Acute Paediatric Care Flashcards
Differences in a childs airway from an adults
Large head to body size Short necks Large tongue Obligate nasal breathers Nasal passages easily obstructed Compressible floor of mouth and trachea Higher anterior larynx
Differences in a childs breathing from an adults
Small total surface area for air tissue interface
Lower airways small and easily obstructed
Diaphragmatic breathing
Fever type I (slow twitch) fibres - easy fatigue
Soft non calcified bones - v compliant chest wall and so recession and in drawing
horizontal ribs - less expansion
Accessory muscles being used
- head bobbing signs
Differences in respiratory in children vs adults
High metabolic rate / O2 consumption - resp rate higher and gradually falls Oxygen dissociation curve shifted left in neonates (HbF predominance) Immature lungs vulnerable Apnoea may occur in babies
CVS changes in children vs adults
Circulating blood volume 70-80ml/kg so a small loss can make a big difference
Circulation changes from in utero to ex utero
ECG features vary with age
Stroke volume increases with size (HR higher and gradually falls)
Systemic vascular resistance progressively rises from birth
- BP lower and rises
What indicates life threatening pathology, but may be seen in anorexia?
Bradycardia (<60)
What does the large surface area : weight loss in children mean?
Rapid heat loss / hypothermia
What does an immature immune system at birth mean?
Babies are more susceptible to infections
Oxygen sats in adults vs children
Adults sit much higher
90 / 92% cut of for normal childrens sats
What does a bilateral wheeze in a child indicate?
Viral
What accessory muscles / signs are there when a child is struggling to breath?
Head bobbing (babies) Tracheal tug Costal recession - intercostal - subcostal