Objective To investigate the reasons of misdiagnosis and missing diagnosis in blunt abdominal trauma (BAT), and to put forward effective preventive measures. Methods Literature on BAT diagnosis in recent years was reviewed. Results Misdiagnosis and missing diagnosis, which can take place in every segment of BAT patients, were still quite common nowadays. Conclusion Detailed case history collecting, faithful medical examination and making good use of assistant examinations can efficiently decrease the misdiagnosis and missing diagnosis rates of BAT patients.
Objective To evaluate the role of CT in diagnosis of the gastrointestinal tract rupture after blunt abdominal trauma. MethodsTwenty preoperative CT scans and clinical data were obtained in 20 patients who subsequently had bowel ruptures verified surgically. CT findings were analyzed retrospectively in these patients. Retrospective interpretation was made by consensus of at least two radiologists. ResultsTwenty cases of CT scan showed intraperitoneal fluid (18 cases), pneumoperitoneum (18 cases), extravasations of gastrointestinal tract contents (2 cases), bowel wall findings (14 cases) and mesenteric injury (15 cases). Conclusion CT is fast, sensitive and noninvasive in diagnosis of the gastrointestinal tract rupture after blunt abdominal trauma.
Objective To investigate the changes and roles of myocardial adenosine triphosphate enzyme(ATPase) in the mechanism of cardiac dysfunction after blunt chest trauma（BCT）. Methods Thirtysix rabbits were divided into 6 groups with random number table, control group, 2 h group, 4 h group, 8 h group, 12 h group and 24 h group, 6 in each group. The models of BCT were established with BIMⅡ biological impact machine, catheterization technique was used through the right jugular artery into the left ventricle measure its pressure. The hemodynamics and the activities of ATPase in myocardial cell plasm, homogenate and mitochondria were measured at preinjury(control group), 2 h, 4 h, 8 h, 12 h and 24 h postinjury. Results Left ventricular endsystolic pressure(LVESP), the maximal ascending rate of left intraventricular pressure(+dp/dtmax), isovolemec pressure(IP) and the maximal physiological velocity(Vpm) decreased significantly at 2 h group after BCT(Plt;0.05）, and recovered to preinjury level in 4 h, 8 h and 12 h group during 4-12 h after BCT; isovolumic relaxation phase left ventricular pressure descending time constant (T). Left ventricular enddiastolic pressure(LVEDP) and the maximal descending rate of left intraventricular pressure(-dp/dtmax) were significantly higher （Plt;0.05, 0.01）. The activity of ATPase in homogenate, mitochondria and cell plasm decreased significantly at 2 h group and 4 h group after BCT（Plt;0.05, 001, respectively）, and 8 h group and 12 h group recovered after BCT. There was negative correlations between [CM(159mm]LVEDP and -dp/dtmax and the decrease of the activity of Na+-K+-ATPase in homogenate（r=-0.674, -0.691, Plt;0.05）, the Ca2+-ATPase in homogenate（r=-0.613,-0.642, Plt;0.05）, the Na+-K+-ATPase in mitochondria（r=-0.622,-0.616, Plt;0.05）,the Ca2+-ATPase in myocardial cell plasm（r=-0.672,-0.658, Plt;0.05）, the Na+-K+-ATPase in myocardial cell plasm（r=-0.627,-0.632,Plt;0.05）,and the Mg2+-ATPase in myocardial cell plasm（r=-0.677,-0.661, Plt;0.05）. Conclusion The left ventricular function is impaired obviously after BCT, especially in diastolic phase. The decrease of the activity of ATPase in myocardial cells may be one of the reasons of cardiac dysfunction after BCT.
Objective To investigate the changed rules of the cardiac functions in rabbits and to provide theoretical gists for clinical diagnosis and treatment after blunt chest trauma(BCT). Methods Using the models of moderate to severe BCT with BIM-Ⅱ Bio-impactor in 20 rabbits to examinate the cardiac functions with cardiac catheterization, the single photonemission computed tomography(SPECT) and the Doppler echocardiography at preinjury and 1h, 2h, 4h, 6h, 8h, 12h and 24h after BCT. Results Central venous pressure( CVP）, left ventricular enddiastolic pressure (LVEDP) and the decreasing time constant of left intraventricular pressure (T) at 24h after trauma were higher obviously than those before trauma (Plt;0.05,0.01). The -dp/dtmax at 24h after trauma was lower markedly than that before trauma (Plt;0.05 ). The ejection fraction(EF),1/3 EF, 1/3 ejection rate（1/3ER） and the ratio of 1/3 filling rate (1/3FR) to 1/3ER of the right ventricle at 24h after impacted were lower markedly than those before impacted (Plt;0.05). The peak filling rate, 1/3 filling fraction, 1/3 filling rate, the ratio of peak filling rate to peak ejection rate and the ratio of 1/3FR to 1/3ER of the left ventricular at 24h after impacted were lower obviously than those before impacted (Plt;0.05, 0.01). Conclusion The cardiac functions are changed significantly after BCT. The expressions of the right ventricular dysfunctions mainly are systolic dysfunction while the left ventricular dysfunctions are mainly diastolic dysfunction after BCT. All the cardiac catheterization, SPECT and the Doppler echocardiography are beneficial to the diagnosis of cardiac dysfunction after BCT. The SPECT is more exactitude and the Doppler echocardiography is more cheaper.
Objective To analyze the outcome of patients with Blunt Abdominal Injury (BAI) in the Deyang People’s Hospital after the Wenchuan Earthquake, in order to provide evidence for future improvement in emergency response after earthquakes and in the treatment of BAI patients. Methods Data on the BAI patients within 1 week after the earthquake were collected from the Information Department of the Hospital. Microsoft EXCEL was used for data input. Results A total of 23 BAI inpatients were treated, of whom 15 were from Mianzhu City and sent to hospital within 12 hours of the earthquake. This was 1.9% of the total inpatients. The BAI inpatients suffered severe and complex injuries, and 5 of them died (mortality rate: 22%). Linenectomy was conducted for patients with spleen injuries and two inpatients developed incision infection due to lack of antibiotics during the perioperative period. Conclusions It is important to establish an emergency response mechanism for medical rescue for patients with the viscera injury, including BAI, after an earthquake. This would help to guarantee rational allocation of the rescue workers, triage of the wounded, optimization of operation, as well as a reduction in mortality from BAI.
ObjectiveTo explore the effectiveness of thoracic endovascular aortic repair (TEVAR) for blunt thoracic aortic injury (BTAI) with hostile stent-graft proximal landing zone. MethodsA retrospective analysis was made on the clinical data of 13 patients with BTAI with hostile stent-graft proximal landing zone treated by TEVAR between December 2007 and December 2014. There were 10 males and 3 females with the mean age of 44 years (range, 24-64 years). The imaging examination indicated Stanford type B aortic dissection in 7 cases, pseudoaneurysm in 3 cases, aneurysm in 1 case, and penetrating ulcer in 2 cases. According to the partition method of thoracic aortic lesion by Mitchell, 8 cases underwent stent-graft with left subclavian artery (LSA) coverage, 3 underwent chimney stents for LSA, and 2 for left common carotid artery (LCCA). In 2 cases receiving chimney TEVAR involving LCCA, one underwent steel coils at the proximal segment of LSA to avoid type II endoleak and the other underwent in situ fenestration for endovascular reconstruction of LSA. ResultsAll TEVAR procedures were successfully performed. The mean operation time was 1.8 hours (range, 1-3 hours); the mean intraoperative blood loss was 120 mL (range, 30-200 mL); and the mean hospitalization time was 15 days (range, 7-37 days). No perioperative death and paraplegia occurred. The patients were followed up 3-30 months (mean, 18 months). Type I endoleak occurred in 1 case during operation and spontaneously healed within 6 months. Hematoma at brachial puncture site with median nerve compression symptoms occurred in 1 case at 3 weeks after operation; ultrasound examination showed brachial artery pseudoaneurysm and thrombosis, and satisfactory recovery was obtained after pseudoaneurysmectomy. No obvious chest pain, shortness of breath, left upper limbs weakness, numbness, and dizziness symptoms were observed. Imaging examination revealed that stentgraft and branched stent remained in stable condition. Meanwhile the blood flow was unobstructed. No lesions expanded and ruptured. No new death, bacterial infection, or other serious complications occurred. ConclusionAccording to Mitchell method, individualized plan may be the key to a promising result. More patients and further follow-up need to be included, studied, and observed.
ObjectiveTo summarize the mid-term follow-up results and postoperative aortic remodeling of treating blunt aortic injuries (BAI) with thoracic endovascular aortic repair (TEVAR).MethodsA retrospective study was conducted on BAI patients treated with TEVAR, who were admitted into the Department of Vascular Surgery in Zhongshan Hospital, Affiliated to Fudan University between September 2003 and December 2015. There were 15 males and 9 females at an average age of 45.6±14.0 years. The mechanism of BAI was mainly auto car crash. Totally 25 entry tears were detected and most of them were located at the aortic isthmus.ResultsTwenty-four BAI patients survived and eventually went through TEVAR. One patient died of pulmonary embolism 1 week post-TEVAR. Rate of technical success, clinical success and perioperative mortality was 100.0%, 95.8%, and 4.2%, respectively. Nineteen patients were followed up with a mean time of 35.1(13-87) months. All of them survived this period. Based on the follow-up imaging of CTA, 18 of them revealed no endoleak or stent migration, and 1 patient of transection still had perfusion of distal false lumen at the abdominal aorta. None of the aortic segments measured in this study showed expansion of ≥5 mm during follow-up. The aorta remodeled well in 94.7% of them.ConclusionTEVAR for treating BAI appears feasible with high rates of technical and clinical success rates. The mid-term follow-up results seems satisfying, but the long-term results are yet to be assessed with further follow-up.