Machine Learning-Based Approach to Predict Last-Minute Cancellation of Pediatric Day Surgeries.

The last-minute cancellation of surgeries profoundly affects patients and their families. This research aimed to forecast these cancellations using EMR data and meteorological conditions at the time of the appointment, using a machine learning approach. We retrospectively gathered medical data from 13 440 pediatric patients slated for surgery from 2018 to 2021. Following data preprocessing, we utilized random forests, logistic regression, linear support vector machines, gradient boosting trees, and extreme gradient boosting trees to predict these abrupt cancellations. The efficacy of these models was assessed through performance metrics. The analysis revealed that key factors influencing last-minute cancellations included the impact of the coronavirus disease 2019 pandemic, average wind speed, average rainfall, preanesthetic assessments, and patient age. The extreme gradient boosting algorithm outperformed other models in predicting cancellations, boasting an area under the curve value of 0.923 and an accuracy of 0.841. This algorithm yielded superior sensitivity (0.840), precision (0.837), and F1 score (0.838) relative to the other models. These insights underscore the potential of machine learning, informed by EMRs and meteorological data, in forecasting last-minute surgical cancellations. The extreme gradient boosting algorithm holds promise for clinical deployment to curtail healthcare expenses and avert adverse patient-family experiences.

A procedure and device for determining complex material permittivity using the free-space resonance method.

The essential technologies of the complex permittivity of microwave dielectric materials are systematically designed, and the complex permittivity of materials is tested nondestructively by the free-space resonance method. A testing system was built by using a mobile surveying platform, and the complex dielectric constant of the material in the X band was nondestructively tested by using the algorithm of variable physical cavity length and constant physical cavity length. Focusing on the impact of variable physical cavity length on the test results, the cavity calibration technology is proposed to reduce the influence on the complex dielectric constant test of materials. The free-space resonance method was used to test the complex permittivity of polytetrafluoroethylene, glass steel plate (fiber reinforced plastics), and corundum plate. The results show that the test results of complex permittivity obtained by the two algorithms are consistent, and the error of complex permittivity is less than 5%.

Effects of an Individualized Fasting Program on Fasting Time and Comfort in Infants and Young Children During the Perioperative Period.

PURPOSE: The study was designed to evaluate the effect of an individualized fasting program on fasting time and comfort in infants and young children during the perioperative period. DESIGN: A quasiexperimental design was used. METHODS: The study included 675 children (intervention = 353, control = 322). Data collection tools included Characteristics of Children Form and the Infant Hunger Rating Scale. The fasting program included individualized fasting education and fasting in batches. On the day of the operation, clear liquids were fed 2 hours before surgery and refed after the patient woke after surgery. FINDINGS: The duration of perioperative fasting and the time to refeeding were shorter, the hunger scores were lower in the intervention group than those in the control group (P < .05). There was no difference in the incidence of vomiting between the two groups (P > .05), and no coughing and bloating occurred. CONCLUSIONS: The fasting program for infants and young children can shorten the duration of fasting and can reduce the degree of hunger. This program is safe and feasible.

Monitoring of home recovery using the 317-nursing mobile application following day-case surgery in children: Perspectives from both nurses and patients.

The number of elective day-case surgeries has considerably increased in recent years, especially in China. Few studies have investigated the ability of mobile applications to assist recovery for patients having undergone day-surgery; however, these studies have indicated that the use of mobile applications is cost-efficient and has a positive effect on recovery after surgery. This study aimed to evaluate the utility and efficacy of using the 317-nursing mobile application program (317NAPP) for monitoring home recovery following day-surgery involving high ligation of the hernial sac in pediatric patients.Prospective clinical study involving 2 parallel groups.Patients were randomly divided into the "intervention 317NAPP group" (n = 64) and the control group (n = 63). Patients were followed-up using the 317NAPP in the intervention group and via telephonic consultations in the control group. All patients were enrolled after being provided sufficient guidance with respect to discharge and health education. The health index, including the physiological function, ability to perform daily activities, and the injury response, was evaluated before and 24 hours after surgery. The time duration of each follow-up session was also evaluated in both groups.The preoperative (T1) health index scores were significantly higher than the postoperative (T0) ones in both groups (P = .00). The quality of recovery (T1-T0) of the intervention group (10.75 ±â€Š5.28) was better than that of the control group (11.78 ±â€Š5.16), but the differences were not significant (P = .27). In the intervention group, the follow-up time duration was significantly lower in comparison to that in the control group (P = .00).This study demonstrated that 317NAPP had a positive effect on recovery following day-surgery, and the time-duration for follow-up was shorter than that performed using telephonic consultation. Monitoring recovery using 317NAPP was safe, efficient, inexpensive, and relatively easy; therefore, it may help improve the recovery of patients having undergone day-surgery.

Effect of inguinal hernia on the thickness and blood flow of spermatic cord in boys.

Objective: To evaluate the effect of inguinal hernia (IH) on the spermatic cord using spermatic cord ultrasonography (SCU). Methods: From January 2016 to January 2017, boys with IH who received SCU at the start of open herniorrhaphy (OH) were enrolled in this study. The age and weight at SCU, width of the spermatic cord (SC-W), peak systolic velocity (PSV) in the spermatic artery (SA-PSV) and velocity in the pampiniform plexus (PP-V), and the interval between the initial and the second OH in boys with metachronous inguinal hernia (MIH) were recorded, and the relationship among them was studied. Boys with unilateral IH comprised the IH group, and boys with MIH comprised the MIH group. Boys with polydactylism served as the control. One-way analysis of variance tested the differences among groups. Spearman's r tested the relationship between SC-W in the MIH group and the interval. Results: A total of 80 boys were enrolled in this study (IH group 29, MIH group 26, and control group 25). SA-PSV and PP-V in the hernia side were faster and slower than the control, respectively. There was no significant difference in PP-V and SA-PSV of the treated side in the MIH group and in the control group. After herniorrhaphy, SC-W was tapered down to normal size. SC-W, SA-PSV, and PP-V in the treated side were all highly correlated to the interval in a curvilinear manner. Conclusion: PSV was positively correlated with SC-W in boys with IH, and PP-V was negatively correlated; herniorrhaphy could reverse the impairment.

Pre-operative Spermatic Cord Ultrasonography Helps to Reduce the Incidence of Metachronous Inguinal Hernia in Boys.

Background/purpose: Thickening of the spermatic cord is a clinical sign of an inguinal hernia. We therefore tested whether pre-operative spermatic cord ultrasonography could reduce the incidence of metachronous inguinal hernia (MIH). Methods: Boys under 2 years old with an initial unilateral inguinal hernia were enrolled in this study. In whom the width of the asymptomatic-sided spermatic cord was ≥0.5 cm, these patients underwent contralateral groin exploration. Age at initial operation, weight, initial operation side, the sonographic width of the spermatic cord, the operative findings and presence of MIH were recorded, and the relationship among them was studied. Boys in the US group underwent an open herniorrhaphy with pre-operative ultrasound examination; the non-US group included boys who did not undergo a pre-operative ultrasound examination. A receiver operator curve (ROC) analysis was performed to evaluated predictive value of the sonographic width of the spermatic cord for contralateral hernia. Results: A total of 24 months' follow-up data were obtained from 1,793 boys (US group 1,162, non-US group 631). In the US group, the width of the hernia-sided spermatic cord (0.75 ± 0.18 cm) was larger than the normal side (0.37 ± 0.05 cm, P < 0.001). And the width of normal side spermatic cord had no significant difference between the groups regarding other factors such as age and weight. In whom the width of the asymptomatic-sided spermatic cord was ≥0.5 cm, the corresponding incidence of CIH was 86.4% (57/66). The width of the spermatic cord predicted the presence of contralateral hernia with ROC area under the curve = 0.943 (95% CI = 0.919-0.966). The total incidence of MIH was 4.1% (74/1793). The incidence of MIH in the US group was 2.2% (25/1162) much lower than 7.8% (49/631) in the non-US group (P < 0.001). If the width of the asymptomatic-sided spermatic cord was 0.5 cm and 0.54 cm, the corresponding sensitivity was 0.682 and 0.294, respectively, the corresponding specificity was 0.991 and 1.000, respectively. Conclusion: If the width of the asymptomatic-sided spermatic cord of boys with initial unilateral inguinal hernia sonographic width was ≥0.5 cm, contralateral groin exploration was recommended, and it help to reduce the incidence of MIH.