Overview Flashcards
When do girls and boys on average enter puberty?
Girls - 11 years old
Boys - 6 months later
Name two gonadotrophins
LH
FSH
What does LH do?
Stimulates testosterone secretion from Leydig cells
What does FSH do?
Stimulates spermatogenesis by acting on sertoli cells
What is the function of dihydrotestosterone?
Enlargement of male sex organs
Secondary sexual characteristics
Anabolism
Describe true precocious puberty
<8 years old in girls
<9 years old in boys
Define puberty delay
Absence of secondary sexual development in a girl aged 13 or boy aged 14
What scoring system measures sexual characteristic?
Tanner
What are the symptoms of diabetes in children?
Polyuria, nocturnal enuresis, polydipsia, weight loss, fatigue
What is a risk of fluid resus in kids with diabetes?
Cerebral oedema
Describe congenital adrenal hyperplasia
21 OH enzyme deficiency
- Absent cortisol and aldosterone
- increased androgens
How does CAH present?
Addison Crisis
Virilisation
Describe an addison crisis how is it managed?
Hyponatraemia
Hyperkalaemia
Hypotension
Urgent salt and cortisol
How does increased testosterone present?
Female - ambiguous genitalia
Male - precocious puberty
What are the key anatomical differences between kids and adults?
Large head, prominent occiput Large surface area compared to volume High anterior larynx/floppy epiglottis More flexible ribs Blood volume 80mls/kg HbF
Name the signs of respiratory distress in kids
Prominent inspiratory and expiratory stridor Marked intercostal recession Significant distress/agitation Lethargy Restlessness
What causes bronchiolitis?
Viral - RSV, parvovirus, adenovirus
How does bronchiolitis present?
Cough, wheeze, fever
LRTI
How is bronchiolitis treated?
Supportive
Bronchodilators don’t work
What causes croup?
Parainfluenza virues
Where does croup affect?
Larygotrachobronchitis
Epiglottis
How does croup present?
URTI
Barking ‘seal’ cough
How is croup treated?
Steroids - dexamethasone
What is the classic X-ray sign of croup?
Steeple/wine bottle - tapering of the upper trachea
What should be given to kids with viral meningitis?
Steroids - prevent hearing loss
What is a classic sign of measles?
Koplik spots - white specs found in the mouth
6 week old baby with visible peristalsis, non -bilous vomiting
Pyloric stenosis
How is pyloric stenosis treated?
Incision into the sphincter
6 month old with green vomit, sausage mass on stomach with red current stool
Intussusception
How does intussusception look on US?
Target lesion - coiling of bowel folding in on itself