheal tube (ETT) sizing in children, the appropriate ETT internal diameter for a 6-year-old child is:
12. A term neonate requires emergency laparotomy for necrotising enterocolitis. During anaesthesia, sevoflurane is used at 2 MAC. Compared to an adult, the neonate's MAC for sevoflurane is approximately:
13. A parturient at 38 weeks undergoes emergency caesarean section under general anaesthesia for placental abruption. After delivery, uterine atony develops. Oxytocin 5 IU is given as IV bolus. The haemodynamically dangerous direct effect of rapid IV oxytocin bolus is:
14. In neonatal anaesthesia for pyloromyotomy, a 5-week-old infant has been vomiting for 3 weeks. Preoperative electrolytes show: Na+ 130, K+ 2.9, Cl- 84, HCO3 38 mEq/L. The primary metabolic disturbance and the recommended resuscitation fluid are:
15. A parturient at 34 weeks gestation with severe pre-eclampsia (BP 168/112, proteinuria 3+, headache) requires emergency caesarean section. The obstetric anaesthetist elects spinal anaesthesia. Regarding epidural/spinal drug dosing in this patient, which statement is correct?