Is sleep-disordered breathing associated with miscarriages? An emerging hypothesis.

Area of Science:

• Reproductive Health
• Sleep Medicine
• Cardiovascular Health

Background:

• Sleep-disordered breathing (SDB) is prevalent and linked to cardiovascular issues, often underdiagnosed in women due to vague symptoms.
• Sleep disruption affects female hormonal cycles (estrogen, progesterone, prolactin, LH, FSH), potentially impacting overall female health and pregnancy.
• Miscarriage, a first-trimester pregnancy loss, affects 25% of pregnancies, with unknown causes in up to half of cases.

Purpose of the Study:

• To explore the potential link between sleep-disordered breathing (SDB) and miscarriage risk.
• To investigate if SDB-related factors like sleep fragmentation and intermittent hypoxemia contribute to first-trimester pregnancy loss.
• To consider SDB treatment as a potential intervention for reducing miscarriage in subsequent pregnancies.

Main Methods:

• This study is a speculative review based on existing literature.
• Analysis of known risk factors for miscarriage and their overlap with risk factors for SDB.
• Examination of the physiological effects of sleep fragmentation and intermittent hypoxemia on pregnancy.

Main Results:

• Shared risk factors for SDB and miscarriage include advanced maternal age, obesity, and polycystic ovarian syndrome.
• SDB is characterized by sleep fragmentation and intermittent hypoxemia, which are hypothesized to negatively impact pregnancy.
• The hormonal disruptions caused by SDB may further contribute to adverse pregnancy outcomes.

Conclusions:

• Sleep-disordered breathing presents a potential, under-recognized risk factor for miscarriage.
• Sleep fragmentation and intermittent hypoxemia associated with SDB may be key contributors to pregnancy loss.
• Intervention for SDB could represent a novel strategy to reduce miscarriage rates in at-risk women.