The aim of this quasi-experimental study was to examine the effect of lavender aromatherapy on delirium in patients who underwent fracture surgery, were in intensive care, and were over 60 years old.

The main question of the study was, does lavender aromatherapy affect delirium scale scores? In order to examine the effect of lavender oil on delirium, the researcher will provide routine care to one group and apply aromatherapy to the other group.

Both groups will be evaluated by the researcher at eight-hour intervals with the Nu-DESC delirium screening scale and the results will be compared.

The American Nurses Association has defined delirium as "acute, serious, and often preventable conditions that are usually accompanied by confusion, dehydration, or attacks on some system followed by confusion and a distressing course of life". The incidence of delirium in the postoperative period is quite high and delirium has been associated with longer intensive care unit or hospital stays, higher hospital costs, and increased mortality. Delirium is especially risky in elderly and critically ill patients. Although postoperative delirium is tried to be treated using medication, nonpharmacological prevention methods are considered the most important part of the treatment. One of these methods is aromatherapy and has recently been widely used in nursing research. The smell of waste caused by patients' sweating, urinary and fecal incontinence, bleeding, and antiseptics such as povidone iodide, chlorhexidine, alcohol, and other drugs used during the treatment process creates a hospital-specific odor. Hospital odor is also associated with poor perception of treatment and care. It is thought that it would be beneficial to put an aromatic essential oil such as lavender oil in the environment. The positive effects of aromatherapy with lavender oil on anxiety, stress, pain, sleep quality, nausea and vomiting, as well as its sedative, emotionally calming, antiseptic, analgesic and antispasmodic properties have been demonstrated by studies. Essential oils are considered safe to use because they have minimal side effects. Postoperative delirium is a common complication following hip fracture surgery in the elderly. It has been observed that studies on the development of delirium in the intensive care unit were mostly conducted with patients who underwent cardiovascular surgery. This study will be carried out to determine how lavender oil aromatherapy left in the environment to prevent delirium, which can have serious consequences in the elderly with postoperative fractures, affects delirium scores.

Inclusion Criteria:

• Having had surgery for a fracture and being treated in the ICU
• Being 60 years of age or older
• Having a first measured Nu-Desc score of less than 2
• Having a Glasgow coma scale score of >13
• Being able to speak and understand Turkish

Exclusion Criteria:

• Having trouble smelling
• Being intubated
• Having asthma, COPD or any respiratory disorder
• Having been previously diagnosed with delirium
• Having other cognitive disorders such as Alzheimer's or dementia
• The patient needs to be physically restrained.
• Having multiple fractures.