What question did this study set out to answer?

To evaluate the mechanisms connecting preoperative cognitive status, cardiopulmonary bypass-induced systemic inflammation, and persistent postoperative cognitive dysfunction.

March 1, 2014Journal of ExtraCorporeal TechnologyOpen Access

Cardiac Surgery, the Brain, and Inflammation

Q: What is the clinical evidence from this study?

Study design: Review. Population: Postoperative cognitive dysfunction (POCD) and delirium. Intervention: Cardiac surgery.

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Key result

Cardiac surgery and cardiopulmonary bypass trigger systemic inflammation that, combined with pre-existing cognitive impairment, may accelerate long-term cognitive decline.

Population

Patients undergoing cardiac surgery

Design

Review

Authors

DSDavid A. ScottSt Vincent's Hospital LELisbeth EveredCross-Cutting Cardiology BSBrendan SilbertSt John of God Subiaco Hospital

Discussion

Member takes

Implication

Suggests preoperative cognitive assessment before cardiac surgery; hypothesis-generating for inflammation-targeted interventions.

Key Points

To evaluate the mechanisms connecting preoperative cognitive status, cardiopulmonary bypass-induced systemic inflammation, and persistent postoperative cognitive dysfunction.
Synthesized clinical literature assessing cognitive outcomes across acute, intermediate (3 to 12 months), and long-term (5 years) postoperative intervals.
Evaluated the impact of pre-existing neuropathology, interleukin-mediated inflammatory cascades, and blood-brain barrier permeability during cardiac procedures.
Up to one-third of elective cardiac surgery patients exhibit pre-existing mild cognitive impairment or prodromal Alzheimer's disease pathology prior to surgery.
Cardiopulmonary bypass and surgical trauma trigger neurohumoral inflammatory responses, including interleukin release, which breach a compromised blood-brain barrier.
Inflammation-induced neurocognitive deterioration often persists and accelerates beyond initial recovery up to 5 years postoperatively, while proven preventative strategies remain sparse.

Structured PICO

Population

Patients undergoing cardiac surgery

Outcome

Postoperative cognitive dysfunction

Pre-existing cognitive impairment and perioperative inflammation during cardiac surgery may synergistically contribute to accelerated long-term postoperative cognitive decline.

Limitations

Evidence for effective preventive or therapeutic strategies is limited.
Many studies investigating preventive strategies have small sample sizes.
Cognitive assessments and criteria for determining cognitive change vary considerably between individual studies.

Cite This Study

Scott et al. (2014) conducted a review in Postoperative cognitive dysfunction (POCD) and delirium. Cardiac surgery was evaluated. Cardiac surgery and cardiopulmonary bypass trigger systemic inflammation that, combined with pre-existing cognitive impairment, may accelerate long-term cognitive decline.

synapsesocial.com/papers/6a919da598e4bd5a2f7435d0 https://doi.org/10.1051/ject/201446015

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Cardiac Surgery, the Brain, and Inflammation

Discussion

Member takes

Implication

Key Points

Structured PICO

Limitations

Cite This Study

Cardiac Surgery, the Brain, and Inflammation

Discussion

Member takes

Implication

Key Points

Structured PICO

Limitations

Cite This Study

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