The Monday Effect: Weekly and Circadian Patterns in Acute Cardiovascular Emergencies Monday Effect in Cardiovascular...

Area of Science:

• Cardiology
• Psychosomatic Medicine
• Public Health

Background:

• Monday syndrome describes psychosomatic stress at the work week's start.
• It's linked to acute cardiovascular events.
• This study investigates its association with cardiovascular emergencies.

Purpose of the Study:

• To evaluate the link between Monday syndrome and cardiovascular emergency incidence.
• To identify specific times and patient characteristics associated with increased risk.

Main Methods:

• Retrospective analysis of 500 patients (aged 18-65) with acute cardiovascular events.
• Data collected from June 2024 to June 2025 across two centers.
• Poisson regression used to assess Monday's effect on event rates.

Main Results:

• Cardiovascular events peaked on Mondays (19.6%) and were lowest on Sundays (10.6%).
• A significant cluster of events occurred in the early morning (6-10 AM).
• Monday presentation showed a 23% higher event rate (IRR 1.23, p=0.002).

Conclusions:

• Monday syndrome is associated with increased cardiovascular emergencies, especially early mornings.
• Higher blood pressure and heart rate observed on Mondays.
• Potential contributors include sympathetic activation, hormonal changes, and psychosocial stress.