Neonates general Flashcards

1
Q

SIX WEEK WELL BABY CHECK

A
  • Weight gain
  • General alertness
  • Head Circumference
  • Vision (fixing and following , strabismus)
  • Tone and posture
  • Hips, including check for limitation of hip abduction
  • Cardiac murmurs
  • Descent of the testes
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2
Q

Problems commonly encountered at the six week check

A
  • Failure to thrive
  • Vomiting
  • Snuffles
  • Colic
  • Skin rashes, especially nappy rash and seborrhoeic dermatitis
  • Umbilical granuloma
  • Constipation and diarrhoea
  • Infection e.g. URTI, eye infection, UTI, gastroenteritis, pneumonia
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3
Q

Failure to thrive likely if weight gain is less than

A

140g per week

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4
Q

Vomiting Qs

A
  • The amount and frequency of vomiting
  • Any associated weight loss?
  • Any associated dehydration?
  • Blood or bile staining of vomitus
  • Is the vomiting projectile?
  • Is there abdominal distension, tenderness or a palpable mass?
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5
Q

non-organic causes of vomiting

A

Feeding problems e.g. overfeeding,
excessive handling after feeds, swallowed wind,
incorrect feed
preparation.

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6
Q

organic causes of vomiting

A

1) Neonatal intestinal obstruction
2) Ileus, e.g. prematurity, asphyxia, exchange transfusion via an umbilical vessel.
3) Septicaemia
Infection e.g. urinary tract infection, gastroenteritis, pneumonia, meningitis,septicaemia, omphalitis.
4) Necrotising enterocolitis
5) Metabolic causes – galactacaemia and congenital adrenal hyperplasia
6) Gastro-oesophageal reflux e.g. hiatus hernia or gastritis associated with swallowed meconium, or
blood.

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7
Q

Neonatal intestinal obstruction DDx

A
  • Duodenal atresia (common in infants with Down’s syndrome)
  • Malrotation
  • Volvulus
  • Small vowel atresia
  • Meconium ileus – 10 to 20% infants with cystic fibrosis present with this.
  • e.g. Large bowel obstruction
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8
Q

causes of vomiting in older infants

A

1) Gastroenteritis
2) U.T.I.
3) Pyloric stenosis
4) Regurgitation, gastroesophageal reflux

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9
Q

causes of hematemesis, melaena, bloody stools

A

1) Swallowed maternal/placental blood at delivery.
2) Swallowed maternal blood from cracked nipples.
3) Local trauma – nasogastric tube, laryngeal suction.
4) Fissure-in-ano
5) NEC
6) Haemorrhagic disease – DIC or haemorrhagic disease of the newborn
7) Gastroenteritis

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10
Q

RARE causes of hematemesis, melaena, bloody stools

A
  • Trauma
  • Meckels diverticulum
  • Malrotation
  • Peptic ulceration
  • Rectal polyp/haemangiomas
  • Intussusception
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11
Q

WHEN SHOULD THE DOCTOR BE CALLED

A

significant change in the infant’s usual colour, breathing, behaviour or activity, or if the
mother is in any doubt or worried about this

• Repeated forceful or projectile vomiting (in contrast to the fairly common spitting up or
regurgitation);
• Poor feeding and repeated refusal of feed:
• Frequent diarrhoea, with bowel movements becoming more numerous or watery:
• Excessive constant crying or a continuing cry different from babies usual kind of cry;
• Rapid laboured breathing, or frequent severe coughing, (in contrast to the common minor breathing
irregularities or occasional cough);
• Unusual skin rashes;
• Persistent fever, particularly in the first few months

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12
Q

Strategies used in the management of colic include:

A

• Gentle motion and physical contact,
• Use of a pacifier or dummy,
• Avoid too frequent feeding or overfeeding (not more than 3 hourly for formula fed infants),
• If the infant is breast fed check the mothers diet, (decreasing a high intake of milk, or coffee may
help; occasionally maternal ingestion of certain berries, tomatoes, onions, cabbage, chocolate or
spices may be a cause of symptoms)
• Carry baby in front-pack (3 hours per day) when not crying; there is less colic in countries where
infants are constantly carried by the mother,
• Maternal rest,
• Change formula (frequent changes are not encouraged); whey based formulas may be associated with
increased stomach emptying time and be less satisfying,
• A trial of soy formula (this has a lower lactose content and does not contain cows milk protein),
• A trial of early introduction of solids, i.e. Baby rice, (this delays gastric emptying),
• Occasionally admitting the infant to hospital (for maternal rest and to break the “cycle”),
• Follow the infant closely until the crying is improved or has resolved

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13
Q

General newborn discharge criteria

A

• Stable vital signs
• Passed urine & stool
• Feeding established
• Physical exam
– No abnormality that requires hospitalisation
– Jaundice (if present) assessed and appropriate management / follow-up arranged
• Mother’s knowledge, ability & confidence demonstrated

  • Family members or other support staff (including medical) available
  • Maternal & infant blood tests reviewed
  • Family environment & social risks assessed
  • Barriers to adequate follow-up care addressed
  • Source of ongoing care identified for Mum & infant
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14
Q

Causes of altered metal status in a neonate

The MISFITS

A

T=trauma (accidental & non-accidental – shaken baby syndrome)
H=heart disease & hypovolemia
E=endocrine (congenital adrenal hyperplasia & thyrotoxicosis)
M=metabolic (electrolyte imbalance)
I=inborn error metabolism
S=sepsis (meningitis, pneumonia, UTI)
F=formula mishaps (under / over-dilution)
I=intestinal catastrophes (volvulus, intussusception, NEC)
T=toxins & poisons
S=seizures

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15
Q

SIDS risk factors

A

Prone position /co-sleeping, overheating,
parental alcohol / drug use, urban,
maternal smoking,
lower socio-economic status , premature infant

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16
Q

SIDS prevention

A

– Always place babies on back to sleep
– Pacifiers may reduce risk (delay for one month of breastfeeding, no need to replace if fall out of mouth or if infant doesn’t want)
– Keep temperature of room comfortable, avoid overheating
– Encourage Tummy Time when awake and supervised
– Keep cot in smoke-free room

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17
Q

Neonatal conjunctivitis under 24 hours

A

Silver nitrate drops

Resolves in 48 hours

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18
Q

Neonatal conjunctivitis day 2-5

A

neisseria gonorrhoea
thick copious discharge
Dx DNA probe
Tx IV PCN or Ceftriaxone for 7 days

19
Q

Neonatal conjunctivitis after 5 days

A

bacterial - S aureus, H flu, S pneumo, Enterococcus, Pseudomonas
Dx gram stain, culture
Tx erythromycin, gentamicin

20
Q

Neonatal conjunctivitis day 2-14

A

HSV
Dx rapid HSV test, culture
Tx acyclovir IV x 10 days and topical 2 hourly for 7 days

21
Q

Neonatal conjunctivitis day 3-14

A

chlamydia
Dx conjunctival scraping, DNA probe, retest 6 weeks after tx
Tx oral erythromycin x 14 days

22
Q

Cryptorchidism (undescended testis)

A

Descend into scrotum by 38 – 40 weeks

75% cryptorchidism in full terms and 90% in premature newborns will spontaneously descend by 9 months

Surgical intervention if not by 12 months

23
Q

RESP DISTRESS signs

A
Tachypnoea
Laboured breathing: intercostal/subcostal recession & nasal flaring
Expiratory grunting
Tachycardia
Cyanosis
24
Q

RESP DISTRESS pulmonary DDx common

A
  1. Transient tachypnoea of the newborn
  2. Meconium aspiration
  3. Pneumothorax
  4. Persistent Pulmonary Hypertension of the newborn
  5. Milk aspiration
25
Q

RESP DISTRESS pulmonary DDx rare

A
  1. Diaphragmatic hernia
  2. Tracheo-oesophageal fistula
  3. Respiratory distress syndrome
  4. Pulmonary hypoplasia
  5. Airways obstruction eg. choanal atresia
  6. Pulmonary haemorrhage
26
Q

RESP DISTRESS non-pulmonary Ddx

A
  1. Congenital heart disease
  2. Intracranial birth trauma/asphyxia
  3. Severe anaemia
  4. Metabolic acidosis
27
Q

TTN =

A

Transient Tachypnoea of newborn
Commonest cause of resp. distress in term infants
CXR: fluid in the horizontal fissure
Resolves in a few days

28
Q

Meconium Aspiration

A

25% at 42 weeks
Asphyxiated infants gasp before birth
Causes mechanical obstruction & chemical pneumonitis, predisposes to infection –> pneumothorax/pneumomediastinum, Persistent pulmonary hypertension of the newborn = difficult to oxygenate despite high ventilatory pressures

CXR: overinflated lungs with patches of collapse & consolidation

29
Q

Pneumonia risk factors

A

Prolonged ROM
Chorioamnionitis
GBS
Prematurity

30
Q

Pneumonia Dx

A

Septic Screen

Blood Culture, FBC, GBS PCR, Urine, CSF &/- CRP

31
Q

Pneumonia Tx

A

Broad Spectrum antibiotics for at least 48 hours

  1. Benzylpenicillin: Group B Strep, Listeria, Gram +
  2. Gentamicin: Gram - bacteria
32
Q

pneumothorax 2nd to

A
  1. Meconium aspiration
  2. Respiratory distress syndrome
  3. Mechanical ventilation
33
Q

pneumothorax dx

A

transillumination & CXR

34
Q

pneumothorax Tx

A

Simple/Small (no resp compromise):
 Supplemental O2
 Needle thoracocenthesis (20ml syringe attached to butterfly needle, 2ICS MCL & aspirate)

Tension/Large (resp compromise):
 Intubation & Ventilation
 Chest drain insertion (4/5th ICS MAL)

35
Q

PPHN
What is it?

Causes?

A

Persistent pulmonary hypertension of the newborn

  1. Birth asphyxia
  2. Meconium aspiration
  3. Septicaemia
  4. Respiratory Distress Syndrome
36
Q

PPHN Examination:

A

Cyanosis + normal CVS exam soon after birth

then a murmur & signs of cardiac failure

37
Q

PPHN Investigations:

A

CXR: Normal heart size, lung fields oligaemic
Echocardiogram: confirm diagnosis & exclude congenital heart disease

38
Q

PPHN Management:

AIM
maintain systolic blood pressure whilst reducing pulmonary arterial pressure

A

Mechanical ventilation & vasopressors
Inhaled Nitric Oxide
High frequency oscillatory ventilation (HFOV) & Extracorporeal membrane oxygenation (ECMO)

39
Q

Milk aspiration risk factors

A
  1. Respiratory distress
  2. Bronchopulmonary dysplasia
  3. Neurological damage
  4. Gastro-oesophageal reflux
  5. Cleft palate
40
Q

Diaphragmatic Hernia
Defect in what?
Incidence?

A

posterolateral foramen of the diaphragm (Bochdalek hernia), anterior morgagni hernia
hiatus hernia

1 in 4000 births

41
Q

Diaphragmatic Hernia exam

investigation

A

Displaced apex beat & heart sounds on RHS
Poor air entry on LHS of chest

CXR

42
Q

Diaphragmatic Hernia management

A

Large NGT passed & suction applied to decompress intrathoracic bowel
Treat pneumothorax if present
Surgical repair once medically stable
ECMO pre & post-operative respiratory support if pulmonary hypoplasia

43
Q

RDS CXR

A

homogenous ground glass appearance bilaterally

44
Q

Heart Failure Exam

A

Abnormal heart sounds &/or murmurs
Enlarged liver from venous congestions
Reduced femoral pulse volume in aortic coarctation/interrupted aortic arch