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Record W1950143300 · doi:10.5173/ceju.2013.01.art14

ANDROLOGY Varicocelectomy and infertility

2013· article· en· W1950143300 on OpenAlex
Jerzy B. Gajewski

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenueEditor-in-Chief s Voice List of Authors is an Important Element in a Scientific Publication · 2013
Typearticle
Languageen
FieldMedicine
TopicSperm and Testicular Function
Canadian institutionsDalhousie University
Fundersnot available
KeywordsAndrologyInfertilityVaricoceleMale infertilityGynecologyMedicineBiologyPregnancyGenetics

Abstract

fetched live from OpenAlex

There is no doubt that presence of varicocele contributes to testicular atrophy and decreased fertility in men [1]. There is also evidence that varicocelectomy improved quality of sperm and improve chances of pregnancy although some randomized controlled study were less impressive [2]. Obviously not every man with a significant varicocele has fertility issues or will benefit from varicocelectomy, but the odds favours performing surgery in these patients. It is still unclear through which mechanism varicocelectomy improves fertility. The possible options include decrease in hydrostatic pressure and venous reflex to the testis. There are also data indicating normalization of the testicular temperature and reduction in venous volume stabilize intratesticular testosterone metabolism (testicular proteins exhibit a reduced thermal stability) and improve spermatogenesis [3]. The present study of Bryniarski et al. [4] showed significant benefit of varicocelectomy for testicular growth with the initial hypotrophic testis using laparoscopic approach and confirming previous results in literature. The main advantage of this technique is optical magnification allowing preservation of lymphatics and testicular artery. The authors did not reported any complications with this technique, but it has to be remembered that although it is so called “minimal invasive”, it has its own complications and consequences. It increases cost of instrumentation and has infrequent but more serious complication including injury to the bowel or other organs, peritonitis or air embolism [5]. For that reason, microsurgical subinguinal technique which combines optical magnification for better exposure with easy and simple access, gains popularity [6]. It is also associated with less postoperative pain. It is still difficult to directly correlate improvement in testicular size to the improved sperm function or pregnancy rate. The present study would be more interesting if sperm quality and hormonal status was correlated to the grade of varicocele and tested after varicocelectomy. Indirectly, there were reports in literature, indicating that the sperm quality is inferior in a lot of patients with hypotrophic testis and with higher grade of varicocele. This improves after varicocelectomy [7]. The pregnancy rate increases only up to 50% after varicocelectomy, indicating that even with improved testicular size and/or sperm quality the pregnancy rate are far from optimal. It should be taken into consideration however that there are other factors influencing pregnancy rate equally on men and women site. There is also a question of possible beneficial effect of varicocelectomy on preventing development of late onset of hypogonadal state [8]. Confirmation of that statement obviously will require lengthy longitudinal population study. Varicocelectomy has its place in management of infertile men; however more studies are still required to fine tune evaluation, indication and technique of this intervention.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.002
metaresearch head score (Gemma)0.001
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesnone
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Observational · Consensus signal: Observational
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.008
Threshold uncertainty score0.691

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0020.001
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0010.001
Science and technology studies0.0000.000
Scholarly communication0.0000.001
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.015
GPT teacher head0.271
Teacher spread0.256 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it