scholarly journals Varicocele surgery or embolization: Which is better?

2013 ◽  
Vol 6 (4) ◽  
pp. 266 ◽  
Author(s):  
Darby Cassidy ◽  
Keith Jarvi ◽  
Ethan Grober ◽  
Kirk Lo
Keyword(s):  
Failure Rate ◽  
Attractive Alternative ◽  
Published Data ◽  
Technical Failure ◽  
Failure Rates ◽  
Male Factor Infertility ◽  
Male Factor ◽  
Gonadal Vein ◽  
Microsurgical Approach ◽  
The Right

Introduction: Varicocele remains the most commonly identifiedcorrectable cause of male factor infertility. Surgical correction isthe most commonly performed technique to treat varicoceles with a technical failure rate of less than 5%. An attractive alternative to surgery is the selective catheterization and embolization of the gonadal vein. This data are limited by small series.Methods: We reviewed a total of 158 patients. These patientsunderwent embolization for clinical varicoceles and male factorinfertility between 2004 and 2008. Of these, 56% underwentattempted bilateral embolization, 43% unilateral left-sided embolization and 1.3% unilateral right-sided embolization.Results: Of these patients who underwent attempted bilateralembolization, 19.3% did not experience a successful obliterationof the right gonadal vein and 2.3% (2/88) experienced a failure rate in the embolization of the left gonadal vein. Of the 2 attempts at unilateral right-sided embolization, there were no failures. Of the 68 unilateral left-sided embolization attempts, there was a 4.4% failure rate. Of all of the right-sided embolization attempts, 18.9% failed, while 3.2% of the left-sided attempts failed.Conclusion: This review represents the largest contemporary series of varicocele embolization outcomes currently in the literature. Our 19.3% technical failure rate for bilateral varicocele embolization is higher than the current published rate of 13% and is largely related to failure to successfully occlude the right gonadal vein. This supports our belief that bilateral varicoceles are best managed with a primary microsurgical approach, where technical failure rates are expected to be less than 5% based on published data. Men withunilateral left-sided varicoceles should be offered both options as they have similar failure rates, but with embolization offering some clear advantages to the patient.

scholarly journals Clinical Evaluation of Bracket Bonding Using Two Different Polymerization Sources

2008 ◽  
Vol 78 (5) ◽  
pp. 922-925 ◽  
Author(s):  
Nikolaos S. Koupis ◽  
Theodore Eliades ◽  
Athanasios E. Athanasiou
Keyword(s):  
Failure Rate ◽  
Orthodontic Treatment ◽  
Light Emitting Diode ◽  
Rank Test ◽  
Dental Arch ◽  
Halogen Lamp ◽  
Failure Rates ◽  
Bond Failure ◽  
Significant Difference ◽  
The Right

Abstract Objective: To comparatively assess clinical failure rate of brackets cured with two different photopolymerization sources after nine months of orthodontic treatment. Materials and Methods: The sample of this study comprised 30 patients who received comprehensive orthodontic treatment by means of fixed appliances. Using the same adhesive, 600 stainless steel brackets were directly bonded and light cured for 10 seconds with the light-emitting diode (LED) lamp or for 20 seconds with the conventional halogen lamp. A split-mouth design randomly alternated from patient to patient was applied. Failure rates were recorded for nine months and analyzed with Pearson χ2 test, and log-rank test at α = .05 level of significance. Results: The overall failure rate recorded with the halogen unit (3.33%) was not significantly different from the failure rate for the LED lamp (5.00%). Significantly more failures were found in boys compared with girls, in the mandibular dental arch compared with the maxillary arch, and in posterior segments compared with anterior segments. However, no significant difference was found between the right and left segments. Conclusion: Both light-curing units showed sufficiently low bond failure rates. LED curing units are an advantageous alternative to conventional halogen sources in orthodontics because they enable a reduced chair-time bonding procedure without significantly affecting bond failure rate.

scholarly journals Continuous Mixtures of Exponentials and IFR Gammas Having Bathtub-Shaped Failure Rates

2010 ◽  
Vol 47 (04) ◽  
pp. 899-907 ◽  
Author(s):  
Henry W. Block ◽  
Naftali A. Langberg ◽  
Thomas H. Savits ◽  
Jie Wang
Keyword(s):  
Exponential Distribution ◽  
Failure Rate ◽  
Gamma Distribution ◽  
Failure Rates ◽  
Increasing Failure Rate ◽  
Continuous Mixture ◽  
Mixtures Of Exponentials ◽  
The Right

It can be seen that a mixture of an exponential distribution and a gamma distribution with increasing failure rate for the right choice of parameters can yield a distribution with a bathtub-shaped failure rate. In this paper we consider a continuous mixture of exponentials and a continuous mixture of gammas with increasing failure rates and show that the resulting mixture has a bathtub-shaped failure rate.

scholarly journals Continuous Mixtures of Exponentials and IFR Gammas Having Bathtub-Shaped Failure Rates

2010 ◽  
Vol 47 (4) ◽  
pp. 899-907 ◽  
Author(s):  
Henry W. Block ◽  
Naftali A. Langberg ◽  
Thomas H. Savits ◽  
Jie Wang
Keyword(s):  
Exponential Distribution ◽  
Failure Rate ◽  
Gamma Distribution ◽  
Failure Rates ◽  
Increasing Failure Rate ◽  
Continuous Mixture ◽  
Mixtures Of Exponentials ◽  
The Right

It can be seen that a mixture of an exponential distribution and a gamma distribution with increasing failure rate for the right choice of parameters can yield a distribution with a bathtub-shaped failure rate. In this paper we consider a continuous mixture of exponentials and a continuous mixture of gammas with increasing failure rates and show that the resulting mixture has a bathtub-shaped failure rate.

scholarly journals Triplet Delivery following Unilateral Twin Salpingocyesis

2015 ◽  
Vol 2015 ◽  
pp. 1-3
Author(s):  
Johnson O. Komolafe ◽  
Rasaq A. Akindele ◽  
Adeniyi O. Fasanu ◽  
Callistus A. Akinleye ◽  
Taiwo O. Akinbile ◽  
...  
Keyword(s):  
Embryo Transfer ◽  
Uterine Cavity ◽  
Male Factor Infertility ◽  
Male Factor ◽  
Primary Infertility ◽  
The Right

We present the case of a 36-year-old woman with primary infertility of six-year duration who had IVF/ICSI on account of male factor infertility. Transvaginal scanning done on the 30th day following embryo transfer revealed an empty uterine cavity with two gestational sacs containing active fetal echoes in the right adnexum. Patient reluctantly had right salpingectomy via open laparatomy. The patient had repeat embryo transfer eleven months afterwards that culminated in the delivery of living twins with a fetal papyraceous.

It is better an approximate answer to the right question than the exact answer to the wrong question : the case of the psychometric analysis of the ASQ:SE

2020 ◽  
Author(s):  
Luis Anunciacao ◽  
janet squires ◽  
J. Landeira-Fernandez
Keyword(s):  
Internal Structure ◽  
Statistical Methods ◽  
Principal Component ◽  
Psychological Theory ◽  
Published Data ◽  
Multivariate Statistical ◽  
Exact Answer ◽  
Wide Range ◽  
Ages And Stages Questionnaire ◽  
The Right

One of the main activities in psychometrics is to analyze the internal structure of a test. Multivariate statistical methods, including Exploratory Factor analysis (EFA) and Principal Component Analysis (PCA) are frequently used to do this, but the growth of Network Analysis (NA) places this method as a promising candidate. The results obtained by these methods are of valuable interest, as they not only produce evidence to explore if the test is measuring its intended construct, but also to deal with the substantive theory that motivated the test development. However, these different statistical methods come up with different answers, providing the basis for different analytical and theoretical strategies when one needs to choose a solution. In this study, we took advantage of a large volume of published data (n = 22,331) obtained by the Ages and Stages Questionnaire Social-Emotional (ASQ:SE), and formed a subset of 500 children to present and discuss alternative psychometric solutions to its internal structure, and also to its subjacent theory. The analyses were based on a polychoric matrix, the number of factors to retain followed several well-known rules of thumb, and a wide range of exploratory methods was fitted to the data, including EFA, PCA, and NA. The statistical outcomes were divergent, varying from 1 to 6 domains, allowing a flexible interpretation of the results. We argue that the use of statistical methods in the absence of a well-grounded psychological theory has limited applications, despite its appeal. All data and codes are available at https://osf.io/z6gwv/.

Electromigration and Electrochemical Reaction Mixed Failure Mechanism in Gold Interconnection System

1999 ◽  
Author(s):  
Hide Murayama ◽  
Makoto Yamazaki ◽  
Shigeru Nakajima
Keyword(s):  
Failure Mechanism ◽  
Failure Rate ◽  
Electrochemical Reaction ◽  
Dielectric Films ◽  
Failure Rates ◽  
Interlayer Dielectric ◽  
Bipolar Devices ◽  
Gold Metallization

Abstract Power bipolar devices with gold metallization experience high failure rates. The failures are characterized as shorts, detected during LSI testing at burn-in. Many of these shorted locations are the same for the failed devices. From a statistical lot analysis, it is found that the short failure rate is higher for devices with thinner interlayer dielectric films. Based upon these results, a new electromigration and electrochemical reaction mixed failure mechanism is proposed for the failure.

Clinical Case: Complications after Endovascular Treatment of Intracranial Aneurysm in a Patient after Subarachnoid Hemorrhage

2020 ◽  
Vol 8 (1) ◽  
pp. 9-15
Author(s):  
Petrov Nikolay ◽  
◽  
Marinova R. ◽  
Odiseeva Ev.
Keyword(s):  
Intracranial Aneurysm ◽  
Endovascular Treatment ◽  
Clinical Case ◽  
Endovascular Coiling ◽  
Published Data ◽  
Military Medical Academy ◽  
Life Threatening ◽  
Arachnoid Hemorrhage ◽  
The Right ◽  
Brain Artery

Abstract: Intracranial aneurysm is one of the most common neurovascular complications. During the recent years the accepted treatment of enraptured cranial aneurysm is noninvasive endovascular coiling. This technique is modern but it is not without complications which can be serious and life-threatening. A clinical case of a patient admitted to the ICU of Military Medical Academy - Sofia with sub arachnoid hemorrhage is described. After a positive clinical course, the check-up magnetic resonance showed intracranial aneurism of the right carotid artery. The patient underwent angiographic endovascular treatment. Vasospasm of the middle and right brain artery and thrombosis were detected during the procedure. Attempt of thromboaspiration was made without success. This article reviews published data on broad-spectrum researches concerning complications of endovascular coiling of intracranial aneurysms and the ways to prevent and reduce them.

Men's perception and understanding of male-factor infertility in the UK

2021 ◽  
Vol 30 (9) ◽  
pp. S8-S16
Author(s):  
Eleanor L Stevenson ◽  
Cheng Ching-Yu ◽  
Chang Chia-Hao ◽  
Kevin R McEleny
Keyword(s):  
Public Health ◽  
Emotional Support ◽  
Health Professionals ◽  
Male Fertility ◽  
Public Knowledge ◽  
Evidence Based ◽  
Male Factor Infertility ◽  
Male Factor ◽  
The Public ◽  
The Uk

Male-factor infertility is a common but stigmatised issue, and men often do not receive the emotional support and the information they need. This study sought to understand awareness of male fertility issues compared to female fertility among the UK general male public, and also what were perceived as being the optimum methods for providing support for affected men, emotionally and through information. Men feel that male infertility is not discussed by the public as much as female infertility. Lifestyle issues that affect male fertility are not well understood, and men affected by infertility desire more support, including online, from health professionals and through peer support. Health professionals, including those in public health, could offer evidence-based programmes to reduce stigma and increase public knowledge about infertility, as well as offer emotional support to men with infertility problems.

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