[Postinjection changes in angiopathy patients].

Area of Science:

• Vascular Biology
• Diabetology
• Microcirculation Research

Background:

• Diabetes mellitus and obliterating thromboangiitis affect lower limb vasculature.
• Angiopathy in diabetes mellitus patients can be aggravated by long-term insulin management.
• Understanding microcirculatory responses to injections is vital for patient care.

Purpose of the Study:

• To investigate the microcirculatory blood vessel response in foot skin after hip injections.
• To compare responses in patients with diabetes mellitus (insulin-treated and untreated), thromboangiitis, and healthy controls.
• To evaluate the impact of injection procedures on vascular health.

Main Methods:

• Utilized the 'skin window' method for comprehensive microcirculatory unit assessment.
• Studied patients with diabetes mellitus (4-18 years insulin use), obliterating thromboangiitis, and healthy volunteers.
• Administered 2ml saline solution of NaCl via hip injection to assess vascular response.

Main Results:

• Compensatory enhancement of functioning microvessel density observed at rest in patients with angiopathy.
• Painful injections triggered a stereotypic vasospastic response in all subjects.
• Pathologically persistent vasospasm occurred in patients with angiopathy, indicating compromised vascular function.

Conclusions:

• Injection procedures can be a contributing factor to vascular affection, especially in insulin-treated diabetes mellitus patients.
• Maximum tissue sparing during injections is essential to mitigate risks.
• The study highlights the need for cautious injection techniques in vulnerable patient groups.