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Related Concept Videos

Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
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Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Transient Ischemic Attack l: Introduction01:26

Transient Ischemic Attack l: Introduction

A transient ischemic attack (TIA) is a brief episode of neurological dysfunction caused by a temporary, focal reduction in cerebral blood flow. Although symptoms resemble those of an ischemic stroke, the interruption in perfusion is short-lived and does not cause permanent infarction. TIAs are clinically important because they often serve as early warning events for future stroke.Mechanisms of Transient Cerebral IschemiaTransient cerebral ischemia may arise through several mechanisms. One...
Ischemic Heart Disease: Overview01:17

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Acute Myocardial Infarction in Rats
07:45

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Published on: February 16, 2011

Myocardial infarction in Swedish subway drivers.

Carolina Bigert1, Kristina Klerdal, Niklas Hammar

  • 1Department of Occupational and Environmental Health, Norrbacka 4th Floor, SE-171 76 Stockholm, Sweden. carolina.bigert@sll.se

Scandinavian Journal of Work, Environment & Health
|August 25, 2007
PubMed
Summary

Subway drivers in Stockholm do not face an increased risk of myocardial infarction. This study found no higher incidence of heart attacks compared to other employed individuals, easing health concerns for subway personnel.

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Area of Science:

  • Occupational health
  • Cardiovascular epidemiology
  • Environmental health

Background:

  • Particulate matter in urban air is linked to myocardial infarction risk.
  • High airborne particle levels in subways raise health concerns for staff.
  • Previous studies associate air pollution with cardiovascular events.

Purpose of the Study:

  • To investigate the incidence of myocardial infarction among subway drivers.
  • To assess potential negative health effects of subway environments on staff.
  • To determine if subway work increases heart attack risk.

Main Methods:

  • Population-based case-control study in Stockholm County (1976-1996).
  • Included 22,311 myocardial infarction cases and 131,496 controls.
  • Occupation data from national censuses; 54 cases and 250 controls were subway drivers.

Main Results:

  • Relative risk of myocardial infarction for subway drivers was not elevated.
  • Risk was 0.92 (95% CI 0.68-1.25) vs. manual workers.
  • Risk was 1.06 (95% CI 0.78-1.43) vs. all employed men.

Conclusions:

  • Subway drivers in Stockholm do not exhibit a higher incidence of myocardial infarction.
  • Employment as a subway driver is not associated with increased heart attack risk.
  • No influence of employment duration or latency on myocardial infarction risk was observed.