A Prospective observational study designed to study the association between preoperative frailty and postoperative delirium in cardiac surgery patients.

Delirium is frequently seen postoperatively in cardiacsurgery patients, adding up to postoperative mortality and morbidity.

“Delirium is defined as an acute and overt change incognition and attention which may include alteration in consciousness anddisorganized thinking.â€

The unfavorable outcomes that follows post-operativedelirium includes prolonged hospitalization, increased rates of delayedinstitutional discharge, persistent functional and cognitive deficits,increased 30-day and 5-year mortality.This results in a substantial increase incost to the system.

According to current estimates, the incidence ofpostoperative delirium is 1 in 5 cardiac surgery patients .This necessitatespredicting patients susceptible to delirium preoperatively, so as to diagnoseand treat delirium early hence reducing post-operative morbidity.

There are different methods to predict patients susceptibleto delirium; one of such method is assessing frailty.

Frailty is defined as a state of decreased physiologicalreserves due to multisystem decline, which leaves patients in a state ofincreased vulnerability

Frailty consorts with multiple undesirable outcomes likecognitive decline, falls, fractures, and progressive disability in activitiesof daily living.

Presence of frailty increases the risk for post-operativecomplications of cardiac surgery such as inhospital mortality, institutional discharge,and reduced mid-term survival.

In this study, we would be doing a prospective observationalstudy to determine the effect of frailty on postoperative delirium in cardiacsurgery patients.

Frailty would be assessed by using following criteria:

1. The Fried criteria

2. Edmonton Frail Scale

3. Short physical performance battery

4. 35-item frailty index

And delirium would be assessed by usingConfusion assessment method (CAM)