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1.
Exp Clin Transplant ; 22(Suppl 1): 332-335, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38385420

RESUMEN

OBJECTIVES: The presence of donor-specific antibodies against HLA before kidney transplant has been variably associated with decreased long-term graft survival. Data on the association between pretransplant donor-specific antibodies and rejection and cause of graft failure in recipients of donor kidneys are scarce. MATERIALS AND METHODS: For this study of HLA antibody levels, we analyzed serum samples from 76 patients (48 women and 28 men) who were prepared for kidney transplant at the Baskent University Istanbul Hospital between 2017 and 2022. Levels were determined by using Lifecodes panel reactive antibody class I and II identification kits and Lifecodes LSA class I and II identification kits by the Luminex assay method. RESULTS: Multiple antigen tests showed more than 70% sensitization detected against both class I and class II antigens in our patient group. When some samples were reevaluated with the single-antigen bead method, desensitization values were shown to be considerably reduced compared with values from multiple antigen methods. CONCLUSIONS: The single-antigen-coated bead method can be useful in determining the risk of donor-specific antibodies in highly sensitized patients.


Asunto(s)
Antígenos HLA , Trasplante de Riñón , Masculino , Humanos , Femenino , Isoanticuerpos , Supervivencia de Injerto , Rechazo de Injerto/diagnóstico , Trasplante de Riñón/efectos adversos , Prueba de Histocompatibilidad/métodos
2.
Eur Surg Res ; 64(4): 390-397, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37816336

RESUMEN

INTRODUCTION: Hemorrhage is a challenging complication of pelvic surgery. This study aimed to analyze the causes, management, and factors associated with morbidity in patients experiencing major pelvic hemorrhage during complex abdominopelvic surgery. METHODS: Patients who had major intraoperative pelvic hemorrhage during complex abdominopelvic surgery at 11 tertiary referral centers between 1997 and 2017 were included. Patient characteristics, management strategies to control bleeding, short- and long-term postoperative outcomes were evaluated retrospectively. RESULTS: There were 120 patients with a mean age of 56.6 ± 2.4 years and a mean BMI of 28.3 ± 1 kg/m2. While 104 (95%) of the patients were operated for malignancy, 16 (5%) of the patients had surgery for a benign disease. The most common bleeding site was the presacral venous plexus 90 (75%). Major pelvic hemorrhage was managed simultaneously in 114 (95%) patients. Electrocauterization 27 (23%), pelvic packing 26 (22%), suturing 7 (6%), thumbtacks application 7 (6%), muscle welding 4 (4%), use of energy devices 2 (2%), and topical hemostatic agents 2 (2%) were the management tools. Combined techniques were used in 43 (36%) patients. Short-term morbidity and mortality rates were 48 (40%) and 2 (2%), respectively. High preoperative CRP levels (p = 0.04), history of preoperative radiotherapy (p = 0.04), longer bleeding time (p = 0.006), and increased blood transfusion (p = 0.005) were the factors associated with postoperative morbidity. CONCLUSION: Postoperative morbidity related to major pelvic hemorrhage can be reduced by optimizing the risk factors. Prehabilitation prior to surgery to moderate inflammatory status and prompt action with proper technique to control major pelvic hemorrhage can prevent excessive blood loss in complex abdominopelvic surgery.


Asunto(s)
Hemorragia , Pelvis , Humanos , Persona de Mediana Edad , Estudios Retrospectivos , Hemorragia/etiología , Pelvis/cirugía , Transfusión Sanguínea
3.
Ulus Travma Acil Cerrahi Derg ; 28(12): 1682-1689, 2022 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-36453790

RESUMEN

BACKGROUND: The novel coronavirus disease 2019 (COVID-19) has resulted in major changes in health-care systems and emer-gency surgical interventions. Here, we examined patients with acute appendicitis who presented to emergency departments and com-pared diagnosis, treatment, and post-treatment processes before and during the pandemic period and investigated how the pandemic affected management of acute appendicitis. METHODS: A national, multicenter, and cohort study model was designed that included patients older than 18 years of age diag-nosed with acute appendicitis clinically and/or radiologically, with patients compared before (pre-pandemic period: January 1-April 30, 2019) and after (pandemic period: January 1-April 30, 2020) the pandemic. Our investigation included comparisons of pre-operative imaging methods, presence of plastron appendicitis/abscess, conservative/surgical approach, type of anesthesia given, laparoscopic/open surgical approach, bowel resection rates, drain insertion rates, and presence of post-operative complications RESULTS: For the two study groups, 8972 patients from 69 centers were examined, with 4582 patients operated in the pre-pan-demic period and 4234 patients operated in the pandemic period. During the pandemic period, 63.6% of patients underwent open surgery, whereas 34.4% had laparoscopic surgery. Although 60 patients (1.3%) requested non-operative follow-up in the pre-pandemic period, 94 patients (2.2%) requested this in the pandemic period. When conditions of patients were evaluated regardless of their own wishes, 114 patients (2.4%) before and 163 patients (3.8%) during the pandemic received non-operative follow-up. CONCLUSION: Our study did not show the direct correlation between the application of COVID-19-related restrictions and the severity of acute appendicitis. Although non-operative management rates have been increased during the COVID-19 period, the incidences of both complicated and the uncomplicated appendicitis were similar during the COVID-19 crisis period. Given this infor-mation non-operative management can be employed for patients diagnosed with appendicitis.


Asunto(s)
Apendicitis , COVID-19 , Humanos , Apendicitis/diagnóstico , Apendicitis/epidemiología , Apendicitis/cirugía , COVID-19/epidemiología , Estudios Retrospectivos , Estudios de Cohortes , Enfermedad Aguda
4.
Exp Clin Transplant ; 20(Suppl 3): 49-52, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-35570600

RESUMEN

Late antibody-mediated rejection triggered by donor-specific antibodies is a leading cause of kidney allograft failure. Effective treatment options for late antibody-mediated rejection are limited in renal transplant recipients. Here, we report 2 pediatric cases of severe late antibody-mediated rejection resistant to conventional immunosuppressive therapy who were successfully treated with eculizumab. Two patients who fulfilled the late antibody-mediated rejection diagnostic criteria (positive donor-specific antibodies, elevated mean fluorescence index, acute and/or chronic morphological lesions in the microvasculature, and abnormal kidney function test) were included in this study. Both patients were previously unsensitized with negative panel-reactive antibody. Case 1 was a 12-year-old male patient with kidney failure secondary to vesicoureteral reflux who underwent related-living donor kidney transplantation 2 years ago. Eleven months later, he was diagnosed with late antibody-mediated rejection. Despite an aggressive conventional immunosuppressive regimen, signs of rejection persisted. After the patient was treated with 2 doses of eculizumab, his mean fluorescence index dropped and serum creatinine decreased from 3.8 to 1.5 mg/dL. Case 2 was an unsensitized 16-year-old male patient with kidney failure secondary posterior urethral valve who underwent related-living donor kidney transplantation 4 years ago. Two years later, he was diagnosed with late antibody-mediated rejection. Despite an aggressive conventional immunosuppressive regimen, signs of rejection persisted. After treatment with 2 doses of eculizumab, his mean fluorescence index dropped and serum creatinine decreased from 2.1 to 1.01 mg/dL. In both patients, eculizumab therapy effectively reduced the markers of late antibody-mediated rejection and improved the kidney function.


Asunto(s)
Fallo Renal Crónico , Trasplante de Riñón , Adolescente , Anticuerpos Monoclonales Humanizados/uso terapéutico , Niño , Creatinina , Rechazo de Injerto/tratamiento farmacológico , Rechazo de Injerto/prevención & control , Humanos , Inmunosupresores/efectos adversos , Fallo Renal Crónico/etiología , Trasplante de Riñón/efectos adversos , Masculino , Resultado del Tratamiento
5.
Exp Clin Transplant ; 20(Suppl 1): 31-38, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-35384805

RESUMEN

OBJECTIVES: Although advanced age is no longer considered an absolute contraindication for liver transplant, transplant in elderly patients with comorbid diseases remains debatable because of high risks with surgery. Here, we report patient outcomes in this population. MATERIALS AND METHODS: We retrospectively reviewed medical records of 276 liver transplant recipients, grouped by age. Group 1 (≤59 years old) consisted of 247 recipients, and group 2 (≥60 years old) consisted of 29 recipients. Reviewed data included age, sex, cause of liver disease, presence of hepatocellular carcinoma, Child-Pugh and Model for End-Stage Liver Disease scores, survival, and posttransplant complications. RESULTS: In both groups, most patients (n = 108) required liver transplant for hepatitis B virus. Mean age was 40 ± 12.3 and 63 ± 2.3 years in groups 1 and 2, respectively, with more men than women in both group 1 (71.7% vs 28.3%) and group 2 (75.9% vs 24.1%). No significant differences were shown between groups for patient characteristics, except group 1 had significantly higher Model for End-Stage Liver Disease score. Group 1 mean survival time was 10.2 ± 0.6 years, with patient survival rates at 1, 5, 10, and 15 years of 65.5%, 53%, 46.3%, and 40%, respectively. In group 2, respective results were 10.6 ± 1.3 years and 75.9%, 68.6%, 61%, and 48.8% (no significant difference vs group 1). CONCLUSIONS: Liver transplant recipients >60 years of age had survival rates, acute rejection rates, and complications similar to younger recipients. Liver transplant should not be withheld from older recipients on the basis of age alone. However, comprehensive screening for comorbidities should be performed.


Asunto(s)
Carcinoma Hepatocelular , Enfermedad Hepática en Estado Terminal , Neoplasias Hepáticas , Trasplante de Hígado , Adulto , Anciano , Enfermedad Hepática en Estado Terminal/diagnóstico , Enfermedad Hepática en Estado Terminal/etiología , Enfermedad Hepática en Estado Terminal/cirugía , Femenino , Supervivencia de Injerto , Humanos , Trasplante de Hígado/efectos adversos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Riesgo , Índice de Severidad de la Enfermedad , Factores de Tiempo , Resultado del Tratamiento
6.
Trop Doct ; 51(4): 573-577, 2021 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-34334007

RESUMEN

Rectocoele and faecal incontinence coexist in most patients. We determined an excellent one-year outcome of simultaneous repair of the former and correction of the latter can be achieved.


Asunto(s)
Incontinencia Fecal , Rectocele , Canal Anal/cirugía , Incontinencia Fecal/etiología , Humanos , Resultado del Tratamiento
7.
Exp Clin Transplant ; 18(5): 564-571, 2020 10.
Artículo en Inglés | MEDLINE | ID: mdl-33143601

RESUMEN

OBJECTIVES: With the declaration of COVID-19 as a pandemic, many studies have indicated that elective surgeries should be postponed. However, postponement of transplants may cause diseases to get worse and increase the number in wait lists. We believe that, with precautions, transplant does not pose a risk during pandemic. Here, we aimed to evaluate our transplant results, which we safely performed during a 6-month pandemic period. MATERIALS AND METHODS: Until September 2020, 3140 kidney and 667 liver transplants have been performed in our centers. We evaluated 38 kidney transplants and 9 liver transplants procedures performed during the pandemic (March 1 to September 2, 2020). Recipient and donor candidates were screened for COVID-19 with polymerase chain reaction and thoracic computed tomography. All recipients had routine immunosuppressive protocol. During hospitalization at our COVID-19-free transplant facility, we restricted the interactions during multidisciplinary rounds. RESULTS: During the pandemic, 38 kidney transplants with an average length of hospital stay of 8.1 days were performed. Mean serum creatinine values of recipients were 0.91, 0.86, and 0.74 mg/dL on postoperative days 7, 30, and 90, respectively. During the pandemic, 9 living donor liver transplants (1 adult, 8 pediatric) were performed with an average length of hospital stay of 17.1 days. Mean serum total bilirubin levels were 0.9, 0.5, and 0.4 mg/dL on postoperative days 7, 30, and 90, respectively. Mean serum aspartate aminotransferase levels were 38.1, 28.3, and 22.3 U/L on postoperative days 7, 30, and 90, respectively. All recipients and donors were successfully discharged. Only 1 liver recipient died (on day 55 after discharge as a result of oxalosis-induced heart failure). CONCLUSIONS: According to our results, when precautions are taken, transplant does not pose a risk to patients during the pandemic period. We attribute the safety and success shown to our newly developed protocol in response to the COVID-19 pandemic.


Asunto(s)
Infecciones por Coronavirus , Atención a la Salud/tendencias , Trasplante de Riñón/tendencias , Trasplante de Hígado/tendencias , Evaluación de Procesos y Resultados en Atención de Salud/tendencias , Pandemias , Neumonía Viral , Adolescente , Adulto , COVID-19 , Niño , Preescolar , Femenino , Humanos , Huésped Inmunocomprometido , Inmunosupresores/administración & dosificación , Trasplante de Riñón/efectos adversos , Trasplante de Hígado/efectos adversos , Masculino , Persona de Mediana Edad , Seguridad del Paciente , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento , Turquía , Listas de Espera , Adulto Joven
8.
Exp Clin Transplant ; 17(6): 759-767, 2019 12.
Artículo en Inglés | MEDLINE | ID: mdl-28128721

RESUMEN

OBJECTIVES: Our aim was to evaluate the influence of the localization of right posterior bile duct anatomy relative to portal vein of the donors on posttransplant bile duct complications. MATERIALS AND METHODS: We retrospectively investigated 141 patients who had undergone living donor liver transplant using right hemiliver grafts. The patients were classified based on the pattern of the right posterior bile duct and divided into infraportal and supraportal types. Clinical donor and recipient risk factors and surgical outcomes were compared for their relationship with biliary complications using logistic regression analyses. RESULTS: The 2 groups were similar according to demographic and clinical features. The biliary complication rate was 23.7% (9/38) in the infraportal group and 47.4% (37/78) in the supraportal group (P = .014). An analysis of risk factors for the development of anastomotic bile leak using logistic regression showed that a supraportal right posterior bile duct anatomy was a statistically significant positive predictor, with odds ratio of 18.905 (P = .012; confidence interval, 1.922-185.967). The distance of the right posterior bile duct from confluence was significantly lower in patients with biliary complications than in those without (mean of 7.66 vs 0.40 mm; P = .044). According to receiver operating characteristic analyses, the cut-off point for the length of right bile duct to right posterior bile duct from the hepatic confluence was 9.5 mm regarding presence of complications. CONCLUSIONS: Factors influencing bile duct anastomosis leakage were supraportal-type donor bile duct anatomy and length of the right main bile duct from biliary confluence. Hepatic arterial complications were similarly a risk factor for biliary strictures. Because of the multiple factors leading to complications in living donor liver transplant, it is challenging to group these patients by operative risk; however, establishing risk models may facilitate the prediction of complications.


Asunto(s)
Conductos Biliares/trasplante , Trasplante de Hígado , Donadores Vivos , Vena Porta/trasplante , Fuga Anastomótica/etiología , Enfermedades de los Conductos Biliares/etiología , Conductos Biliares/anomalías , Conductos Biliares/diagnóstico por imagen , Colangiografía , Pancreatocolangiografía por Resonancia Magnética , Humanos , Trasplante de Hígado/efectos adversos , Vena Porta/diagnóstico por imagen , Estudios Retrospectivos , Medición de Riesgo , Factores de Riesgo , Resultado del Tratamiento
9.
Ann Ital Chir ; 89: 448-454, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-30569904

RESUMEN

AIM: The purpose of this study was to compare cosmetic, along with surgical, results between single incision laparoscopic appendectomy (SILA) and conventional laparoscopic appendectomy (CLA), particularly from patients' points of view. MATERIALS AND METHODS: All of the patients who underwent surgery for suspected acute appendicitis and were eligible for laparoscopic surgery were evaluated prospectively in our center between June 2013 and January 2015. Patients were underwent CLA or SILA were compared for operative results and cosmetic outcomes by Body Image Questionnaire. Nonparametric tests were used in the intergroup comparisons of quantitative data. Chi-square test was used in the comparison of qualitative data. RESULTS: A total of consecutive 166 patients were underwent SILA (55) or CLA (111) were included to the study. There was no conversion to another procedure. DURATION: of operation was significantly longer in SILA group (36.69±12.79 vs. 42.64±15.15; p= 0.009). There were no significant differences in length of stay, complications. SILA patients had more postoperative pain at first day after operation (p=0.002). After 12 months, body image and cosmetic appearance were excellent for both groups and indistinguishable by most measures (55.79±2.31 vs. 55,76±2,13; p= 0,937). CONCLUSIONS: SILA resulted in more pain and longer operative times without improving short-term recovery or complications. Long-term body image and cosmetic appearance were similar and excellent in both groups. KEY WORDS: Acute appendicitis, Cosmesis, Emergency surgery Minimally invasive.


Asunto(s)
Apendicectomía/métodos , Apendicitis/cirugía , Laparoscopía , Adulto , Imagen Corporal , Estudios de Cohortes , Estética , Femenino , Humanos , Masculino , Satisfacción del Paciente , Estudios Prospectivos , Autoinforme , Factores de Tiempo , Resultado del Tratamiento
10.
Prog Transplant ; 28(4): 349-353, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30235978

RESUMEN

INTRODUCTION: Renal transplantation is the most effective and preferred definite treatment option in patients with end-stage renal disease. Due to long-term immunesuppressive treatment, renal transplant recipients become vulnerable to opportunistic infections, especially to fungal infections. METHOD: This was a single-center, retrospective observational study of 438 patients who underwent renal transplantation between 2010 and 2016. RESULTS: Thirty-eight renal transplant recipients who had lower respiratory tract infection with median age of 41.5 years were evaluated for invasive pulmonary aspergillus (IPA). Of these, 52.6% were female and 84.2% had living donors. Eleven of 38 lower respiratory patients were found to have IPA infection, 5 with proven infection. Compared to patients who did not have fungal pulmonary infection, patients with invasive aspergillus were older and had high fever, galactomannan levels, and leukocyte counts. Mortality was also higher in those patients. Having fever at the baseline and IPA infection was significantly associated with mortality in univariate analysis and remained related in multivariate model after adjustment for age, gender, and fever. CONCLUSION: Invasive pulmonary aspergillus infection is highly associated with increased mortality rates in renal transplant patients. Fungal pulmonary infections in immune-suppressed patients should be diagnosed and treated immediately in order to avoid the life-threatening complications and may greatly improve prognosis.


Asunto(s)
Antifúngicos/uso terapéutico , Aspergilosis/tratamiento farmacológico , Fallo Renal Crónico/cirugía , Trasplante de Riñón/efectos adversos , Trasplante de Riñón/mortalidad , Infecciones Oportunistas/tratamiento farmacológico , Infecciones del Sistema Respiratorio/tratamiento farmacológico , Adulto , Aspergilosis/etiología , Aspergilosis/mortalidad , Femenino , Humanos , Masculino , Persona de Mediana Edad , Infecciones Oportunistas/etiología , Infecciones Oportunistas/mortalidad , Infecciones del Sistema Respiratorio/etiología , Infecciones del Sistema Respiratorio/mortalidad , Estudios Retrospectivos
11.
Exp Clin Transplant ; 16(3): 266-273, 2018 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-27356006

RESUMEN

OBJECTIVES: Donor kidney measurements may affect outcomes of transplanted allografts. We tested allograft and recipient measurements on kidney allograft outcomes. In this study, we compared the effects of kidney allograft volumes, which were measured using computed tomographic angiography before transplant, and allograft weight, which was measured during surgery, in relation to the recipient's body weight and body mass index on kidney function at 6 and 12 months after transplant. MATERIAL AND METHODS: We included 74 patients (40 female and 34 male patients, mean age of 50.42 ± 9.75 y) in this study. RESULTS: Intraoperative allograft weight was 182.68 ± 40.33 g (range, 104-266 g). The allograft volume measured using computed tomographic angiography scanning was 123.34 ± 24.26 mL (range, 78-181 mL). The estimated glomerular filtration rates of the recipients at 6 and 12 months after transplant correlated negatively with age and recipient body mass index but correlated positively with allograft volume/recipient body weight, allograft volume/recipient body mass index, allograft weight, allograft weight/recipient body weight, and allograft weight/recipient body mass index values, as concluded by univariate analyses. From multivariate analyses, we found variables of interest presumed to significantly affect the 12-month estimated glomerular filtration rates, including recipient age, allograft volume/recipient body weight, allograft volume/recipient body mass index, allograft weight, allograft weight/recipient body weight, and allograft weight/recipient body mass index. CONCLUSIONS: Transplanted allograft and recipient body values may be used as predictors of estimated glomerular filtration rates 6 and 12 months after transplant.


Asunto(s)
Índice de Masa Corporal , Tasa de Filtración Glomerular , Trasplante de Riñón/métodos , Riñón , Donadores Vivos , Adulto , Factores de Edad , Aloinjertos , Angiografía por Tomografía Computarizada , Femenino , Humanos , Riñón/diagnóstico por imagen , Riñón/fisiopatología , Riñón/cirugía , Trasplante de Riñón/efectos adversos , Modelos Lineales , Masculino , Persona de Mediana Edad , Análisis Multivariante , Tamaño de los Órganos , Valor Predictivo de las Pruebas , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento
12.
Sisli Etfal Hastan Tip Bul ; 52(4): 285-288, 2018.
Artículo en Inglés | MEDLINE | ID: mdl-32774092

RESUMEN

OBJECTIVES: The necessity of comparing oncologic results with the use of minimally invasive surgery in rectal cancer has arisen. The aim of the present study was to evaluate the treatment approach in rectal cancer and to compare the outcomes of laparoscopic and open surgery. METHODS: Patients who underwent surgery for rectal carcinoma between January 2006 and January 2016 in our institution were evaluated. The results were compared between the two groups according to open or laparoscopic surgery. Clinical characteristics, preoperative and postoperative results, pathological examination results, and disease-free survival rates were compared after the surgical procedure. RESULTS: A total of 121 patients were included in the study. Of the patients, 50 underwent open, and 71 underwent laparoscopic surgery. The median follow-up times were 56.75 months in the open surgery group and 55.2 months in the laparoscopic surgery group. Pathological examination revealed similar numbers of lymph nodes in both groups (p>0.05). The duration of hospital stay was statistically significantly lower in the open surgery group than in the laparoscopic group (p<0.05). The rates of disease-free survival were 74% in the open surgery group and 82.5% in the laparoscopic group, and no statistically significant difference was found (p>0.05). CONCLUSION: There was no significant difference in complication and recurrence between laparoscopic and open surgery for rectal cancer in our study. The duration of hospital stay of patients was statistically significantly lower in the laparoscopic group than in the open surgery group. Laparoscopic or open surgical options could be preferred according to the clinical suitability of the patient, experience of the surgeon, and resources of the center in rectal cancer treatment.

13.
Exp Clin Transplant ; 2017 Oct 31.
Artículo en Inglés | MEDLINE | ID: mdl-29108513

RESUMEN

Traumatic external iliac artery dissection after renal transplant is a rare complication, but it should be urgently managed due to its devastating effects on graft and lower limb circulation. External iliac artery dissection is seen more in recipients with diabetes mellitus and comorbid disease. Recipients with external iliac artery dissection should be treated immediately by percutaneus angioplasty or surgical reconstruction. In this study, we reported the management of 2 kidney transplant cases with external iliac artery dissection due to vascular clamping of the artery. External iliac artery dissection was diagnosed by ultrasonography in both cases. After failed percutaneous interventional angioplasty, we reconstructed the external iliac artery dissection surgically and replaced the external iliac artery with polytetra-fluoroethylene grafts in both patients. Both patients were discharged with normal functioning grafts showing 0.9 and 0.8 mg/dL serum creatinine levels at month 3 posttransplant. Close monitoring of recipients after transplant is mandatory for early diagnosis and early management of external iliac artery dissection to prevent graft loss and preserve lower limb circulation. Routine Doppler ultrasonography is an inexpensive and useful tool for early diagnosis in cases of sudden cessation or decrease in urine. In cases of failed percutaneous interventional angioplasty, reconstruction with synthetic vascular grafts can be safely applied in external iliac artery dissection.

14.
Exp Clin Transplant ; 2017 Mar 22.
Artículo en Inglés | MEDLINE | ID: mdl-28332960

RESUMEN

OBJECTIVES: The aim of this study was to evaluate the feasibility of diffusion-weighted magnetic resonance, by comparing imaging in renal allograft recipients for functional assessment of kidney transplants versus imaging of these features in healthy volunteers and kidney donors with native kidneys. MATERIALS AND METHODS: Seventy renal transplant recipients (group A) with stable graft function at postoperative month 1, 40 healthy volunteers (group B), and 40 kidney donors (group C) underwent diffusion-weighted magnetic resonance imaging. An echo-planar diffusion-weighted imaging sequence was performed in coronal orientation by using 6 b values (0, 200, 400, 600, 800, 1000 s/mm²). The apparent diffusion coefficients were determined for the upper and lower poles of the kidney cortex and medulla. Relations between apparent diffusion coefficients and allograft function, determined by the estimated glomerular filtration rate (comparing rates > 60 mL/min/1.73 m² [group A1] versus < 60 mL/min/1.73 m² [group A2]), were investigated in renal transplant recipients, and apparent diffusion coefficients in groups A, B, and C were compared. RESULTS: Apparent diffusion coefficients were statistically higher in group A1 than in group A2 (P < .05) and statistically higher in group A than in groups B and C (P < .001). There were no significant differences between groups B and C (P > .05). CONCLUSIONS: We observed that apparent diffusion coefficients of transplanted kidneys at postoperative month 1 were higher than values in native kidneys of healthy volunteers and kidney donors. In addition, apparent diffusion coefficients of transplanted kidneys with estimated glomerular filtration rates > 60 mL/min/1.73 m² were higher than transplanted kidneys with rates < 60 mL/min/1.73 m².

15.
Exp Clin Transplant ; 14(6): 587-595, 2016 Dec.
Artículo en Inglés | MEDLINE | ID: mdl-27934557

RESUMEN

Since the first successful organ transplant conducted between twins in 1954, kidney transplant has evolved considerably over the past 50 years. Kidney transplant plays an important role in the treatment of end-stage kidney disease to improve the quality of life and prolong the life of patients. Despite significant advances, postoperative medical and surgical complications still represent important causes of morbidity and mortality. Many problems can be avoided through prophylactic correction of abnormalities detected during the preoperative evaluation; however, it is critical that technical mishaps at all stages of the transplant process (donor nephrectomy, benchwork preparation, and implant) be prevented and that careful postoperative monitoring be carried out, including thorough examination by attending physicians. However, despite these advances, surgical complications still present serious problems in kidney transplant recipients.


Asunto(s)
Complicaciones Intraoperatorias , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/cirugía , Trasplante de Riñón/efectos adversos , Complicaciones Posoperatorias , Humanos , Fallo Renal Crónico/mortalidad , Trasplante de Riñón/enfermería , Nefrectomía , Enfermería Perioperatoria , Periodo Preoperatorio
16.
J Gastrointest Surg ; 20(5): 994-1001, 2016 05.
Artículo en Inglés | MEDLINE | ID: mdl-26628070

RESUMEN

PURPOSE: The purpose of this study was to evaluate the outcomes of patients who underwent colorectal resections and coloanal anastomosis for radiation-induced recto-vaginal fistulas (RVFs). The effect of the surgical treatment technique on bowel function, fecal continence, and quality of life of patients was also evaluated. METHODS: Twenty-one female patients, who received adjuvant chemotherapy and external beam pelvic radiation for cervix carcinoma after radical hysterectomy + pelvic/paraaortic lymph node dissection, having RVF but without tumor recurrence, were included. All patients underwent an ultralow anterior resection (n = 11) or an abdominoperineal pull-through resection and straight coloanal anastomosis (n = 10). A bowel functions questionnaire and a Fecal Incontinence Quality of Life (FIQLI) questionnaire were applied to patients pre-operatively and also 6 months after the ileostomy closure procedures. RESULTS: No recurrent RVF was observed in a mean follow-up period of 20 months after ostomy reversal procedures. The FIQLI depression, lifestyle, and embarrassment scores were significantly improved on the follow-up questionnaire. The mean pre- and post-operative incontinence scores were not significantly different. CONCLUSIONS: The spontaneous closure rate after a simple diverting stoma is quite low and local repair procedures usually result in failure. In selected patients, performing a nearly total rectum resection and maintaining the intestinal continuity with a coloanal anastomosis may be accepted as a safe and curative option. Recurrence-free outcome and the improvement of the quality of life of the patients represent the efficiency of this treatment modality.


Asunto(s)
Canal Anal/cirugía , Colon/cirugía , Procedimientos Quirúrgicos del Sistema Digestivo/métodos , Procedimientos Quirúrgicos Ginecológicos/métodos , Traumatismos por Radiación/complicaciones , Fístula Rectovaginal/cirugía , Abdomen/cirugía , Adulto , Anciano , Anastomosis Quirúrgica/métodos , Femenino , Humanos , Persona de Mediana Edad , Peritoneo/cirugía , Calidad de Vida , Fístula Rectovaginal/etiología , Reoperación , Neoplasias del Cuello Uterino/tratamiento farmacológico , Neoplasias del Cuello Uterino/radioterapia , Neoplasias del Cuello Uterino/cirugía
17.
J Minim Access Surg ; 11(4): 257-62, 2015.
Artículo en Inglés | MEDLINE | ID: mdl-26622116

RESUMEN

BACKGROUND: Transanal endoscopic microsurgery is a minimally invasive technique that allows full-thickness resection and suture closure of the defect for large rectal adenomas, selected low-risk rectal cancers, or small cancers in patients who have a high risk for major surgery. Our aim, in the given prospective study was to report our initial clinical experience with TAMIS, and to evaluate its effects on postoperative anorectal functions. MATERIALS AND METHODS: In 10 patients treated with TAMIS for benign and malignant rectal tumors, preoperative and postoperative anorectal function was evaluated with anorectal manometry and Cleveland Clinic Incontinence Score. RESULTS: The mean distance of the tumors from the anal verge was 5.6 cm, and mean tumor diameter was 2.6 cm. All resection margins were tumor free. There was no difference in preoperative and 3-week postoperative anorectalmanometry findings; only mean minimum rectal sensory volume was lower at 3 weeks after surgery. The Cleveland Clinic Incontinence Score was normal in all patients except one which resolved by 6 weeks after surgery.The mean postoperative follow-up was 28 weeks without any recurrences. CONCLUSION: Transanal minimally invasive surgery is a safe and effective procedure for treatment of rectal tumors and can be performed without impairing anorectal functions.

18.
Exp Clin Transplant ; 13 Suppl 3: 74-6, 2015 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-26640918

RESUMEN

To minimize the recurrence of a previously treated neoplasm in organ recipients, a period of 2 to 5 years without recurrence is advocated for most malignancies. However, prostate cancer is different because of its biological properties, diagnosis, and treatment. Most prostate cancers are detected at a low stage and demonstrate slow growth after detection. Definitive treatment with radical prostatectomy affords excellent results. Renal transplant candidates with early-stage prostate cancer have a higher risk of dying on dialysis than dying from prostate cancer; therefore, renal transplant candidates with organ-confined prostate cancer should be immediately considered for transplant.


Asunto(s)
Adenocarcinoma/cirugía , Fallo Renal Crónico/cirugía , Trasplante de Riñón , Prostatectomía , Neoplasias de la Próstata/cirugía , Tiempo de Tratamiento , Adenocarcinoma/sangre , Adenocarcinoma/patología , Biopsia , Humanos , Inmunosupresores/uso terapéutico , Calicreínas/sangre , Fallo Renal Crónico/complicaciones , Fallo Renal Crónico/diagnóstico , Masculino , Persona de Mediana Edad , Clasificación del Tumor , Estadificación de Neoplasias , Selección de Paciente , Antígeno Prostático Específico/sangre , Neoplasias de la Próstata/sangre , Neoplasias de la Próstata/complicaciones , Neoplasias de la Próstata/patología , Medición de Riesgo , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento
19.
Exp Clin Transplant ; 13 Suppl 1: 71-4, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25894131

RESUMEN

Biliary complications are major sources of morbidity after liver transplant due to vulnerable vascularization of the bile ducts. Biliary complications are the "Achilles' heel" of liver transplant with their high incidence, need for repeated and prolonged treatment, and potential effects on graft and patient survival. Although standardization of reconstruction techniques and improvements in immunosuppression and organ preservation have reduced the incidence of biliary complications, in early reports the morbidity rates are 50%, with related mortality rate 25% to 30%. Prophylaxis is a major issue. Although many risk factors (old donor age, marginal graft, prolonged ischemia time, living-donor liver transplant, partial liver transplant, donation after cardiac death, hepatic arterial thrombosis, organ preservation, chronic rejection, and other donor and recipient characteristics) do not directly affect biliary complications, accumulation of the factors mentioned above, should be avoided. However, no accepted standard has been established. Treatment strategy is a subject of debate. Recently, nonoperative treatment of biliary complications have been preferred for diagnosis and therapy, because percutaneous or endoscopic treatment may prevent the need for surgical intervention. In this study, we reviewed our treatment of early and late biliary complications after liver transplant.


Asunto(s)
Enfermedades de las Vías Biliares/terapia , Trasplante de Hígado/efectos adversos , Enfermedades de las Vías Biliares/diagnóstico , Enfermedades de las Vías Biliares/etiología , Enfermedades de las Vías Biliares/mortalidad , Humanos , Trasplante de Hígado/mortalidad , Reoperación , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento , Turquía
20.
Exp Clin Transplant ; 13 Suppl 1: 124-6, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25894140

RESUMEN

OBJECTIVES: With the increased life span, the need for liver transplant for elderly patients also increased in the world. In this study, we reviewed our experience to determine the outcomes and problems of patients aged > 60 years who had liver transplants. MATERIALS AND METHODS: Data of recipients aged > 60 years were reviewed retrospectively. We analyzed 16 elderly patients who had liver transplant for chronic liver disease between 2001 and 2014 in our center. RESULTS: In our series, there were 5 women and 11 men between age 60 and 65 years. The mean Child-Pugh score was 7.9 ± 1.7 and Model for End-Stage Liver Disease score was 14.1 ± 5.1. Primary liver disease was hepatitis B in 9 patients (34.5%), most of them with hepatocellular carcinoma. The other causes of liver failure were hepatitis C (n = 4), alcoholic cirrhosis (n = 2), and cryptogenic cirrhosis (n = 2); 1 patient had both hepatitis B and hepatitis C virus, and 1 patient had both hepatitis B virus and alcoholic cirrhosis. There were 9 patients who had hepatocellular carcinoma. Mortality was observed in 4 patients. The reasons for mortality were sepsis (n=3) and hepatocellular carcinoma (n=1). CONCLUSIONS: Liver transplant can be safely performed and has acceptable long-term outcomes in low-risk elderly recipients. Age alone should not be a contraindication for liver transplant in elderly patients.


Asunto(s)
Fallo Hepático/cirugía , Trasplante de Hígado , Factores de Edad , Anciano , Femenino , Rechazo de Injerto/inmunología , Rechazo de Injerto/prevención & control , Supervivencia de Injerto , Humanos , Inmunosupresores/uso terapéutico , Fallo Hepático/diagnóstico , Fallo Hepático/etiología , Fallo Hepático/mortalidad , Trasplante de Hígado/efectos adversos , Trasplante de Hígado/mortalidad , Masculino , Persona de Mediana Edad , Selección de Paciente , Estudios Retrospectivos , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento , Turquía
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