Nationwide use of postmortem retrieved sperm in Israel: a follow-up report

Single men's attitudes towards posthumous use of their sperm cryopreserved due to illness in Israel

BACKGROUND

Banking of frozen spermatozoa by single men opens the possibility of procreation long after their death. Requests for posthumous reproduction by the families of the deceased are growing, raising an ethical debate, especially when written instructions were not left by the patients and in cases of unplanned perimortem collection. The issue of the progenitors' intention to procreate after death is the key to ethically based decision-making in these cases.

OBJECTIVES

To evaluate the attitude of single men cryopreserving spermatozoa before life-threatening medical situations towards post-mortem usage of their cryopreserved spermatozoa.

MATERIALS & METHODS

Adult single men prior to sperm cryopreservation before cytotoxic therapy were asked to sign a structured form declaring their will and instructions for the usage of their cryopreserved spermatozoa in case of their demise.

RESULTS

Four hundred fifty-two men of diverse ethnicity, religious and cultural backgrounds signed the form providing instructions for the use of their cryopreserved spermatozoa in case of mortality. Their age was 27.4 ± 8.06 years. Seven (1.5%) patients willed their spermatozoa for posthumous reproduction to a sibling, 22 (4.9%) to parents, and 26 (5.7%) to their informal female partners. The significant majority (n = 397; 87.8 %) of the single men were ordered to destroy their cryopreserved spermatozoa in case of their expiry. Note that, 26-39 years old men were less likely (81.8% vs. >90% in other ages) to order sperm destruction, as well as men with a poorer prognosis (83% vs. 90%).

DISCUSSION

In this study group, most single men cryopreserving spermatozoa in the face of future life-threatening morbidity do so for their own future live parenthood, and are not interested in posthumous reproduction.

CONCLUSION

Our results doubt the claim that single men who had an unplanned perimortem sperm collection can be universally presumed to have wished to father a child posthumously. Any claimed assumed consent in these cases should be considered for each case individually based on its specific circumstances.

Ethical and Practical Considerations of Perimortem Gamete Procurement for Palliative Care Providers

Requests for perimortem gamete procurement (PGP) typically arise by a surrogate decision maker after the unexpected death or incapacitation of a reproductive-aged individual. Palliative care clinicians should have a working knowledge of the medical, ethical, and practical considerations pertaining to such requests. In this paper, we describe a case in which the PGP request originated from an incapacitated patient's parents. We review the technologies associated with PGP and posthumous assisted reproduction (PAR) and discuss the ethical and legal issues involved in such cases, including recent position statements from national and international reproductive health groups. Finally, we provider readers with a stepwise approach for considering requests for PGP.

What can we learn about posthumous sperm retrieval after extra long-term follow-up?

PURPOSE

To describe spermatozoa extraction rate by testicular sperm extraction (TESE) for posthumous sperm retrieval (PMSR) and examine harvest time impact on sperm motility; to compare long-term sperm usage between married vs. single deceased men.

METHODS

This retrospective study included all PMSR cases in Shamir Medical Center during 2003-2021. We evaluated sperm cryopreservation according to latency time after death. Then, we assessed sperm usage according to Israeli PMSR regulations.

RESULTS

The study included 69 (35 married and 34 singles) deceased men with average age of 30.3 ± 7.8 years. Sperm was cryopreserved in 65 cases (94.2%) after maximum and average harvest time of 40 and 16.5 ± 8.1 h, respectively. Motile sperm extraction was associated with significantly shorter harvest time compared with non-motile sperm (13.8 ± 7.3 vs. 18.7 ± 8.1 h, p = 0.046). Sperm usage among married deceased was significantly higher than single (15.6% vs. 0%, p = 0.05). Disposal requests were lower among single compared to married men relatives without reaching statistical difference. Eventually, single men had significantly higher rate of non-used cryopreserved samples (93.8% vs 69.6%, p = 0.01).

CONCLUSION

This large long-term cohort study demonstrates high efficacy of PMSR. We found significant harvest latency time difference between motile and non-motile preserved sperm. Clinical sperm usage rate justifies the efforts for PMSR among married deceased. However, contradicting policy on the topic of single men (which implies liberal sperm preservation but rigid prevention of usage) results with high non-used sperm rate and relatives' extremely sophisticated emotional burden.

Perimortem and postmortem sperm acquisition: review of clinical data

PURPOSE

To provide the clinicians with the most comprehensive medical information about sperm acquisition peri/postmortem.

METHODS

The review was conducted according to the PRISMA statement. MEDLINE and Cochrane databases were searched up to January 2021. All studies reporting post or perimortem harvesting of sperm with any indication of an outcome, recognition and viability of sperm, and its utilization and treatment outcome were included. Studies that recorded cases but discussed only the ethical or legal issues without any information about the medical details were excluded.

RESULTS

Twenty-four studies were included in this review. One hundred forty-eight cases were described; in 113 of them, sperm was retrieved. A variety of techniques for sperm acquisition were used. The data collected are limited and comparing the efficacy of the different approaches is not feasible. The longest time interval described between the death and viable sperm acquisition was 3 days. The sperm quality varies between the studies. One hundred thirty-six mature oocytes were injected with the retrieved sperm; the fertilization rate was 41%. Transfer cycles of 25 embryos and 8 live births are reported in the medical literature.

CONCLUSION

The overall low quality and high heterogeneity of the available data impair the ability to draw definitive conclusions. However, it can be stated that sperm acquisition up to at least 3 days postmortem can result in the live birth of healthy offspring. Further studies are needed to clarify the medical questions regarding the best techniques, success rates, and wellbeing of the parties involved.

[Posthumous assisted reproductive technologies]

Several types of posthumous ART, all exceptional, can be considered. Using frozen sperm by the wife or concubine results in a conception at a time when the father has been dead for longer or shorter. His ban is broadly consensual in France. Transferring frozen embryos after the man's death raises more questions. The only options in France for the surviving wife are donation to another couple, donation to research or destruction. The National Consultative Ethics Committee was several times favourable to allowing this practice under certain conditions, but it is still prohibited after the 2011 revision of the bioethics laws.

Ethical and practical considerations concerning perimortem sperm procurement in a severe neurologically damaged patient and the apparent discrepancy in validation of proxy consent in various postmortem procedures

INTRODUCTION

Although sperm procurement and preservation has been become commonplace in situations in which infertility can be easily foreseen, peri- or postmortem sperm procurement for reproductive use in unexpected coma or death is not generally accepted. There are no laws and regulations for this kind of intervention in all countries and they may also differ from country to country. Intensive care specialists can be confronted with a request for peri- or postmortem sperm procurement, while not being aware of the country-specific provisions.

CASE DESCRIPTION

A young male patient who suffered 17 L blood loss and half an hour of cardiopulmonary resuscitation was admitted to a university hospital for an ill-understood unstoppable abdominal bleed. After rapid deterioration of the neurological situation, due to severe post-anoxic damage, the decision was made to withdraw life-sustaining treatment. At that moment the partner of the patient asked for perimortem sperm procurement, which was denied, on the basis of the ethical reasoning that consent of the man involved was lacking. Retrospectively the decision was right according to Dutch regulations; however, with more time for elaborate ethical reasoning, the decision outcome, without the awareness of an existing prohibition, also could have been different.

CONCLUSIONS

Guidelines and laws for peri- or postmortem sperm procurement differ from country to country, so any intensive care specialist should have knowledge from the latest legislation for this specific subject in his/her country. An overview is provided. A decision based on ethical reasoning may appear satisfying, but can unfortunately be in full contrast with the existing laws.