Recent advances in geriatric anaesthesia.

The World Health Organization defines healthy ageing as 'the process of developing and maintaining the functional ability that enables well-being in older age'. This functional ability is the characteristic of the individual's own physical and mental status influenced by the environmental and socio-economic factors. Preoperative preparation of the elderly patients includes functional assessment to identify preexisting cognitive impairment or cardio-pulmonary reserve, frailty, nutrition, polypharmacy and anti-coagulation issues.