Background Pre-operative anxiety is common and is associated with negative surgical outcomes. Virtual reality (VR) is a promising new technology that offers opportunities to modulate patient experience and cognition and has been shown to be associated with lower levels of anxiety. In this study, we investigated changes in pre-operative anxiety levels before and after using VR in patients undergoing minor gynecological surgery. Methods Patients who underwent elective minor gynecological surgeries in KK Women’s and Children’s hospital, Singapore were recruited. The VR intervention consisted of 10-min exposure via a headset loaded with sceneries, background meditation music and breathing exercises. For the primary outcome of pre-operative anxiety, patients were assessed at pre- and post-intervention using the Hospital Anxiety and Depression Scale (HADS). Secondary outcomes of self-reported satisfaction scores and EuroQol 5-dimension 3-level (EQ-5D-3L) were also collected. Results Data analysis from 108 patients revealed that HADS anxiety scores were significantly reduced from 7.2 ± 3.3 pre-intervention to 4.6 ± 3.0 post-intervention (p < 0.0001). Furthermore, HADS depression scores were significantly reduced from 4.7 ± 3.3 pre-intervention to 2.9 ± 2.5 post-intervention (p < 0.0001). Eighty-two percent of the patients self-reported VR intervention as ‘Good’ or ‘Excellent’. EQ-5D-3L showed significant changes in dimensions of ‘usual activities’ (p = 0.025), ‘pain/discomfort’ (p = 0.008) and ‘anxiety/ depression’ (p < 0.0001). Conclusions For patients undergoing minor gynecological procedures, the VR intervention brought about a significant reduction in pre-operative anxiety. This finding may be clinically important to benefit patients with high pre-operative anxiety without the use of anxiolytics. Trial registration This study was registered on clinicaltrials.gov registry (NCT03685422) on 26 Sep 2018.
Background Ultrasonography for neuraxial anesthesia is increasingly being used to identify spinal structures and the identification of correct point of needle insertion to improve procedural success, in particular in obesity. We developed an ultrasound-guided automated spinal landmark identification program to assist anesthetists on spinal needle insertion point with a graphical user interface for spinal anesthesia. Methods Forty-eight obese patients requiring spinal anesthesia for Cesarean section were recruited in this prospective cohort study. We utilized a developed machine learning algorithm to determine the needle insertion point using automated spinal landmark ultrasound imaging of the lumbar spine identifying the L3/4 interspinous space (longitudinal view) and the posterior complex of dura mater (transverse view). The demographic and clinical characteristics were also recorded. Results The first attempt success rate for spinal anesthesia was 79.1% (38/48) (95%CI 65.0 - 89.5%), followed by successful second attempt of 12.5% (6/48), third attempt of 4.2% (2/48) and 4th attempt (4.2% or 2/48). The scanning duration of L3/4 interspinous space and the posterior complex were 21.0 [IQR: 17.0, 32.0] secs and 11.0 [IQR: 5.0, 22.0] secs respectively. There is good correlation between the program recorded depth of the skin to posterior complex and clinician measured depth (r = 0.915). Conclusions The automated spinal landmark identification program is able to provide assistance to needle insertion point identification in obese patients. There is good correlation between program recorded and clinician measured depth of the skin to posterior complex of dura mater. Future research may involve imaging algorithm improvement to assist with needle insertion guidance during neuraxial anesthesia. Trial registration This study was registered on clinicaltrials.gov registry (NCT03687411) on 22 Aug 2018.
Pre-operative association factors (pain and psychological vulnerability) could significantly contribute to post-Cesarean pain; however, limited information is available on the development of postnatal depression (PND). We aimed to investigate the development of PND and its association with pain vulnerability and psychological vulnerability factors. Patients and Methods: Women undergoing Cesarean delivery under spinal anesthesia were given pre-operative questionnaires, psychological and pain assessments including pain on local anesthetic injection during spinal anesthesia and mechanical temporal summation. Post-operative assessments were administered at 6 to 10 weeks post-Cesarean delivery via follow-up survey to assess post-Cesarean psychological and pain outcomes. Results: PND occurred in 21.1% (43 of 205) of patients who underwent elective Cesarean delivery. An increased pre-operative pain score with movement (Odds ratio (OR) 1.65, 95% CI 1.12-2.44, p = 0.0110), anxiety about upcoming surgery (OR 1.02, 95% CI 1.00-1.04, p = 0.0429), higher pre-operative Hospital Anxiety and Depression Scale (HADS) subscale on anxiety (OR 1.25, 95% CI 1.07-1.45, p = 0.0041) and higher pre-operative central sensitization inventory (CSI) scores (OR 1.05, 95% CI 1.01-1.09, p = 0.0156) were independently associated with an increased risk of PND. Anticipated pain medication needs were associated with reduced risk of PND (OR 0.48, 95% CI 0.29-0.79, p = 0.0038) (Receiver operating characteristic (ROC) = 0.8177). Conclusion: Higher pre-operative anxiety, pain score, central sensitization and lower anticipated pain medication needs were associated with increased risks of PND. Further work using larger sample size will be needed to validate the model in predicting PND development after Cesarean delivery.
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