Table 3:

Putative theories to explain elevated ICP in PTC^a

Proximal Etiology	Result
Increased interstitial fluid (ISF) volume	Increased cerebral volume
Increased blood volume
Increased tissue volume
Increased CSF production rate	Increased CSF volume
Increased CSF outflow resistance
Loss of cerebral autoregulation	Increased cerebral arterial pressure
Increased cerebral venous pressure	Increased venous blood volume and increased ISF
	Reduced CSF outflow and increased CSF volume

^a(Adapted from Walker.¹⁰)