NEONATE Others Flashcards
TRANSFUSION TRIGGERS
Hemoglobin <10 g/dL - major surgery or newborn with moderate cardiopulmonary disease
Hemoglobin <13 g/dL - newborn with severe cardiopulmonary disease
PLATELETS should be kept above ___ /uL for invasive procedures
> 50,000/uL
Hemoglobin in transfused blood is
Hemoglobin A or Hemoglobin F?
HEMOGLOBIN A
Better release of oxygen at tissue level
Rare but potentially deadly complication of RBC transfusion where transfused lymphocytes in the donor blood attack the recepient none marrow
TRANSFUSION-ASSOCIATED GRAFT VERSUS HOST DISEASE
Causes: Fever Pancytopenia Diarrhea Hepatitis
Prevention:
GAMMA IRRADIATION OF CELLULAR BLOOD
This is used for transfusion in premature neonates to
- Reduce cytomegalic virus transmission
- Decrease risk of alloimmunization
- Decrease febrile hemolytic transfusion reactions
There are also decrease in retinopathy of prematurity, bronchopulmonary dysplasia and length of hospital stay
LEUKOCYTE REDUCTION by FILTRATION
Most frequent surgical procedures in the FIRST MONTH of life (6)
- Exlap for necrotizing enterocolitis
- Correction of pyloric stenosis
- Patent ductus arteriosus ligation
- Shunt procedure for hydrocephalus
- Central venous catheter placement
- Inguinal hernia repair
Newborns have ______ hemoglobin levels than infant or child
HIGHER - 15-18 g/dL
> 20 g/dL polycythemia
At risk for hypoglycemia
- Stressed preterm or SGA or VLBW
- With diabetic mothers
- Who have not been receiving either enteral or parenteral feeds
- Septic
Glucose level
- Full term
- Preterm
- Full term 60-80 mg/dL
2. Preterm 10 mg/dL below the full term glucose level (50-70 mg/dL
Hypoglycemia or gloves levels less than ___ warrant therapy with additional dextrose
< 45 mg/dL
Unexplained thrombocytopenia can be an early sign of _____
Sepsis
PT and PTT are ______ in newborns
10% longer
PT approach adult levels in the 1st week
PTT approach adult levels within the 1st month of life
Prevention of early vitamin K deficiency bleeding of the newborn
IM vitamin K administration after birth
NIBP
- Cuff size
- Cycle
- Size 1/2 or 2/3 of the length of the upper arm
2. Should not be routinely cycled excessively more than every 3 mins - at risk for venous stasis
Lipid emulsion dose for LAST
1.5 ml/kg bolus which may be repeated followed by continuous infusion of 0.25 ml/kg/min
EMLA
Mixture of lidocaine 2.5% and prilocaine 2.5%
Applied under an occlusive bandage for 45-60 mins
High or total spinal anesthesia in infants will present as _________
APNEA or falling oxygen saturation instead of hypotension due to lack of sympathetic tone in infants
Landmarks for caudal epidural block
- Coccyx
- Two safral cornua
- Posterior superior iliac spines
Evidence of intravascular injection during caudal block
- Peak T waves
- Increase in HR
- Increase in BP
Primary mechanism the newborn has to respond to heat loss
NONSHIVERING THERMOGENESIS
Administering _______ at dose ________ prophylactically to infants at risk of postoperative apnea to ensure adequate serum levels may prevent the need for prolonged periods of postoperative ventilatory support
CAFFEINE 10 mg/kg
Caffeine and theophylline - increase central respiratory drive and lowering the threshold of response to hypercarbis and stimulating contractility in the diaphragm
The most common cited cause of ROP (retinopathy of prematurity)
HYPEROXIA
Other causes: hypoxemia, hypotension, sepsis, intraventricular hemorrhage and other stresses
Surgical procedures performed in the FIRST WEEK of life (6)
- CDH
- Omphalocele
- Gastroschisis
- TEF
- Intestinal obstruction
- Myelomeningocele
Multimodal treatment of pulmonary HPN as preoperative preparation for patients with CDH (congenital diaphragmatic hernia) include:
- Nitric oxide
- Sildenafil - PDE-5 inhibitor
- Milrinone - PDE-3 inhibitor
- Epoprostenol or iloprost - PGI2 inhibitor
- Bosentan - endothelin inhibitor
- Imantibin - PDGF inhibitor
Anesthetic technique for repair of CDH
- Infants who will remain intubated: Inhalation agents and narcotics
- Small defect with little to no respiratory distress: Regional or neuraxial analgesia in anticipation of extubation
- Muscle relaxant to facilitate abdominal closure
- Avoid nitric oxide if abdominal closure could be difficult
During ___ to ___ week of fetal life, the abdominal contents are extruded into na extraembryonic coelem and gutnreturns to the abdominal cavity at 10th week
5th to 10th week
Omphalocele or Gastroschisis
Failure of part of or all the intestinal contents to return to abdominal cavity
Covered with a membrane called amnion
Umbilical cord is found at the APEX of the sac
OMPHALOCELE
Amnion - protects the abdominal contents from infection and loss of ECF
Omphalocele or Gastroschisis
Develops later in life, after intestinal contents have returned to the abd cavity
Results from interruption of the omphalomesenteric artery which results in ischemia and atrophy of the various layers of abd wall
No sac; abd viscera may be found outside the periotoneal cavity
Umbilical cord is found at one side of the intestinal contents
GASTROSCHISIS
Omphalocele or gastroschisis
High incidence of associated congenital anomalies
OMPHALOCELE
Beckwith-Wiedemann syndrome (5)
- Mental retardation
- Hypoglycemia
- Congenital heart disease
- Large tongue
- Omphalocele
The most common upper gastrointestinal obstruction in the newborn is ________
PYLORIC STENOSIS
Most common congenital primary neural tube defect
MYELOMENINGOCELE
Failure of neural tube closure during 4th week of gestation
Most common airway problem in infants and young children is ________
Upper airway obstruction due to LARYNGOMALACIA
Supraglottic structures converge on the glortic opening during inspiration preventing air entry
Characterized by
- Suprasternal and supraclavicular retractions
- Paradoxical collapse of chest wall or sternum
- Exaggerated diaphragmatic excursions
Treatment: POSITIVE AIRWAY PRESSURE
Resolve with age and without treatment
Single most effective strategy available to minimize heat loss in children who undergo surgery lasting for 1 hour
Forced air warmers
In children, heat loss follows the order:
- Radiation 39%
- Evaporation 24%
- Conduction 3%
Core temperature
Mid-esophagus usinh esophageal temp probe