P-020. Time interval between repeat testicular sperm extraction procedures; is there an optimal time?
نویسندگان
چکیده
منابع مشابه
P-23: Is There An Association between HOST Grades and Sperm Quality
Background: Intracytoplasmic sperm injection (ICSI) can be considered the solstice in vitro insemination technique because it has powerfully allowed the treatment of male factor infertility, but in this procedure, except visual morphological selection, there is no standardization for sperm selection. Recently, hypo osmotic swelling test (HOST) has been proposed to have the potential to select i...
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Patients with non-obstructive azoospermia (NOA) were once considered to be infertile with few treatment options due to the absence of sperm in the ejaculate. In the last two decades, the advent of intracytoplasmic sperm injection (ICSI), and the application of various testicular sperm retrieval techniques, including fine needle aspiration (FNA), conventional testicular sperm extraction (TESE) a...
متن کاملMicrodissection testicular sperm extraction
Microdissection testicular sperm extraction (microTESE) is considered the gold standard method for surgical sperm retrieval among patients with non-obstructive azoospermia (NOA). In this review, we will discuss the optimal evaluation of NOA patients and strategies to medically optimize NOA patients prior to microTESE. In addition, we will also discuss technical principles and pearls to maximize...
متن کاملHow successful is repeat testicular sperm extraction in patients with azoospermia?
BACKGROUND Little is known about the extraction rate in repeated sperm retrieval procedures in azoospermic patients. This study aimed to assess the feasibility of repeated sperm recovery in these patients. METHODS A total of 1066 azoospermic men had their first sperm recovery between 1 January 1995 and 31 December 2003. A total of 381 men had obstructive azoospermia (OA), 628 nonobstructive a...
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In this paper we study the problem of find optimal feedback control that can keep an agent within an interval for at least a certain amount of expected time with the least energy. The dynamics of the agent are subject to the perturbation of random noises, and thus are given by a stochastic differential equation. By formulating the problem as an optimal control problem, we propose a solution by ...
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ژورنال
عنوان ژورنال: Human Reproduction
سال: 1999
ISSN: 1460-2350,0268-1161
DOI: 10.1093/humrep/14.suppl_3.149