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PubMed1997

Management of postblepharoplasty lower eyelid retraction with hard palate grafts and lateral tarsal strip.

Lower eyelid malposition is the most common long-term complication following transcutaneous lower eyelid blepharoplasty. The malposition may include rounding of the lateral canthal angle, lower eyelid retraction with inferior scleral show, or frank ectropion. The result is cosmetically unacceptable and may be associated with tearing, irritation, and other exposure keratitis symptoms. Multiple factors, including lower eyelid laxity, shortage of skin, and scarring of the middle lamella, may be responsible for this malposition. A systematic examination of the lower eyelid, as presented, helps to assess the degree to which each of these factors is responsible for the malposition. Patients with the most severe degree of lower eyelid malposition generally have middle lamella scarring. If this abnormality is not addressed, lower eyelid procedures aimed at correcting the malposition are doomed to failure. In the presence of significant middle lamella scarring, a spacer is required to provide vertical height and stiffness to support the lower eyelid following release of the cicatrix. A systematic approach aimed at addressing the underlying abnormalities was developed. In patients with significant middle lamella scarring, hard palate mucosa grafts were used as spacers in 29 eyelids (17 patients). A lateral canthotomy and transconjunctival incision allow access to the scarring in the lower eyelid retractors and septum. After careful release of all cicatrix, a hard palate mucosa graft is inserted between the lower border of the tarsal plate and the recessed conjunctiva, lower eyelid retractors, and septum. Horizontal lower eyelid laxity, when present, is corrected by performing a lateral tarsal strip. Most patients do not have a true deficiency of the anterior lamella (skin and orbicularis oculi muscle). When a moderate amount of anterior lamella deficiency is present with significant scarring of the middle lamella, the technique we describe allows correction of the lower eyelid malposition without a skin graft. After a follow-up interval of 6 to 30 months (mean 14 months), excellent results were obtained in all eyelids. Complications included corneal abrasions in two eyes before routine use of bandage cornea contact lenses at the end of surgery and a secondary bleed from the roof of the mouth in one patient. Palate mucosa closely resembles tarsus and provides excellent vertical support to the eyelid. It is stiff enough to maintain eyelid contour without causing a cosmetically unacceptable bump. Tissue can be obtained with ease. The technique, as described, addresses the underlying causes of lower eyelid malposition and gives excellent functional and cosmetic results.

Adult↗

PubMed1997

Near fatal envenomation from the funnel-web spider in an infant.

Children with significant envenomation require early first aid, resuscitation, and the administration of antivenom at the earliest possible time to survive. The case of a nine-month-old infant with life-threatening massive envenomation from the Sydney funnel-web spider (Atrax robustus) is presented. The infant was administered life-saving first aid (pressure immobilization bandage) and resuscitation measures prior to and during the administration of funnel-web-specific antivenom. The infant was discharged two days after the initial envenomation, without sequelae from the envenomation or antivenom. The survival of this infant is attributed to the immediate use of first aid, together with aggressive supportive measures and the administration of repeated doses of specific antivenom.

Animals↗

PubMedDate not supplied

Effects of ankle-to-knee external pressures on skin blood perfusion under and distal to compression.

OBJECTIVE: To compare the effects of select leg compression pressures on blood perfusion in the skin overlying bone and the skin distal to the leg compression. DESIGN: Blood perfusion of skin overlying the tibia and the foot dorsum was simultaneously measured in 12 healthy subjects using laser Doppler. Each subject's calf was compressed from ankle to knee with an air cast that applied external pressure, ranging from 0 to 40 mm Hg in 10 mm Hg increments. All measurements were initiated after a 20-minute rest interval and were recorded with each subject in a supine position. SETTING: University research center. RESULTS: The main findings show that compression causes a significant decrease in skin blood perfusion (SBF) at both sites, with greater reductions in SBF occurring with increased compression pressure. Greater SBF reductions occurred at the foot than at the directly compressed tibia site. Thus, at the highest pressure (40 mm Hg), the foot SBF reduction (61.6% +/- 13.7%) was greater than at the directly compressed tibial site (33.3% +/- 0.3%), both of which were significantly less than baseline (P <.01). CONCLUSIONS: The present findings and considerable related evidence indicate that lower extremity external compression, within the range of commonly used therapeutic levels, reduces SBF by an amount that depends on the magnitude of the compression pressures. The quantitative difference between the effect of compression on SBF within the compression area, and distal to it, is likely a result of the way that the compression affects arteriolar and venous resistance to blood flow at the 2 sites. From a clinical perspective, it would seem prudent to anticipate that sub-bandage and distal SBF would be negatively affected by compression, with greater effects likely in tissue distal to compression.

Adult↗

PubMedDate not supplied

Prospective trial of complete decongestive therapy for upper extremity lymphedema after breast cancer therapy.

PURPOSE: Lymphedema is a well-described complication of therapy for breast cancer. Patients who present with lymphedema may experience pain and body image issues and are at increased risk for developing cellulitis. Complete decongestive therapy (CDT) is a four-component therapy for lymphedema. Data regarding CDT as an intervention in the immediate after the diagnosis period and prolonged follow-up are limited; we prospectively analyzed results of CDT in this cohort of patients. MATERIALS AND METHODS: Twenty patients were enrolled in CDT immediately after their diagnosis of lymphedema. The Functional Assessment of Cancer Therapy quality of life (QoL) measure and a visual analogue scale for pain were completed before, on the 10th day of, and on the last day of treatment. Each patient underwent a daily 60- to 90-minute treatment session, 5 days per week for 2-4 weeks. Treatment consisted of skin and nail care, manual lymphatic drainage, a multilayer compression bandage, and therapeutic exercise. Edema of the affected limb was reassessed weekly. On reaching a measurement plateau, the patient was discharged from active treatment and began a maintenance phase. The patient was reassessed for girth, volume, and body weight at 3 months. These measurements plus the QoL and pain measures were also reassessed at 6 months and 1 year after treatment. RESULTS: Patients completed 2-4 weeks of treatment (median, 2 weeks). Those classed as severe decreased from 7 to 1. Median girth reduced 1.5 cm and median volume reduced 138 mL. Decreasing girth correlated significantly with decreasing visual analogue scale scores for pain, but not with increasing QoL. Increasing grade correlated significantly with girth reduction and volume reduction. Compliance with the treatment regimen at home decreased with time on the program. During follow-up, girth and volume reverted slightly but stabilized at about 1 cm and 100 mL below baseline, respectively. Although the increase in QoL was not significant, it was noted that during the entire treatment and follow-up period, QoL consistently increased, ending about 5% above baseline, and pain scores gradually decreased, ending with 54% (and median) of patients at 0 pain. CONCLUSIONS: CDT is effective in treating lymphedema. Success in girth reduction contributes to less pain. Grade is a useful indicator of severity; class is not. Increased number of treatment sessions provides marked improvements in girth, volume, and weight but result in poorer compliance. Longer latency more successfully reduces girth, volume, and pain and increases QoL. QoL and pain are improved by treatment and continue to improve after treatment has ended.

Adult↗

PubMed2006

Therapeutic use of silicone hydrogel contact lenses in children.

PURPOSE: To evaluate the safety and efficacy of silicone hydrogel extended-wear contact lenses when used for therapeutic purposes for children. METHODS: This was a prospective open-ended nonrandomized study. Twenty-nine consecutive pediatric patients at the Eye Clinic of Kaunas University of Medicine in Lithuania requiring therapeutic contact lens wear for anterior segment disorders were enrolled. In all cases, Focus NIGHT & DAY (CIBA Vision, Duluth, GA) contact lenses were used. Success or failure of specific treatment and the presence of ocular or lens-related complications were noted in each case. RESULTS: Twenty-nine eyes were fitted with Focus NIGHT & DAY contact lenses. The average age at the time of presentation was 9 years (range, 2 months to 17 years). The conditions treated were burn (seven eyes), corneal erosion (three eyes), neurotrophic keratitis (four eyes), descemetocele (one eye), corneal ulcer (one eye), keratouveitis (one eye), exposure keratitis (one eye), vernal keratoconjunctivitis (one eye), herpetic keratitis (one eye), corneal perforation (two eyes), and corneal injury (seven eyes). The mean duration of continuous contact lens wear was 17.8 days (range, 1-131 days). Dry eye was the cause of contact lens loss in one eye. Total bandage contact lens wear was effective in 27 (93%) eyes. Complications related to contact lens wear were limited to one case (increased signs of inflammation in the case of herpetic keratitis) requiring cessation of therapeutic lens wear after 24 hours. CONCLUSIONS: Focus NIGHT & DAY silicone hydrogel contact lenses were found to be safe and efficacious for continuous-wear therapeutic use for children.

Adolescent↗

PubMed2003

Comparative analysis of hemostatic agents in a swine model of lethal groin injury.

BACKGROUND: Techniques for better hemorrhage control after injury could change outcome. A large-animal model of lethal, uncontrolled hemorrhage was developed to test whether the use of various hemostatic agents would decrease bleeding and improve early survival. METHODS: A complex groin injury was created in 30 Yorkshire swine (42-55 kg) to produce uncontrolled hemorrhage. This injury included semitransection of the proximal thigh and complete division of the femoral artery and vein. After 5 minutes, the animals were randomized to (n = 6 animals per group) no dressing (ND), standard dressing (SD), SD and Rapid Deployment Hemostat (RDH) bandage, SD and QuikClot hemostatic agent (QC), or SD and TraumaDEX (TDEX). Limited volume 0.9% saline (1,000 mL over 30 minutes) resuscitation was started 30 minutes after injury. We measured blood loss, early mortality (180 minutes), and physiologic markers of hemorrhagic shock (e.g., cardiac output, blood pressure, hemoglobin, metabolic acidosis). RESULTS: Application of wound dressing decreased mortality in all groups compared with the ND group (83% mortality). However, this difference was significant (p < 0.05) only for the QuikClot hemostatic agent (0% mortality). Before the application of dressing (first 5 minutes), there were no differences in blood loss between the groups. After application of dressings, the QC group had the lowest blood loss (4.4 +/- 1.4 mL/kg). CONCLUSION: Of the hemostatic agents tested, QuikClot improved survival and decreased bleeding in a swine model of lethal vascular and soft tissue injury.

Animals↗

PubMed2005

Comparison of hemorrhage control agents applied to lethal extremity arterial hemorrhages in swine.

BACKGROUND: QuikClot powder (QC), chitosan dressing (CD), and fibrin sealant dressing (FSD) are new hemostatic products touted to be more effective in controlling severe extremity bleeding than the current standard gauze dressing. All have been utilized in the global war on terrorism. Our objective was to evaluate the hemostatic efficacy of these three products in a model of severe extremity arterial hemorrhage that could not be stopped by standard gauze treatment. METHODS: A model of severe extremity arterial hemorrhage was developed in swine that was 100% fatal with standard gauze application and manual compression. The Army Field Bandage (AFB) was the standard gauze control. Anesthetized animals (n = 60, 15/group, 37.7 +/- 2.5 kg) were splenectomized and instrumented. A reproducible femoral artery injury was created using a 6 mm aortic punch, and free bleeding was allowed for 45 seconds. Each hemostatic agent was applied twice with three-minute compressions. All products were applied on actively bleeding wounds through a pool of blood. Fluid resuscitation was started with the first compression and titrated to a mean pressure of 65 mm Hg. Animals were observed for 180 minutes or until death. Endpoints were percent survival, survival time, blood loss, resuscitation volume, wound temperatures and tissue histology. Data are expressed as mean +/- SD and analyzed by Fisher's exact, logrank, and nonparametric ANOVA tests. RESULTS: Baseline physiologic parameters were similar among groups. AFB did not produce hemostasis. QC also showed no hemostatic benefit, and QC treatment markedly increased maximum wound temperatures to an average of 70.8 +/- 4.2 degrees C (p < 0.001). CD stopped bleeding temporarily in only one animal. There were no survivors in the AFB, QC, or CD groups. CD numerically prolonged survival time (58.9 +/- 21.1 minute) compared with the control (38.4 +/- 24.7 minutes, p = 0.045) but the difference was not significant. FSD reduced bleeding (p < 0.05) and prevented exsanguination in 10/15 (2/3) animals, and resulted in a significantly longer average survival time (p < 0.0001). CONCLUSION: FSD was superior to other currently utilized hemostatic products in controlling lethal arterial hemorrhage in this model of a fatal extremity wound. CD showed some hemostatic benefit. The exothermic reaction of QC was significant and resulted in gross and histologic tissue changes of unknown clinical significance. Controlled human studies with the promising products are required.

Animals↗

PubMed2006

A special report on the chitosan-based hemostatic dressing: experience in current combat operations.

BACKGROUND: Hemorrhage remains a leading cause of death in both civilian and military trauma patients. The HemCon chitosan-based hemostatic dressing is approved by the US Food and Drug Administration (FDA) for hemorrhage control. Animal data have shown the HemCon dressing to reduce hemorrhage and improve survival. The purpose of this article is to report preliminary results of the hemostatic efficacy of the HemCon dressing used in the prehospital setting on combat casualties. METHODS: A request for case information on use of HemCon dressings in Operation Iraqi Freedom and Operation Enduring Freedom was sent to deployed Special Forces combat medics, physicians, and physician assistants. RESULTS: Sixty-eight uses of the HemCon dressing were reported and reviewed by two US Army physicians. Four of the 68 cases were determined duplicative resulting in a total of 64 combat uses. Dressings were utilized externally on the chest, groin, buttock, and abdomen in 25 cases; on extremities in 35 cases; and on neck or facial wounds in 4 cases. In 66% of cases, dressings were utilized following gauze failure and were 100% successful. In 62 (97%) of the cases, the use of the HemCon dressing resulted in cessation of bleeding or improvement in hemostasis. There were two reported dressing failures that occurred with blind application of bandages up into large cavitational injuries. Dressings were reported to be most useful on areas where tourniquets could not be applied to control bleeding. The dressings were reported to be most difficult to use in extremity injuries where they could not be placed easily onto or into the wounds. No complications or adverse events were reported. CONCLUSION: This report on the field use of the HemCon dressing by medics suggests that it is a useful hemostatic dressing for prehospital combat casualties and supports further study to confirm efficacy.

Bandages↗

PubMed1989

Intravenous regional anaesthesia of the arm. Effect of the technique of exsanguination on the quality of anaesthesia and prilocaine plasma concentrations.

The effects of different techniques of exsanguination of the upper arm during intravenous regional anaesthesia on prilocaine plasma concentrations, quality of anaesthesia, toxic symptoms after deflation of the tourniquet and injection pressure of the anaesthetic were studied in 10 healthy male volunteers. The nondominant arm was exsanguinated using either Esmarch's bandage or elevation of the arm for 2 minutes plus arterial occlusion by compression of the brachial artery. The injection pressure after the prilocaine dose (3 mg/kg) was significantly higher in the elevation group (maximally 98 mmHg). There were no statistically significant differences in the onset of, or recovery from, anaesthesia between the groups. Various mild toxic symptoms were experienced in the central nervous system after deflation of the tourniquet. However, there was no correlation between the two techniques and the degree of severity of the toxic symptoms. The highest single venous plasma concentration (total) of prilocaine was 2.3 micrograms/ml measured from the contralateral cubital vein (elevation group, 2 minutes). The differences in prilocaine concentrations between the groups were not statistically significant.

Adult↗

PubMed1993

Leg elevation and wrapping in the prevention of hypotension following spinal anaesthesia for elective caesarean section.

Ninety-seven parturients undergoing elective Caesarean section were allocated randomly to have their legs elevated to approximately 30 degrees on pillows or elevated and wrapped with elasticated Esmarch bandages or neither (controls) following spinal anaesthesia. All patients received intravenous crystalloid (20 ml.kg-1 over 20 min) prior to spinal injection and were placed in the left lateral tilt position. Significant hypotension was treated with intravenous ephedrine in 5 mg bolus doses. Leg wrapping resulted in a significant reduction in the incidence of postspinal hypotension in comparison to the control group (18% compared to 53%, p = 0.004). This represents a five-fold reduction in the likelihood of postspinal hypotension (odds ratio 5.3, 95% CI 1.7-16.3). Leg elevation alone did not significantly reduce the incidence of hypotension (39%). There was no significant difference in the time of onset of hypotension between the groups. For those patients requiring ephedrine, there was no significant difference in mean dose requirements between the groups. The use of leg compression immediately postspinal provides a simple means of reducing the accompanying hypotension and should be used more widely.

Adult↗

PubMed1993

The effect of compression on venous stasis.

Skin blood flow in the lower leg is increased by external compression in standing subjects. This prevents the hypoxia induced by standing. The maximum increase in oxygen tension is seen when the external pressure is 40-50 mmHg. Pressures in the range of those produced by lightweight elastic stockings were found to be ineffective. Our results uphold the commonly held clinical opinion that only compression bandages or strong stockings are effective in the treatment of venous ulcers. External compression when the subject is recumbent causes skin oxygen tension to fall. Uniform external pressure exceeding 10 mmHg should therefore be avoided in the prophylactic treatment of post-operative deep-vein thrombosis. This observation suggests that when the patient is confined to bed, only lightweight stockings are safe in the prophylaxis of post-operative deep-vein thrombosis.

Adult↗

PubMed2006

Efficacy and safety of 'wet-wrap' dressings as an intervention treatment in children with severe and/or refractory atopic dermatitis: a critical review of the literature.

BACKGROUND: During the last two decades wet-wrap treatment (WWT) has been advocated as a relatively safe and effective treatment modality in children with severe and/or refractory atopic dermatitis (AD). Unfortunately, there are still many unsolved issues concerning the use of wet-wrap dressings in patients with AD. OBJECTIVES: To make an inventory of the different methodologies and to evaluate the currently available evidence for the use of WWT as an intervention treatment in children with severe and/or refractory AD. METHODS: We performed a search of the literature via the online PubMed database. Reference lists from relevant articles were scanned for additional publications. Publications describing a treatment modality for children with severe and/or refractory AD, which included the application of wet dressings, were collected and evaluated using the guidelines of the NHS Centre for Reviews and Dissemination, University of York. RESULTS: Twenty-four publications were included for evaluation. Eleven of the publications detailed original clinical studies (study design level 2-4), while 13 revealed expert opinions (study design level 5). Evidence levels did not exceed level 4. CONCLUSIONS: Large prospective studies evaluating the efficacy and safety profile of WWT are lacking. We were able to formulate the following conclusions with a grade C of recommendation. (i) WWT using cream or ointment and a double layer of cotton bandages, with a moist first layer and a dry second layer, is an efficacious short-term intervention treatment in children with severe and/or refractory AD. (ii) The use of wet-wrap dressings with diluted topical corticosteroids is a more efficacious short-term intervention treatment in children with severe and/or refractory AD than wet-wrap dressings with emollients only. (iii) The use of wet-wrap dressings with diluted topical corticosteroids for up to 14 days is a safe intervention treatment in children with severe and/or refractory AD, with temporary systemic bioactivity of the corticosteroids as the only reported serious side-effect. (iv) Lowering the absolute amount of applied topical corticosteroid to once daily application and further dilution of the product can reduce the risk of systemic bioactivity.

Adolescent↗

PubMed1994

Nursing treatment of patients with chronic leg ulcers in the community.

A descriptive survey of current reported practice by 146 community nurses for their nursing treatment of leg ulcers was undertaken. Sixty-four per cent of nurses reported they would apply compression bandages to only venous ulcers; in only 23% of cases could the products described achieve an adequate level of compression. A variety of modern wound dressings were used by the nurses; 89% of nurses reported using a combination of different products layered over the ulcer. There is no evidence that this has any beneficial effect and could therefore be a potential waste of money, as well as contributing to allergic skin reactions. It would be useful if primary-health-care teams and Family Health Service Authority information pharmacists formulated protocols based upon effective treatments for patients with chronic leg ulcers.

Bandages↗

PubMed2005

Older patients' experience of dressing changes on venous leg ulcers: more than just a docile patient.

AIM AND OBJECTIVE: The aim of this paper was to describe the lived experiences of older patients with venous leg ulcers, during dressing changes as out patients with a focus of their concerns about care interventions. Research on wound care management has focused on treatment of venous leg ulcer, wound assessments and the choice of dressing material. Few studies have focused on the patients' experience of dressing changes. DESIGN: Fifteen older people with verified venous leg ulcers were recruited in a metropolitan area of Sweden. Data were collected with research interviews in the form of dialogue. METHOD: Data were analysed with an interpretative phenomenological method developed by Benner. RESULTS: Twelve women and three men participated. The themes were: 'being cared for with a skillful touch', 'feelings of belonging, continuity and affinity', and 'being suppressed into a state where one loses control, leading to feelings of discomfort'. The participants' experiences varied. Some were satisfied and felt that there was a mutual understanding between caregivers and patients, while others were dissatisfied and felt objectified. Understanding the patients as human beings and considering illness as lived experience helped the care providers to perform skillful wound care, in an atmosphere of mutual understanding. CONCLUSION: The patients suffering from venous leg ulcers wanted to feel worthy of wound treatment and to meet skillful, confident and gentle nurses in a sharing atmosphere. Nurses must be perceptive to the individual's bodily experience of the leg ulcer. RELEVANCE TO CLINICAL PRACTICE: Wound care requires a multidimensional clinical approach that involves not only medical and technical care strategies of dressings and bandages, but also aspects that concern the situated-based illness experience that persons suffering from leg ulcers may face.

Aged↗

PubMed2006

Treatment of patients with atopic dermatitis using wet-wrap dressings with diluted steroids and/or emollients. An expert panel's opinion and review of the literature.

BACKGROUND: The use of dampened bandages to reduce inflamed eczema (synonyme dermatitis) is an old remedy. In order to evaluate the current indications for so-called wet-wrap treatment (WWT) for atopic dermatitis (AD), and to compare the different currently recognized methods, a group of experts critically reviewed their own expertise on WWT in respect to the existing literature on the subject. RESULTS: WWT is well tolerated in eczema due to the cooling effect on the skin and the rapid improvement in skin inflammation. It has been shown to be an extremely effective treatment for acute erythrodermic dermatitis, therapy-resistant AD and intolerable pruritus. Advantages of WWT include rapid response to therapy, reduction in itch and sleep disturbance, and potential for reduction in usage of topical corticosteroids (TCS). However, disadvantages include high cost, the necessity for special training in usage, potential for increased TCS absorption, increased cutaneous infections and folliculitis, and poor tolerability. Precautions to reduce the risks of long-term treatment should include education, monitoring of weight and height and, if necessary, serum cortisol levels. In adolescents the risk of striae from TCS absorption around puberty is high, and WWT with TCS in this age group should be used as a short-term therapy only and with extreme caution. To reduce risks, dilutions of steroids may be used ranging from 5 to 10%. In the maintenance phase this treatment can be rotated with the use of emollients only. Low potency TCS should be used on the face (with a mask). CONCLUSION: WWT using diluted steroids is a relatively safe addition to the therapeutic treatment options for children and adults with severe and/or refractory AD. Explanation and education is extremely important in the treatment of AD and WWT should only be employed by practitioners trained in its use. Specialized nursing care is essential, especially when using WWT for prolonged periods.

Bandages↗

PubMed1990

Late symptoms after pregnancy-related deep vein thrombosis.

Thromboembolism during pregnancy is a rare complication with a potential fatal outcome. Very little is known about long-term effects and therefore 104 women with thrombosis during pregnancy or puerperium were identified and their subjective complaints were assessed in a questionnaire. All had their thrombosis diagnosed by objective methods and the median follow-up time was 11 years. In spite of anticoagulant treatment only 22% were without complaints; 4% had ulceration, all occurring in the group with thrombosis during pregnancy. Significantly more women who had had their thrombosis during pregnancy used compression bandages than those who had their thrombosis during puerperium. The severity of the symptoms increased with the increasing number of thromboses. Anticoagulant therapy of the acute episode does not appear to alter the degree of long-term handicap in the lower limbs.

Adolescent↗

PubMed1994

Treatment of pyoderma gangrenosum with cultured keratinocyte autografts.

BACKGROUND: Pyoderma gangrenosum is an uncommon chronic skin disease characterized by rapidly enlarging cutaneous ulcers. Immunosuppressive agents, such as corticosteroids, are the mainstay of therapy. OBJECTIVE: We describe a patient with pyoderma gangrenosum treated with cultured keratinocyte autografts for a full-thickness ulcer located on the dorsal and lateral aspects of the foot. METHODS: After stabilizing the ulcer with intralesional and systemic corticosteroids, the ulcer was debrided and cultured keratinocyte autografts were secured with nylon mesh. An outer dressing of gauze and elastic bandage was used. RESULTS: The patient had > 95% "take" of the grafts and the ulcer was fully healed in less than 1 month. The grafted area preserved the clinical phenotype of the palmar skin from which the original biopsy was taken. CONCLUSION: Cultured keratinocyte autografts can provide permanent wound coverage for patients on high doses of immunosuppressive medications.

Administration, Oral↗

PubMed2000

Bier block exsanguination: a volumetric comparison and venous pressure study.

OBJECTIVES: Intravenous regional anesthesia (IVRA) is a useful ED anesthetic technique. However, venous pressure elevation during injection can cause anesthetic leakage and toxicity. This is minimized by preinjection limb exsanguination. Although standard, Esmarch exsanguination is intolerable with limb trauma. Thus, the authors' objective was to study alternative methods. METHODS: Volunteers had upper limb exsanguination performed by Esmarch bandage, arm elevation/arterial compression (AE/AC), and a pneumatic vinyl splint. Resultant volume changes, measured by volume displacement, were normalized, and expressed as percent decreases from baseline. Volume changes of all three methods were compared. The physiologic effectiveness of the AE/AC method was tested by measuring IV pressures during simulated IVRA. Attainment of maximum venous pressure (MVP) indicated leakage under the tourniquet. RESULTS: All methods reduced limb volume compared with baseline (p < 0.05). No difference occurred between AE/AC and vinyl splint exsanguination (p > 0.99), but neither method was as effective as Esmarch (p < 0.05). Gender differences were noted in absolute volumes exsanguinated, but there was no difference in percent exsanguination. The AE/AC method was the simplest procedure to perform. Peak IV pressure during simulated IVRA after AE/AC was 85 mm Hg (males), and 199 mm Hg (females) (p < 0.05). The MVP was not reached. CONCLUSIONS: While Esmarch was the most effective exsanguinating method, the two alternatives provided significant and equivalent decreases in limb volume. The AE/AC technique was physiologically effective in preventing attainment of MVP. Further studies are indicated to determine the clinical effectiveness of this technique in providing anesthesia for patients with limb trauma.

Adolescent↗