A nurse is providing pre-operative education to a client considering a vasectomy. Which of the following instructions should the nurse include? Select all that apply
"You will be sterile immediately after the procedure."
"You will need to use alternative contraception until azoospermia is confirmed."
"The procedure involves cutting and sealing the epididymis."
"It is a permanent method of male contraception."
"Sperm will no longer be able to reach the urethra."
Correct Answer : B,D,E
Vasectomy is a surgical male contraception technique that involves ligation or occlusion of the vas deferens to prevent sperm transport from the testes to the urethra. Sperm production by seminiferous tubules continues normally, but sperm are reabsorbed in the epididymis. Post-procedure, azoospermia (absence of sperm in semen) is confirmed by semen analysis after 15 to 20 ejaculations or approximately 3 months. Normal sperm count ranges from 15 million to over 200 million/mL.
Rationale for correct answers
B. After vasectomy, sperm may remain in the distal reproductive tract. Alternative contraception is necessary until a semen analysis confirms azoospermia, typically after 12 weeks or 15–20 ejaculations.
D. Vasectomy is a permanent form of male sterilization. Though reversal is technically possible, it is not guaranteed and is considered elective microsurgery with variable success rates.
E. By cutting or sealing the vas deferens, sperm are prevented from reaching the urethra, though seminal fluid from accessory glands is still ejaculated, making semen appear normal.
Rationale for incorrect answers
A. Sterility is not immediate after vasectomy because viable sperm remain in the vas deferens distal to the ligation site. Sperm clearance requires multiple ejaculations and must be confirmed by semen analysis.
C. The epididymis is not cut in a vasectomy. The procedure specifically targets the vas deferens, the duct that transports sperm from the epididymis to the ejaculatory ducts.
Take home points
- Vasectomy does not result in immediate sterility; contraception is still needed short-term.
- The vas deferens, not the epididymis, is the surgical target.
- Azoospermia confirmation is necessary post-vasectomy.
- Sperm continue to be produced but do not reach the ejaculate.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","C","E"]
Explanation
Penile anatomy includes specialized erectile tissues, vascular structures, and sensory regions that function in urination, copulation, and ejaculation. The penis is composed of two corpora cavernosa and one corpus spongiosum, all enveloped in dense connective tissue. The glans penis, an extension of the corpus spongiosum, houses numerous sensory receptors. Normal penile erection involves vasodilation and blood filling of erectile tissues, with typical penile length in erect state ranging from 1B.9 to 1E.5 cm and penile arterial systolic velocity >30 cm/s indicating normal erectile function.
Rationale for correct answers
A. The corpora cavernosa are paired cylindrical erectile tissues located dorsolaterally in the penis. They are primarily responsible for penile rigidity during erection by engorging with blood via deep penile arteries.
C. The glans penis is the bulbous distal end of the penis, formed by the expansion of the corpus spongiosum. It is richly innervated and plays a key role in tactile sensation and sexual stimulation.
E. The corpus spongiosum is a single midline erectile structure surrounding the urethra. It prevents urethral compression during erection and expands distally to form the glans penis, contributing to both structure and function.
Rationale for incorrect answers
B. The rete testis is not a penile structure. It is a network of interconnecting tubules located in the mediastinum testis, responsible for collecting sperm from seminiferous tubules and transporting it to the epididymis. It has no structural or functional association with the penis.
D. The corpus luteum is a temporary endocrine structure formed from the ruptured ovarian follicle after ovulation in females. It secretes progesterone and estrogen. It is exclusive to the female reproductive system and unrelated to male genital anatomy.
Take home points
- The penis consists of corpora cavernosa, corpus spongiosum, and glans penis.
- Rete testis is located within the testes, not the penis.
- Corpus luteum is a female ovarian structure, not present in males.
- Erectile tissues are essential for penile rigidity and reproductive function.
Correct Answer is ["A","B","D"]
Explanation
Testosterone physiology in males plays a vital role in reproductive, musculoskeletal, and behavioral functions. It is primarily synthesized by Leydig cells in the testes in response to luteinizing hormone (LH). Testosterone stimulates spermatogenesis, supports muscle and bone growth, and maintains sexual behavior. Normal serum testosterone levels range between 300–1,000 ng/dL. It exerts negative feedback on the hypothalamic-pituitary-gonadal axis by reducing gonadotropin-releasing hormone (GnRH) and luteinizing hormone, but inhibin, not testosterone, primarily suppresses follicle-stimulating hormone (FSH).
Rationale for correct answers
A. Testosterone stimulates spermatogenesis indirectly by acting on Sertoli cells, which express androgen receptors. It maintains the integrity of the seminiferous epithelium and supports germ cell development.
B. Testosterone promotes anabolic effects, increasing skeletal muscle mass and bone density by stimulating osteoblast activity and muscle protein synthesis. These effects are critical during puberty and for adult male maintenance.
D. Testosterone plays a central role in regulating libido and sexual arousal in males. Low testosterone is associated with decreased sexual desire and erectile dysfunction.
Rationale for incorrect answers
C. Testosterone exerts negative feedback on the hypothalamus, suppressing GnRH secretion. Elevated testosterone levels reduce GnRH, LH, and FSH to maintain homeostasis within the hypothalamic-pituitary-gonadal axis.
E. Testosterone does not directly inhibit FSH. FSH is primarily inhibited by inhibin B, which is secreted by Sertoli cells. Testosterone mainly inhibits LH release by acting on the anterior pituitary and GnRH neurons.
Take home points
- Testosterone supports spermatogenesis through Sertoli cell stimulation.
- It promotes muscle mass and bone growth via anabolic effects.
- It is essential for maintaining male libido and sexual behavior.
- Testosterone inhibits GnRH and LH, not FSH, which is suppressed by inhibin.
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