RESULTS
In the preoperative period, we evaluated 87 patients, among which 17
(19.5%) were excluded because of an MMSE < 24. The
demographic characteristics of the patients are summarized in Table 1.
The general and spinal anesthesia groups were similar in terms of mean
age, BMI, distribution of gender, ASA scores, and comorbidity
percentages (p > 0.05).
The intraoperative characteristics are summarized in Table 2. In the
spinal anesthesia group, the duration of operation was significantly
longer compared to the general anesthesia group (p = 0.003) .
The intraoperative mean arterial pressure, SpO2, heart
rate levels, and postoperative length of hospital stay were similar
between groups.
The postoperative MMSE scores were significantly lower than the
preoperative scores only in the general anesthesia group (p = 0.003),
while the postoperative MoCA scores were lower than the preoperative
scores in both the general and spinal anesthesia groups (p = 0.000 and
0.019, respectively, as seen in Table 3). The intraclass correlation
coefficient (ICC) between the MMSE and MoCA was found to be
statistically significant (p < 0.01; Table 4).
According to the postoperative MoCA measurements, the incidence of POCD
(MoCA < 21) 17 was similar between the
general and spinal anesthesia groups (31.9% [n = 15] and 34,7%
[n = 8], respectively, with p = 0.810) and the overall incidence was
32.9% (n = 23). The gender distribution was similar between POCD and
normal patients (the F/M [n%] ratios were 6/17 [21.6%/73.9%]
and 7/39 [15.2%/84.8%], respectively, with p = 0.334). The mean
age, duration of operation, and postoperative laboratory parameters were
also similar between the POCD group (MoCA < 21) and normal
group (MoCA ≥ 21) (Table 5).