a zone of relatively average damage to the tissues caused by inadequate blood supply. Tissues in the penumbra may be partly preserved due to collateral or alternative blood flow from neighbouring normal areas.

ISCHEMIC PENUMBRA: "Ischemic Penumbra is tissue damage surrounding a focus of primary damage from inadequate blood supply."
Cite this page: N., Pam M.S., "ISCHEMIC PENUMBRA," in, May 11, 2013, (accessed May 8, 2021).