首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 31 毫秒
1.

Purpose

In adults, shock index (SI; heart rate/systolic blood pressure) > 0.9 predicts injury severity and trauma outcomes. However, age-adjusted shock index (SIPA) out-performs SI in blunt trauma patients 4–16 years old. We sought to confirm these findings and expand this tool to include penetrating trauma and children aged 1–4 years.

Methods

We developed cutoff values for patients 1–3 years old using age-based vital signs and queried the 2014 Pediatric Trauma Quality Improvement Program (TQIP) database for patients aged 1–16 years sustaining blunt or penetrating trauma. Outcomes measured included injury severity, transfusion within 24 h, intensive care unit (ICU) and hospital length of stay (LOS), and mortality. SI and SIPA were compared using Student's t-test and chi-square tests.

Results

We identified 22,344 blunt and 613 penetrating trauma patients. SI was elevated in 41.3% and 40.0% of these groups, respectively, whereas SIPA was elevated in 15.6% and 19.4% of patients. SIPA was a significantly better predictor of transfusion needs, injury severity, ICU admission, ventilator use, and mortality for both blunt and penetrating trauma.

Conclusion

SIPA identifies severe injury and predicts transfusion needs and mortality more effectively than SI for both blunt and penetrating pediatric trauma. Further investigation should evaluate its use as a triage tool.

Type of study

Prognosis Study.

Level of evidence

II.  相似文献   

2.

Introduction

Rib fractures after blunt trauma contribute substantially to morbidity and mortality in the elderly.

Methods

Retrospective review of 255 patients ≥65 years old at a level 2 trauma center over 6 years, who sustained blunt trauma resulting in rib fractures. Outcomes measured include mortality, hospital length of stay(LOS), intensive care unit(ICU) admission, ICU LOS, need for MV, and MV days.

Results

There were 24 deaths (9.4%), of which 7 were early (<24?h). 130 patients (51%) were admitted to ICU, and 49 (19.2%) required MV. Mean ICU and MV days were 5.9 and 6.3, respectively. ICU admission was predicted by a base deficit <-2.0, ISS>15, bilateral rib fractures, pneumothorax or hemothorax on chest x-ray (All p?<?0.001), as well as hypotension, GCS<15, and 1st rib fractures (All p?<?0.05). Mortality was predicted by a base deficit?<?-5.0, GCS score of 3(Both p?<?0.001), as well as hypotension, ISS≥25, RTS <7.0, bilateral pneumothoraces, 1st rib fractures, and >5 rib fractures (All p?<?0.05).

Conclusion

Rib fractures in elderly blunt trauma patients are associated with significant mortality and morbidity, but outcomes can be predicted to improve care.  相似文献   

3.

Background

Base Deficit (BD) and lactate have been used as indicators of shock and resuscitation. This study was done to determine the association of BD and lactate and to determine if one is superior.

Methods

A retrospective review from 3/2014–12/2016 was performed. Data included demographics, systolic BP, ISS, BD, lactate, blood transfusion, and outcomes. BD and lactate were modeled continuously and categorically and compared.

Results

1191 patients were included. BD and lactate correlated strongly (r?=?-0.76 p?<?0.001). Higher lactate and more negative BD were associated with transfusion and mortality. On multivariate regression, only BD was associated with transfusion (OR?=?0.8, p?<?0.001). As a categorical variable, worsening BD was associated with decreased BP, higher ISS, increased transfusions and worse outcomes.

Conclusions

BD and lactate are strongly related. BD was superior to lactate in assessing the need for transfusion. The BD categories discriminate high risk trauma patients better than lactate.  相似文献   

4.

Background

The specific contribution of dementia towards mortality in trauma patients is not well defined. The purpose of the study was to evaluate dementia as a predictor of mortality in trauma patients when compared to case-matched controls.

Methods

A 5-year retrospective review was conducted of adult trauma patients with a diagnosis of dementia at an American College of Surgeons-verified level I trauma center. Patients with dementia were matched with non-dementia patients and compared on mortality, ICU length of stay, and hospital length of stay.

Results

A total of 195 patients with dementia were matched to non-dementia controls. Comorbidities and complications (11.8% vs 12.4%) were comparable between both groups. Dementia patients spent fewer days on the ventilator (1 vs 4.5, P = 0.031). The length of ICU stay (2 days), hospital length of stay (3 days), and mortality (5.1%) were the same for both groups (P > 0.05).

Conclusions

Dementia does not appear to increase the risk of mortality in trauma patients. Further studies should examine post-discharge outcomes in dementia patients.  相似文献   

5.

Purpose

Early diagnosis of traumatic brain injury (TBI) is important for improving survival and neurologic outcome in trauma victims. The purpose of this study was to assess whether Glasgow Coma Scale (GCS) of 12 or less can predict the presence of TBI and the severity of associated injuries in blunt trauma patients.

Methods

A retrospective cohort study including 303,435 blunt trauma patients who were transferred from the scene to hospital from 1998 to 2013. The data was obtained from the records of the National Trauma Registry maintained by Israel's National Center for Trauma and Emergency Medicine Research, in the Gertner Institute for Epidemiology and Health Policy Research. All blunt trauma patients with GCS 12 or less were included in this study. Data collected in the registry include age, gender, mechanism of injury, GCS, initial blood pressure, presence of TBI and incidence of associated injuries. Patients younger than 14 years old and trauma victims with GCS 13–15 were excluded from the study. Statistical analysis was performed by using Statistical Analysis Software Version 9.2. Statistical tests performed included Chi-square tests. A p-value less than 0.05 was considered statistically significant.

Results

There were 303,435 blunt trauma patients, 8731 (2.9%) of them with GCS of 3–12 that including 6351 (72%) patients with GCS of 3–8 and 2380 (28%) patient with GCS of 9–12. In these 8731 patients with GCS of 3–12, 5372 (61.5%) patients had TBI. There were total 1404 unstable patients in all the blunt trauma patients with GCS of 3–12, 1256 (89%) patients with GCS 3–8, 148 (11%) patients with GCS 9–12. In the 5095 stable blunt trauma patients with GCS 3–8, 32.4% of them had no TBI. The rate in the 2232 stable blunt trauma patients with GCS 9–12 was 50.1%. In the unstable patients with GCS 3–8, 60.5% of them had TBI, and in subgroup of patients with GCS 9–12, only 37.2% suffered from TBI.

Conclusion

The utility of a GCS 12 and less is limited in prediction of brain injury in multiple trauma patients. Significant proportion of trauma victims with low GCS had no TBI and their impaired neurological status is related to severe extra-cranial injuries. The findings of this study showed that using of GCS in initial triage and decision making processes in blunt trauma patients needs to be re-evaluated.  相似文献   

6.

Introduction

Managing trauma in the elderly is challenging and requires a multidisciplinary team approach. The aim of this study is to characterize and compare outcomes in patients 90 years and older in the last two decades.

Methods

Retrospective review of trauma patients 90 years and older admitted from 1996 to 2015. The patients were divided into two groups: Early Decade (ED) and Late Decade (LD).

Results

A total of 1697 patients were recorded, 551 (ED) and 1146 (LD). The mean age was 92.92?±?8(90–108)[ED] and 92.9?±?2.7(90–105)[LD] years. The most common mechanism and type of injury was falls and extremity trauma. Hospital length of stay (LOS) was shorter in the LD. There was no significant difference in in-hospital mortality or ICU LOS.

Conclusion

Trauma admission has increased in the last decade. However, in-hospital mortality remains low. It is important for multidisciplinary teams to allocate resources to treat this elderly population.  相似文献   

7.

Background

The Oklahoma Trauma Registry (OTR) collects data from all state-licensed acute care hospitals. This study investigates trends and outcomes of trauma in Oklahoma using OTR.

Methods

107,549 patients (2005–2014) with major severity and one of the following criteria were included: length of hospital stay ≥48?h, dead on arrival or death in the hospital, hospital transfer, ICU admission, or surgery on the head, chest, abdomen, or vascular system. Patient characteristics, mechanisms of injury, and outcomes of trauma were analyzed.

Results

Hospital admissions due to falls increased with an annual percent change of 4.0% (95%CI: 3.1%–4.9%) while hospital admissions due to motor vehicle crashes decreased. The number of overall deaths per year remained stable except for the fall-related deaths, which increased proportionate to the increase in the incidence of fall. Fall-related mortality was 4.2% and intracranial bleeding was present in 60% in these patients.

Conclusion

Falls are significantly increasing as a mechanism of trauma admissions and trauma-related deaths in Oklahoma. Analysis of state-based trauma registries can identify trends in etiologies of injuries and may indicate a reference point to prioritize preventive plans.  相似文献   

8.
9.

Background

Post colonoscopy blunt splenic injury (PCBSI) is a rarely reported and poorly recognized event. We analyzed cases of PCBSI managed at our hospital and compared them to existing literature.

Methods

We identified 5 patients admitted with PCBSI through chart review.

Results

There were 5 cases of PCBSI identified from April 2016–July 2017. Four of the patients were older than 65 years, three had prior surgeries, and all were women. CT scans showed splenic laceration in 4 cases, hemoperitoneum in 4 cases, and left pleural effusion in 2 cases. Three patients were treated with coil embolization, 1 had open splenectomy, and 1 was observed.

Conclusions

Although blunt splenic injury is an infrequently reported complication of colonoscopy, it can result in high-grade injury requiring transfusion and invasive treatment due to significant hemorrhage. As previously reported, we demonstrate a high rate of PCBSI in women over 55 with a history of prior abdominal surgery. These data suggest that a high index of suspicion for splenic injury post-colonoscopy should be present in this population.  相似文献   

10.

Study Design

Prospective cohort study.

Introduction

Identification of risk factors for CRPS development in patients with surgically treated traumatic injuries attending hand therapy allows to watch at-risk patients more closely for early diagnosis and to take precautionary measures as required.

Purpose of the Study

The aim of this study was to evaluate the risk factors for the development of complex regional pain syndrome (CRPS) after surgical treatment of traumatic hand injuries.

Methods

In this prospective cohort, 291 patients with traumatic hand injuries were evaluated 3 days after surgery and monitored for 3 months for the development of CRPS. The factors assessed for the development of CRPS were age, sex, manual work, postoperative pain within 3 days measured on a Pain Numerical Rating Scale (0-10), and injury type (crush injury, blunt trauma, and cut laceration injury).

Results

CRPS was diagnosed in 68 patients (26.2 %) with a duration of 40.10 ± 17.01 days between the surgery and CRPS diagnosis. The mean postoperative pain score was greater in patients with CRPS than in those without CRPS (P < .001). Patients with pain scores ≥ 5 had a high risk of developing CRPS compared with patients with pain scores <5 (odds ratio: 3.61, confidence interval = 1.94-6.70). Patients with crush injuries were more likely to develop CRPS (odds ratio: 4.74, confidence interval = 2.29-9.80).

Conclusions

The patients with a pain score of ≥5 in the first 3 days after surgery and the patients with crush injury were at high risk for CRPS development after surgical treatment of traumatic hand injuries.

Level of Evidence

II b.  相似文献   

11.

Background

We hypothesized that team communication with unmatched grammatical form and communicative intent (mixed mode communication) would correlate with worse trauma teamwork.

Methods

Interdisciplinary trauma simulations were conducted. Team performance was rated using the TEAM tool. Team communication was coded for grammatical form and communicative intent. The rate of mixed mode communication (MMC) was calculated. MMC rates were compared to overall TEAM scores. Statements with advisement intent (attempts to guide behavior) and edification intent (objective information) were specifically examined. The rates of MMC with advisement intent (aMMC) and edification intent (eMMC) were also compared to TEAM scores.

Results

TEAM scores did not correlate with MMC or eMMC. However, aMMC rates negatively correlated with total TEAM scores (r = ?0.556, p = 0.025) and with the TEAM task management component scores (r = ?0.513, p = 0.042).

Conclusions

Trauma teams with lower rates of mixed mode communication with advisement intent had better non-technical skills as measured by TEAM.  相似文献   

12.

Background

The role of vasopressors in trauma-related haemorrhagic shock (HS) remains a matter of debate. They are part of the most recent European recommendations on the management of HS and are regularly used in France. We assessed the effect of early administration of noradrenaline in 24 h mortality of trauma patients in HS, using a propensity-score analysis.

Methods

The study included patients from a multicentre prospective regional trauma registry. HS was defined as transfusion of ≥4 erythrocyte-concentrate units during the first 6 h. Patients with a Glasgow coma scale=3 and pre-hospital traumatic cardiac arrest were excluded. The main outcome measure was in-hospital mortality. The explicative and adjustment variables for the outcome and treatment allocation were predetermined by a Delphi method. The in-hospital mortality of patients with and without early administration of noradrenaline was compared in a propensity-score model, including all predetermined variables.

Results

Of 7141 patients in the registry in the study period, 6353 were screened and 518 patients in HS (201 with early noradrenaline use and 317 without) were included and analysed. After propensity-score matching, 100 patients remained in each group, and the hazard-ratio mortality was 0.95 (95% confidence interval: 0.45–2.01; P=0.69).

Conclusions

The results of the present study suggest that noradrenaline use in the early phase of traumatic HS does not seem to affect mortality adversely. This observation supports a rationale for equipoise in favour of a prospective trial of the use of vasopressors in HS after trauma.  相似文献   

13.

Objective

The incidence of morbidity and mortality for iliac vascular injuries in the literature are likely overestimated owing to associated injuries. Data for isolated iliac vascular injuries are very limited. No large studies have reported the incidence of morbidity for repair versus ligation of isolated iliac vein injuries.

Methods

Patients in the National Trauma Data Bank (NTDB; 2007-2012) with at least one iliac vascular injury were analyzed. Isolated iliac vessels were defined as cases with Abbreviated Injury Scale severity score of greater than 3 for extraabdominal injuries and an Organ Injury Scale grade of greater than 3 for intraabdominal injuries.

Results

Overall, 6262 iliac vascular injuries (2809 penetrating, 3453 blunt) were identified in 271,076 patients with abdominal trauma (2.3%). There were 3379 patients (1841 penetrating, 1538 blunt) with isolated iliac vascular injuries (1.2%) and 557 patients (514 penetrating, 43 blunt) with combined iliac artery and vein injuries (0.2%). The 30-day mortality rate was 16.5% for isolated iliac vein injury, 19.3% for isolated iliac artery injury, and 48.7% for combined isolated iliac artery and vein injury. The 30-day mortality rate was 23.4% for isolated iliac vascular injuries compared with 39.0% for nonisolated iliac vascular injuries (P < .001). Patients with isolated iliac vein injuries had morbidity rates of deep venous thrombosis (repair, 14.6%; ligation, 14.1%; P = .875), pulmonary embolism (repair, 1.8%; ligation, 0.5%; P = .38), fasciotomy (repair, 9.3%; ligation, 14.6%; P = .094), amputation (repair, 1.8%; ligation, 2.6%; P = .738), acute kidney injury (repair, 5.8%; ligation, 4.7%; P = .627). Multivariate logistic regression demonstrated that ligation of isolated iliac vein injuries had an odds ratio of 2.2 for mortality compared with repair (95% confidence interval, 1.08-4.66).

Conclusions

Isolated iliac vascular injuries are associated with a high incidence of mortality, especially for combined venous and arterial injury, but mortality is significantly lower than in patients with nonisolated iliac vascular injuries. In patients with isolated iliac vein injuries, mortality was higher in patients who underwent ligation compared with repair; however, the rates of deep venous thrombosis, pulmonary embolism, fasciotomy, amputation, and acute kidney injury were not different between the treatment groups. These data lend credence to the assessment that repair of iliac vein injuries is preferable to ligation whenever feasible.  相似文献   

14.

Purpose

Ocular trauma is one of the most common causes of acquired blindness in children. It measures about 8%-14% of total childhood injuries. This study aims to determine the epidemiological profile of ocular trauma in the pediatric age group attending a tertiary hospital in northern India.

Methods

A retrospective study was conducted in our hospital between June 2014 to July 2015 and all the children aged 0-16 years presenting with ocular trauma in eye outpatient department and emergency were enrolled in the study. Various epidemiological parameters like age, sex distribution, duration of presentation, mode of injury, type of injury and final visual outcome were analyzed.

Results

Of total 357 patients, 271 (76%) were below the age of 12 years; 41.1% of children with ocular trauma belonged to age group 2-6 years. The male to female ratio was 2.9:1. Out of total patients, 242 (67.8%) presented with closed globe injury. Among the closed globe injury, the history of fall was present in about 35% of children, followed by trauma while playing with bat/ball (15.7%) and finger nail trauma (13.2%). Among open globe injury, trauma with needle, knife, glass and pen were common causes. Home was the most common place of injury (47.8%), followed by streets (17.9%) and playground (14.9%).

Conclusion

Children are vulnerable to ocular trauma and need more supervision. Sharp objects like needles, knives, household chemicals like acids should be out of reach of children.  相似文献   

15.

Background

Training in ultrasound is variable among residents and practicing traumatologists. Focused Assessment with Sonography in Trauma (FAST) may be underused in non-urbanized areas, possibly due to lack of training.

Methods

State trauma registry data from January 2014–June 2016 were reviewed for FAST results. Trauma practitioners were surveyed querying training, confidence, and obstacles to performing FAST.

Results

12,855 records revealed highest FAST use at the urban Level II center (39%, p < 0.0001). Despite similar injury patterns, non-urban/Level III centers' frequency of FAST was only 1–28%. 39 practitioners were surveyed, those with training (54%) were more likely to use FAST (p < 0.05). 61% of practitioners outside the Level II center cited lack of confidence in their ability to perform FAST as the primary reason for omitting the exam.

Conclusions

FAST is relatively underused in non-urbanized areas of the state. Lack of confidence in ability to perform FAST was cited as the primary barrier.  相似文献   

16.

Background

The aim of this prospective cohort study is to evaluate the outcome of octogenarian patients undergoing uncemented total hip arthroplasty (THA) with a control group of similarly aged patients undergoing hybrid THA with a minimum 5-year follow-up.

Methods

Clinical outcomes including intraoperative and postoperative complications, blood transfusion, revision rate, and mortality were recorded. Radiological analysis of preoperative and postoperative radiographs assessed bone quality, implant fixation, and any subsequent loosening.

Results

One hundred forty-three patients (mean age 86.2 years) were enrolled in the study. Seventy-six patients underwent uncemented THA and 67 underwent hybrid THA. The uncemented cohort had a significantly lower intraoperative complication rate (P = .017) and also a lower transfusion rate (P = .002). Mean hospital stay (P = .27) was comparable between the 2 groups. Two patients underwent revision surgery in each cohort.

Conclusion

Our study demonstrates that uncemented THA is safe for the octogenarian patient and we recommend that age should not be a barrier to the choice of implant. However, intraoperative assessment of bone quality should guide surgeons to the optimum decision regarding uncemented and hybrid implants.

Level of evidence

3.  相似文献   

17.
Purpose: Investigation of injury patterns epidemiology among car occupants may help to develop different therapeutic approach according to the seat position. The aim of the study was to evaluate and compare differences in the incidence of serious injuries, between occupants in different locations in private cars. Methods: A retrospective study including trauma patients who were involved in motor vehicle accidents and admitted alive to 20 hospitals (6 level Ⅰ trauma centers and 14 level Ⅱ trauma centers). We examined the incidence of injures with abbreviated injury score 3 and more, and compared their occurrence between seat locations. Results: The study included 28,653 trauma patients, drivers account for 60.8% (17,417). Front passenger mortality was 0.47% higher than in drivers. Rear seat passengers were at greater risk (10.26%) for traumatic brain injuries than front seat passengers (7.48%) and drivers (7.01%). Drivers are less likely to suffer from serious abdominal injuries (3.84%) compared to the passengers (front passengers - 5.91%, rear passengers - 5.46%). Conclusion: Out of victims who arrived alive to the hospital, highest mortality was found in front seat passengers. The rate of serious chest injuries was higher as well. Rear seat passengers are at greater risk for serious traumatic brain injuries. All passengers have a greater incidence of abdominal injuries. These findings need to be addressed in order to develop “customized” therapeutic policy in trauma victims.  相似文献   

18.

Background

Some studies suggested that after abdominal trauma, postoperative infections are associated with bacterial translocation, whereas others have not replicated these findings. We have assessed the bacterial translocation and postoperative infections in patients undergoing splenectomy after abdominal trauma, using a very homogeneous study population.

Methods

We consecutively studied, in a prospective observational clinical study, 125 patients who required urgent surgical treatment (splenectomy) following blunt abdominal trauma. For bacterial translocation identification, tissue samples were taken from liver, spleen and mesenteric lymph nodes (MLNs). Postoperative infectious complications in these patients were registered, confirmed by a positive culture obtained from the septic focus. Associations between clinical variables, bacterial translocation presence, and postoperative infection development were established.

Results

Bacterial translocation was detected in 47 (37.6%) patients. Postoperative infections were present in 29 (23.2%) patients. A significant statistical difference was found between postoperative infections in patients with bacterial translocation evidence (22 of 47 patients: 46.8%) in comparison with patients without bacterial translocation (7 of 78 patients: 8.9%) (P < 0.05). After multivariate adjustment analysis: a) the bleeding ≥ 1500 mL was significantly associated with the risk of bacterial translocation and, b) bacterial translocation was significantly associated with the risk of postoperative infections. Bacterial strains isolated from infection sites were the same as those cultured in MLNs in 48.3% of the cases (n = 14 of 29).

Conclusions

There is higher risk of bacterial translocation in patients who required urgent surgical treatment (splenectomy) following blunt abdominal trauma and it is associated with a significant higher number of postoperative infections.  相似文献   

19.

Introduction

Cycling has seen a large increase in popularity worldwide over the last number of years. This has been linked to an increase in the number of road traffic accidents involving cyclists. Participation in cycling as part of competitive sport and endurance events has seen particular growth.

Aim

To examine patients referred with spinal trauma related to cycling and to assess whether the growing popularity of cycling and particularly competitive cycling is linked to an increase in spinal trauma.

Methods

A retrospective analysis was carried out of a prospectively maintained database of referrals to a national referral centre for spinal trauma over a 4-year period (2010–2013). Data were further analysed for years 2012–2013, as there were incomplete data for years 2010–2011.

Results

Spinal injuries involving cyclists increased by 200% from 2010 to 2013. In comparison those involving cars only increased by 29% and motorcycles reduced by 68%. From 2012 to 2013 there were 24 cyclist trauma referrals. The most common level injured was cervical spine (71%). Five patients (20.8%) had neurological deficit with 12.5% complete paralysis ASIA A disability score. The spinal fixation rate was 29.1%, 16.6% were managed with a HALO device. In total, 25% of patients were injured whilst training on a racer style bicycle, including all of the patients with complete spinal cord injury.

Conclusion

There has been a significant increase in spinal trauma due to cycling accidents over this four year period. Competitive cycling has been a factor in the most severely injured patients. Increased public awareness campaigns for those participating in cycling for sport may be warranted.  相似文献   

20.

Purpose

Patients with pre-existing cervical spinal canal stenosis (CSCS) may have minimal or no symptoms. However, performing preventive decompression is controversial as the incidence of CSCS leading to severe cord injury is unknown. Hence, this study aims to revisit the threshold for surgery in “silent” CSCS by reviewing the neurologic outcomes of patients with undiagnosed CSCS who sustained a cervical spinal cord injury (CSCI).

Methods

Two groups of subjects were recruited for analysis. Firstly, patients with trauma-induced CSCI without fracture or dislocation were included. Pre-existing CSCS was diagnosed by MRI measurements. The second group consisted of asymptomatic subjects recruited from the general population who also had MRIs performed. Canal sizes were compared between this control group and the patient group. Within the patient group, neurological assessments and outcomes by Frankel classification were performed in patients treated surgically or conservatively.

Results

32 patients with CSCS were recruited. The mean spinal canal sagittal diameter (disc-level) of all CSCS cases was 5.3 ± 1.4 mm (1.3–8.2). In comparison, the diameter was 10.5 ± 1.7 mm (6.6–14.6) in the 47 asymptomatic individuals recruited from the general population. Decompression was performed in 17 patients and conservative treatment in 15. Mean follow-up was 19.3 ± 17.0 months (6–84). At the final follow-up, 3 patients (9.3%) returned to their pre-injury Frankel grade, whereas 26 patients (83.3%) lost one or more neurological grade. Three patients (9.3%) died.

Conclusions

Majority of patients with “silent” CSCS who sustained cervical cord injuries did not return to their pre-injury neurological status. All of these subjects have pre-existing canal stenosis hence the risk of cord injury. Given the poor neurological outcome of CSCS, a lower threshold for surgery could be indicated to avoid these disastrous injuries. However, before making any conclusive recommendation we must first identify the prevalence of “silent” CSCS in the general population and the risk of developing spinal cord injury with more prospective population-based studies.  相似文献   

设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号