Robotic catheter minimally invasive operation requires that the driver control system has the advantages of quick response, strong anti-jamming and real-time tracking of target trajectory. Since the catheter parameters of itself and movement environment and other factors continuously change, when the driver is controlled using traditional proportional-integral-derivative (PID), the controller gain becomes fixed once the PID parameters are set. It can not change with the change of the parameters of the object and environmental disturbance so that its change affects the position tracking accuracy, and may bring a large overshoot endangering patients' vessel. Therefore, this paper adopts fuzzy PID control method to adjust PID gain parameters in the tracking process in order to improve the system anti-interference ability, dynamic performance and tracking accuracy. The simulation results showed that the fuzzy PID control method had a fast tracking performance and a strong robustness. Compared with those of traditional PID control, the feasibility and practicability of fuzzy PID control are verified in a robotic catheter minimally invasive operation.
Objective To evaluate the changes of right ventricular function in patients with obstructive sleep apnea hypopnea syndrome (OSAHS) before and after continuous positive airway pressure (CPAP) treatment by two-dimensional speckle tracking imaging (2D-STI). Methods Fifty patients with moderate and severe OSAHS were selected for CPAP treatment, and another 40 healthy volunteers were selected as a control group. 2D-STI and traditional echocardiography were conducted in the study group before treatment, after 3 months of continuous treatment and after 6 months of continuous treatment and in the control group. Results The differences between the control subjects and the OSAHS patients were statistically significant in right ventricular global longitudinal strain (RVGLS), right ventricular free lateral wall longitudinal strain (RVLLS), apical segment of the right ventricular free wall longitudinal strain (Apical RV-SL), basal segment of the right ventricular free wall longitudinal strain (Basal RV-SL), and media segment of the right ventricular free wall longitudinal strain (Media RV-SL) (all P<0.05). RVGLS, RVLLS and Apical RV-SL were significantly improved after 3 months of CPAP treatment (all P<0.05). Basal RV-SL was significantly improved after 6 months of CPAP treatment (P<0.05). Conclusions The right ventricular function of patients with OSAHS is abnormal. CPAP treatment can improve the right ventricular function of OSAHS patients. 2D-STI can accurately assess the changes of right ventricular function.
Objective To explore the advantages of postoperative chest drainage with 16F urinary catheter for video- assisted thoracoscopic surgery (VATS) lobectomy.
Methods Data of 102 patients (October to December 2015) who under- went VATS lobectomy of lung disease with insertion of catheter (16 F urinary catheter or 28 F chest tube) were analyzed. The patients were divided into two groups including a 16F group (49 patients, with 16 F urinary catheter) and a 18F group (53 patients, with 18F chest drainage tube).The following post-operative data were evaluated: primary healing of tube inci- sion, chest X ray abnormalities (pneumothorax, pleural effusion, subcutaneous emphysema, and hematoma), drainage time, re-insert the drainage tube, and wound healing at the site of insertion.
Results Both groups were similar in age, gender, co-morbidity and pathological evaluation of resected specimens. After adjustment, no statistically significant difference was found between the two groups in pulmonary complications (30.6% vs. 28.3%, P=0.102), subcutaneous emphysema (60.0% vs. 6.7%, P=0.011), required intervention (2.0% vs. 5.7%, P=0.048). The average total drainage volume in the 16F group (587.3±323.7 ml) was less than that of the 28 F group (824.1±444.3 ml, P=0.000). The rate of primary healing at the site of insertion in the 16 F group (100.0%) was higher than that in the 28F group (58.5%, P=0.014). A significant difference was found in the drainage time and post-operative length of stay between the two groups (54.2±28.6 h vs. 95.6±65.5 h，4.2±1.4 d vs. 6.5±3.0 d).
Conclusion Since 16F urinary catheter has advantage in fast track rehabilitation and low risk of pulmonary complications, the use of 16F urinary catheter is appropriate after VATS pulmonary lobectomy.
Objective To investigate the application progress of postoperative fluid administration in colorectal surgery. MethodsLiteratures about the advancement of fluid administration in colorectal surgery were reviewed and analyzed. Results Compared to standard fluid management, restrictive fluid administration could reduce the incidence of complications, the length of stay in hospital and improve postoperative survival rate. Colloid-crystalloid combined therapy was better than that pure crystal therapy. Conclusion Volume and type of rehydration influence postoperative recovery, which is also considered in “fast track” colorectal surgery.
Objective To compare the short-term outcomes between laparoscopic surgery and open surgery with fast-track (FT) in patients with colorectal cancer. Methods Between February 2008 and August 2008, the clinical data of 177 patients with colorectal cancer were analyzed retrospectively, who were divided into open group (n=122) and laparoscopic group (n=55) by surgery methods. Open group was further divided into FT group (n=66) and traditional group (n=56). Early rehabilitations were studied and compared among three groups. Results ① The baseline characteristics of patients among three groups were no significant differences (Pgt;0.05) exclude operation time. ② In early rehabilitation, the first flatus of patients in both the FT group 〔(3.86±1.01) d〕 and the laparoscopic group 〔(3.78±1.10) d〕 was significantly earlier than that in the traditional group 〔(4.43±1.25) d〕, Plt;0.05. ③ The first oral intaking in the FT group 〔(2.52±1.14) d〕 was earlier than that in the traditional group 〔(3.38±1.43) d〕 and the laparoscopic group 〔(5.04±2.24) d〕, Plt;0.05, while in the traditional group was earlier than that in the laparoscopic group (Plt;0.05). ④ For drainage management, both the FT group and the traditional group were significantly earlier than those in the laparoscopic group (Plt;0.05). ⑤ For postoperative hospital stay, in the FT group 〔(8.33±1.98) d〕 was also much shorter than that in the laparoscopic group 〔(10.55±3.14) d〕 and the traditional group 〔(10.82±3.76) d〕, Plt;0.05. ⑥ For the postoperative complications, there was no significant difference among three groups (Pgt;0.05). Conclusions FT surgery and laparoscopic technique could both enhance recovery of bowel function, and FT could also shorten postoperative hospital stay. However, further studies are needed to develop a better management.
ObjectiveTo investigate the impact of chronic obstructive pulmonary disease (COPD) and surgical approach on postoperative fast track recovery and hospitalization cost of patients undergoing lung cancer resection, and explore clinical pathways and clinical value of fast track recovery.
MethodClinical data of 129 consecutive patients undergoing lung cancer resection by one surgical group in West China Hospital from January 2010 to March 2011 were retrospectively analyzed. According to whether the patients had concomitant COPD, all the patients were divided into COPD group including 53 patients (39 males and 14 females) with their average age of 56.31±10.51 years, and non-COPD group including 76 patients (37 males and 39 females) with their average age of 65.92±7.85 years. According to different surgical approaches, all the patients were divided into complete video-assisted thoracoscopic surgery (VATS) group including 83 patients (44 males and 39 females) with their average age of 61.62±10.80 years, and routine thoracotomy group including 46 patients (32 males and 14 females) with their average age of 62.95±9.97 years. Postoperative morbidity, average hospital stay and hospitalization cost were compared between respective groups.
ResultsThere was no statistical difference in postoperative morbidity (53% vs. 40%, P=0.134)or average hospital stay[(7.66±2.95) days vs. (7.36±2.74)days, P=0.539] between COPD group and non-COPD group. Postoperative morbidity (34% vs. 65%, P < 0.001)and average hospital stay[(6.67±2.52)days vs. (8.61±3.01) days, P < 0.001] of VATS group were significantly lower or shorter than those of routine thoracotomy group. Total hospitalization cost (￥44 542.26±11 447.50 yuan vs. ￥23 634.13±6 014.35 yuan, P < 0.001) and material cost (￥37 352.53±11 807.81 yuan vs. ￥12 763.08±7 124.76 yuan, P < 0.001) of VATS group were significantly higher than those of routine thoracotomy group. Average medication cost of VATS group was significantly lower than that of routine thoracotomy group (￥7 473.54±4 523.70 vs. ￥10 176.71±6 371.12, P < 0.001). There was no statistical difference in other cost between VATS group and routine thoracotomy group.
ConclusionVATS lobectomy can promote postoperative fast track recovery of lung cancer patients, but also increase material cost of the surgery. COPD history does not influence postoperative fast track recovery or hospitalization cost.
Objective
To verify the feasibility and effectiveness of the modified fast-track surgery (FTS) in the perioperative period of open liver resection.
Methods
A prospective randomized controlled trial was carried out in 188 consecutive patients undergoing open liver resection between March and December 2014 in the Department of Liver Surgery of West China Hospital. The modified fast recovery procedure and standard rehabilitation procedure were compared in terms of length of hospital stay after operation, hospitalization cost, complications and readmission rate.
Results
A total of 188 consecutive patients were enrolled in the trial. The analysis included 87 patients in the modified fast recovery group and 89 in the standard rehabilitation group. Compared with the standard rehabilitation group, the modified fast recovery group had a shorter length of hospital stay [(5.70±1.47)vs. (7.26±1.96) days] and a lower cost [(42.7±6.7)vs. (47.3±12.5) thousand yuan], and the differences were statistically significant (P<0.05). There were 20 complication cases in the modified group and 39 in the standard group with significant difference (P=0.003). There was no significant difference in the rate of readmission between the two groups (P=1.000). Compared with the standard group, patients in the modified group had less pain 8 hours, the 1st and 2nd days after surgery, better postoperative activities of daily living, more initiative cough times and off-bed activity times, longer duration of movement, and earlier bowel recovery and exhausting, and all the above differences were significantly different (P<0.05). Stepwise regression analysis showed that postoperative complications and bowel recovery and exhausting time were independent related factors for postoperative hospital stay (P<0.001).
Conclusions
Multimodal analgesia-based fast recovery procedure is feasible and effective in the perioperative period of partial hepatectomy. It can shorten the time of hospitalization and reduce the cost of hospitalization.
Objective
To analyze the outcome of fast track surgery after intercostal nerve block (INB) during thoracoscopic resection of lung bullae.
Methods
We recuited 76 patients who accepted thoracoscopic resection of lung bullae from February 2013 to March 2015. They were randomly divided into two groups: an intercostal nerve block and intravenous patient-controlled analgesia (INB+IPCA) group, in which 38 patients (30 males, 8 females, with a mean age of 23.63±4.10 years) received INB intraoperatively and IPCA postoperatively, and a postoperative intravenous patient-controlled analgesia (IPCA) group, in which 38 patients (33 males, 5 females, with a mean age of 24.93±6.34 years) only received IPCA postoperatively. Their general clinical data and the postoperative pain visual analogue scale (VAS) were recorded. Analgesia-associated side effects, rate of the pulmonary infection were observed. Expenses associated with analgesia during hospital were calculated.
Results
The score of VAS, the incidence of nausea and vomiting, fatigue and other side effects, pulmonary atelectasis and the infection rate in the INB+IPCA group were significantly lower than those in the IPCA group. Postoperative use of analgesic drugs was significantly less than that in the IPCA group. Medical expenses did not significantly increase.
Conclusion
INB+IPCA is beneficial for fast track surgery after thoracoscopic resection of lung bullae.
ObjectiveTo analyze the effectiveness of fast track protocol of geriatric intertrochanteric fracture on operative waiting time, operation time, perioperative blood loss, providing data support for clinical therapy.MethodsThe clinical data of 240 elderly patients with intertrochanteric fracture admitted between January 2015 and December 2018 were retrospectively analyzed. They were divided into traditional protocol group (148 cases, group A) and fast track group (92 cases, group B). All patients were treated with closed reduction intramedullary nail (proximal femoral nail antirotation) surgery. There was no significant difference in gender, age, sides, fracture classification, fracture type, complications, the proportion of patients with more than 3 kinds of medical diseases, and the time from injury to admission between the two groups (P>0.05). Analysis index included operative waiting time (hospitalization to operation time), operation time, percentage of operation performing in 48 and 72 hours, percentage of transfusion, changes of hematocrit (Hct) at different stage (admission, operation day, and postoperative 1, 3 days), blood loss by fracture and cephalomedullary nail, intraoperative dominant blood loss, total blood loss in perioperative period were recorded and compared.ResultsThe operative waiting time, operation time, Hct on operation day and postoperative 3 days, blood loss by fracture, transfusion volume, and total blood loss in perioperative period in group B were significantly less than those in group A (P<0.05), and the percentage of operation performing in 48 and 72 hours in group B were significantly higher than those in group A (P<0.05). There was no signifcant difference in Hct on admission and postoperative 1 day, intraoperative dominant blood loss, percentage of transfusion, blood loss by cephalomedullary nail between the two groups (P>0.05).ConclusionFast track can shorten the operative waiting time of geriatric intertrochanteric fracture, reduce the blood loss by fracture, total blood loss in perioperative period, and transfusion volume. Early operation is conducive to improve the anemia status of patients during perioperative period.
ObjectiveTo investigate the feasibility and effectiveness of fast track surgery (FTS) in rib fracture fixation.
MethodsFifty-two patients with chest trauma who underwent rib fracture fixation surgery in Mingji Affiliated Hospital of Nanjing Medical University from October 2010 to June 2013 were enrolled in this study. All the patients were divided into FTS group and control group. In the FTS group, there were 26 patients including 22 males and 4 females with their age of 45.62±8.20 years, who received FTS strategies. In the control group, there were 26 patients including 21 males and 5 females with their age of 46.42±7.60 years, who received traditional treatment strategies. Postoperative visual analogue scale (VAS), gastrointestinal function recovery time, postoperative hospital stay and hospitalization cost were compared between the 2 groups.
ResultsVAS at 6 hours, 24 hours and 48 hours postoperatively of FTS group (4.5±0.3, 4.2±0.2, 3.2±0.1) were significantly lower than those of the control group (6.5±0.1, 6.1±0.3, 4.8±0.2) respectively (P < 0.05). Gastrointestinal function recovery time of FTS group (0.8±0.2 days) was significantly shorter than that of the control group (1.5±0.5 days, P < 0.05). Length of hospital stay (21.0±2.6 days) and hospitalization cost (5.18±0.75 ten thousand yuan) of FTS group were significantly shorter or lower than those of the control group (26.2±3.4 days and 5.78±0.64 ten thousand yuan) respectively (P < 0.05).
ConclusionFTS strategies can effectively reduce postoperative VAS, shorten length of hospital stay, decrease hospitalization cost, and promote postoperative recovery of rib fracture patients.
