Fever Flashcards
Fever of unknown origin
temp> 101 F
Duration > 3 weeks
1 week of inpatient investigation
Types of FUO
Classic
Nosocomial
Neutropenic
FUO associated with HIV
role of gallium scan
sarcoidosis
crohn disease
pneumocystits carinii
Hypothermia is temperature below
95 F
Drugs causing hypothermia
Ethanol barbiturates phenothiazines antidepressants neuromuscular blockers anesthetics
Endocrine causes of hypothermia
hypothyroidism Diabetes mellitus hypoglycemia addison hypopitutarism
Episodic hypothermia
shapiro syndrome
agenesis of carpus callosum
Mechanisms of heat loss
radiation(60%) conduction convection respiration evaporation
center for thermoregulation
pre optic anterior hypothalamus
Immediate defence of thermoneutrality
autonomic nervous system
delayed defence of thermoneutrality
endocrine system
tachycardia disproportionate to hypothermia
secondary hypothermia due to hypovolemia,hypoglycemia or toxin overdose
persistent hyperventilation with hypothermia
CNS lesion
organic acidosis
When should hypothermia pts not resuscitated
Frozen chest wall K+ more than 10 Temp less than 50-54 F pH < 6.5 evidence of intravascular thrombus with fibrinogen less than 50 mg/dl
non freezing peripheral cold injuries
Chilblain(pernio) Trench foot (immersion syndrome)
