Obstetric Neuropathy in Diabetic Patients: The "Double Hit Hypothesis"

Area of Science:

• Neurology
• Obstetrics
• Endocrinology

Background:

• Diabetes mellitus (DM) in pregnant women can lead to a subclinical peripheral nervous system (PNS) damage, representing the "first hit."
• The delivery process, the "second hit," can cause further neurological injury.
• The cumulative effect of these "hits" increases the risk of neurological damage and pathophysiological changes during childbirth.

Approach:

• This review examines the "two-hit" model for neurological damage in pregnant women with DM.
• It outlines mechanisms of diabetic neuropathy, focusing on distal symmetrical polyneuropathy.
• It discusses the role of macrosomia, vaginal delivery complications, and anatomical sites of obstetric neuropathy.

Key Points:

• Diabetes mellitus is a significant risk factor for neuropathy in pregnant women.
• Childbirth can induce neurological syndromes and pathophysiological changes.
• Hyperglycemia in DM causes distinct damage to sensory and motor nerves based on nerve cell body location.

Conclusions:

• The "two-hit" model provides a framework for understanding neurological risks in diabetic pregnancies.
• Understanding these mechanisms is crucial for preventing maternal neurological injury during delivery.
• Further research into the specific pathophysiological pathways is warranted.