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1.
Patient Educ Couns ; 107: 107582, 2023 02.
Artigo em Inglês | MEDLINE | ID: mdl-36502560

RESUMO

OBJECTIVES: To map which factors have been considered, explored, and found to influence physical activity (PA) promotion by oncology physicians and nurses (OPN). METHODS: A scoping review of empirical studies was conducted using Arksey and O'Malley's framework and the PRISMA-ScR guideline. The quality of the studies was evaluated using the QATSDD tool. RESULTS: Twenty-nine publications were included. The methodological quality of the studies was low to moderate. Studies have shown a positive attitude towards PA and recommending PA. PA knowledge seems to influence PA promotion by OPNs to some extent. Structural barriers for PA promotion are the most endorsed barriers but to what extent they influence PA promotion is unclear. The demographic and professional characteristics of OPNs and their PA behavior do not seem to influence PA promotion to a greater extent. Patients' PA interest, health characteristics, and medical conditions are additional factors. Their implications for PA promotion are not fully elucidated. CONCLUSIONS: The varied results across the studies, together with the methodological limitations of the studies, make it unclear to what extent the explored factors influence PA promotion by OPNs. PRACTICE IMPLICATIONS: More research into what influences OPNs' engagement in PA promotion is warranted to support clinical PA promotion.


Assuntos
Promoção da Saúde , Médicos , Humanos , Exercício Físico , Promoção da Saúde/métodos , Oncologia , Atividade Motora
3.
Andrology ; 4(2): 257-62, 2016 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-26789006

RESUMO

Percutaneous testicular sperm aspiration (TESA) has been known for decades as a simple, minimally invasive approach to sperm retrieval in azoospermic men. Because of lower reported sperm retrieval rates (SRR) when compared with microdissection testicular sperm extraction (mTESE), many centers now use mTESE as the first choice for retrieving spermatozoa in nonobstructive azoospermia (NOA). Objectives of this study were to evaluate the outcome and safety of TESA and mTESE in the treatment of azoospermia and to investigate the usefulness of a prognostic TESA to individualize protocols for couples and limit the use of invasive testicular procedures. IRB approval was obtained to retrospectively evaluate 208 patients undergoing multiple needle-pass TESA between 1999 and 2014. Prognostic TESA was performed on 125 men with NOA and 82 with obstructive azoospermia (OA). Nine NOA men and 31 OA men with previously demonstrated spermatozoa had a subsequent therapeutic TESA while nine NOA men with a failed TESA proceeded to mTESE. Main outcome measures were complication rates and SRR. SRR of the prognostic TESA was 30% (38/125) for NOA men and 100% (82/82) for OA men. Eight/nine NOA men and 31/31 OA men had spermatozoa found for intracytoplasmic sperm injection in a subsequent therapeutic TESA. In nine NOA men in whom a TESA produced no spermatozoa, only one had spermatozoa found with mTESE. Overall complication rates of TESA and mTESE were 3% (7/267) and 21% (3/14), respectively. TESA provides reasonable SRR and is a safe procedure. Successful prognostic TESA indicates future success with therapeutic TESA. Men with a failed TESA have a limited chance of sperm retrieval using mTESE. Approaching azoospermic men with an initial prognostic TESA followed by either therapeutic TESA and/or mTESE is an efficient algorithm in the management of azoospermia and limits the use of more invasive procedures.


Assuntos
Azoospermia/terapia , Recuperação Espermática , Adulto , Hormônio Foliculoestimulante/metabolismo , Humanos , Masculino , Agulhas , Estudos Retrospectivos , Recuperação Espermática/efeitos adversos , Recuperação Espermática/instrumentação , Testículo/metabolismo , Testículo/cirurgia , Testosterona/metabolismo
4.
Int J Impot Res ; 24(6): 234-41, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22717763

RESUMO

The European Sexual Confidence Survey examined the opinions of men and women on the link between a man's sexual confidence and functional (erectile and orgasmic) and emotional (satisfaction and self-confidence) aspects of sex and life in general. The online survey of sexually active adults (25-64 years of age) was conducted in 12 European countries using multiple-choice questions and predefined statements on sexual confidence. Erectile function was assessed by erection hardness score (EHS). Of 8576 respondents (4246 men, 4330 women), 23.9% reported non-optimal erectile hardness (EHS3) for themselves or their partners. 79.0% believed that an ability to sexually satisfy their partner is most closely linked to a man's sexual confidence. One in three linked a man's sexual confidence to erection hardness and ability to reach orgasm. The majority (∼94.0%) believed that it is important for a man to be sexually confident for good sex and that being able to have good sex enables men to have greater satisfaction with life overall. Lack of sexual confidence due to insufficient erection rigidity was considered by most respondents (∼65.0%) to reduce a man's confidence about the next sexual encounter and also his self-confidence and self-esteem overall.


Assuntos
Atitude , Disfunção Erétil/psicologia , Ereção Peniana/psicologia , Autoimagem , Comportamento Sexual/psicologia , Adulto , Europa (Continente) , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Satisfação Pessoal , Personalidade , Parceiros Sexuais/psicologia , Inquéritos e Questionários
5.
Spinal Cord ; 50(1): 63-6, 2012 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-21912403

RESUMO

STUDY DESIGN: Retrospective cohort study. OBJECTIVES: Anejaculation is commonly found in spinal cord injured (SCI) men. Clinical treatments and assisted reproductive techniques allow SCI men to father children but few home pregnancies have been reported. The objective of this paper is to evaluate the results from the last 20 years' of treatment with penile vibratory stimulation (PVS) and vaginal self-insemination at home in SCI men and their partners. SETTING: The data originate from two European centers and one American center. METHODS: A total of 140 SCI men with anejaculation and their healthy partners were available for this analysis. Men who obtained antegrade ejaculation by PVS and had motile sperm in the ejaculate were offered the possibility of PVS combined with vaginal self-insemination at home. Couples were instructed to perform PVS and to instill the ejaculate intravaginally. Outcome measures were pregnancy rate per couple, number of live births, total motile sperm count and time to pregnancies. RESULTS: Median total motile sperm count was 29 million (range, 1-92 million). In all, 60 of the 140 couples (43% pregnancy rate) achieved 82 pregnancies. Seventy-two of the pregnancies resulted in live births with the delivery of 73 healthy babies. Median time to first pregnancy was 22.8 months (6.0-98.4). No complications were reported. CONCLUSION: PVS combined with vaginal self-insemination may be performed as a viable, inexpensive option for assisted conception in couples in whom the SCI male partner has an adequate total motile sperm count and the female partner is healthy.


Assuntos
Ejaculação/fisiologia , Disfunção Erétil/etiologia , Disfunção Erétil/reabilitação , Inseminação Artificial Homóloga/métodos , Traumatismos da Medula Espinal/complicações , Vibração/uso terapêutico , Atividades Cotidianas/psicologia , Adulto , Estudos de Coortes , Disfunção Erétil/fisiopatologia , Feminino , Humanos , Inseminação Artificial Homóloga/instrumentação , Masculino , Gravidez , Estudos Retrospectivos , Traumatismos da Medula Espinal/fisiopatologia , Adulto Jovem
6.
Spinal Cord ; 49(7): 787-90, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21383760

RESUMO

OBJECTIVE: To create the International Spinal Cord Injury (SCI) Female Sexual and Reproductive Function Basic Data Set within the International SCI Data Sets. SETTING: An international working group. METHODS: The draft of the data set was developed by an international working group consisting of members appointed by the International Spinal Cord Society (ISCoS), the American Spinal Injury Association (ASIA), and a representative from the Executive Committee of the International SCI Standards and Data Sets. The data set was developed in an iterative process with review and comments by members of the Executive Committee of the International SCI Standards and Data Sets, ISCoS Scientific Committee, ASIA Board and the ISCoS Council, as well as all interested organizations and individuals. In addition, the data set was posted for 2 months at the ISCoS and ASIA websites for comments. ISCoS and ASIA approved the final version of the data set. To make the data set uniform, each variable and each response category within each variable have been specifically designed to promote the collection and reporting of comparable minimal data. RESULTS: Variables included in the International SCI Female Sexual and Reproductive Function Basic Data Set are as follows: date of data collection, interest in discussing sexual issues, sexual issues unrelated to spinal cord lesion, sexual dysfunction related to spinal cord lesion, psychogenic genital arousal, reflex genital arousal, orgasmic function and menstruation. Complete instruction for data collection, data sheet and training cases are available at the websites of ISCoS (http://www.iscos.org.uk) and ASIA (http://www.asia-spinalinjury.org).


Assuntos
Bases de Dados como Assunto/normas , Disfunções Sexuais Fisiológicas/diagnóstico , Disfunções Sexuais Fisiológicas/epidemiologia , Traumatismos da Medula Espinal/diagnóstico , Traumatismos da Medula Espinal/epidemiologia , Adulto , Comorbidade/tendências , Coleta de Dados/métodos , Coleta de Dados/tendências , Bases de Dados como Assunto/tendências , Feminino , Humanos , Reprodução/fisiologia , Disfunções Sexuais Fisiológicas/fisiopatologia , Traumatismos da Medula Espinal/fisiopatologia
7.
Spinal Cord ; 49(7): 795-8, 2011 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-21283085

RESUMO

OBJECTIVE: To create the International Spinal Cord Injury (SCI) Male Sexual Function Basic Data Set within the International SCI Data Sets. SETTING: An international working group. METHODS: The draft of the data set was developed by an international working group consisting of members appointed by the International Spinal Cord Society (ISCoS), the American Spinal Injury Association (ASIA) and a representative from the executive committee of the International SCI Standards and Data Sets. The data set was developed in an iterative process with review and comments by the members of the executive committee of the International SCI Standards and Data Sets, ISCoS scientific committee, ASIA Board and the ISCoS Council, as well as all the interested organizations and individuals. Next, the data set was posted for 2 months at the ISCoS and ASIA's websites for comments. ISCoS and ASIA approved the final version of the data set. To make the data set uniform, each variable and each response category within each variable have been specifically defined in a way that is designed to promote the collection and reporting of comparable minimal data. RESULTS: Variables included in the International SCI Male Sexual Function Basic Data Set are as follows: date of data collection, interest in discussing sexual issues, sexual issues unrelated to spinal cord lesion, sexual dysfunction related to spinal cord lesion, psychogenic erection, reflex erection, ejaculation and orgasmic function. Complete instructions for data collection, data sheet and training cases are available at the website of ISCoS (http://www.iscos.org.uk) and ASIA (http://www.asia-spinalinjury.org).


Assuntos
Bases de Dados como Assunto/normas , Disfunções Sexuais Fisiológicas/epidemiologia , Traumatismos da Medula Espinal/epidemiologia , Comorbidade/tendências , Coleta de Dados/métodos , Coleta de Dados/tendências , Bases de Dados como Assunto/tendências , Humanos , Classificação Internacional de Doenças/normas , Masculino , Disfunções Sexuais Fisiológicas/diagnóstico , Disfunções Sexuais Fisiológicas/fisiopatologia , Traumatismos da Medula Espinal/fisiopatologia
8.
Spinal Cord ; 47(1): 36-43, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-18957962

RESUMO

STUDY DESIGN: Experts opinions consensus. OBJECTIVE: To develop a common strategy to document remaining autonomic neurologic function following spinal cord injury (SCI). BACKGROUND AND RATIONALE: The impact of a specific SCI on a person's neurologic function is generally described through use of the International Standards for the Neurological Classification of SCI. These standards document the remaining motor and sensory function that a person may have; however, they do not provide information about the status of a person's autonomic function. METHODS: Based on this deficiency, the American Spinal Injury Association (ASIA) and the International Spinal Cord Society (ISCoS) commissioned a group of international experts to develop a common strategy to document the remaining autonomic neurologic function. RESULTS: Four subgroups were commissioned: bladder, bowel, sexual function and general autonomic function. On-line communication was followed by numerous face to face meetings. The information was then presented in a summary format at a course on Measurement in Spinal Cord Injury, held on June 24, 2006. Subsequent to this it was revised online by the committee members, posted on the websites of both ASIA and ISCoS for comment and re-revised through webcasts. Topics include an overview of autonomic anatomy, classification of cardiovascular, respiratory, sudomotor and thermoregulatory function, bladder, bowel and sexual function. CONCLUSION: This document describes a new system to document the impact of SCI on autonomic function. Based upon current knowledge of the neuroanatomy of autonomic function this paper provides a framework with which to communicate the effects of specific spinal cord injuries on cardiovascular, broncho-pulmonary, sudomotor, bladder, bowel and sexual function.


Assuntos
Sistema Nervoso Autônomo/fisiopatologia , Traumatismos da Medula Espinal/fisiopatologia , Sistema Nervoso Autônomo/patologia , Avaliação da Deficiência , Trato Gastrointestinal/fisiopatologia , Humanos , Cooperação Internacional , Disfunções Sexuais Fisiológicas/etiologia , Disfunções Sexuais Fisiológicas/fisiopatologia , Traumatismos da Medula Espinal/complicações , Traumatismos da Medula Espinal/diagnóstico , Bexiga Urinária/fisiopatologia
9.
Acta Neurochir Suppl ; 93: 159-63, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-15986748

RESUMO

PURPOSE: Present the possibility for treatment of male infertility, spasticity, and neurogenic detrusor overactivity in spinal cord lesioned (SCL) individuals with penile vibratory stimulation (PVS). METHOD: Obtaining reflex-ejaculation by PVS, by using a vibrator developed for this purpose. The stimulation was performed with a vibrating disc of hard plastic placed against the frenulum of the penis (amplitude > or = 2.5 mm). The vibration continued until antegrade ejaculation or for a maximum of 3 minutes followed by a pause of 1 minute before the cycle was repeated, maximally 4 times. RESULTS: >80% SCL men are able to obtain ejaculation with PVS. Pregnancy rates obtained with home PVS and intra-vaginal insemination was 22-62% (4 studies), and with PVS or electroejaculation and intrauterine insemination/in-vitro fertilization/intracytoplasmatic sperm injection 39-64% (9 studies). PVS was demonstrated to decrease spasticity significantly when measured by the modified Ashworth scale. In addition, a decrease of the number of spontaneous EMG events which probably indicate spasms was observed. Increase in bladder capacity at leakpoint following 4 weeks of frequent ejaculation with PVS treatment was likewise demonstrated. CONCLUSION: PVS has proved its importance for SCL male fertility, in the years to come its place in treatment of spasticity and neurogenic detrusor overactivity has to be established.


Assuntos
Infertilidade Masculina/reabilitação , Hipertonia Muscular/etiologia , Hipertonia Muscular/reabilitação , Pênis/fisiopatologia , Estimulação Física/métodos , Traumatismos da Medula Espinal/reabilitação , Vibração/uso terapêutico , Humanos , Infertilidade Masculina/etiologia , Masculino , Pênis/inervação , Recuperação de Função Fisiológica , Traumatismos da Medula Espinal/complicações , Resultado do Tratamento
10.
J Med Primatol ; 33(2): 98-104, 2004 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-15061722

RESUMO

The availability of sufficient amounts of spermatozoa of high quality is one of the main limiting factors in reproductive research and development of reproductive technologies in marmoset monkeys (Callithrix jacchus). Penile vibrostimulation (PVS) has been successfully used in semen collection in the squirrel monkey but with poor success rate in the marmoset. We report here on an improved protocol for PVS with a success rate of almost 90%. Ejaculates obtained by PVS were of enhanced quality compared with those obtained by rectal probe electro-ejaculation (RPE). PVS ejaculates contained on average three to fourfold higher numbers of total and motile spermatozoa. Assessment of sperm kinematics using computer-assisted sperm analysis indicated that there are also functional differences between spermatozoa collected by PVS and RPE. Marmoset spermatozoa in samples obtained by RPE swim in a more convoluted manner compared with those obtained by PVS.


Assuntos
Callithrix/fisiologia , Ejaculação , Pênis/fisiologia , Sêmen/química , Manejo de Espécimes/métodos , Espermatozoides/fisiologia , Análise de Variância , Animais , Estimulação Elétrica , Masculino , Vibração
12.
Spinal Cord ; 39(9): 455-70, 2001 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11571657

RESUMO

STUDY DESIGN: Review of literature. OBJECTIVE: To review the physical aspects related to penile erection, ejaculatory dysfunction, semen characteristics, and techniques for enhancement of fertility in spinal cord lesioned (SCL) men. SETTING: Worldwide: individuals with traumatic as well as non-traumatic SCL. RESULTS: Recommendations for management of erectile dysfunction in SCL men: If it is possible to obtain a satisfactory erection but of insufficient duration, then try to use a venous constrictor band to find out if this is sufficient to maintain the erection. Otherwise we recommend Sildenafil. If Sildenafil is not satisfactory then use intracavernous injection with prostaglandin E(1) (some SCL men may prefer cutaneous or intraurethral application). We discourage the implantation of penile prosthesis for the sole purpose of erection. Recommendations for management of ejaculatory dysfunction in SCL men: Penile vibratory stimulation (PVS) to induce ejaculation is recommended as first treatment choice. If PVS fails, SCL men should be referred for electroejaculation (EEJ). Semen characteristics: Impaired semen profiles with low motility rates are seen in the majority of SCL men. Recently reported data gives evidence of a decline in spermatogenesis and motility of ejaculated spermatozoa shortly after (few weeks) an acute SCL. It is suggested that some factors in the seminal plasma and/or disordered storage of spermatozoa in the seminal vesicles are mainly responsible for the impaired semen profiles in men with chronic SCL. Fertility: Home insemination with semen obtained by PVS and introduced intravaginally in order to achieve successful pregnancies may be an option for some SCL men and their partners. The majority of SCL men will further enhance their fertility potential when using either PVS or EEJ combined with assisted reproduction techniques such as intrauterine insemination or in vitro fertilization with or without intracytoplasmic sperm injection.


Assuntos
Disfunção Erétil/etiologia , Infertilidade Masculina/etiologia , Traumatismos da Medula Espinal/complicações , Traumatismos da Medula Espinal/fisiopatologia , Alprostadil/uso terapêutico , Ejaculação/fisiologia , Terapia por Estimulação Elétrica , Disfunção Erétil/fisiopatologia , Disfunção Erétil/terapia , Humanos , Infertilidade Masculina/fisiopatologia , Infertilidade Masculina/terapia , Masculino , Ereção Peniana/fisiologia , Inibidores de Fosfodiesterase/uso terapêutico , Piperazinas/uso terapêutico , Purinas , Técnicas Reprodutivas , Sêmen/fisiologia , Citrato de Sildenafila , Motilidade dos Espermatozoides , Sulfonas , Vasodilatadores/uso terapêutico , Vibração/uso terapêutico
13.
J Urol ; 166(3): 1181-4, 2001 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-11490319

RESUMO

PURPOSE: We established a canine model of subfertility after spinal cord injury and examined the time course of acute changes in semen quality and spermatogenesis after spinal cord injury. MATERIALS AND METHODS: Seven dogs underwent surgical T7 spinal cord injury. Six dogs were used as controls. Electroejaculation and testicular fine needle aspiration were performed at baseline and twice weekly for 3 weeks after spinal cord injury. Semen quality change was examined by standard semen analysis. Spermatogenesis was assessed by flow cytometry of testicular fine needle aspiration in all dogs as well as by testicular histology at study conclusion in 4 controls and 4 spinal cord injured dogs. RESULTS: No significant changes in spinal cord injured dogs were noted before 3 weeks after injury. From baseline to 3 weeks after injury certain changes were evident in spinal cord injured dogs. Mean antegrade sperm motility decreased from 62.9% to 20.1% (p = 0.008), mean total sperm (antegrade plus retrograde total sperm) decreased from 423 to 294 x 106 which was not statistically significant, and the incidence of testicular haploid cells decreased from 75.6% to 48.3% (p = 0.028). No significant change in any parameter was present in control dogs. The mean number of mature spermatids per cross-sectional tubule on final testicular histology was significantly decreased in spinal cord injured dogs compared with controls (13.6 versus 43.9, p = 0.02). CONCLUSIONS: In the canine model tested the dogs readily survived spinal cord injury, electroejaculation was effective for obtaining ejaculate and fine needle aspiration allowed serial examination of spermatogenesis. Three weeks after spinal cord injury but not before 3 weeks sperm motility and spermatogenesis were significantly decreased. However, at the same point this decrease in spermatogenesis was not yet reflected in the total ejaculated sperm count.


Assuntos
Infertilidade Masculina/etiologia , Contagem de Espermatozoides , Motilidade dos Espermatozoides , Espermatogênese , Traumatismos da Medula Espinal/complicações , Animais , Modelos Animais de Doenças , Cães , Masculino , Fatores de Tempo
15.
J Urol ; 165(2): 426-9, 2001 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-11176389

RESUMO

PURPOSE: We investigate internal and external sphincter responses during penile vibratory stimulation and electroejaculation in men with spinal cord injury. MATERIALS AND METHODS: Ejaculation induction with simultaneous recording of external and internal sphincter pressures was performed in 9 spinal cord injured men. Of the patients with upper motor neuron lesions 3 underwent penile vibratory stimulation and 3 underwent electroejaculation. In 3 men who did not respond to PVS, including 1 with upper motor neuron and 2 with lower motor neuron lesions, penile vibratory stimulation and subsequent electroejaculation were performed. RESULTS: In successful penile vibratory stimulation and electroejaculation upper motor neuron cases external sphincter pressure first reached a peak (average 180 cm. H2O) and subsequently decrease followed in 3 to 10 seconds by a peak in internal sphincter pressure (average 178 cm. H2O), which exceeded external sphincter pressure and ejaculation occurred. During electroejaculation, the pattern progressed, despite complete discontinuation of electrical stimulation. In electroejaculation, there was a trend for a more rapid return of external sphincter pressure greater than internal sphincter pressure, which may explain the electroejaculation retrograde fraction. In nonresponders external sphincter pressure never increased to more than 105 cm. H2O in response to penile vibratory stimulation and no ejaculation was induced. In nonresponders to penile vibratory stimulation, electroejaculation induced a typical sustained increase in internal sphincter pressure and external sphincter pressure but at lower peak pressures. CONCLUSIONS: Forceful contraction of the external sphincter followed by contraction of the internal sphincter always precedes ejaculation during electroejaculation and penile vibratory stimulation. Similarities between penile vibratory stimulation and electroejaculation suggest that the latter induces ejaculation via a complex neurological pathway rather than by simple direct end organ stimulation. The sustained nature of the response to electroejaculation suggests that electrical stimulation should be stopped completely during ejaculation to allow more relaxation of the external sphincter, as this may lead to a decrease in the retrograde fraction.


Assuntos
Ejaculação , Estimulação Elétrica , Traumatismos da Medula Espinal/fisiopatologia , Uretra/fisiopatologia , Humanos , Masculino , Pênis , Pressão , Fatores de Tempo , Vibração
16.
Am J Primatol ; 52(3): 149-54, 2000 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11078029

RESUMO

Penile vibrostimulation (PVS), a noninvasive repeatable method, has been shown in the squirrel monkey to yield semen of higher quality than rectal probe electro-ejaculation (RPE). The present study aimed at establishing the conditions for PVS to collect ejaculates from marmoset monkeys. Ten adult males were trained on the appropriate handling before each was subject to six to 12 PVS tests. Ejaculation was stimulated using a FertiCare personal vibrator fitted with a 2 cm x 0.5 cm i.d. glass tube. The stimulus was repeatedly applied over a frequency of 75-95 Hz and amplitude of 1-2 mm for up to 20 min. Ejaculates were analyzed for volume, total sperm number, sperm concentration, and proportion of living and motile sperm. Ejaculates were obtained in 31 of 88 PVS tests; 87.1% of the ejaculations occurred at 80-85 Hz frequency and 1-1.5 mm amplitude. In 18 tests ejaculates were produced within 49.7 seconds. Ejaculates were characterized by (mean values): volume 31.9 microl, total sperm number 34.2 x 10(6)/ejaculate, concentration 1,154.2 x 10(6) sperm/ml, live sperm 74.6%, motile sperm 59.6%. Total number and concentration of spermatozoa were significantly enhanced in singly living males. PVS yielded three to four times more spermatozoa than comparable previously published values for RPE. Enhancing the success rate by preselecting males for responsiveness may render PVS the sperm collection method of choice in marmoset monkeys.


Assuntos
Callithrix/fisiologia , Ejaculação , Sêmen , Animais , Masculino , Pênis/fisiologia , Manejo de Espécimes , Vibração
18.
Med Pediatr Oncol ; 34(3): 191-4, 2000 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10696125

RESUMO

BACKGROUND: The possibility of cryopreservation of semen from adolescents has until now received only little attention. Therefore, we have investigated the possibility of cryopreservation of semen in adolescent boys with cancer. PROCEDURE: Forty-five boys, aged 13-18 years, admitted because of cancer during the period January 1, 1995 to July 31, 1998 were eligible. Semen was obtained after masturbation in the majority of the cases. In three boys, semen was preserved after penile vibration or electroejaculation in general anaesthesia. The semen samples were analysed for concentration, motility, and morphology according to the WHO guidelines. The sample was transferred into straws prior to cryopreservation at 196 degrees C in liquid nitrogen. RESULTS: Twenty-one boys delivered a semen sample for cryopreservation. Four boys were offered and accepted sperm banking but were not able to produce a sample. In 20 cases time did not allow an attempt of sperm banking, the boy was not assessed to be mature enough to deliver a semen sample, or the procedure was not accepted. The boys delivered 1-3 samples, and the total number of spermatozoa ranged from 0-210 millions. Median percentage of motile sperm was 50% (range 9-86%). Semen quality improved with age; however, a 13- year- old boy produced 75 million spermatozoa with 38% motile cells. CONCLUSIONS: Pubertal maturation should be assessed in all boys admitted for cancer, and the possibility of sperm banking should be discussed with the patient and his parents.


Assuntos
Criopreservação , Infertilidade Masculina/prevenção & controle , Neoplasias , Sêmen , Adolescente , Antineoplásicos/efeitos adversos , Humanos , Infertilidade Masculina/etiologia , Masculino , Neoplasias/terapia , Puberdade , Lesões por Radiação/complicações
19.
Br J Anaesth ; 82(3): 360-5, 1999 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-10434816

RESUMO

Aspirin ingestion within the previous 7-10 days is often considered a relative contraindication to performing invasive procedures. However, aspirin is an important component of many patients' treatment and withholding therapy for this time may be dangerous. To measure both the magnitude of the impairment in primary haemostasis induced by aspirin and how much recovery of platelet function occurs within 48 h of stopping aspirin, we studied serial changes in bleeding time (BT) in a randomized, double-blind, placebo-controlled study. Fifty-two healthy volunteers had BT performed before and at 2, 9, 24 and 48 h after a 7-day course of either aspirin 75 mg, 300 mg or placebo. The main outcome recorded was BT at each time. Nearly 25% of subjects had extended BT to more than 10 min, but no BT were greater than 10 min, 48 h after stopping aspirin. There was a small but statistically significant (P < 0.01) difference between the 48-h and baseline BT in both aspirin groups (49 and 64 s in the 75 mg and 300 mg groups, respectively). There was no difference in the magnitude or time course of effect between low and medium dose aspirin (P = 0.392 and P = 0.797, respectively). We conclude that despite considerable inter-individual variability in the magnitude of aspirin effect on primary haemostasis, the time course of effect was consistent. In healthy volunteers, the defect in primary haemostasis had largely disappeared 48 h after the last dose.


Assuntos
Aspirina/farmacologia , Hemostasia/efeitos dos fármacos , Inibidores da Agregação Plaquetária/farmacologia , Adulto , Aspirina/administração & dosagem , Tempo de Sangramento , Relação Dose-Resposta a Droga , Método Duplo-Cego , Esquema de Medicação , Feminino , Hemoglobinas/metabolismo , Humanos , Masculino , Pessoa de Meia-Idade , Inibidores da Agregação Plaquetária/administração & dosagem , Contagem de Plaquetas/efeitos dos fármacos , Fatores de Tempo
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