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We evaluated the efficacy of subatmospheric pressure and hyperbaric oxygen (HBO) as adjuncts in the treatment of hypoxic full-thickness wounds in a rabbit model. We hypothesized that subatmospheric pressure and HBO independently are effective in improving wound healing in the ischemic wound model and that when they are used in combination there is an increased positive effect on wound healing. Using a standard ischemic wound model four full-thickness wounds were created on each ear of 41 male New Zealand white rabbits (N = 82 ears). On each rabbit one ear was dressed with the vacuum-assisted closure (VAC) device and connected to suction; the other was dressed identically without the suction and suction tubing. Twenty rabbits were treated with HBO daily for 10 days at 2.0 atmospheres absolute for 90 minutes plus descent and ascent times. Necropsy on all rabbits was performed on postoperative day 10. Four ischemic wound treatment groups were evaluated: Group 1 (N = 21) VAC dressing alone; Group 2 (N = 20) VAC dressing plus HBO; Group 3 (N = 21) VAC dressing to suction alone; and Group 4 (N = 20) VAC dressing to suction and HBO. Using light microscopy a veterinary pathologist blinded to treatment groups quantified peak granulation tissue, granulation tissue gap, and epithelialization tissue gap. Data were analyzed by analysis of variance with significance indicated by P < 0.05. Statistical significance was found in a comparison of VAC dressing to suction and VAC dressing alone for peak granulation tissue and granulation tissue gap both with and without use of HBO. VAC device use appears to increase the rate of healing in a rabbit ischemic wound model. HBO therapy did not significantly affect the rate of healing in this model.  相似文献   

3.
目的:观察封闭负压引流(vacuum assisted closure,VAC)早期处理对软组织爆炸伤创面的影响,为战伤早期处理提供新的思路。方法:选取健康3月龄长白猪8头,体重(50±5)kg,雌雄不拘,用同一型号的电雷管(型号:660929F48840-55,含DDNP0.3g,RDX0.7g)紧贴双侧臀部皮肤,造成16个损伤程度相当的爆炸创面,左右创面配对分成实验组和对照组。在室外暴露3h后进行创面的彻底清创,实验组用封闭负压引流处理,负压值维持在(-50±5)Kpa;对照组用无菌干纱布覆盖。分别于治疗前后进行大体观察、细菌学计数和革兰氏阳性(G+)细菌比例分析,以及采集病理学标本进行HE染色和Masson染色。结果:治疗3d后实验组创面细菌数为[(7.82±0.55)×104]CFU/g,对照组为[(1.07±0.14)×106]CFU/g,两组间有统计学差异(P〈0.01);实验组G+细菌比例显著提高,对照组则没有变化;实验组创面清洁,较对照组有更丰富的新生肉芽组织、血管和胶原,坏死组织明显减少。结论:VAC能抑制创面细菌增殖,提高G+细菌的比例,促进创面愈合,可用于软组织爆炸创面的早期治疗。  相似文献   

4.
Vacuum-assisted closure (VAC), a technique using subatmospheric pressure dressings, has been widely used for treatment of various chronic and complicated wounds. In addition to the advantages of an occlusive dressing therapy, the VAC therapy has proved effective in evacuating wound fluid, increasing tissue oxygen tension, decreasing bacterial contamination, and stimulating granulation tissue formation. This leads to more rapid re-epithelialization of wounds compared to conventional dressings. A two-phase VAC technique to provide enhanced coverage of an ischemic ulcer of the lower leg in a diabetic patient is presented. The refined VAC therapy scheme is described in detail and the results in a further 19 patients with complicated wounds of the lower leg and feet are reported. Received: 26 January 2000 / Accepted: 11 May 2000  相似文献   

5.
Chitosan, a natural polysaccharide derivate from chitin, offers a promising alternative biomaterial for use in wound dressings. In this work, the safety and efficacy of a next‐generation KA01 chitosan wound dressing in facilitating the healing of nonhealing chronic wounds was studied. This open multicenter comparative prospective randomized clinical study was conducted at three medical centers in China. A total of 90 patients (45 in test group and 45 in control group) with unhealed chronic wounds including pressure ulcers, vascular ulcers, diabetic foot ulcers, and wounds with minor infections, or at risk of infection, were treated with the next generation chitosan wound dressing as the test article or traditional vaseline gauze as a control. Baseline assessments were undertaken with the primary end point being wound area reduction. The secondary end points included pain reduction (using the NRS11 pain scale) at dressing change, wound exudate levels, wound depth and duration of the treatment. After 4 weeks treatment, the wound area reduction was significantly greater in the test group (65.97 ± 4.48%) than the control group (39.95 ± 4.48%). The average pain level in the test group was 1.12 ± 0.23 and 2.30 ± 0.23 in the control group. The wound depth was also lower in the test group 0.30 ± 0.48 cm than the control group 0.54 ± 0.86 cm. The level of exudate fell and the dressing could be removed integrally in both the test and control groups. The mean duration of the test group was 27.31 ± 5.37 days and control group 27.09 ± 6.44 days. No adverse events were reported in either group. In conclusion this open multicenter comparative prospective randomized clinical study has provided compelling evidence that the next generation chitosan wound dressing can enhance wound progression towards healing by facilitating wound reepithelialization and reducing the patients pain level. Furthermore the dressing was shown to be clinically safe and effective in the management of chronic wounds.  相似文献   

6.
Vacuum-assisted closure (VAC) has made a significant contribution to the treatment of acute and chronic wounds. Microdeformational forces from the VAC device accelerate granulation tissue formation when compared with moist saline dressing changes. We present 2 patients with multiple comorbid conditions and complex venous stasis ulcers that had persistent purulent drainage after conventional treatment modalities. Only after utilizing silver-impregnated VAC therapy (GranuFoam Silver), combining the antimicrobial benefits of silver with the advantages of VAC technology, were the wound beds adequately prepared for substantial split-thickness skin grafts. Based on these cases, the silver-impregnated VAC device may be a useful adjunct in wound bed preparation when standard therapies have failed to clear infected wounds. This may lead to improved healing rates and overall decreased wound burden in these complex patients.  相似文献   

7.
This study evaluated the efficacy of vacuum-assisted closure (VAC) for treatment of fasciotomy wounds for traumatic compartment syndrome. The authors reviewed the records of a consecutive series of 34 patients who had compartment syndrome of the leg requiring the standard two-incision release of all four compartments and received the application of VAC therapy until the time of definitive wound closure or coverage. A matched series of 34 consecutive antecedent patients with the same entry criteria, except for the use of the VAC, were also studied and served as a control group. The main parameter of interest was the time to "definitive closure" (delayed primary closure with sutures or skin graft coverage) of the wounds. Of the 68 wounds in 34 patients managed with VAC, the average time to definitive closure for both the lateral and the medial wounds was 6.7 days. For the 70 wounds in the 34 control patients, the average time to definitive closure was 16.1 days. This difference in time to wound closure between the VAC group and the non-VAC group was statistically significant (p < .05). Subatmospheric treatment for compartment syndrome of the leg after fasciotomy theoretically helps to speed the resolution of the swelling and tissue edema that are often components of this clinical entity. Experimental work has shown vacuum-assisted wound management to be effective in hastening the resolution of wound edema, enhancing local blood flow, promoting granulation tissue, and thwarting bacterial colonization. These factors may account for its utility in the management of fasciotomy wounds in the setting of compartment syndrome of the leg.  相似文献   

8.
Chronic wounds have become one of the major issues in medicine today, the treatments for which include dressing changes, negative pressure wound therapy, hyperbaric oxygen, light irradiation, surgery and so forth. Nevertheless, the application of diode lasers in chronic wounds has rarely been reported. This retrospective cohort study aimed to evaluate the therapeutic effect of diode laser (810 nm) irradiation on chronic wounds. Eighty-nine patients were enrolled in the study. The control group (41 patients) received traditional dressing change therapy, while the diode laser treatment group (48 patients) were patients received additional treatment with diode laser (810 nm) irradiation for 10 min at each dressing change. Wound healing time was compared between two groups, while the pain relief index was creatively introduced to evaluate the effect of relieving wound pain, which was calculated by the difference in pain scores between the first and last dressing changes divided by the number of treatment days. The wound healing time of the diode laser treatment group was 22.71 ± 8.99 days, which was significantly shorter than that of the control group (37.44 ± 23.42 days). The pain relief index of the diode laser treatment group was 0.081 ± 0.055, which was significantly increased compared with that of the control group (0.057 ± 0.033). Our findings suggest that diode laser irradiation has the potential to promote healing in chronic wounds and relieve wound pain.  相似文献   

9.
BACKGROUND: An effective regimen to treat patients suffering from acute necrotizing fasciitis requires surgical removal of devitalized tissues, systemic administration of broad antimicrobials and ameliorating underlying systemic disease processes. The task of managing wounds consequential to surgical debridement, on the other hand, can be difficult. We had the opportunity of using a vacuum-assisted wound closure (VAC) technique in 12 patients with non-healing wounds in either the upper or the lower limb because of acute necrotizing fasciitis. The usefulness of the device was assessed by comparing with the conventional approach of wet dressing technique of wound care. METHODS: A vacuum-assisted wound closing device was used in 12 patients with open wounds. For comparison, the conventional technique of wound care, i.e., the wet dressing technique, was used in 12 patients. The change in wound size, amount of drainage and the mortality rate were recorded in each group. RESULTS: The extent of wound size reduction noted in the VAC group was 47%, while in the conventional wet-to-dry dressing (CWD) group, it was 41%. The amount of drainage reduction noted was 49% in the VAC group and 39% in the CWD group. The cost of supplies for the CWD group was about one-seventh that of the VAC group. On the other hand, time required for the care was decreased by 3.7-fold with the use of the VAC technique. CONCLUSION: The VAC technique of wound closure was found to be effective in managing non-healing limb wounds consequential to surgical treatment for patients suffering from acute necrotizing fasciitis. Although the cost of the VAC device was high, morbidity was much lower when compared to the CWD technique.  相似文献   

10.
Effect of subatmospheric pressure on the acute healing wound   总被引:11,自引:0,他引:11  
PURPOSE: Vacuum-assisted closure (VAC), originally developed as an adjunct to wound care, has gained popularity in managing complex, chronic wounds. This study was designed to compare VAC with traditional saline-wet-to-dry (WD) dressings on acute wound healing in a pig model. METHODS: Nine animals were divided into groups of 3. Three rows of 2, 4-cm diameter circular defects were excised on each animal. Vacuum-assisted closure therapy was applied to 2 adjacent wound beds, WD dressings were applied to 2 adjacent wound beds, and ventilated transparent dressing covered the 2 remaining wounds as controls. Random members from each group had their wounds harvested on postoperative days (POD) number 4, 7, and 9, respectively. The specimens were histopathologically evaluated and graded with regard to immature granulation tissue, mature granulation tissue, necropurulent surface crust, proliferating cell nuclear antigen (PCNA), and collagen deposition. RESULTS: The WD-treated wounds had less necropurulent material on the surface compared with the VAC and control groups (p < 0.05). Day 9 specimens demonstrated increased immature collagen in the VAC and WD groups compared with control. No other statistically significant variations existed between the treatment groups. CONCLUSIONS: Under the conditions of this study, the histopathologic observations do not support more rapid wound healing for the acutely injured VAC-treated wound compared with the WD-treated wound in young healthy pigs.  相似文献   

11.
Negative pressure wound therapy (NPWT) is the treatment of choice for chronic wounds; yet, it is associated with considerable workload. Prompted by its nonadhesive and wound‐healing properties, this study investigated the effect of an additional polymeric membrane interface dressing (PMD; PolyMem WIC) in NPWT. From October 2011 to April 2013, 60 consecutive patients with chronic leg wounds or surgical site infections after revascularization of lower extremities were randomly allocated to either treatment with conventional NPWT (control arm) or NPWT with an additional PMD (intervention arm). The primary outcome was wound healing achieved within 30 days, the secondary endpoints included: number of days between dressing changes, wound‐related pain, cost efficiency, and occurrence of adverse events ( ClinTrials.gov Identifier: NCT02399722). Forty‐seven patients completed follow‐up. No difference in wound healing was observed (p > 0.05) between both study arms. The additional PMD allowed significantly longer wearing times (days) between dressing changes (intervention: 8.8 ± 0.5, control: 4.8 ± 0.2; p < 0.001). Pain was slightly higher in patients randomized to NPWT alone (VAS score: 4.8 ± 2.9) compared to NPWT + PMD (VAS score: 3.0 ± 2.9, p = 0.063). No wound infections were observed. Costs were reduced by 34% per patient in the intervention arm. These results suggest that the combination of NPWT and an additional interface PMD is a safe and economic method for the treatment of chronic wounds, which requires significantly fewer dressing changes for a comparable wound healing.  相似文献   

12.
Complex breast wounds are a constant problem for surgeons. Wound vacuum-assisted closure therapy (VAC) has been shown to be effective for a variety of complex wounds. Our goal was to evaluate our experience with the (VAC) device in the treatment of open breast wounds. We retrospectively identified 18 patients with complex breast wounds treated with the VAC. We analyzed the data regarding the nature and management of these wounds using the VAC device. Fifteen of 18 patients were treated effectively using the VAC. Two patients required muscle flap coverage. One patient had the VAC dressing discontinued secondary to a denial by an insurance company for VAC in the home setting. VAC therapy is an effective treatment for complex wounds. Specifically, our experience shows it to be effective in the treatment of complex breast wounds. Utilization of VAC therapy should be considered for the management of these challenging wounds.  相似文献   

13.
IntroductionRegular dressing of traumatic wounds is of paramount importance for healing. Phenytoin, an anticonvulsant, is thought to promote wound healing through multiple mechanisms, including fibroblast proliferation, granulation tissue formation, antibacterial activity, and pain alleviation.AimTo assess the effect of topical phenytoin on traumatic wound healing in terms of granulation tissue formation, pain alleviation, and time taken for wound healing.MethodologyFifty patients with traumatic wounds were divided into equal and comparable groups. After cleaning the wound, phenytoin dressing was done in the study group and saline dressing in the control group. Thereafter, regular dressings of the wounds were done, and healing was assessed on day 14 and day 21.ResultsOn day 14, the wound surface area, percentage of granulation tissue, VAS score amongst cases was 39.4 ± 29.75 cm2, 82.12 ± 9.71%, 4.52 ± 1.08, and that of controls was and 51.28 ± 25.33 cm2, 62.72 ± 9.01%, 6.52 ± 1.22, respectively. On day 21, the wound surface area, percentage of granulation tissue, VAS score amongst cases were 29.4 ± 29.88 cm2, 92 ± 4.46%, 2.8 ± 0.94, and that of controls were 38.92 ± 23.24 cm2, 78.56 ± 8.19%, and 4.88 ± 1.17, respectively. The time taken for wound healing was 21.76 ± 5.28 days amongst cases and 31.64 ± 8.31 days amongst controls. Staphylococcus aureus was the commonest organism isolated in both the groups. On day 14,18(72%), wounds in the study group showed negative culture, whereas, in the control group, it was negative in 12 (48%) patients. The rate of granulation tissue formation was higher in cases when compared to controls amongst smokers and diabetics. The difference in all these parameters between the groups was statistically significant (P-value <0.05).Discussion and conclusionWe observed a considerable increase in granulation tissue formation, pain alleviation, and reduction in time taken for wound healing. Topical phenytoin is a safe, effective, readily available, and frugal agent that can accelerate wound healing through its multimodal action, thus reducing patient morbidity and economic burden.MeSH termsPhenytoin, Wound healing, Topical, Ulcer, Anticonvulsant, Granulation Tissue, Saline dressing.  相似文献   

14.
Split-thickness skin grafts (STSG) are widely used in wound reconstruction. However, donor site wounds are created as a result. Traditionally, moist wound healing and transparent film dressings have been used to promote donor site wound healing. This retrospective study evaluated the use of oxidised regenerated cellulose (ORC)/collagen/silver-ORC dressing (ORC/C/Ag-ORC) with an absorptive silicone adhesive border dressing and transparent film dressing (treatment) compared with petrolatum-based gauze dressing (control) over donor site wounds. Patients underwent an STSG procedure between January and December 2020. Donor sites received treatment (n = 10) or control (n = 10) dressings. Dressing changes occurred as necessary. Time to epithelialisation, narcotic pain medication requirements, and the number of office/hospital visits were examined. Twenty patients were managed (9 males, 11 females, average age: 49.7 ± 13.9 y). Patient comorbidities included hypertension, diabetes, and hyperlipidemia. Wound types included traumatic and cancer excision. Time to epithelialisation was significantly reduced in the treatment group (11.1 ± 1.4 d vs 18 ± 2.4 d, P < 0.0001). The number of office visits for dressing changes was significantly lower in the treatment group (0.1 ± 0.3 vs 2 ± 0.7, P < 0.0001). No patients in the treatment group required a hospital visit, compared with 3 patients in the control group. One patient in the treatment group required narcotic pain medication, compared with 5 in the control group. In this patient population, the use of ORC/C/Ag-ORC, an absorptive silicone adhesive border dressing, and transparent film dressing resulted in a shorter time to epithelialisation and less analgesic requirement compared with petrolatum-based gauze dressing use.  相似文献   

15.
目的:观察中药灌洗负压治疗糖足创面的临床疗效。方法:将60例糖尿病足住院患者随机分为观察组30例和对照组30例。观察组给予常规基础及中药灌洗负压技术治疗,对照组给予常规基础及盐水灌洗负压治疗,疗程为21 d,观察两组患者全血白细胞计数、C反应蛋白、创面面积变化、创面缩小率、换药次数及创面局部各症状积分的变化情况。结果:近期疗效结果表明观察组总有效率96.67%,明显高于对照组的90%(P0.05)。两组患者创面局部各症状积分治疗前后对比,差异有统计学意义(P0.05)。治疗后,观察组WBC、CRP、创面面积及换药次数等观察指标分别为(5.86±1.37)×109/L、(4.59±1.10) mg/L、(5.81±2.01) cm~2、(5.33±0.92)次,均明显低于对照组,治疗后创面缩小率(25.06±5.91)%明显高于对照组。结论:临床上应用中药灌洗负压技术治疗糖尿病足创面,可以明显缩短创面愈合时间,提高愈合率,减少换药次数,减轻患者换药痛苦和医护人员工作量。在治疗上具有自己的特色和优势,值得临床进一步推广应用。  相似文献   

16.
目的:探讨负压封闭引流技术在介入治疗后皮肤坏死软组织缺损创面的治疗作用。方法:对22例介入治疗后有皮肤软组织缺损坏死的患者采用负压封闭引流装置治疗,并在每次更换负压装置时进行清创。经过15~40天,平均28天的治疗后,部分患者在创面上行二期游离皮片或皮瓣转移修复术。结果:22例患者经过治疗后创面清洁、面积缩小、肉芽生长迅速,16例患者在负压引流治疗后创面直接上皮化愈合,6例患者经过游离皮片移植或皮瓣转移修复后愈合。结论:自制简易负压吸引结合间断清创能够减少创面污染、促进肉芽组织生长、加速创面愈合,还可为二期手术创造条件,缩短术前准备时间,且减轻患者痛苦及医务人员工作量。  相似文献   

17.
Acute traumas of the lower limbs cause complex functional damage for the association of skin loss with exposed tendons, bones, and/or vessels, requiring a multidisciplinary approach. Once bone fixation and vascular repair have been carried out, the surgical treatment for skin damage is usually based on early coverage with conventional or microsurgical flaps. Negative pressure therapy can play a primary role in the management of the elderly or intensive care patients, where wounds are secondary to life-threatening problems. A total of 35 patients with 37 acute traumatic wounds of the lower limbs were treated with vacuum-assisted closure (VAC) therapy for an average of 22 days (range 3-46 days). The sponge was applied the day after bone fixation, vascular repair, and surgical debridement of nonviable tissues, so as to obtain a better control of bleeding. After VAC treatment, all patients quickly developed healthy granulation tissue and a significant reduction in both extent and depth of wounds. Split-thickness skin grafts were used to cover granulation tissue in most of the cases (66% -- 24 cases), and then local flaps (13% -- five cases) or direct sutures (8% -- three cases). The wounds healed spontaneously without surgical management in four patients. One patient died during the treatment period for concomitant diseases. No relevant complications directly related to VAC therapy were observed other than one case of severe pain in an amputated stump. The average follow-up duration was 265 days (range 33-874 days). No further tegumentary reconstruction was required. VAC therapy may represent a valid alternative to immediate reconstruction in selected cases of acute complex traumas of the lower limb and allows for a stable functional result, using a minimally invasive approach.  相似文献   

18.
目的:观察封闭负压技术治疗外科手术后伤口裂开的临床效果及总结应用经验。方法:从2007年5月至2009年12月,采用封闭负压技术治疗各类外科术后伤口裂开患者17例,其中男10例,女7例,平均年龄41岁。创面面积为0.5cm×3.2cm~5.5cm×18.6cm,创面形成时间为8~94天,期间采用常规湿敷或中药换药治疗伤口未愈。给予-120mmHg~-150mmHg负压持续吸引,治疗时间为6~37天。结果:10例经封闭负压治疗后创面直接愈合,其余7例创面清洁,肉芽组织新鲜,伤口缩小,4例清创缝合,2例行局部皮瓣转移,1例行皮片移植修复,伤口均一期愈合。术后随访2~12个月,所有伤口愈合良好,无再次裂开。结论:封闭负压技术简便、无创,能有效促进伤口清洁,加快肉芽组织生长,缩短创面愈合时间,适合治疗各种外科术后伤口裂开,有较高的临床推广应用价值。  相似文献   

19.

Purpose

We present our current clinical approach for the treatment of postoperatively infected wounds of the abdominal wall healing by secondary intention that may help in the design of a randomized controlled trial to develop a standardized wound treatment pathway.

Methods

Patients with postoperatively infected abdominal wounds treated with either Advanced Wound Care (AWC) dressings or vacuum-assisted closure (VAC) therapy were enrolled in the study. Follow-up was carried out prospectively for wound healing and incidence of incisional hernia at the earliest 3 years after surgery.

Results

Sixty-two patients were included and wounds were initially treated antiseptically for 5.19?±?2.91 days. Prior to VAC therapy, AWC dressings were applied for 8.75?±?2.93 days to reduce reinfection. Greater wound size (>12?×?6?×?6cm) and extensive secretion (>200 ml/day) argued for the VAC system. Overall incidence of incisional hernia was 20.4 %, with 18.4 % occurring in AWC-treated patients and 27.3 % in VAC-treated patients. Based on these results, a wound treatment pathway was established in our department.

Conclusion

The established wound treatment pathway has helped to increase both workflow efficacy and outcome in the treatment of abdominal wounds. Wound size, amount of secretion, and status of infection were the parameters we used for the determination of appropriate treatment. The observational data gathered during the initiation of our pathway lay the basis for future randomized controlled trials that will determine the most appropriate treatment options in the setting of a standardized wound treatment pathway.  相似文献   

20.
目的探讨应用负压封闭引流技术(Vacuum Sealing Drainage,VSD)治疗手部感染性创面的临床效果。方法回顾性分析2014年12月-2019年3月收治的皮肤缺损伴感染患者40例。随机分为VSD治疗组(A组)20例,常规换药治疗组(B组)20例。A组给予手术清创,负压引流材料覆盖创面,并给予庆大霉素持续冲洗。B组给予手术清创后,每日换药。两组肉芽组织新鲜后给予植皮治疗。回顾性分析两组平均住院时间、创面愈合时间、创面评分、疼痛程度评分、抗菌药物使用时间、换药次数。结果A组住院时间、创面愈合时间、创面评分、疼痛程度评分、抗菌药物使用时间、换药次数均少于B组,A组疼痛评分低于B组。两组差异有统计学意义(P<0.01)。结论应用VSD治疗手部感染性创面可促进肉芽组织生长,加速创面愈合,减少患者住院时间及抗菌药物使用,减轻患者的痛苦,临床效果良好,值得推广。  相似文献   

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