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1.
J Vasc Access ; 9(1): 39-44, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18379979

RESUMO

PURPOSE: The aim of this study was to evaluate the midterm performance of brachial vein arteriovenous fistulas (AVFs) and to compare this performance with arteriovenous grafts (AVGs) and basilic vein transposition AVFs. METHODS: A retrospective analysis was performed. Between December 2002 and October 2006, 149 AV access procedures consisting of brachial vein transposition AVFs (11 one-stage and 2 two-stage procedures), basilic vein transposition AVFs (n=42), and AVGs (n=94) were performed in 141 patients. RESULTS: 73% of one-stage brachial vein AVF patients experienced at least one complication during follow-up vs. 52% of the basilic vein transposition AVF group and 55% of the AVG group. The primary patency rates at 12 months for one-stage brachial vein AVFs, basilic vein AVFs, and AVGs were 24, 45 and 50%, respectively. The assisted primary patency rates were 45, 74 and 63%, and the secondary patency rates were 45, 74 and 78%, respectively. A significant difference in the overall secondary patency rates between one-stage brachial vein AVF and AVGs (p=0.015) was detected. Significance was approached between one-stage brachial vein AVFs and basilic vein AVFs overall assisted primary patency (p=0.055) and secondary patency (p=0.055) rates. CONCLUSION: The brachial vein transposition, when done as a one-stage procedure, is associated with inferior patency rates when compared to the basilic vein transposition AVF and AVG. Therefore, in the setting of inadequate cephalic and basilic vein, a prosthetic graft is superior to a brachial vein transposition. A two-stage procedure, as suggested by others, may improve the results of this technique.


Assuntos
Derivação Arteriovenosa Cirúrgica/instrumentação , Implante de Prótese Vascular/métodos , Prótese Vascular/normas , Veias Braquiocefálicas/transplante , Cateteres de Demora , Diálise Renal/métodos , Grau de Desobstrução Vascular/fisiologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Veias Braquiocefálicas/diagnóstico por imagem , Veias Braquiocefálicas/fisiologia , Feminino , Seguimentos , Humanos , Falência Renal Crônica/terapia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resultado do Tratamento , Ultrassonografia Doppler Dupla
2.
Phlebology ; 30(9): 627-31, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25300313

RESUMO

OBJECTIVE: To identify the anatomical and clinical parameters that predict lack of regression of superficial varicosities after ablation of the great saphenous vein. METHODS: Symptomatic patients treated with endovenous ablation from August 2006 to July 2013, by a single surgeon, were included. Recorded parameters included age, sex, size, and extent of varicosities (class I-IV) (patient standing), and diameter and length (patient supine) of treated great saphenous vein. Varicose vein classification was defined as: class I ≤6 mm and localized to thigh or leg, class II ≤6 mm and present in the thigh and leg (extensive), class III >6 mm and localized to the thigh or leg, and class IV >6 mm and extensive. "Excellent" results were defined as complete resolution of varicosities, "good" results as incomplete resolution, and "poor" results as no improvement. RESULTS: A total of 267 patients and 302 consecutive limbs were included in the study. There were 175 females (65.5%), and the mean age was 54 years old (22-92). The CEAP classification was as follows: C2 (81.5%), C3 (6.3%), C4 (7.9%), C5 (2.0%), and C6 (2.3%). Great saphenous vein diameters was significantly larger in patients with C3-C6 (proximal 0.84 ± 0.25 versus 0.65 ± 0.21, p = < 0.0001, distal 0.58 ± 0.18 versus 0.44 ± 0.13, p < 0.0001) or class III-IV varicose veins (proximal 0.85 ± 0.25 versus 0.75 ± 0.27, p = 0.012, distal 0.62 ± 0.62 versus 0.50 ± 0.17, p < 0.0001). Class III-IV limbs had a "good/poor" result 69.8% of the time, as compared to 51.9% of the limbs class I-II varicose veins (p = 0.002). CONCLUSIONS: Advanced chronic venous disease (C3-C6) patients have larger diameter great saphenous veins, reflecting the progressive nature of the disease. Patients with more severe varicosities regardless of CEAP class were more likely to require a secondary procedure. The severity of the varicosities may not correlate with the degree of venous disease, but it is an indication of which patients should undergo secondary procedures, possibly with a one-stage approach.


Assuntos
Flebotomia/métodos , Veia Safena/fisiopatologia , Escleroterapia/métodos , Varizes/fisiopatologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Bases de Dados Factuais , Progressão da Doença , Feminino , Humanos , Lasers , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Resultado do Tratamento , Ultrassonografia Doppler Dupla , Insuficiência Venosa/terapia , Adulto Jovem
3.
Am J Psychiatry ; 147(6): 766-71, 1990 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-2343922

RESUMO

The authors examined the effect of age on sexual function and behavior and on nocturnal penile tumescence in 65 healthy married men aged 45 to 74 years. There was a significant negative relation between age and sexual desire, arousal, and activity and an increasing prevalence of sexual dysfunction with age but no age difference in sexual enjoyment and satisfaction. Significant age-related decreases in frequency, duration, and degree of nocturnal penile tumescence were found. Sexual desire, arousal, coital frequency, and prevalence of erectile problems correlated with nocturnal penile tumescence measures. The authors discuss the relevance of these findings for the understanding of sexual function in aging men.


Assuntos
Envelhecimento/fisiologia , Comportamento Sexual/fisiologia , Idoso , Humanos , Libido/fisiologia , Masculino , Pessoa de Meia-Idade
4.
J Immunol Methods ; 67(1): 53-61, 1984 Feb 24.
Artigo em Inglês | MEDLINE | ID: mdl-6607958

RESUMO

Cytotoxic rat alloantibodies were quantitated using concanavalin-A induced blasts as target cells. [3H]thymidine incorporation by such cells was linearly related to their number. Serial dilutions of cytotoxic antisera were incubated with a small number of target cells in presence of rabbit, guinea pig or rat complement. Following a short incubation, cultures were pulsed with [3H]thymidine to estimate the number of live cells. Cytotoxicity titers were calculated according to conventional von Krogh analysis as the reciprocal of the dilution yielding 50% lysis. Such titers were virtually identical to titers obtained in assays in which the extent of cytolysis was determined by trypan blue or ethidium bromide exclusion. The assay, which is carried out in microtiter plates, is quantitative, economical, and objective. Furthermore, automatic harvesting of the cultures allows the rapid processing of large numbers of samples.


Assuntos
Soro Antilinfocitário/análise , Concanavalina A/farmacologia , Testes Imunológicos de Citotoxicidade/métodos , Ativação Linfocitária , Animais , Proteínas do Sistema Complemento/fisiologia , Etídio , Cobaias , Masculino , Coelhos , Ratos , Ratos Endogâmicos ACI , Ratos Endogâmicos Lew , Timidina/metabolismo , Azul Tripano
5.
Transplantation ; 43(1): 140-5, 1987 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-3541314

RESUMO

Previous studies from our laboratory showed that pretransplant conditioning with fresh donor-specific blood (DST) combined with cyclosporine (CsA) resulted in long-term prolongation of ACI heterotopic cardiac allografts in LEW recipients treated with subtherapeutic doses of CsA. The concomitant administration of CsA profoundly reduced but did not eliminate the DST-induced sensitization. The purpose of the present study was to investigate in the ACI-to-LEW cardiac allograft model whether heat-treatment of the blood would further reduce the sensitizing potential of DST while maintaining their benefits in our protocol. Fresh heparinized ACI blood was heated at 45 degrees C for 60 min. Then 1.5 ml was administered i.v. to LEW rats on day -8 with respect to grafting (day 0). Controls received heat-treated BUF blood. Donor heat-treated blood (HT-DST), unlike fresh blood, did not induce a humoral cytotoxic response and resulted in the prolongation of cardiac allograft survival (13.2 +/- 2.7 vs. 7.2 +/- 1.0; P less than 0.01). Treatment of HT-DST recipients with postoperative subtherapeutic doses of CsA (2.5 mg/kg/day x 30) extended graft survival (46.6 +/- 22.0 vs. 7.7 +/- 2.0 days; P less than 0.01). The combined pretransplant administration of HT-DST and CsA followed by posttransplant subtherapeutic doses of CsA led to long-term prolongation of cardiac grafts (122.0 +/- 73.0 vs. 31.7 +/- 22.0 days; P less than 0.01). These studies demonstrate that heat-treatment of allogeneic blood eliminates the humoral responses to DST and actually enhances their beneficial effects in terms of graft survival. Such effects can be dramatically increased by CsA. The possible mechanism of these phenomena are discussed.


Assuntos
Transfusão de Sangue , Ciclosporinas/administração & dosagem , Terapia de Imunossupressão/métodos , Animais , Formação de Anticorpos/efeitos dos fármacos , Sangue/imunologia , Ciclosporinas/farmacologia , Citotoxicidade Imunológica/efeitos dos fármacos , Esquema de Medicação , Sobrevivência de Enxerto/efeitos dos fármacos , Transplante de Coração , Temperatura Alta , Isoantígenos/administração & dosagem , Cuidados Pré-Operatórios , Ratos , Ratos Endogâmicos
6.
Transplantation ; 49(1): 76-80, 1990 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-2301032

RESUMO

We attempted cessation of prednisone therapy in 16 pediatric renal allograft recipients who were between the ages of 3 1/2 and 16 years at the time of transplantation. Fourteen had primary grafts and 2 had second grafts. Nine had cadaver and 7 had living-related donor grafts. At the time of cessation of prednisone, cyclosporine was the only other immunosuppressive therapy for 15 of the patients and 1 patient was receiving CsA and azathioprine. All the patients had stable serum creatinines at the time prednisone was stopped, between 7 months and 5 years posttransplantation. Seven patients have had no episodes of rejection, continuing to receive CsA as their only immunosuppressive therapy and have stable renal function between 16 months and 3 1/2 years (mean: 2 years) after stopping prednisone. Stopping the small maintenance dose of prednisone resulted in improved growth in patients whose epiphyses were not fused. They improved their weight:height ratios and lost their cushingoid appearance. Serum cholesterol levels declined significantly. Patients who required antihypertensive drugs to control their blood pressure while receiving prednisone required fewer or no drugs when off prednisone. Nine patients had acute rejection episodes and were put back on maintenance prednisone following a 3-day steroid pulse. All these patients had a prompt improvement in renal function following the steroid pulse. However, only 3 stabilized function at preprotocol baseline Scr. Four currently have functioning grafts with Scr greater than the preprotocol Scr. Two patients have returned to dialysis. Although stopping steroids is a worthy goal in pediatric renal allograft recipients, we cannot recommend this strategy as routine management because of the 56% rate of acute rejection episodes in the patients who had prednisone withdrawn.


Assuntos
Ciclosporinas/uso terapêutico , Transplante de Rim , Prednisona/uso terapêutico , Adolescente , Criança , Pré-Escolar , Colesterol/sangue , Feminino , Seguimentos , Rejeição de Enxerto , Crescimento , Humanos , Masculino , Prednisona/efeitos adversos , Síndrome de Abstinência a Substâncias , Transplante Homólogo
7.
Transplantation ; 45(6): 1021-6, 1988 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-3260047

RESUMO

We investigated the effect of pretransplant conditioning as a way to reduce the need for the aggressive immunosuppressive therapy reportedly required in small bowel (SB) allograft recipients. LEW rats were conditioned with (1) a donor-specific blood transfusion (DST) on day -8 and a concurrent 5-day course of CsA (10 mg/kg/day); (2) a nonspecific blood transfusion and CsA; (3) CsA alone. A 10-cm segment of the host native bowel was then replaced with an equivalent segment of SB obtained from ACI rats. Postoperative treatment consisted of CsA at 2.5 mg/kg/day for 30 days. Rats conditioned with a nonspecific transfusion and CsA or with CsA alone survived for 14.1 +/- 5.8 and 18.3 +/- 5.7 days, respectively. In contrast, rats conditioned with DST and CsA survived for 60.3 +/- 36.2 days (P less than 0.001 vs. both controls). Biopsies taken from long-term survivors showed a normal bowel architecture. The function of the allografts was studied in a group of animals totally deprived of their native bowel and transplanted with a 30-cm segment of ACI SB. CsA-DST-treated recipients survived an average of 90 +/- 43 days and grew at a rate comparable to isografted animals. Treated allograft recipients had maltose absorption indistinguishable from isografted controls at all times tested. In contrast, maltose absorption was severely impaired in recipients rejecting their grafts. This study demonstrates that long-term survival of SB allograft recipients can be achieved with good functional results with low doses of CsA in recipients conditioned with DST and CsA.


Assuntos
Transfusão de Sangue , Ciclosporinas/administração & dosagem , Intestino Delgado/transplante , Cuidados Pré-Operatórios , Transplante Homólogo/mortalidade , Animais , Esquema de Medicação , Rejeição de Enxerto , Terapia de Imunossupressão/métodos , Intestino Delgado/patologia , Masculino , Ratos , Ratos Endogâmicos ACI , Ratos Endogâmicos BUF , Ratos Endogâmicos Lew , Doadores de Tecidos
8.
Transplantation ; 39(1): 1-5, 1985 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-3880956

RESUMO

This study was aimed at ascertaining whether long-term graft survival was achievable with short term cyclosporine (CsA) therapy or with subtherapeutic doses of CsA in rats conditioned with blood transfusions (BT) combined with CsA. Previous studies had shown that donor-specific transfusions combined with a short course of CsA interacted synergistically, resulting in considerable prolongations of ACI and BUF grafts in LEW hosts receiving no postoperative treatment. The donor-specific depression of alloreactivity was confirmed in the present study by showing a depression of mixed-lymphocyte reaction (MLR) reactivity as well as of humoral antidonor responses in BT-CsA conditioned rats. The effects of postoperative CsA were then studied in recipients conditioned with BT-CsA or BT alone. ACI and BUF cardiac graft survival in LEW hosts conditioned with BT and treated with a five-day postoperative course of CsA (20 mg/kg/day) were indistinguishable from graft survival in untransfused hosts (ACI: 35.6 +/- 15.5 vs. 38.8 +/- 7.4; BUF: 58.4 +/- 39.8 vs. 48.0 +/- 21.7) indicating no interaction between BT and CsA under these conditions. In contrast, the effect of a post-operative five-day course of CsA (10 mg/kg/day) was extended by conditioning the recipients with donor-specific BT and CsA (ACI:41.7 +/- 7.0 vs. 27.4 +/- 11.6; P less than 0.05). More remarkably, a thirty-day course of subtherapeutic doses of CsA (2.5 mg/kg/day) resulted in long-term prolongation (greater than 100 days) of ACI grafts in a large proportion of hosts conditioned with donor-specific BT and CsA, while the majority of controls conditioned with nonspecific BT and CsA or CsA alone rejected their grafts within three weeks (P less than 0.01). The possible mechanisms of this phenomenon are discussed.


Assuntos
Transfusão de Sangue , Ciclosporinas/uso terapêutico , Facilitação Imunológica de Enxerto , Sobrevivência de Enxerto , Transplante de Coração , Animais , Formação de Anticorpos/efeitos dos fármacos , Relação Dose-Resposta Imunológica , Facilitação Imunológica de Enxerto/métodos , Sobrevivência de Enxerto/efeitos dos fármacos , Imunidade Celular/efeitos dos fármacos , Isoantígenos/administração & dosagem , Masculino , Período Pós-Operatório , Cuidados Pré-Operatórios , Ratos , Ratos Endogâmicos ACI , Ratos Endogâmicos BUF , Ratos Endogâmicos Lew
9.
Transplantation ; 19(4): 291-4, 1975 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-1098235

RESUMO

The effect of cyproheptadine, a potent platelet deaggregator, was investigated in rats bearing renal allografts. Thirty-three bilaterally nephrectomized LEW rats received orthotopic transplants of a (LEW X BN)F-1 kidney. Fourteen rats were treated with cyproheptadine, 1.5 mg/kg i.m. daily, for 60 days after transplantation; the remaining animals served as controls. The median allograft survival time in the cyproheptadine group was prolonged to 64 days compared to 12 days in the untreated group (P less than 0.005). In the cyproheptadine group the blood urea nitrogen rose to over 150 mg/100 ml 1 week after transplantation, fell to 80-120 mg/100 ml, and then rose steadily from the day after transplantation until the death of the animals. Despite prolonged survival, cyproheptadine-treated animals usually showed the histological findings of acute and chronic renal rejection. Cyproheptadine may be a useful adjunct to immunosuppression in the management of human renal allotransplantation.


Assuntos
Ciproeptadina/farmacologia , Rejeição de Enxerto/efeitos dos fármacos , Transplante de Rim , Transplante Homólogo , Animais , Nitrogênio da Ureia Sanguínea , Rim/patologia , Masculino , Ratos , Ratos Endogâmicos Lew
10.
Pediatrics ; 75(4): 741-4, 1985 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-3982907

RESUMO

In order to elucidate whether tissue damage produced on occasion by intramuscular injection of long-acting penicillin is due to accidental intra-arterial injection or vasospasm, two types of experiments were carried out in rabbits. In the first set of experiments, six New Zealand White rabbits were given intra-arterial injections of 0.4 mL of a mixture containing 300,000 U of penicillin G benzathine and 300,000 units of penicillin procaine per milliliter (Bicillin C-R) into the left femoral artery and 0.4 mL of normal saline into the right femoral artery as autocontrol. In a second set of experiments, 0.4 mL of the same penicillin preparation was injected in the space surrounding the left femoral artery in five New Zealand rabbits, and 0.4 mL of normal saline was injected in a similar fashion around the right femoral artery as control. The legs of the rabbits that received the intra-arterial injection of penicillin invariably developed ischemic manifestations. None of the legs of rabbits given intra-arterial injections of normal saline had pathologic manifestations. None of the rabbits that received the periarterial penicillin preparation or normal saline developed abnormalities. These results strongly suggest that the tissue damage produced by penicillin is secondary to the intra-arterial administration of the drug.


Assuntos
Penicilinas/administração & dosagem , Animais , Preparações de Ação Retardada , Combinação de Medicamentos/administração & dosagem , Combinação de Medicamentos/toxicidade , Epitélio/patologia , Segurança de Equipamentos , Artéria Femoral , Gangrena/induzido quimicamente , Membro Posterior , Injeções Intra-Arteriais , Injeções Intramusculares/instrumentação , Erros de Medicação , Músculos/patologia , Necrose/induzido quimicamente , Penicilina G Benzatina/administração & dosagem , Penicilina G Benzatina/toxicidade , Penicilina G Procaína/administração & dosagem , Penicilina G Procaína/toxicidade , Penicilinas/toxicidade , Coelhos , Pele/patologia , Seringas
11.
Surgery ; 120(1): 30-3, 1996 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-8693419

RESUMO

BACKGROUND: The purpose of this study was to evaluate and analyze arterial inflow (AI) in lower extremities of patients with symptoms of chronic venous insufficiency (CVI) and of members of a healthy control group. METHODS: Foot mercury-in-silicon strain-gauge plethysmography was used to measure AI, venous reflux, and muscle pump efficiency in 388 extremities of 194 patients with symptoms of CVI. Severe stage III symptoms (Society for Vascular Surgery/International Society for Cardiovascular Surgery classification) were present in 84 extremities, moderate stage II symptoms were present in 81 extremities, and mild stage I symptoms were present in 158 extremities. No symptoms, stage 0, were found in 65 contralateral extremities of patients with unilateral symptoms. Identical parameters were measured in 70 extremities of 35 healthy subjects in a control group. AI in each staged group was compared with that of the control group and with that of the other groups with symptoms with the use of Kruskall-Wallis analysis of multiple variances. RESULTS: The mean AI (+/-SD) in milliliters per 100 ml of foot tissue per minute in the extremities in the control group was 0.82 +/- 0.48. In the extremities without symptoms, contralateral to those with symptoms in patients with unilateral disease, the AI was 1.24 +/- 0.88. In extremities with mild symptoms the AI was 1.54 +/- 1.20, in extremities with moderate symptoms it was 2.88 +/- 1.70, and in extremities with severe symptoms it was 6.25 +/- 4.91. The AI was significantly increased in all extremities of patients with CVI (stages 0 to III) when compared with that of patients in the control group. Extremities with stage II and III disease had significantly higher AI than did extremities with stage 0 and stage I disease. The difference in AI between extremities with stage 0 and I disease was not statistically significant, and no significant difference in AI was seen between extremities with stage II and III disease. CONCLUSIONS: When plethysmographic methods are used to evaluate extremities with CVI, high AI, if not considered, can overrepresent the true magnitude of reflux. High AI may indicate presence of primary anatomic arterioventricular fistulas, or it may be the consequence of inflammatory changes and secondary functional arterioventricular shunting. Increased AI in contralateral extremities with no symptoms may point to the role of high flow in the pathogenesis of CVI. Clarification of this question requires further investigation.


Assuntos
Extremidades/irrigação sanguínea , Hemodinâmica , Insuficiência Venosa/fisiopatologia , Adulto , Idoso , Artérias/fisiopatologia , Doença Crônica , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pletismografia , Estudos Prospectivos , Fluxo Sanguíneo Regional , Insuficiência Venosa/etiologia
12.
Surgery ; 109(5): 567-74, 1991 May.
Artigo em Inglês | MEDLINE | ID: mdl-2020901

RESUMO

Chronic venous disease is increasingly treated surgically with a variety of experimental procedures. Noninvasive volume tests are commonly used before surgery to select patients and after surgery to assess results. Rapid volume changes are considered to indicate regurgitation. Rigorous statistical validation of tests and the confounding nature of unmeasured arterial inflow are seldom considered. Volume changes were measured in 29 control limbs and 35 limbs with venous disease, with mercury-in-silicone rubber strain gauges, for both exercise and elevation. Normalization for arterial flow permitted calculation of the regurgitation rate. Normal (95% confidence) limits for measured and calculated parameters were determined. Specificity was shown by the percent of normal parameter values for control limbs and sensitivity by the percent of abnormal values for extremities with venous disease. Arterial flow significantly altered volume curves. Normalization increased specificity and sensitivity significantly. Calf exercise tests, even normalized, were too insensitive to be reliable. Elevation tests were significantly more sensitive for determining regurgitation. However, exercise tests were useful and supplied important information about the calf muscle pump. We conclude that, as currently used, many limb volume test procedures are unsuitable but could be improved significantly by normalization to reduce the confounding effect of regional arterial flow and use of an elevation test to measure regurgitation.


Assuntos
Determinação do Volume Sanguíneo/métodos , Insuficiência Venosa/diagnóstico , Artérias/fisiologia , Doença Crônica , Teste de Esforço , Pé/irrigação sanguínea , Humanos , Perna (Membro)/irrigação sanguínea , Postura , Estudos Prospectivos , Fluxo Sanguíneo Regional/fisiologia , Sensibilidade e Especificidade , Insuficiência Venosa/fisiopatologia
13.
Surgery ; 101(4): 422-9, 1987 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-3563888

RESUMO

The time for foot volume restoration after exercise is widely used as a measure of venous regurgitation. Since this is also a function of arterial inflow rate, we have tested the hypothesis that uncorrected for arterial inflow, these tests may be misleading. Change in venous foot volume after elevation and on exercise was measured in 44 subjects. Arterial inflow was also determined. In a few patients arterial flow was varied by cooling or by exercise. The times of half-volume restoration were measured. Calculated were: the rate of total blood flow into the foot; the rate of venous regurgitation; and "venous sufficiency indices" for elevation and for exercise with and without correction for arterial inflow rate. These indices combine volume and time data in a single numeric value. Volume change on elevation was uninfluenced by the rate of arterial inflow. Volume change on exercise and the halftime of volume restoration varied significantly with the rate of arterial inflow as did the "venous sufficiency indices." These variances were significantly reduced by correcting for arterial inflow rate. We conclude that for foot volume studies to measure regurgitation and for data obtained at different times to be comparable, corrections must be made for the rate of arterial inflow to the foot.


Assuntos
Pé/irrigação sanguínea , Pletismografia/métodos , Insuficiência Venosa/diagnóstico , Volume Sanguíneo , Teste de Esforço , Feminino , Humanos , Masculino , Matemática , Postura , Fluxo Sanguíneo Regional
14.
Arch Surg ; 112(10): 1260-1, 1977 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-410389

RESUMO

This report describes a new double gastroenterostomy tube. It has been used in patients where delayed oral feedings are anticipated, ie, a perforated duodenal ulcer, suture-plicated, with stenosis of the duodenum; a duodenal ulcer with outlet obstruction treated with vagotomy and gastroenterostomy; and patients with chronic lung disease undergoing gastric surgery and requiring postoperative respiratory assistance. Its use has proved to be beneficial, and it is cheap and allows early enteric feeding.


Assuntos
Nutrição Enteral/instrumentação , Gastrostomia , Humanos
15.
Arch Surg ; 119(9): 1013-7, 1984 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-6477112

RESUMO

Twenty-seven patients (40 extremities) with chronic venous insufficiency and 30 controls (60 extremities) were studied using noninvasive measurements of foot volume (foot mercury strain-gauge plethysmography [FMSGP]). Tests were performed with exercise (sitting) and with elevation (Trendelenburg), with and without tourniquets, to evaluate muscle pump efficiency and valvular competence. Empiric venous sufficiency indexes were calculated for exercise and for Trendelenburg's test. Test results were compared with invasive ambulatory venous pressure (AVP) data (13) and with ascending and retrograde venography (25). Distinctive plethysmographic patterns revealed the insufficiency was saphenous (four), calf perforators (14), saphenous plus perforators (seven), and deep venous (15), including occlusion (four). Correlation with AVP and venography was good but FMSGP was more discriminating, providing precise anatomical information, better reproducibility, and distinguishing poor muscle pump function from regurgitation. Patients accept FMSGP well. Repeated postoperative data are readily obtained for evaluation of surgical procedures.


Assuntos
Pé/irrigação sanguínea , Pletismografia/métodos , Insuficiência Venosa/diagnóstico , Doença Crônica , Teste de Esforço , Feminino , Humanos , Masculino , Mercúrio , Flebografia , Pressão Venosa
16.
Arch Surg ; 121(2): 229-32, 1986 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-3947220

RESUMO

This report presents our experience using double-lumen, silicone rubber, indwelling central venous catheters with a subcutaneous Dacron cuff as access for hemodialysis. Twenty-seven catheters were placed in 27 patients through venous cutdowns. A 10-cm subcutaneous tunnel was created leaving the Dacron cuff 2 cm from the external exit. Sixteen Raaf catheters (lumen diameter [LD], 1 mm), three double-lumen Hickman catheters (LD, 1.6 mm) and eight HemoCath catheters (LD, 2 mm) were used. The tip of the catheter was positioned fluoroscopically in either the superior vena cava or the right atrium. One hundred fifty-nine treatments were done with the Raaf catheters (mean blood flow [MBF], 188.1 +/- 26.4 mL/min); two of these catheters became obstructed and could not be used further. Three double-lumen Hickman catheters were used in 12 hemodialysis treatments (MBF, 216.3 +/- 27.1 mL/min). One hundred fifty-five treatments were done using the HemoCath catheters (MBF, 236.7 +/- 5.5 mL/min). The degree of recirculation of these catheters was 8.56% +/- 4.34%. The major advantages of this modality include simplicity of introduction, lack of serious complications, no sacrifice of major arteries, no need for venipuncture, and potential use in either short- or long-term hemodialysis.


Assuntos
Cateteres de Demora , Veias Jugulares , Diálise Renal , Adulto , Idoso , Humanos , Pessoa de Meia-Idade , Elastômeros de Silicone
17.
Urology ; 25(6): 579-81, 1985 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-3892846

RESUMO

Living-related kidney transplants continue to yield the best results. The two primary approaches for living-related donor nephrectomy are the intraperitoneal and extraperitoneal operations. We herein describe a series of 8 cases in which an eleventh rib intraperitoneal extrapleural incision was used for living-related donor nephrectomy. The advantages of the operation in terms of improved ability to manage vascular anomalies is described. No complication has been encountered.


Assuntos
Transplante de Rim , Nefrectomia/métodos , Doadores de Tecidos , Humanos , Peritônio/cirurgia , Costelas/cirurgia
18.
Am J Surg ; 158(2): 117-20, 1989 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-2667385

RESUMO

A self-sealing polytetrafluoroethelene (PTFE)-silicone graft designed to be used early after implantation was placed in 30 end-stage renal disease patients. Thirty-five conventional PTFE grafts were used in the control group. All patients were followed for 1 year. In the PTFE-silicone graft group, median time for first use was 1 day after implantation. Conventional PTFE grafts were first used 2 to 4 weeks after implantation. Early punctures of the PTFE-silicone grafts (first 10 sessions), although more difficult to perform than late punctures, were not more difficult than punctures of conventional PTFE grafts. Late punctures in PTFE-silicone grafts were easier than conventional PTFE graft punctures. Bleeding after needle removal was significantly decreased after early and late punctures of PTFE-silicone grafts compared with conventional PTFE grafts (p less than 0.001). The PTFE-silicone graft can be used immediately after implantation, sparing patients additional access procedures for short-term dialysis. This results in less morbidity, decreased bleeding complications, shorter hospital stay, and a significant reduction in expenses.


Assuntos
Prótese Vascular , Falência Renal Crônica/cirurgia , Politetrafluoretileno , Elastômeros de Silicone , Ensaios Clínicos como Assunto , Humanos , Pessoa de Meia-Idade , Falha de Prótese , Diálise Renal
19.
Am J Surg ; 170(2): 206-8, 1995 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-7631932

RESUMO

BACKGROUND: Lymphatic leakage is a relatively uncommon but serious complication following vascular procedures. A conservative approach consisting of bed rest, leg elevation, prophylactic antibiotics, compressive dressings, and intermittent aspiration is the most commonly used treatment. Because of the long time it takes to cure this condition and the potential for infections, a more aggressive approach consisting of wound exploration and ligation of the leaking lymphatic has been proposed. We review our experience of the past 3 years treating 17 of these complications by using 1 of these 2 approaches. PATIENTS AND METHODS: Seventeen groin complications were seen over a period of 3 years. Ten (59%) patients were treated by selective ligation assisted with isosulfan blue dye injection, and the remaining 7 (41%) were treated conservatively. RESULTS: Mean hospital stay was 2.4 days (range 1 to 4) for the operative group versus 19 days (range 14 to 42) for the conservative group. One complication was seen in the operative group, whereas 4 (57%) patients developed groin infections following conservative therapy. One (10%) patient developed a recurrence following ligation that was treated successfully by reoperation. CONCLUSION: Our experience with the use of surgical ligation of leaking lymphatic assisted by isosulfan blue, when compared with conservative treatment, has led to a decrease in hospital stay, lower complication rates, and fewer recurrences. In our view, this approach represents the best form of treatment for postoperative groin lymphatic complications.


Assuntos
Doenças Linfáticas/terapia , Sistema Linfático/cirurgia , Complicações Pós-Operatórias/terapia , Procedimentos Cirúrgicos Vasculares , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Virilha , Humanos , Infecções/etiologia , Tempo de Internação , Ligadura , Masculino , Pessoa de Meia-Idade , Reoperação
20.
Am J Surg ; 145(2): 199-201, 1983 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-6824132

RESUMO

Sixty-three patients with inflammatory bowel disease were studied before and after bowel resection. Peripheral lymphocytes, T- and B-cell counts, and skin test reactivity to five recall antigens were determined before operation and 6 to 18 months postoperatively. Twenty-eight patients (44 percent) were unable to react to any skin test initially. Anergic patients had significantly lower lymphocyte and T- and B-cell counts. There was no difference in age, severity or duration of disease, or amount of weight loss between anergic patients and those who responded. Also, there was no difference between patients with ulcerative colitis and those with Crohn's disease. After surgery, 25 previously anergic patients became able to react to skin tests. They also showed a significant increase in T and B cells which did not occur in the previously reactive group. However, the overall peripheral lymphocyte and T- and B-cell counts remained well below those of the normal control subjects. Patients with inflammatory bowel disease that requires surgical treatment have significant immunologic abnormalities. Removal of the diseased bowel, weight gain, and cessation of steroid medication improves skin test reactivity but does not correct the depressed peripheral lymphocyte and especially T-cell counts.


Assuntos
Colite Ulcerativa/imunologia , Doença de Crohn/imunologia , Adulto , Colite Ulcerativa/cirurgia , Doença de Crohn/cirurgia , Humanos , Contagem de Leucócitos , Linfócitos , Testes Cutâneos
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