Paediatric anaesthesia Flashcards
Preterm
< 37 weeks post conceptual age
Low birth weight
Less than 2.5kg
Very low birth weight
Less than 1.5kg
Extremely low birth weight
Less than 1Kg
Infant
1 month - 1 year
Which studies are the neonatal survival rates derived from?
EPICure and EPICure 2 Studies
What is the morbidity and mortality for < 23 weeks
Negligible survival. Appropriate to not attempt resuscitation as standard.
What is the morbidity and mortality for 23 - 23+6?
80% mortality 54% survivors have moderate to severe disability Reasonable to not attempt resuscitation but decision made with family
What is the morbidity and mortality for 24 - 24+6?
66% Mortality Half remaining have moderate to severe disability Resuscitation is generally considered appropriate unless there are other antenatally diagnosed conditions that would further impair survival
What is the morbidity and mortality for > 25 weeks?
33% Mortality Resuscitate as standard
When does surfactant secretion begin?
24-26th week
When does alveolar development begin?
From 32nd week
What are the cut off ages for 24 hour postoperative apnoea monitoring in neonates?
Up to 60th PC week if born preterm Up to 44th PC week if born term
How commonly is a patent ductus arteriosus seen in preterm neonates?
Up to 50% of extreme preterms
Describe the physiological complications of a PDA
Excessive pulmonary blood flow Low systemic pressures Myocardial failure Inability to wean from mechanical ventilation Sequela of low DBP e.g. NEC
List cardiorespiratory complications of ex-premature neonates
Bronchopulmonary dysplasia Tracheomalacia (from long term ETT placement) Subpglottic stenosis Persistent pulmonary hypertension of the newborn (PPHN)
Neonate
Less than 1 month
Paediatric defibrillation energy
4 J/Kg
Paediatric cardiac arrest adrenaline dose
10 mcg/kg
Infant estimated weight
(0.5 X Months) + 4 in Kg
Child weight estimate
weight in kg = 2 x (age in years + 4)
e.g. a 5 y/o = 18 Kg
Uncuffed tube size
(Age / 4) + 4
Cuffed tube size
(Age / 4) + 3.5
Oral ETT length
(Age / 2) + 12
Nasal ETT length
(Age / 2) + 15
LMA size for less than 5 Kg
1
LMA size for 5 - 10 Kg
1.5
LMA size for 10 - 20 Kg
2
LMA size for 20 - 30 Kg
2.5
LMA size for 30 - 50 Kg
3
Normal obs for infant
RR 30 - 40 HR 110 - 160 SBP 70 - 90
Normal obs for child 1 - 3
- RR 25 - 35
- HR 100 - 150
- SBP 80 - 95
Normal obs for child 3 - 6
- RR 25 - 30
- HR 95 - 140
- SBP 80 - 100
Normal obs for child 6 - 13
- RR 20 - 25
- HR 80 - 120
- SBP 90 - 110
Normal obs for child 13 - 17
- RR 15 - 20
- HR 60 - 100
- SBP 100 - 120
Propofol dose
1 - 4 mg/kg
Thiopentone dose
4 - 6 mg/kg
Ketamine dose
2 mg/kg
Fentanyl dose
1 - 2 mcg/kg
Morphine dose
0.1 mg/kg
Alfentanyl dose
30 - 50 mcg/kg
Paracetamol dose
15 mg/kg
Ibuprofen dose
5 mg/kg
Codeine dose
1 mg/kg
Atracurium dose
0.5 mg/kg
Rocuronium dose
1 mg/kg