Objective:To examine the efficacy and experience of staged and segmented two hybrid surgeries for total repair of Debakey type Ⅰ aortic dissection (TIAD).Methods:This study was a retrospective case series. The clinic data of 10 patients with acute TIAD who were admitted to the Department of Cardiac Surgery, Second Hospital of Lanzhou University or the First People′s Hospital of Lanzhou, between January 2016 and August 2022, were retrospectively studied. Ten patients underwent hybrid surgeries in two hospitalizations (stages), including 7 males and 3 females with an age of (60±7) years (range: 49 to 71 years). In stage 1, the first type Ⅱ hybrid arch repair was performed to treat the ascending, total arch, and descending thoracic aorta for acute TIAD without circulatory arrest. In stage 2, the second hybrid surgery including infrarenal abdominal aorta replacement, visceral arteries bypass and endovascular thoracoabdominal aortic repair was performed to treat residual thoracoabdominal aortic dissection after the first hybrid operation (segmented). Basic data, preoperative concomitant diseases, high-risk factors, surgical approaches and postoperative complications of all important organs, as well as CT imaging were analyzed.Results:There was no death in the 20 hybrid surgical procedures. In stage 1 type Ⅱ hybrid surgery, 4 cases underwent reconstruction of the aortic sinutubular junction, while Bentall and David surgery was performed for 3 cases, respectively. A patient received coronary artery bypass grafting. Then all patients were sequentially treated with arch debranching and thoracic aortic endovascular repair. Postoperative complications included renal insufficiency (4/10), hemofiltration (1/10), hypoxemia (4/10), neurologic event (1/10) and type Ⅱ endoleak (1/10). Complete false lumen thrombosis occurred in 9/10 of the patients. All complications recovered successfully at discharge and the average hospital stay was (21±4) days (range: 16 to 28 days) in the first hospitalization. At stage 2, the second hybrid surgery was successfully performed in all patients. No paraplegia, hepatic or renal insufficiency, or endoleak occurred. However, branch graft embolism of the left renal artery was found in one patient 3 days after laparotomy, as well as of superior mesenteric artery in another. Superior mesenteric artery occlusion was successfully treated by endovascular recanalization. Complete false lumen thrombosis occurred in all patients. Although all patients had different degrees of intestinal dysfunction, they were gradually relieved at discharge, and the average hospital stay was (19±2)days (range:16 to 21 days) in the second hospitalization. During follow-up, CT angiography showed aortic remodeling in all patients.Conclusion:Staged and segmented two hybrid surgeries are safe and feasible for total repair of Debakey type Ⅰ aortic dissection and are associated with acceptable early and midterm outcomes.

Objective:To examine the efficacy and experience of staged and segmented two hybrid surgeries for total repair of Debakey type Ⅰ aortic dissection (TIAD).Methods:This study was a retrospective case series. The clinic data of 10 patients with acute TIAD who were admitted to the Department of Cardiac Surgery, Second Hospital of Lanzhou University or the First People′s Hospital of Lanzhou, between January 2016 and August 2022, were retrospectively studied. Ten patients underwent hybrid surgeries in two hospitalizations (stages), including 7 males and 3 females with an age of (60±7) years (range: 49 to 71 years). In stage 1, the first type Ⅱ hybrid arch repair was performed to treat the ascending, total arch, and descending thoracic aorta for acute TIAD without circulatory arrest. In stage 2, the second hybrid surgery including infrarenal abdominal aorta replacement, visceral arteries bypass and endovascular thoracoabdominal aortic repair was performed to treat residual thoracoabdominal aortic dissection after the first hybrid operation (segmented). Basic data, preoperative concomitant diseases, high-risk factors, surgical approaches and postoperative complications of all important organs, as well as CT imaging were analyzed.Results:There was no death in the 20 hybrid surgical procedures. In stage 1 type Ⅱ hybrid surgery, 4 cases underwent reconstruction of the aortic sinutubular junction, while Bentall and David surgery was performed for 3 cases, respectively. A patient received coronary artery bypass grafting. Then all patients were sequentially treated with arch debranching and thoracic aortic endovascular repair. Postoperative complications included renal insufficiency (4/10), hemofiltration (1/10), hypoxemia (4/10), neurologic event (1/10) and type Ⅱ endoleak (1/10). Complete false lumen thrombosis occurred in 9/10 of the patients. All complications recovered successfully at discharge and the average hospital stay was (21±4) days (range: 16 to 28 days) in the first hospitalization. At stage 2, the second hybrid surgery was successfully performed in all patients. No paraplegia, hepatic or renal insufficiency, or endoleak occurred. However, branch graft embolism of the left renal artery was found in one patient 3 days after laparotomy, as well as of superior mesenteric artery in another. Superior mesenteric artery occlusion was successfully treated by endovascular recanalization. Complete false lumen thrombosis occurred in all patients. Although all patients had different degrees of intestinal dysfunction, they were gradually relieved at discharge, and the average hospital stay was (19±2)days (range:16 to 21 days) in the second hospitalization. During follow-up, CT angiography showed aortic remodeling in all patients.Conclusion:Staged and segmented two hybrid surgeries are safe and feasible for total repair of Debakey type Ⅰ aortic dissection and are associated with acceptable early and midterm outcomes.

Objective To investigate the equivalent conversion of head injury criterion(HIC)under anterior-posterior(AP)and lateral-medial(LM)craniocerebral impact for mild craniocerebral injury in rats using motor evoked potential(MEP)and β-amyloid precursor protein(β-APP)immunohistochemistry(IHC).Methods Sixty healthy adult male SD rats were randomly divided into 0 m control group,0.5 m-AP and 0.5 m-LM injury groups,and 1 m-AP and 1 m-LM injury groups(12 rats in each group).The control group did not undergo any impact injury experiment.After the impact injury experiment,the injury and control groups were subjected to excessive anesthesia to produce β-APP immunohistochemical stained slices,and the percentage of positive area and integral optical density(IOD)in the brainstem pyramidal tract area of the slices were determined.The MEP groups were divided in the same manner as the IHC groups and the MEP amplitudes of the MEP and control groups were measured after the impact injury experiment.Results With an increase in the degree of injury,the decrease in MEP amplitude,percentage of positive areas,and IOD in the injury groups significantly increased.When the degree of injury was low,the sensitivity of IHC was higher than that of MEP.When the degree of injury was the same,the HIC in the LM direction was lower than that in the AP direction.When the HIC was the same,the degree of injury in the LM direction was greater than that in the AP direction.Conclusions The joint evaluation of MEP and β-APP can provide experimental references for the study of HIC equivalent conversion in AP-LM craniocerebral impact injury.

Recent studies have revealed great functional and structural heterogeneity in the ribbon-type synapses at the basolateral pole of the isopotential inner hair cell (IHC). This feature is believed to be critical for audition over a wide dynamic range, but whether the spatial gradient of ribbon morphology is fine-tuned in each IHC and how the mitochondrial network is organized to meet local energy demands of synaptic transmission remain unclear. By means of three-dimensional electron microscopy and artificial intelligence-based algorithms, we demonstrated the cell-wide structural quantification of ribbons and mitochondria in mature mid-cochlear IHCs of mice. We found that adjacent IHCs in staggered pairs differ substantially in cell body shape and ribbon morphology gradient as well as mitochondrial organization. Moreover, our analysis argues for a location-specific arrangement of correlated ribbon and mitochondrial function at the basolateral IHC pole.
Animals ; Artificial Intelligence ; Cochlea/metabolism* ; Hair Cells, Auditory, Inner ; Mice ; Mitochondria ; Synapses/metabolism*

Objective:To summarize the technical points of laparoscopic pancreaticoduodenectomy (LPD) carried out in a single center.Methods:The clinical data of 102 patients who underwent laparoscopic pancreaticoduodenectomy in 2018 at the Department of Hepatobiliary Surgery of the Second Hospital of Hebei Medical University were retrospectively analyzed, and the general conditions, operation time, intraoperative blood loss, and surgical operation were analyzed. Post-operative complications, hospital stay and other indicators were studied.Results:Of the 102 patients who were included, there were 57 males and 45 females, aged 15.0 to 79.0 (59.9±11.8) years old, with a body mass index (23.6±3.6) kg/m 2. For the 102 patients who underwent LPD, 6 were total pancreatic resection. Three were combined with vascular resection in the form of portal vein-superior mesentery vein segmental resection. The operation time was (376.6±87.2) min, the intraoperative blood loss was 350 (100, 800) ml, and the postoperative hospital stay was (17.0±5.9) days. Postoperative complications occurred in 26 of the 102 patients (25.5%), and more than two complications occurred in 17 patients. B/C grade pancreatic fistula occurred in 9 patients (9.4%), abdominal bleeding in 8 patients (7.8%), gastrointestinal bleeding in 2 patients (2.0%), biliary fistula in 4 patients (3.9%), and gastric emptying disorder in 5 patients (4.9%), 8 patients had pulmonary infection (7.8%). Five patients (4.9%) died during the perioperative period. Conclusion:The main technical points of LPD included en bloc resection, pancreaticojejunostomy, and vascular reconstruction. The basis of LPD is en bloc resection. Combined resection and reconstruction of vascular segments is a sign of maturity of LPD technology and a prerequisite for further development as a routine procedure.

Objective To evaluate the use of endoscopic papillary balloon dilation in treatment of choledocholithiasis associated with peripapillary duodenal diverticulum.Methods From January 2017 to July 2018,a retrospective study was conducted on 124 patients with choledocholithiasis associated with peripapillary duodenal diverticula at the Department of Hepatobiliary Surgery,Second Hospital of Hebei Medical University.These patients were divided into the small endoscopic sphincterotomy combined with balloon dilation group (sEST+EPBD,n =60) and the simple papillary balloon dilation group (EPBD n =64).The operation time,one-time success rate of stone removal,complication and hospitalization stay were compared between the two groups of patients.Results The hospitalization expenses of the EPBD group was significantly less than the sEST+EPBD group (P＜0.05).The operation time of the EPBD group was significantly shorten than the sEST+EPBD group (P＜0.05).There were no significant differences in the one-time success rate of stone removal,complication rates and hospitalization stay between the two groups (P＞0.05).Conclusions Compared with sEST+EPBD,treatment of choledocholithiasis in patients with peripapillary duodenal diverticula using simple balloon dilation shortened the operation time,did not increase the complication rates and hospitalization stay.The procedure was safe and effective,and resulted in almost the same one-time success rate of stone removal.