Effects of Blocking Blue Light At Night Post CABG, AVR, MVR, CABG AVR, CABG MVR, or SAH

Summary

Purpose The purpose of this study is to determine whether filtering out blue light at nighttime reduces post-surgical inflammation and/or moderates cognitive decline and mood and sleep alterations in patients undergoing elective CABG, AVR, MVR, CABG AVR, CABG MVR, or SAH surgery. If manipulating nighttime light in hospital rooms improves patient outcomes, then it would be a relatively easy and inexpensive innovation that could reduce post-surgical complications and save millions of dollars per year in health care costs by shortening the length of hospital stays and reducing morbidity. The investigators aim to determine the relationship between inflammation and cognitive dysfunction after cardiac surgery.

Eligibility

Inclusion Criteria:

* Both men and women that are undergoing elective (non-emergency)

  * on-pump CABG surgery,
  * AVR,
  * MVR,
  * CABG AVR,
  * CABG MVR or
  * SAH
* No history of diagnosed psychiatric disorders or organ failure

Exclusion Criteria:

* Evidence or diagnosis of dementia or other cognitive deficit
* Diagnosed psychiatric disorder (including depression and anxiety)
* Organ failure \[kidney (creatine \> 1.5 mg/dL), liver, etc.\]
* Chronic obstructive pulmonary disease,
* Any immune disorder
* Acute infection
* Prior cardiac surgery
* Elective aneurysms
* Combined cardiac operations
* Left main stenosis greater than 70%
* Left ventricular ejection fraction (LVEF) lower than 0.5
* Any condition that increases likelihood of the need for a blood transfusion during or after the surgery
* Clotting disorder
* Suspected less than 8th grade English reading comprehension level

Conditions2

Locations1 site

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