Fatherhood without apparent spermatozoa after vasectomy

Smith, Joseph; Cranston, David; O'Brien, Timothy; Guillebaud, John; Hindmarsh, J.; Turner, A.G.

doi:10.1016/s0140-6736(94)91052-9

Cited by 58 publications

(35 citation statements)

References 5 publications

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“…In roughly 1/80 000 cases, a man may even father a child despite the apparent absence of sperma tozoa in his ejaculate. [4,5] Thus, for instance, a case occurred in the UK, where a woman fell pregnant while her husband produced persistently negative seminal specimens. [1,6,7] However, it remains the responsibility of the practitioner to ensure that the patient is properly informed of such risks, including the possibility of conception despite the operation 'due purely to the vagaries of nature' , [7] as well as of the modus operandi for establishing or confirming sterility.…”

Section: Choice and Responsibilitymentioning

confidence: 99%

Legal liability for failure to prevent pregnancy (wrongful pregnancy)

Coetzee

2017

S Afr Med J

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Can the conception of a child ever constitute damage recoverable in law? This article considers the liability of healthcare practitioners for failing to prevent a pregnancy. Developments leading to the recognition of wrongful pregnancy as a cause of (legal) action in South Africa (SA), are briefly outlined. The salient points of the relevant judgments by SA courts are set out to expose the rationale underlying the judgments and to highlight that recognition of liability for wrongful pregnancy resulted from an application of fair and equitable principles of general application. Conduct that could expose practitioners to liability is identified from reported cases and inferred from general principles laid down in case law.

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Section: Choice and Responsibilitymentioning

confidence: 99%

Legal liability for failure to prevent pregnancy (wrongful pregnancy)

Coetzee

2017

S Afr Med J

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“…The failure rate of 1/2000 with vasectomy has set the bar very high as well. 1 In 2007, the 10th summit group published their updated recommendations for regulatory approval for hormonal male contraception. This international group was designed to review the status of clinical development projects for male hormonal contraception.…”

Section: Hormonal Treatmentmentioning

confidence: 99%

“…Vasectomy is a permanent, expensive, surgical solution with very low failure rates of 1/2000. 1 Condoms are a less desirable option and with typical and ideal use results in a 14 and 3% yearly pregnancy rate, respectively. The ideal contraceptive would be 100% effective, reversible, noninvasive, affordable, with no short-or long-term side effects.…”

mentioning

confidence: 99%

Update on Male Hormonal Contraception: Is the Vasectomy in Jeopardy?

Manetti

Honig

2010

Int J Impot Res

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Traditionally, male contraception has consisted of either barrier methods, such as condoms, or vasectomy. However, in recent years, we have made great strides in the basic science and clinical medicine to better understand the feedback mechanisms and physiology of the male reproductive system. These advances have enabled the development of several nonsurgical, hormonal, reversible, well-tolerated alternatives for male contraception. Men are more likely now than ever to participate in the choice of contraceptive techniques. This review will discuss the current status and recent developments in nonsurgical hormonal male contraception, a field that has been historically limited by social, financial and physiological challenges.

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“…Although a single negative semen examination indicates that the vasectomy was a success, routine analysis in the United Kingdom calls for two examinations. 3 In the United States, 56% of the doctors require one, 39% require two and 5% ask for three semen examinations after vasectomy in order to confi rm azoospermia. 2 The risk of delayed recanalization is small and has been estimated to be as low as one in 2000 to 7000 patients.…”

Section: Case Reportmentioning

confidence: 99%

Paternity after vasectomy with two previous semen analyses without spermatozoa

Lucon

Pasqualoto

et al. 2007

Sao Paulo Med. J.

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CONTEXT: The risk of paternity after vasectomy is rare but still exists. Overall failure to achieve sterility after vasectomy occurs in 0.2 to 5.3% of patients due to technical failure or recanalization. The objective of this report was to describe a rare but notable case of proven paternity in which the semen analyses had not given evidence of spermatozoa. CASE REPORT: A 44-year-old vasectomized man whose semen analyses had shown azoospermia became a father four years after sterilization. Blood sample DNA analysis on the child and husband proved biological paternity. Vasectomy may fail in the long run even without spermatozoa in semen analysis. The patient must be aware of this possibility.

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Fatherhood without apparent spermatozoa after vasectomy

Cited by 58 publications

References 5 publications

Legal liability for failure to prevent pregnancy (wrongful pregnancy)

Legal liability for failure to prevent pregnancy (wrongful pregnancy)

Update on Male Hormonal Contraception: Is the Vasectomy in Jeopardy?

Paternity after vasectomy with two previous semen analyses without spermatozoa

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