Clinical Trial: Screening of Susceptibility Genes in Postoperative Cognitive Dysfunction(POCD)

Study Status: Completed
Recruit Status: Unknown status
Study Type: Observational

Official Title: Screening of Susceptibility Genes in Postoperative Cognitive Dysfunction After On-pump Cardiac Surgery

Brief Summary: The aim of this study is to perform a whole-genome linkage analysis for identification of the susceptibility loci for POCD

Detailed Summary:

BACKGROUND: Postoperative cognitive dysfunction is probably the most frequent type of postoperative cognitive impairment. As it mainly affect the elderly population, POCD is receiving increasing attention. However, the pathophysiology of POCD remains incompletely understood. No study had elucidate why somebody are apt to suffer from POCD, but others not. In current study, we try to use GWAS technology to find out whether there is a correlation between POCD and gene specificity.

DESIGNING: 120 patients will be screened who are schedule to receive selective on-pump cardiac surgery， 5 ml blood of the patient will be collected before anesthesia induction. Investigetors will measure the cognitive function of the patients one day before surgery and 7 d after surgery and identify whether the patient suffer from POCD used in MMSE test. Randomly select 36 patients who suffer from POCD and 36 patients without POCD(control), GWAS technology will be used to screen the susceptibility gene between these two groups.

EXPECTED RESULTS ：Find out some susceptibility genes correlate to POCD.

CONCLUSIONS: The patients who are apt to suffer from POCD have some special susceptibility genes differ from normal people.


Sponsor: Xijing Hospital

Current Primary Outcome: single nucleotide polymorphisms(SNPs) of each patient [ Time Frame: about 10 minutes before anesthesia induction ]

Original Primary Outcome: Same as current

Current Secondary Outcome: mini-mental state examination scale [ Time Frame: one day before surgery, 7 d after surgery ]

the cognitive function


Original Secondary Outcome: Same as current

Information By: Xijing Hospital

Dates:
Date Received: March 4, 2014
Date Started: March 2013
Date Completion: September 2014
Last Updated: August 14, 2014
Last Verified: August 2014