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find Author "ZHAO Yan" 12 results
  • The application and progress of pulmonary ultrasound in congestive heart failure

    In recent years, with the development of ultrasound technology, pulmonary ultrasound is more and more used in the evaluation of patients with heart failure. B-lines are defined as reverberation artifacts starting from the pleural line and extending to the bottom of the screen without disappearing, and moving synchronously with pleural sliding, which are proportional to extravascular lung water in congestive heart failure (CHF). B-lines have the characteristics of no attenuation and synchronous movement with pleural sliding. Pulmonary ultrasound mainly record the numbers and widths of B-lines in the areas when assessing the severity of CHF, which have the characteristics of effectivity, non-invasiveness, instantaneousness, and good repeatability. Currently, there are 4-, 8-, 12-, and 28-subdivision methods for the evaluation of CHF in the pulmonary ultrasound subdivision method. The more subdivisions are, the longer the operation time will be, and the sensitivity and specificity will be different. How to choose a subdivision method is still controversial in clinical practice. Lung ultrasound could be used alone or combined with brain natriuretic peptide, echocardiography, chest X-ray, chest CT scan, etc. in the early diagnosis, assessment of disease severity, evaluation of efficacy, and assessment of prognosis of CHF, with different advantages and disadvantages. This article reviews the application and progress of pulmonary ultrasound in CHF.

    Release date:2019-04-22 04:14 Export PDF Favorites Scan
  • Health care quality improvement for cardiovascular surgery in China: the perspectives and initiatives

    The cardiovascular surgery in China has reached a stable platform, with notable progress been achieved in the past several decades. However, significant divergency regarding the healthcare quality was also observed, which requiring effective intervention to start the transition from the focus on "quantity" to the pursuit of "quality". Quality improvement program, including the establishment of a national cardiovascular surgery database, the conformation of a standard key quality evaluation indicator system, and the conduction of quality intervention and improvement initiatives, are promising to consolidate and expand the advantages of cardiac surgery and lead to better patient outcomes.

    Release date:2019-10-12 01:36 Export PDF Favorites Scan
  • Healthcare quality improvement for cardiovascular surgery in China: basic concepts and current status

    Facing the increasing cardiovascular disease burden and prevailing population risk factors, the cardiovascular surgery in China was also encountering challenges including imbalances in discipline development, significant divergencies in healthcare quality, lacking of clinical guidelines and domestic critical evidence. The concept of quality control and improvement has been practiced and tested in many disease specialties. Quality improvement programs are urgently needed in China to promote the universal cardiovascular surgery healthcare quality.

    Release date:2019-10-12 01:36 Export PDF Favorites Scan
  • Perioperative management of new-onset atrial fibrillation after cardiac surgery

    New-onset atrial fibrillation (NOAF) is the most common complication after cardiac surgery. Postoperative atrial fibrillation is traditionally believed to a benign arrhythmia secondary to inflammation or surgical stimulation. However, a number of studies showed that patients with NOAF had a substantially increased adverse cardiovascular events. Therefore, effective treatment is of great significance. This study aims to review recent research of the perioperative management of NOAF.

    Release date:2020-06-29 08:13 Export PDF Favorites Scan
  • Treatment of COVID-19 during esophageal cancer surgery: A case report

    There is still a lack of experience in the perioperative strategy for esophageal cancer patients in China during the epidemic of COVID-19. In December 2022, a 59-year-old male patient with esophageal cancer was admitted to our department. He received 2 cycles of neoadjuvant therapy before surgery, and developed COVID-19 perioperatively. After treatment, the infection symptoms of the patient were improved, and the postoperative recovery was satisfactory.

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  • Research on real-time detection system of catheter delivering force in vascular interventional robots

    In existing vascular interventional surgical robots, it is difficult to accurately detect the delivery force of the catheter/guidewire at the slave side. Aiming to solve this problem, a real-time force detection system was designed for vascular interventional surgical (VIS) robots based on catheter push force. Firstly, the transfer process of catheter operating forces in the slave end of the interventional robot was analyzed and modeled, and the design principle of the catheter operating force detection system was obtained. Secondly, based on the principle of stress and strain, a torque sensor was designed and integrated into the internal transmission shaft of the slave end of the interventional robot, and a data acquisition and processing system was established. Thirdly, an ATI high-precision torque sensor was used to build the experimental platform, and the designed sensor was tested and calibrated. Finally, sensor test experiments under ideal static/dynamic conditions and simulated catheter delivery tests based on actual human computed tomography (CT) data and vascular model were carried out. The results showed that the average relative detection error of the designed sensor system was 1.26% under ideal static conditions and 1.38% under ideal dynamic stability conditions. The system can detect on-line catheter operation force at high precision, which is of great significance towards improving patient safety in interventional robotic surgery.

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  • FUNCTION RECONSTRUCTION OF ANTERIOR AND MIDDLE COLUMN IN THORACOLUMBAR SPINAL TUBERCULOSIS BY ONE-STAGE ANTERIOR RADICAL DEBRIDEMENT

    Objective To summarize the effect of one-stage anterior debridement of infection in function reconstruction of anterior and middle column for the treatment of thoracolumbar spinal tuberculosis. Methods From January 2001 to January 2007, 65 patients with thoracolumbar spinal tuberculosis were treated with one-stage anterior debridement, decompression, autogenous bone grafts and internal fixation. There were 43 males and 22 females with an average age of 40.2 years (range, 19-64 years), including 18 cases of thoracic tuberculosis (T4-10), 44 cases of thoracolumbar tuberculosis (T11-L2) and 3 cases of lumbar tuberculosis (L3-5). The disease course was 3 months to 10 years (median 10 months). One segment was involved in 7 cases, two segments in 54 cases and three segments in 4 cases. In 14 cases with spinalcord injury, there were 5 cases of grade C and 9 cases of grade D according to Frankel classification. The kyphotic Cobb angle was 20-65° (41° on average). Results The operative time was 120-210 minutes (170 minutes on average), and the blood loss was 300-1 500 mL (600 mL on average). Fifty-eight patients were followed up for 1-6 years (23 months on average). Abscess occurred in 2 cases at 40 days and 3 months, and healed after symptomatic management. The other incisions achieved heal ing by first intention. The X-ray films showed bony fusion 4-12 months (6 months on average) after operation. No tuberculosis recurred. At 12 months after operation, pain disappeared, and there were 7 cases of grade D and 7 cases of grade E according to Frankel classification. The kyphotic Cobb angle was 0-33° (24° on average), showing statistically significant difference (P lt; 0.05) when compared with preoperation. Conclusion Early reconstruction of load-bearing function and stabil ity of anterior and middle column in the treatment of spinal tuberculosis is great significant. The appl ication of one-stage anterior surgery with debridement, decompression, autogenous bone grafts and internal fixation in the operative treatment of thoracolumbar tuberculosis is safe and effective after a rigorous anti-tuberculosis treatment.

    Release date:2016-08-31 05:47 Export PDF Favorites Scan
  • PEDICLE SCREW FIXATION AND ALLOGRAFT BONE IN POSTERIOR SPINAL FUSION FOR TREATMENT OF THORACOLUMBAR VERTEBRAL FRACTURES/

    Objective To investigate the efficacy of the pedicle screw fixation and allograft bone in posterior spinal fusion for the treatment of thoracolumbar vertebral fractures. Methods From September 2006 to March 2008, 105 cases of thoracolumbar vertebral fractures were treated with allograft bone in posterior spinal fusion after the pedicle screw fixation,including 75 males and 30 males aged 15-65 years (mean 37 years). The mixture which consisted of spinous process and vertebral plate sclerotin and homogeneity variant bone was used as bone graft to implant into articular process and processus transversus space or vertebral plate space. The time from injury to surgery varied from 8 hours to 21 days, with an average of 3 days. There were 52 cases of fall ing injuries from height, 35 cases of traffic accident injuries, 11 cases of bruise injuries and 7 cases of tumbl ing injuries. Before operation, the primary cl inical symptoms of patients included local pain combined with l imitation of activity, 30 cases compl icated by various degrees of spinal cord and nerve root functional disturbance. According to Mcaffee classification, there were 7 cases of flexion depressed fractures, 86 cases of blow-out fractures, 9 cases of Chance fractures and 3 cases of dislocation-fracture. According to Frankel grade, there were 11 cases of grade A, 2 cases of grade B, 7 cases of grade C, 10 cases of grade D and 75 cases of grade E. The X-ray examination of all patients denoted that the bodies of injuryed vertebra were compressed and wedge-shaped, and the CT scan showed that 98 cases had spinal stenosis. After 2 weeeks and 3, 6, 12 months, the X-ray films were taken to evaluate bone graft fusion. The Cobb angle was measured. The recovery of nerve function was analyzed. Results The operation time was 55-180 minutes (mean 90 minutes) and the blood loss was 100-900 mL (mean 200 mL). All patients achieved heal ing by first intention with no compl ication. After operation, 93 cases were followed up for 6-15 months with an average of 11 months. Except for 11 patients who were at grade A before operation, one to two grade recover was observed in other patients. The average Cobb angle of injury segment was improved from preoperative 32.1° to postoperative 5.2°. The height of anterior border of injuried vertebral body was recovered from the preoperative average compressed remaining height 61.5% to postoperative 96.8%. The vestigial degree of canal is spinal is anteroposterior diameter was recovered from preoperative 65.7% to postoperative 89.9%. Imageology examination showed that all the patient achieved bone union within 6 months. The fusion rate of bone graft in spinal fusion was 100%. No loosening and breaking of nails occurred. Conclusion Pedicle fixators can restore and fix the thoracolumbar fractures, and the combination of autograft and allograft bone transplantation is a safe, rel iable and effective method.

    Release date:2016-09-01 09:06 Export PDF Favorites Scan
  • Safety and Efficacy of Laparoscopic Resection for Gastric Stromal Tumors: A Systematic Review

    Objective To assess the safety and efficacy of laparoscopic resection for gastric stromal tumors. Methods The Literature published before November of 2010 was searched in PubMed, EMbase, Wiley Online Library, MEDLINE, CNKI, VIP, and CBM to identify the randomized controlled trials (RCTs) or quasi-RCTs about laparoscopic versus open resection for gastric stromal tumors. The literature was screened according to the inclusive and exclusive criteria by two reviewers independently, and the methodology quality was evaluated after abstracting the data, then the RevMan 5.0 software was used for Meta-analyses. Results Four quasi-RCTs and eight CCTs involving 496 patients were included. The results of Meta-analyses showed that, compared with the open resection surgery, the laparoscopic resection surgery significantly reduced the hospitalization duration (MD= –2.81, 95%CI –4.51 to –1.11), and the incidence of recurrence and metastasis (OR=0.36, 95%CI 0.13 to 1.01). No significant differences were found between the two groups in operation time, amount of bleeding, postoperative first flatus and oral intake, and total complication rate (Pgt;0.05). Conclusion Laparoscopic resection surgery is safe to treat the patients with gastric stromal tumors, which may reduce the hospitalization duration and the incidence of recurrence and metastasis. Due to the poor quality and small sample size of included trials, more well-designed RCTs should be performed.

    Release date:2016-09-07 11:06 Export PDF Favorites Scan
  • The clinical significance of plasma interleukin-17 in patients with acute respiratory distress syndrome

    ObjectiveTo investigate the clinical signification of plasma interleukin-17 (IL-17) 1evel in patients with acute respiratory distress syndrome (ARDS).MethodsForty-five adult ARDS patients and 22 healthy controls were enrolled in this study. The plasma cytokine levels of IL-17, IL-6 and IL-10 were measured by enzyme linked immunosorbent assay. Meanwhile, the baseline data of demographic and clinical tests including oxygenation index, procalcitonin and brain natriuretic peprtide were collected, the acute physiological and chronic health Ⅱ (APACHEⅡ) score and sequential organ failure assessment (SOFA) score were recorded. The main outcome was defined as hospital mortality within 28-day follow-up.ResultsThe plasma concentration of IL-17, IL-6 were higher in the ARDS patients (P<0.05) compared with the controls and the mean levels of IL-17, IL-6 and the APACHEⅡ score and the SOFA score in the non-survivors was higher than those in the survivors (P<0.05). In particular, there was a significant correlation between the plasma levels of IL-17 and IL-6 (P<0.05). Logistic regression and COX multivariate survival analysis suggested that age and SOFA score may be prognostic factors for ARDS.ConclusionsThe plasma concentration of IL-17 is significantly increased in ARDS patients, and its expression is linearly related to the proinflammatory factor IL-6. Both are important inflammatory markers in the acute phase of ARDS and may be important disease severity and prognostic indicators in addition to age and SOFA score.

    Release date:2021-06-30 03:41 Export PDF Favorites Scan
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