Neonatal assessment Flashcards
What is the fetal lung volume
30ml/kg
Retained liquid in the lung is thought to cause
transient tachypnea of the newborn (TTN)
Lung inflation releases what
surfactant
5 parameters of the APGAR score
HR, Respiratory effort, Reflex irritability, color
3 characteristics of Persistent Pulmonary HTN of the Newborn
Sustained Elevated PVR
Decreased lung perfusion
Continued R-L shunting (patent foramen ovale and ductus arteriosus)
What is the drug of choice in the fetus with bradycardia and decreased CO?
Epinephrine
Normal Respiratory Frequency Infant/Adult?
Infant 30-50
Adult 12-16
The MV:FRC is _____x higher in the newborn
2-3x
Normal TV in Infant/Adult?
Infant 7ml/kg
Adult 7ml/kg
Normal FRC in Infant/Adult?
Infant 27-30ml/kg
Adult 30ml/kg
_________/________may develop after stimulation of carina or SLN, following AW obstruction, of following lung inflation (Hering-Breuer reflex)
Respiratory depression/Apnea
What terminates between L2 and L3 in neonates?
Conus medullaris
The neonatal diaphragm is more responsive to (NDMRs or DMRs?)
NDMRs- Like Roc
What are some signs of fetal pain?
Tachycardia Elevated BP Crying Restlessness Grimacing
The anterior fontanelle closes by age____
2 y/o
The blood/brain barriers is immature until about what age?
1 y/o
AW obstruction, Bronchospasm, Pulmonary Aspiration, Inadequate 02 delivery, Pneumothorax
What are respiratory causes of neonatal bradycardia and cardiac arrest?
What are Pharmacologic causes of neonatal bradycardia and cardiac arrest?
Inhalation Anesthetics, Succinylcholine, Anticholinesterases (Neostigmine).
Celiac reflex, Oculocardiac Reflex, SLN/Recurrent nerve stimulation
What are some neurogenic causes of neonatal bradycardia and cardiac arrest?
Hypoglycemia, Anemia, Hypothermia, Acidosis
What are the metabolic causes of neonatal bradycardia and cardiac arrest?
Neonates have a ____ GFR and Renal Blood Flow. What is the typical neonatal GFR?
Low GFR- 1.6ml/min/kg
GFR reaches normal by _______
1-2 years (12-24 months)
What is indicative of hypovolemia or decreased renal function in the neonate?
<1mg/kg/kr
Half life of meds are ____ in the neonate.
prolonged
Neonates are obligate _____ excreters.
sodium
3.0-3.5mm ETT
Appropriate ETT size for the FULL TERM NEONATE
What is the most appropriate size ETT for a premature neonate?
2.0-3.0
4.0mm ETT
Size ETT for 3month to 12 month old
The length of insertion for neonatal ETT should be
<10cm, between 8-10cm
Factors affecting metabolism of drugs in the neonate (pick 2)
Volume of distribution
Protein binding
Fat content
Normal cardiac output in the neonate?
200ml/kg/min
Why do inhalation agents equilibrate more rapidly in the neonate? (pick 3)
Increased level of ventilation
Increased Cardiac Output
Reduced Solubility in blood
Correct dosage of Atropine in the neonate?
10ug/kg IV
20ug/kg IM
Correct dosage of Glycopyrrolate in the neonate?
0.005-0.01mg/kg (5ug-10ug/kg)
Correct dosage of Ketamine in the neonate?
2mg/kg IV
4-5mg/kg IM
What is commonly interpreted as muscle rigidity with bolus doses of Remifentanil above 3ug/kg?
Vocal cord closure
Fasting guidelines for clear liquids
2hr- for GA, reginal, MAC
Fasting guidelines for light meal or nonhuman milk?
6hr
Fasting guidelines for breast milk
4hrs
Fasting guidelines for infant formula
6hrs
Fasting guideline for fried or fatty food or meat?
8hrs
Indication for blood components in perioperative period for major surgery in neonate.
<10 gm/dl
Indication for blood components in perioperative period for neonate with moderate cardiopulmonary disease?
<13gm/dl
Platelets should be >______ for invasive procedures
50,000
How do you calculate postgestational age?
gestational age + postnatal age
What postgestational age is the highest risk for complication?
<60 weeks have greatest risk (full term (40wks) +20 weeks).
EBV in Premature
90-100
EBV in Newborn (<1 month)
80-90
EBV in Infants 3mos-3years
75-80
EBV in children >6
65-70
EBV in adults
65-70
Preanesthetic assessment needs to include:
Birth Hx Pregnancy Course Complications Cigarette use Alcohol or substance use Primary interest in respiratory and CV Hx Head and neck AW