[Autonomic function in uremia and diabetes mellitus]

Area of Science:

• Nephrology
• Endocrinology
• Neurology

Background:

• Autonomic nervous system (ANS) dysfunction is a known complication in various chronic diseases.
• Both diabetes mellitus and uremia independently affect physiological functions.
• The combined impact of diabetes and uremia on ANS function requires further investigation.

Purpose of the Study:

• To evaluate and compare autonomic function in patients with diabetes, uremia, and combined diabetes and uremia.
• To assess the severity of autonomic nervous system involvement in these patient groups.

Main Methods:

• Autonomic function was assessed using a parasympathetic test (Valsalva maneuver).
• Sympathetic function was evaluated through two tests: cold stimulus and amyl nitrite administration.
• Patient groups included diabetics, nondiabetic uremics, and uremic nondiabetics, compared to healthy controls.

Main Results:

• All patient groups demonstrated autonomic nervous system dysfunction compared to healthy controls.
• Parasympathetic and sympathetic nerve divisions were both affected.
• The most severe autonomic dysfunction was observed in patients with concurrent diabetes and uremia.

Conclusions:

• Both diabetes and uremia contribute to autonomic nervous system dysfunction.
• The combination of diabetes and uremia significantly exacerbates autonomic nervous system impairment.
• Clinical attention to autonomic complications is crucial for patients with diabetes and/or uremia.