Altered retinal cerebral vessel oscillation frequencies in Alzheimer's disease compatible with impaired amyloid clearance.

Retinal vessels are similar to cerebral vessels in their structure and function. Moderately low oscillation frequencies of around 0.1 Hz have been reported as the driving force for paravascular drainage in gray matter in mice and are known as the frequencies of lymphatic vessels in humans.

[Anxiety during the chronic critical illness in the intensive care unit - an interpretive phenomenological study].

Unlabelled: Anxiety during the chronic critical illness in the intensive care unit - an interpretive phenomenological study Abstract.

Background: Patients with a chronic critical illness (CCI) are persons who are dependent on life-sustaining therapies in the intensive care unit (ICU) for an extended period of time following a life-threatening, acute illness. In the ICU they are exposed to numerous physical and psychological stressors.