Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 208
Filtrar
1.
World J Urol ; 40(3): 849-855, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35034167

RESUMO

PURPOSE: To determine the prevalence of prostatic metaplasia in an expanded cohort of transmasculine individuals undergoing gender-affirming resection of vaginal tissue. METHODS: Institutional Review Board approval was obtained. Clinical records were reviewed for all transmasculine individuals undergoing vaginal tissue resection at our institution between January 2018 and July 2021. Corresponding pathology specimens were examined grossly and microscopically, including immunohistochemical stains for NKX3.1, prostate-specific antigen (PSA), and androgen receptor (AR). Vaginal specimens from three patients without androgen supplementation were used as controls. RESULTS: Twenty-one patients met inclusion criteria. The median age at surgery was 26.4 years (range 20.6-34.5 years). All patients had been assigned female gender at birth and lacked endocrine or genetic abnormalities. All were on testosterone therapy; median duration of therapy at surgery was 4.4 years (range 1.4-12.1 years). In the transmasculine group, no gross lesions were identified. Microscopically, all specimens demonstrated patchy intraepithelial glandular proliferation along the basement membrane and/or nodular proliferation of prostate-type tissue within the subepithelial stroma. On immunohistochemical staining, performed for a subset of cases, the glandular proliferation was positive for NKX3.1 (16/16 cases; 100%), PSA (12/14 cases; 85.7%), and AR (8/8 cases; 100%). Controls showed no evidence of prostatic metaplasia. CONCLUSION: One hundred percent of vaginal specimens obtained from transmasculine individuals on testosterone therapy (21/21 cases) demonstrated prostatic metaplasia. Further investigation is warranted to characterize the natural history and clinical significance of these changes. Patients seeking hormone therapy and/or gender-affirming surgery should be counseled on the findings and their yet-undetermined significance.


Assuntos
Próstata , Pessoas Transgênero , Adulto , Androgênios/uso terapêutico , Feminino , Humanos , Recém-Nascido , Masculino , Metaplasia/induzido quimicamente , Metaplasia/tratamento farmacológico , Vagina , Adulto Jovem
2.
Pediatr Nephrol ; 37(9): 2157-2166, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35091836

RESUMO

BACKGROUND: Both the development of kidney function in healthy children and autoregulation ability of kidney function in patients with asymmetric kidneys are important in clinical diagnosis and treatment of kidney-related diseases, but there are however only limited studies. This study aimed to investigate development of kidney function in normal children with healthy symmetric kidneys and autoregulation of the healthy kidney compensating the functional loss of a diseased one in children with asymmetric kidneys. METHODS: Two hundred thirty-seven children (156 male, 81 female) from 0 to 20y (average 4.6y ± 5.1) undergoing 99mTc-MAG3 renography were included, comprising 134 with healthy symmetrically functioning kidneys and 103 with asymmetric kidneys. Clearance was calculated from kidney uptakes at 1-2 min. A developmental model between MAG3 clearance (CL) and patient age in normal group was identified (CL = 84.39Age0.395 ml/min, r = 0.957, p < 0.001). The clearance autoregulation rate in abnormal group with asymmetric kidneys was defined as the ratio of the measured MAG3 clearance and the normal value predicted from the renal developmental model of normal group. RESULTS: No significant difference of MAG3 clearance (p = 0.723) was found between independent abnormal group and normal group. The autoregulation rate of kidney clearance in abnormal group was 94.2% on average, and no significant differences were found between two age groups (p = 0.49), male and female (p = 0.39), and left kidney and right kidney (p = 0.92) but two different grades of asymmetric kidneys (p = 0.02). CONCLUSIONS: The healthy kidney of two asymmetric kidneys can automatically regulate total kidney function up to 94% of two symmetric kidneys in normal children.


Assuntos
Nefropatias , Renografia por Radioisótopo , Criança , Feminino , Homeostase , Humanos , Rim , Masculino , Compostos Radiofarmacêuticos , Estudos Retrospectivos , Tecnécio Tc 99m Mertiatida
3.
Int J Mol Sci ; 23(16)2022 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-36012410

RESUMO

For almost a century, familial hypercholesterolemia (FH) has been considered a serious disease, causing atherosclerosis, cardiovascular disease, and ischemic stroke. Closely related to this is the widespread acceptance that its cause is greatly increased low-density-lipoprotein cholesterol (LDL-C). However, numerous observations and experiments in this field are in conflict with Bradford Hill's criteria for causality. For instance, those with FH demonstrate no association between LDL-C and the degree of atherosclerosis; coronary artery calcium (CAC) shows no or an inverse association with LDL-C, and on average, the life span of those with FH is about the same as the surrounding population. Furthermore, no controlled, randomized cholesterol-lowering trial restricted to those with FH has demonstrated a positive outcome. On the other hand, a number of studies suggest that increased thrombogenic factors-either procoagulant or those that lead to high platelet reactivity-may be the primary risk factors in FH. Those individuals who die prematurely have either higher lipoprotein (a) (Lp(a)), higher factor VIII and/or higher fibrinogen compared with those with a normal lifespan, whereas their LDL-C does not differ. Conclusions: Many observational and experimental studies have demonstrated that high LDL-C cannot be the cause of premature cardiovascular mortality among people with FH. The number who die early is also much smaller than expected. Apparently, some individuals with FH may have inherited other, more important risk factors than a high LDL-C. In accordance with this, our review has shown that increased coagulation factors are the commonest cause, but there may be other ones as well.


Assuntos
Aterosclerose , Doenças Cardiovasculares , Hiperlipoproteinemia Tipo II , Fatores de Coagulação Sanguínea , LDL-Colesterol , Humanos , Hiperlipoproteinemia Tipo II/complicações , Lipoproteína(a) , Fatores de Risco
4.
Curr Opin Urol ; 31(2): 140-146, 2021 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-33394765

RESUMO

PURPOSE OF REVIEW: Botulinum neurotoxin A (BoNT/A), or Botox, is a popular option for overactive bladder (OAB) and neurogenic bladder (NGB) with or without incontinence. This review aims to discuss the clinical outcomes of BoNT in adult and pediatric bladder conditions, and introduces the potential benefit of novel, engineered neurotoxins beyond BoNT/A. RECENT FINDINGS: A large volume of evidence supports the use of Botox for OAB (to reduce urgency, frequency and incontinence episodes), and for NGB (to decrease incontinence and improve bladder capacity and detrusor pressures). Botox is now also Food & Drug Administration (FDA)-approved for pediatric neurogenic detrusor overactivity. However, urinary retention, diminished response over time and treatment failures are prevalent issues with Botox. Modifying natural BoNTs or forming chimeric toxins are alternatives to BoNT/A that may have higher efficacy and lower side-effect profile. One example is BoNT/BMY-WW. This novel engineered toxin binds to a more commonly expressed synaptotagmin receptor, with potentially more potent paralytic effect and less capacity for systemic diffusion. SUMMARY: Novel engineered neurotoxins may be the next frontier in OAB and NGB therapy.


Assuntos
Toxinas Botulínicas Tipo A , Bloqueio Nervoso , Fármacos Neuromusculares , Bexiga Urinaria Neurogênica , Bexiga Urinária Hiperativa , Adulto , Toxinas Botulínicas Tipo A/efeitos adversos , Toxinas Botulínicas Tipo A/uso terapêutico , Criança , Humanos , Bloqueio Nervoso/métodos , Fármacos Neuromusculares/efeitos adversos , Fármacos Neuromusculares/uso terapêutico , Resultado do Tratamento , Bexiga Urinaria Neurogênica/tratamento farmacológico , Bexiga Urinária Hiperativa/tratamento farmacológico
5.
J Pediatr Psychol ; 46(5): 588-598, 2021 06 03.
Artigo em Inglês | MEDLINE | ID: mdl-33594414

RESUMO

OBJECTIVE: This study identifies trajectories of parent depressive symptoms after having a child born with genital atypia due to a disorder/difference of sex development (DSD) or congenital adrenal hyperplasia (CAH) and across the first year postgenitoplasty (for parents who opted for surgery) or postbaseline (for parents who elected against surgery for their child). Hypotheses for four trajectory classes were guided by parent distress patterns previously identified among other medical conditions. METHODS: Participants included 70 mothers and 50 fathers of 71 children diagnosed with a DSD or CAH with reported moderate to high genital atypia. Parents were recruited from 11 US DSD specialty clinics within 2 years of the child's birth and prior to genitoplasty. A growth mixture model (GMM) was conducted to identify classes of parent depressive symptoms over time. RESULTS: The best fitting model was a five-class linear GMM with freely estimated intercept variance. The classes identified were termed "Resilient," "Recovery," "Chronic," "Escalating," and "Elevated Partial Recovery." Four classes have previously been identified for other pediatric illnesses; however, a fifth class was also identified. The majority of parents were classified in the "Resilient" class (67.6%). CONCLUSIONS: This study provides new knowledge about the trajectories of depressive symptoms for parents of children with DSD. Future studies are needed to identify developmental, medical, or familial predictors of these trajectories.


Assuntos
Hiperplasia Suprarrenal Congênita , Pais , Criança , Genitália , Humanos
6.
J Pediatr Psychol ; 45(9): 1053-1062, 2020 10 01.
Artigo em Inglês | MEDLINE | ID: mdl-32929478

RESUMO

OBJECTIVE: A subset of parents of children with disorders/differences of sex development (DSD) including ambiguous genitalia experience clinically elevated levels of anxious and depressive symptoms. Research indicates that uncertainty about their child's DSD is associated with parent psychosocial distress; however, previous studies have been cross-sectional or correlational in nature. The current study is the first to examine the longitudinal trajectory of the relationship between caregiver-perceived uncertainty about their child's DSD and caregiver anxious and depressive symptoms across the first 12 months following genital surgery in young children, or if surgery was not performed, the first 12 months following study entry. METHODS: One hundred and thirteen caregivers (Mage = 32.12; 57.5% mothers; 72.6% Caucasian) of children (N = 70; Mage = 9.81 months; 65.7% female) with DSD were recruited from 12 DSD specialty clinics in the United States. Caregivers completed psychosocial measures at baseline, 6 and 12 months following genitoplasty, or study entry if parents elected not to have surgery for their child. RESULTS: Caregiver illness uncertainty and both anxious and depressive symptoms were highest at baseline and decreased over time (ps < .05). Caregiver illness uncertainty predicted symptoms of anxious and depressive symptoms across all time points (ps < .05). CONCLUSIONS: Caregivers' perceptions of uncertainty about their child's DSD are highest soon after diagnosis, and uncertainty continues to predict both anxious and depressive symptoms across time. Thus, the initial diagnostic period is a critical time for psychological assessment and intervention, with parent illness uncertainty being an important clinical target.


Assuntos
Cuidadores , Pais , Ansiedade/diagnóstico , Criança , Pré-Escolar , Estudos Transversais , Depressão/diagnóstico , Feminino , Humanos , Masculino , Incerteza
7.
J Urol ; 202(5): 1046-1051, 2019 11.
Artigo em Inglês | MEDLINE | ID: mdl-31268850

RESUMO

PURPOSE: We evaluated demographic, financial and support predictors of distress for parents of young children with disorders of sex development including atypical genital development, and characterized early parental experiences. This work extends our previous findings to identify those parents at risk for distress. MATERIALS AND METHODS: Participants included mothers (76) and fathers (63) of a child (78) diagnosed with disorders of sex development characterized by moderate to severe genital atypia. Parents completed a demographic questionnaire, measures of anxious and depressive symptoms, quality of life, illness uncertainty and posttraumatic stress symptoms, and rated their satisfaction with the appearance of their child's genitalia. RESULTS: Depressive and posttraumatic stress symptoms of caregivers were comparable to standardized norms while levels of anxious symptoms were below norms. A subset of parents reported clinically elevated symptoms. Overall 26% of parents reported anxious symptoms, 24% reported depressive symptoms and 17% reported posttraumatic stress symptoms. Levels of illness uncertainty were lower than those of parents of children with other chronic illnesses. Differences by parent sex emerged, with mothers reporting greater distress. Lower income, increased medical care and travel expenses, and having no other children were related to increased psychosocial distress. CONCLUSIONS: Early psychosocial screening is recommended for parents of children with disorders of sex development. Clinicians should be aware that financial burden and lack of previous parenting experience are risk factors for distress.


Assuntos
Transtornos do Desenvolvimento Sexual/psicologia , Pais/psicologia , Qualidade de Vida , Estresse Psicológico/etiologia , Adulto , Pré-Escolar , Transtornos do Desenvolvimento Sexual/complicações , Feminino , Humanos , Incidência , Lactente , Masculino , Prognóstico , Fatores de Risco , Estresse Psicológico/epidemiologia , Estresse Psicológico/psicologia , Estados Unidos/epidemiologia
8.
Arch Sex Behav ; 48(5): 1617-1624, 2019 07.
Artigo em Inglês | MEDLINE | ID: mdl-31144217

RESUMO

Parents of children with disorders of sex development (DSD) report significant psychological distress, including posttraumatic stress symptoms (PTSS), with mothers consistently reporting higher rates of psychological distress than fathers. However, psychological factors contributing to PTSS in both parents are not well understood. The present study sought to fill this gap in knowledge by examining PTSS and illness uncertainty, a known predictor of psychological distress, in parents of children recently diagnosed with DSD. Participants were 52 mothers (Mage = 32.55 years, SD = 5.08) and 41 fathers (Mage = 35.53 years, SD = 6.78) of 53 infants (Mage = 9.09 months, SD = 6.19) with DSD and associated atypical genital development. Participants were recruited as part of a larger, multisite study assessing parents' psychosocial response to their child's diagnosis of DSD. Parents completed measures of illness uncertainty and PTSS. Mothers reported significantly greater levels of PTSS, but not illness uncertainty, than fathers, and were more likely than fathers to report clinical levels of PTSS (21.2% compared to 7.3%). Hierarchical regression revealed that parent sex, undiagnosed or unclassified DSD status, and illness uncertainty were each associated with PTSS. The overall model accounted for 23.5% of the variance associated with PTSS. Interventions targeting illness uncertainty may be beneficial for parents of children with newly diagnosed DSD.


Assuntos
Transtornos do Desenvolvimento Sexual/psicologia , Transtornos de Estresse Pós-Traumáticos/diagnóstico , Incerteza , Adulto , Feminino , Humanos , Lactente , Masculino , Relações Pais-Filho
9.
Endocr Pract ; 25(8): 779-786, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31013155

RESUMO

Objective: The purpose of this study was to assess clinical practice patterns with regard to diagnosis and management of testicular regression syndrome (TRS), a condition in 46,XY males with male phenotypic genitalia and bilateral absence of testes. Methods: A retrospective review was conducted at two large pediatric academic centers to examine diagnostic and management approaches for TRS. Results: Records of 57 patients were reviewed. Diagnostic methods varied widely between patients and included hormonal testing, karyotype, imaging, and surgical exploration, with multiple diagnostic methods frequently used in each patient. Of the 30 subjects that had reached adolescence at the time of the study, 17 (57%) had gaps in care of more than 5 years during childhood. Thirty subjects had received testosterone replacement therapy at a mean age of 12.1 ± 1.0 years. Forty-seven percent had a documented discussion of infertility. Eighty-two percent discussed prosthesis placement, with 35% having prostheses placed. Twenty-three percent were seen by a psychosocial provider. The between-site differences were age at fertility discussion, age at and number of prostheses placed, and type/age of testosterone initiation. Conclusion: Our findings highlight the wide variation in diagnostic approaches, follow-up frequency, testosterone initiation, fertility counseling, and psychosocial support for patients with TRS. Developing evidence-based guidelines for the evaluation and management of TRS would help reduce inconsistencies in care and unnecessary testing. Ongoing follow-up and coordination of care, even during the years when no hormonal treatment is being administered, could lead to opportunities for psychosocial support and improved interdisciplinary approach to care. Abbreviations: AMH = antimüllerian hormone; CAH = congenital adrenal hyperplasia; DSD = differences/disorders of sex development; hCG = human chorionic gonadotropin; TRS = testicular regression syndrome.


Assuntos
Hiperplasia Suprarrenal Congênita , Disgenesia Gonadal 46 XY , Testículo/anormalidades , Adolescente , Criança , Humanos , Masculino , Estudos Retrospectivos
10.
Lancet ; 390(10099): 1061-1071, 2017 Sep 09.
Artigo em Inglês | MEDLINE | ID: mdl-28901936

RESUMO

Paediatric urological surgery is often required for managing congenital and acquired disorders of the genitourinary system. In this Series paper, we highlight advances in the surgical management of six paediatric urological disorders. The management of vesicoureteral reflux is evolving, with advocacy ranging from a less interventional assessment and antimicrobial prophylaxis to surgery including endoscopic injection of a bulking agent and minimally invasive ureteric reimplantation. Evidence supports early orchidopexy to improve fertility and reduce malignancy in boys with undescended testes. A variety of surgical techniques have been developed for hypospadias, with excellent outcomes for distal but not proximal hypospadias. Pelvi-ureteric junction obstruction is mostly detected prenatally; indications for surgery have been refined with evidence, and minimally invasive pyeloplasty is now standard. The outlook for patients with neurogenic bladder has been transformed by a combination of clean intermittent catheterisation, algorithms of diagnostic investigations, and innovative medical and surgical therapies. Posterior urethral valves are associated with considerable mortality; fetal diagnosis allows stratification of candidates for intervention, but ongoing bladder dysfunction in patients after valve ablation remains a cause of long-term morbidity.


Assuntos
Procedimentos Cirúrgicos Minimamente Invasivos/métodos , Orquidopexia , Bexiga Urinaria Neurogênica/cirurgia , Anormalidades Urogenitais/cirurgia , Refluxo Vesicoureteral/cirurgia , Criança , Endoscopia , Humanos , Pelve Renal/cirurgia , Nefrotomia , Diagnóstico Pré-Natal
11.
J Urol ; 209(3): 609-610, 2023 03.
Artigo em Inglês | MEDLINE | ID: mdl-36573882
12.
BMC Anesthesiol ; 18(1): 85, 2018 07 18.
Artigo em Inglês | MEDLINE | ID: mdl-30021521

RESUMO

BACKGROUND: Ketogenic diet (KD) and exogenous ketone supplements can evoke sustained ketosis, which may modulate sleep and sleep-like effects. However, no studies have been published examining the effect of ketosis on the onset of general isoflurane induced anesthesia. Therefore, we investigated the effect of the KD and different exogenous ketogenic supplements on the onset of akinesia induced by inhalation of isoflurane. METHODS: We used a high fat, medium protein and low carbohydrate diet (KD) chronically (10 weeks) in the glucose transporter 1 (GLUT1) deficiency (G1D) syndrome mice model and sub-chronically (7 days) in Sprague-Dawley (SPD) rats. To investigate the effect of exogenous ketone supplements on anesthetic induction we also provided either 1) a standard rodent chow diet (SD) mixed with 20% ketone salt supplement (KS), or 2) SD mixed with 20% ketone ester supplement (KE; 1,3 butanediol-acetoacetate diester) to G1D mice for 10 weeks. Additionally, SPD rats and Wistar Albino Glaxo Rijswijk (WAG/Rij) rats were fed the SD, which was supplemented by oral gavage of KS or KE for 7 days (SPD rats: 5 g/kg body weight/day; WAG/Rij rats: 2.5 g/kg body weight/day). After these treatments (10 weeks for the mice, and 7 days for the rats) isoflurane (3%) was administered in an anesthesia chamber, and the time until anesthetic induction (time to immobility) was measured. Blood ketone levels were measured after anesthetic induction and correlation was calculated for blood beta-hydroxybutyrate (ßHB) and anesthesia latency. RESULTS: Both KD and exogenous ketone supplementation increased blood ketone levels and delayed the onset of isoflurane-induced immobility in all investigated rodent models, showing positive correlation between the two measurements. These results demonstrate that elevated blood ketone levels by either KD or exogenous ketones delayed the onset of isoflurane-induced anesthesia in these animal models. CONCLUSIONS: These findings suggest that ketone levels might affect surgical anesthetic needs, or could potentially decrease or delay effects of other narcotic gases.


Assuntos
Anestesia/estatística & dados numéricos , Interações Alimento-Droga , Isoflurano/farmacologia , Cetose/induzido quimicamente , Ácido 3-Hidroxibutírico/sangue , Administração por Inalação , Animais , Dieta Cetogênica/efeitos adversos , Transportador de Glucose Tipo 1/deficiência , Isoflurano/administração & dosagem , Cetonas/sangue , Cetonas/farmacologia , Cetose/sangue , Masculino , Camundongos , Ratos , Especificidade da Espécie , Fatores de Tempo
13.
Learn Mem ; 23(6): 270-7, 2016 06.
Artigo em Inglês | MEDLINE | ID: mdl-27194794

RESUMO

Developed as a tool to assess working memory capacity in rodents, the odor span task (OST) has significant potential to advance drug discovery in animal models of psychiatric disorders. Prior investigations indicate OST performance is impaired by systemic administration of N-methyl-d-aspartate receptor (NMDA-r) antagonists and is sensitive to cholinergic manipulations. The present study sought to determine whether an impairment in OST performance can be produced by systemic administration of the competitive NMDA-r antagonist 3-(2-carboxypiperazin-4-yl)propyl-1-phosphonic acid (CPP; 3, 10, 17 mg/kg i.p.) in a unique dual-component variant of the OST, and whether this impairment is ameliorated by nicotine (0.75 mg/kg i.p.). Male Sprague-Dawley rats were trained to asymptotic level of performance on a 24-trial two-comparison incrementing nonmatching to sample OST. In addition, rats were administered a two-comparison olfactory reference memory (RM) task, which was integrated into the OST. The RM task provided an assessment of the effects of drug administration on global behavioral measures, long-term memory and motivation. Several measures of working memory (span, longest run, and accuracy) were dose dependently impaired by CPP without adversely affecting RM. Analysis of drug effects across trial blocks demonstrated a significant impairment of performance even at low memory loads, suggesting a CPP-induced deficit of olfactory short-term memory that is not load-dependent. Although nicotine did not ameliorate CPP-induced impairments in span or accuracy, it did block the impairment in longest run produced by the 10 mg/kg dose of CPP. Overall, our results indicate that performance in our 24 odor two-comparison OST is capacity dependent and that CPP impaired OST working, but not reference, memory.


Assuntos
Memória de Curto Prazo/efeitos dos fármacos , Nicotina/administração & dosagem , Agonistas Nicotínicos/administração & dosagem , Piperazinas/administração & dosagem , Receptores de N-Metil-D-Aspartato/antagonistas & inibidores , Animais , Relação Dose-Resposta a Droga , Antagonistas de Aminoácidos Excitatórios/administração & dosagem , Masculino , Motivação/efeitos dos fármacos , Odorantes , Percepção Olfatória/efeitos dos fármacos , Ratos Sprague-Dawley , Receptores de N-Metil-D-Aspartato/fisiologia , Receptores Nicotínicos
14.
J Neurosci Res ; 94(6): 437-44, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26511328

RESUMO

Our motivation in writing this Review arose not only from the great value in contributing to this special issue of the Journal of Neuroscience Research but also from the desire to express our opinion that the description of the amygdala as "dysfunctional" in posttraumatic stress disorder (PTSD) might not be appropriate. We acknowledge that excessive activation of the amygdala contributes to the cluster of PTSD symptoms, including hypervigilance, intrusive memories, and impaired sleep, that underlies the devastating mental and physical outcomes in trauma victims. The issue that we address is whether the symptoms of PTSD represent an impaired (dysfunctional) or sensitized (hyperfunctional) amygdala status. We propose that the amygdala in PTSD is hyperfunctional rather than dysfunctional in recognition of the fact that the individual has already survived one life-threatening attack and that another may be forthcoming. We therefore consider PTSD to be a state in which the amygdala is functioning optimally if the goal is to ensure a person's survival. The misery caused by a hyperfunctional amygdala in PTSD is the cost of inheriting an evolutionarily primitive mechanism that considers survival more important than the quality of one's life.


Assuntos
Tonsila do Cerebelo/patologia , Tonsila do Cerebelo/fisiopatologia , Transtornos de Estresse Pós-Traumáticos/patologia , Animais , China , Humanos , Transtornos de Estresse Pós-Traumáticos/fisiopatologia
15.
J Urol ; 204(6): 1346-1347, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-32993447
16.
J Urol ; 204(5): 1060, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32779994
17.
J Urol ; 194(4): 1080-5, 2015 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-25963188

RESUMO

PURPOSE: We describe our experience with 2-stage proximal hypospadias repair. We report outcomes, and patient and procedure characteristics associated with surgical complications. MATERIALS AND METHODS: We retrospectively studied patients with proximal hypospadias who underwent staged repair between January 1993 and December 2012. Demographics, preoperative management and operative technique were reviewed. Complications included glans dehiscence, fistula, meatal stenosis, nonmeatal stricture, urethrocele/diverticula and residual chordee. Cox proportional hazards model was used to evaluate the associations between time to surgery for complications and patient and procedure level factors. RESULTS: A total of 134 patients were included. Median patient age was 8.8 months at first stage surgery and 17.1 months at second stage surgery, and median time between surgeries was 8 months. Median followup was 3.8 years. Complications were seen in 71 patients (53%), with the most common being fistula (39 patients, 29.1%). Reoperation was performed in 66 patients (49%). Median time from urethroplasty to surgery for complication was 14.9 months. Use of preoperative testosterone decreased risk of undergoing surgery for complication by 27% (HR 0.73, 95% CI 0.55-0.98, p = 0.04). In addition, patients identified as Hispanic were at increased risk for undergoing surgery for complications (HR 2.40, 95% CI 1.28-4.53, p = 0.01). CONCLUSIONS: We review the largest cohort of patients undergoing 2-stage hypospadias repair at a single institution. Complications and reoperation rates were approximately 50% in the setting of complex genital reconstruction.


Assuntos
Hipospadia/cirurgia , Seguimentos , Humanos , Hipospadia/patologia , Lactente , Masculino , Complicações Pós-Operatórias/epidemiologia , Reoperação , Estudos Retrospectivos , Fatores de Tempo , Resultado do Tratamento , Procedimentos Cirúrgicos Urológicos Masculinos/métodos
18.
J Urol ; 193(5 Suppl): 1843-7, 2015 May.
Artigo em Inglês | MEDLINE | ID: mdl-25813564

RESUMO

PURPOSE: We evaluated the relationship between testicular volume differential, total testis volume and total motile sperm count in adolescents with varicocele. Prior reports have been inconclusive regarding the association of testis volume with semen analysis parameters. MATERIALS AND METHODS: We retrospectively reviewed a single institution database of Tanner 5 adolescents with nonoperated left varicocele with at least 1 semen analysis available. Patients were included in analysis if they had clinical left varicocele, ultrasound measurement of testis volume and no prior inguinal or scrotal surgery. RESULTS: We analyzed the records of 100 patients. Mean ± SD age at presentation was 15.2 ± 3.5 years. The mean testicular volume differential was 8% ± 23% and 31 patients (31%) had a greater than 20% testicular volume differential. Mean total testis volume was 30.4 ± 13.3 cc. Varicocele was grade 3 in 39 patients, grade 2 in 50, grade 1 in 8 and ungraded in 3. Median total motile sperm count in the cohort was 42.0 (IQR 9.2, 105.8). ROC analysis with the Youden index indicated an optimal total testis volume cutoff of 30 cc to predict the total motile sperm count. In a multivariable logistic model accounting for age and varicocele grade a testicular volume differential of greater than 20% was associated with twice the odds of a total motile sperm count of less than 20 million per cc (OR 2.1, 95% CI 1.02-4.12, p = 0.04). Total testis volume less than 30 cc more than quadrupled the odds of a total motile sperm count of less than 20 million per cc (OR 4.2, 95% CI 1.8-9.7, p <0.001). CONCLUSIONS: Total testis volume and the testicular volume differential are associated with semen analysis outcomes in adolescents with varicocele. A testicular volume differential of greater than 20% doubles the odds of a low total motile sperm count. A total testis volume of less than 30 cc quadruples the odds of a low total motile sperm count.


Assuntos
Análise do Sêmen , Motilidade dos Espermatozoides , Testículo/patologia , Varicocele/patologia , Adolescente , Humanos , Modelos Logísticos , Masculino , Tamanho do Órgão , Estudos Retrospectivos , Testículo/diagnóstico por imagem , Ultrassonografia
19.
J Urol ; 191(5 Suppl): 1547-52, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24679872

RESUMO

PURPOSE: Concern in patients with bladder exstrophy after reconstruction regarding potential injury to pelvic neurourological anatomy and a resultant functional deficit prompted combined (simultaneous) cystometrography and electromyography after complete primary repair of bladder exstrophy. We determined whether complete primary repair of bladder exstrophy would adversely affect the innervation controlling bladder and external urethral sphincter function. MATERIALS AND METHODS: Complete primary repair of bladder exstrophy was performed via a modified Mitchell technique in newborns without osteotomy. Postoperative evaluation included combined cystometrography and needle electrode electromyography via the perineum, approximating the external urethral sphincter muscle complex. Electromyography was done to evaluate the external urethral sphincter response to sacral reflex stimulation and during voiding. RESULTS: Nine boys and 4 girls underwent combined cystometrography/electromyography after complete primary repair of bladder exstrophy. Age at study and time after complete primary repair of bladder exstrophy was 3 months to 10 years (median 11.5 months). Cystometrography revealed absent detrusor overactivity and the presence of a sustained detrusor voiding contraction in all cases. Electromyography showed universally normal individual motor unit action potentials of biphasic pattern, amplitude and duration. The external urethral sphincter sacral reflex response was intact with a normal caliber with respect to Valsalva, Credé, bulbocavernosus and anocutaneous (bilateral) stimulation. Synergy was documented by abrupt silencing of external urethral sphincter electromyography activity during voiding. CONCLUSIONS: After complete primary repair of bladder exstrophy combined cystometrography/electromyography in patients with bladder exstrophy showed normal neurourological findings, including sacral reflex responses, sustained detrusor voiding contraction and synergic voiding, in all patients postoperatively. These findings confirm the safety of complete primary repair of bladder exstrophy. Based on our results we have discontinued routine electromyography in these patients.


Assuntos
Extrofia Vesical/cirurgia , Uretra/inervação , Bexiga Urinária/inervação , Criança , Pré-Escolar , Eletromiografia , Feminino , Humanos , Lactente , Recém-Nascido , Masculino , Estudos Retrospectivos , Resultado do Tratamento , Urodinâmica
20.
BMC Urol ; 14: 46, 2014 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-24902693

RESUMO

BACKGROUND: The use of buccal mucosa grafts (BMG) for urethral reconstruction has increased in popularity over the last several decades. Our aim was to describe our institutional experience with and outcomes after BMG urethroplasty. METHODS: We conducted a retrospective cohort study of boys undergoing BMG urethral reconstruction. Preoperative and perioperative characteristics and postoperative outcomes were evaluated. RESULTS: Twenty-nine patients (median age 8.2 years) underwent BMG urethroplasty from 1995-2012. Of the 10 patients undergoing 1-stage repairs, 6 had tubularized grafts, the last of which was performed in 2000 due to an unacceptably high revision rate (100%). A 2-stage approach was elected for 19 patients (median follow-up 21.3 months). Complications including stricture, fistula, or chordee were seen in 60% of patients completing both stages and 32% required ≥1 revision. However, 71% of 2-stage patients were free of significant problems at last follow-up. CONCLUSIONS: We found BMG to be a reasonable option for use in complex pediatric urethral reconstruction. Tubularized grafts had poor results, and we no longer use them. We favor a 2-stage approach for all patients except those with "simple" non-hypospadiac strictures. Although revision procedures were not uncommon, the majority of patients were ultimately free of long-term problems.


Assuntos
Mucosa Bucal/transplante , Procedimentos de Cirurgia Plástica/métodos , Uretra/cirurgia , Estreitamento Uretral/cirurgia , Adolescente , Criança , Estudos de Coortes , Feminino , Humanos , Masculino , Estudos Retrospectivos , Resultado do Tratamento , Estreitamento Uretral/diagnóstico , Procedimentos Cirúrgicos Urológicos/métodos
SELEÇÃO DE REFERÊNCIAS
DETALHE DA PESQUISA