Paediatrics Flashcards
(121 cards)
Define small / preterm baby
Preterm is defined as babies born alive before 37 weeks of pregnancy are completed. There are sub-categories of preterm birth, based on gestational age: extremely preterm (less than 28 weeks) very preterm (28 to 32 weeks)
The definition of SGA varies; it is most commonly defined as birth weight less than the 3rd percentile, 10th percentile, or -2 standard deviations compared with the mean birth length or body weight
Explain the aetiology / risk factors for a small / preterm baby
- Cone biopsy/LLETZ procedure - late miscarriage risk or premature birth; increased risk if excision more than 10mm
- Intrahepatic cholestasis of pregnancy - liver disorder during pregnancy, build-up of bile acids and other substances in the liver which leak into the bloodstream; common after 28wks; 10% dx have a preterm baby and increased risk of meconium; if bile acids too high then
- Pre-eclampsia - HTN and proteinuria; causes IUGR and prematurity, mainly due to tx which is to deliver baby asap if pre-eclampsia is very severe
- IUGR - 3% of pregnancies; growth of baby slows or stops during pregnancy; main causes: multiple pregnancy, failure of placenta, APS, infection, congenital anomaly, maternal PMHx, warfarin, low pregnancy weight, smoking/drugs/alcohol during pregnancy; close monitoring, regular scan and uterine artery doppler test
- Diabetes type 1 or 2 - keep glucose levels to normal levels, diet and exercise is important
- Lifestyle - alcohol (esp first 3 months) and cocaine/heroin increases risk of prematurity and growth/brian development; smoking increases 2x risk of stillbirth/prem, occurs with PROM, IUGR and cot death; maternal age (in teens and above 35) and weight (BMI<19.8 and >30) increases risk of prem; low income/physical work (and standing/shift work) is linked to preterm birth; domestic and physical violence/stress also increases risk
- Anti-phospholipid syndrome - Autoimmune against phospholipids; linked with recurrent miscarriage, IUGR, preterm and pre-eclampsia
- Multiple pregnancy - increased risk; normal gestation for twins 37wks, triplets 34wks and quads 32wks; increased risk of miscarriage, pre-eclampsia, PPH, placentla abruption, hyperemisis gravidarum, IUGR, GDM, TTTS
- Uterine abnormality - shape (bicornuate womb, unicornuate - increased risk of ectopic and late miscarriage also; didelphic only slight; septate has increased 1st trimester miscarriage; arcuate increased 2nd trimester miscrriage NOT preterm
- Cervical incompetence - cervix shortens and dilates in the 2nd trimester/early thrid trimester without any other syx, leading to PPROM or intrauterine infection causing preterm birth
- PPROM - premature prelabour rupture of membranes before 37wks; can lead to preterm but also to infection of mother and baby
- Placental abruption - placenta starts to come away from the inside of the womb wall before the baby has delivered (due tp impact or PE/IUGR
- Placenta praevia - linked to spontaenous preterm delivery and PPROM
- Gestational diabetes - increased risk of stillbirth, macrosomia, birth tauma, shoulder dystocia, hyperinsulinaemia/hypoglycaemia after birth
- Intrauterine infection - can cause PPROM
Summarise the epidemiology of a small / preterm baby
Every year, an estimated 15 million babies are born preterm (before 37 completed weeks of gestation), and this number is rising.
Preterm birth complications are the leading cause of death among children under 5 years of age, responsible for approximately 1 million deaths in 2015 (1).
Three-quarters of these deaths could be prevented with current, cost-effective interventions.
Across 184 countries, the rate of preterm birth ranges from 5% to 18% of babies born.
Highest numbers in India, China, Nigeria, Indonesia and US
Recognise the presenting symptoms of a small / preterm baby
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Recognise the signs of a small / preterm baby on physical examination
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Identify appropriate investigations for a small / preterm baby and interpret the results
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Generate a management plan for a small / preterm baby
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Identify the possible complications of a small / preterm baby and its management
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Summarise the prognosis for a small / preterm baby
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Define meconium aspiration
The passage of meconium becomes increasingly common the greater the infant’s gestational age, particularly when postterm. Infants who also become acidotic may inhale thick meconium and develop meconium aspiration syndrome.
Meconium is passed before birth by 8–20% of babies. It is rarely passed by preterm infants, and occurs increasingly the greater the gestational age, affecting 20–25% of deliveries by 42 weeks. It may be passed in response to fetal hypoxia. At birth these infants may inhale thick meconium
Explain the aetiology / risk factors of meconium aspiration
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Summarise the epidemiology of meconium aspiration
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Recognise the presenting symptoms of meconium aspiration
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Recognise the signs of meconium aspiration on physical examination
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Identify appropriate investigations for meconium aspiration and interpret the results
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Generate a management plan for meconium aspiration
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Identify the possible complications of meconium aspiration and its management
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Summarise the prognosis for patients with meconium aspiration
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Explain the aetiology / risk factors of Meckel’s diverticulum
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Summarise the epidemiology of Meckel’s diverticulum
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Recognise the presenting symptoms of Meckel’s diverticulum
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Recognise the signs of Meckel’s diverticulum on physical examination
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Identify appropriate investigations for Meckel’s diverticulum and interpret the results
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Generate a management plan for Meckel’s diverticulum
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