Related Experiment Video
Updated: Jun 6, 2026
11:29
Surgical Techniques to Optimize Ovarian Reserve during Laparoscopic Cystectomy for Ovarian Endometrioma
Published on: January 22, 2022
Ovarian hyperstimulation syndrome: definition, incidence, and classification.
Einat Zivi1, Alex Simon, Neri Laufer
1Department of Obstetrics and Gynecology, Hadassah University Hospital, Jerusalem, Israel. zivi_e@hotmail.com
Seminars in Reproductive Medicine
|November 18, 2010
Summary
Ovarian hyperstimulation syndrome (OHSS) is a serious complication of fertility treatments. Recognizing at-risk patients and implementing preventive strategies are crucial for managing this potentially fatal condition.
Area of Science:
- Reproductive endocrinology and infertility.
- Medical complications of assisted reproductive technologies.
Background:
- Ovarian hyperstimulation syndrome (OHSS) is an iatrogenic complication of controlled ovarian stimulation.
- Severe OHSS can be life-threatening, necessitating careful risk assessment.
Purpose of the Study:
- To review the risk factors associated with OHSS.
- To discuss preventive measures for OHSS in patients undergoing controlled ovarian stimulation.
Main Methods:
- Literature review of clinical classifications and risk factors for OHSS.
- Analysis of existing preventive strategies for OHSS.
Main Results:
- Identified major risk factors like polycystic ovary syndrome.
- Highlighted the need for individualized patient management and treatment approaches.
Conclusions:
- Prudent recognition of at-risk populations is essential for managing OHSS.
- Preventive measures should be implemented before and during treatment cycles, considering patient characteristics and available options.
Related Concept Videos
01:25Hyperthyroidism I: Introduction
Hyperthyroidism is a type of thyrotoxicosis characterized by the thyroid gland's overproduction of the thyroid hormones triiodothyronine (T3) and thyroxine (T4). This hormone excess increases the basal metabolic rate and enhances sensitivity to catecholamines.DiagnosisDiagnosis is based on clinical features and biochemical testing. It typically shows suppressed thyroid-stimulating hormone (TSH) levels below 0.4 mIU/L, with elevated free T3 and/or T4. Additional tests, including thyroid...
02:07Oogenesis
In human women, oogenesis produces one mature egg cell or ovum for every precursor cell that enters meiosis. This process differs in two unique ways from the equivalent procedure of spermatogenesis in males. First, meiotic divisions during oogenesis are asymmetric, meaning that a large oocyte (containing most of the cytoplasm) and minor polar body are produced as a result of meiosis I, and again following meiosis II. Since only oocytes will go on to form embryos if fertilized, this unequal...
01:27Ovarian Cycle
The menstrual cycle includes a critical component known as the ovarian cycle, which undergoes two main phases each month—the follicular phase and the luteal phase. The follicular phase is variable and averaging around 14 days. Ovulation, triggered by a surge in luteinizing hormone (LH), marks the transition between the two phases. The second phase, the luteal phase, is relatively consistent, lasting approximately 14 days, and is marked by the activity of the corpus luteum. While a cycle length...
01:30Hormonal Control of the Ovarian Cycle
The ovarian cycle is meticulously regulated by the hypothalamic-pituitary-gonadal axis. This cycle orchestrates the release of a mature oocyte, essential for reproduction.
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
Before puberty, the hypothalamus releases GnRH in a low frequency, low amplitude pulsatile manner. This along with the immature hypothalamic-pituitary-gonadal axis activity, results in low estrogen levels and the absence of a fully functional ovarian cycle. At puberty, GnRH secretion increases in both frequency and...
01:24Disorders of the Female Reproductive System
The female reproductive system can be affected by several disorders, including Premenstrual Syndrome (PMS), Premenstrual Dysphoric Disorder (PMDD), endometriosis, and various forms of cancer. PMS and PMDD are cyclical conditions that cause physical and emotional distress, with symptoms that include edema, mood swings, and food cravings. PMDD is a more severe form of PMS characterized by increased symptom severity that peaks during the luteal phase and tends to improve or resolve shortly after...
01:27Hyperthyroidism II: Pathophysiology
Hyperthyroidism is a hypermetabolic state caused by elevated levels of thyroid hormones, triiodothyronine (T3) and thyroxine (T4). It results from dysregulation at the thyroid, pituitary, or immune system level and affects multiple organ systems.PathophysiologyThe most common cause of hyperthyroidism is Graves’ disease, an autoimmune disorder in which antibodies, specifically thyroid-stimulating antibodies (TSAb), a subtype of TSH receptor antibodies (TRAb), bind to and activate TSH receptors...