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Posterior cortical atrophy (PCA), also called Benson's syndrome, is a rare form of dementia which is considered a visual variant or an atypical variant of Alzheimer's disease (AD). [ 1 ] [ 2 ] [ 3 ] The disease causes atrophy of the posterior part of the cerebral cortex , resulting in the progressive disruption of complex visual processing . [ 4 ]
Posterior cerebral artery syndrome is a condition whereby the blood supply from the posterior cerebral artery (PCA) is restricted, leading to a reduction of the function of the portions of the brain supplied by that vessel: the occipital lobe, the inferomedial temporal lobe, a large portion of the thalamus, and the upper brainstem and midbrain.
The following are central branches of the PCA, also known as perforating branches: Thalamoperforating and thalamogeniculate or postero-medial ganglionic branches: a group of small arteries which arise at the commencement of the posterior cerebral artery: these, with similar branches from the posterior communicating, pierce the posterior perforated substance, and supply the medial surfaces of ...
The PCA begins as a continuation of the posterior communicating artery in 70-90% of fetuses with the remainder of PCAs having a basilar origin. The fetal carotid origin of the PCA usually regresses as the vertebral and basilar arteries become dominant and it finds a new origin in the basilar artery.
PCA may refer to: Medicine and biology. Patient-controlled analgesia; Plate count agar in microbiology; Polymerase cycling assembly, for large DNA oligonucleotides;
The PCA’s structure and its conservative Reformed theology appealed to Wells and her family, her now ex-husband and their seven (of ultimately nine) kids, to join Covenant Presbyterian Church in ...
Personal support work is unique among health care professions in that the scope of a PSW's duties does not extend beyond what the client could do him/herself if the client were physically and cognitively able. [20] No other profession's scope is similarly described. [21] In Newfoundland and Labrador, a PSW is called a Personal Care Attendant (PCA).
The Washington Post reported on February 14, 2009, the view of David Brooks, a buyer for a snack company that had visited PCA facilities in the mid-1980s (when PCA was under Hugh Parnell's control), that "everybody in the peanut industry" in the states involved (Georgia, Virginia, and Texas) knew of the serious sanitation issues associated with ...