The effect of a preanaesthesia clinic consultation on adult patient anxiety in Aga Khan University hospital; a cohort study
Date of Award
Master of Medicine (MMed)
Anaesthesiology (East Africa)
Background: Preoperative anxiety is a common perioperative complication, according to studies done it is seen in approximately 11-80% of adults undergoing surgery. Various pharmacological and non pharmacological techniques have been used to reduce preop anxiety.
One of the goals of the preanaesthesia clinic is to allay anxiety. Literature shows that a preanaesthesia clinic evaluation reduces anxiety however b current studies done on anxiety and the preanaesthesia clinic have not quantified this reduction.
Objective: To determine the reduction in anxiety in patients evaluated in the clinic versus those evaluated in the ward.
Study Design: A cohort and before – after study
Setting: The surgical outpatient clinics, the gynaecological outpatient clinic, the antenatal clinic, the wards and operating theatres at the Aga Khan University Hospital, Nairobi.
Population: All the adult patients scheduled for non-cardiac elective surgical procedures during the study period.
Sample size: 44 adult patients with 22 patients in each of the 2 groups i.e. anaesthesia clinic (AC) group and the ward group (W).
Methods: 51 adult patients with 28 patients in anaesthesia clinic group and another 23 in the ward were sequentially recruited from both the surgical outpatient clinic, gynaecology outpatient clinic and antenatal clinic. The patient’s State Trait Anxiety Index (STAI) was taken once the patient was booked for theatre. The patient then had a preanaesthesia evaluation either in the preanaesthesia outpatient clinic (PAC) or in the wards.
Another STAI score was taken in the preoperative area in theatre on the day of surgery. The patients were then traced back as to whether they had their intervention in the ward or the clinic and hence divided into two groups. The difference in the change of STAI scores in both groups was then analysed.
Results: 51 adult patients were recruited i.e. 28 in the clinic group and 23 in the ward group. The majority of the recruited patients were female (n=38).
Statistically significant difference was seen in the reduction of the anxiety scores between the clinic group 2.143(C.I=1.384-2.902) and ward group
0.739(C.I=0.168-1.311) with a p value=0.0051.There was also significant difference in reduction in anxiety scores within ward group in the patients with no prior anaesthetic experience having a greater reduction than those a prior anaesthetic experience. There were no other significant differences between the 2 groups.
Conclusion: Patients evaluated in the anaesthesia clinic had a greater reduction in their anxiety but it was not as much as hypothesised which may be due to the multi-factorial nature of preoperative anxiety. A larger multicentre study is recommended to increase generalisabilty to the population.
Kamau, A. (2014). The effect of a preanaesthesia clinic consultation on adult patient anxiety in Aga Khan University hospital; a cohort study (Unpublished master's dissertation). Aga Khan University, East Africa.