European Journal of Applied Physiology

, Volume 112, Issue 7, pp 2385–2391

Evaluation of carotid wave intensity in firefighters following firefighting

  • Huimin Yan
  • Christopher A. Fahs
  • Sushant Ranadive
  • Lindy M. Rossow
  • Abbi D. Lane
  • Stamatis Agiovlasitis
  • George Echols
  • Denise Smith
  • Gavin P. Horn
  • Thomas Rowland
  • Bo Fernhall
Original Article

Abstract

Sudden cardiac events are the leading cause of line-of-duty firefighter deaths, but little information exists elucidating the physiologic responses. Wave intensity (WI) is a new hemodynamic index that provides information about the dynamic behavior of the heart and the vascular system and their interaction. The larger first peak wave (W1) occurs during early systole and is associated with cardiac contractility. The second smaller peak (W2) follows a period of relatively little net wave (NA) production and may be caused by reflected waves from the brain. This study aimed at determining arterial WI changes in response to live firefighting activities. We examined the WI of 39 firefighters (2 females) with a mean age of 28 ± 1 years and BMI of 26.6 ± 0.7 kg m−2 at rest, and immediately after 3 h of live firefighting drills. WI was assessed on the right common carotid artery using an Aloka high-resolution ultrasound. The magnitude of the W1 decreased significantly from 15,925 ± 1,341 to 11,540 ± 886 mmHg m s−3, p < 0.05. The magnitude of W2 remained unchanged (W2: from 2,080 ± 200 to 2,144 ± 358 mmHg m s−3). Net NA decreased from 53 ± 5 to 40 ± 4 mmHg m s−2. In conclusions, our data suggest that left ventricular function and arterial-ventricular coupling decreased following live firefighting, and this may be related to the documented increase in risk of clinical events during and after firefighting activities.

Keywords

Firefighting Carotid wave intensity Arterial-ventricular coupling 

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Huimin Yan
    • 1
  • Christopher A. Fahs
    • 1
    • 2
  • Sushant Ranadive
    • 1
  • Lindy M. Rossow
    • 1
    • 2
  • Abbi D. Lane
    • 1
  • Stamatis Agiovlasitis
    • 1
    • 3
  • George Echols
    • 1
  • Denise Smith
    • 4
  • Gavin P. Horn
    • 5
  • Thomas Rowland
    • 6
  • Bo Fernhall
    • 1
  1. 1.Department of Kinesiology and Community HealthUniversity of Illinois at Urbana-ChampaignUrbanaUSA
  2. 2.Department of Health and Exercise ScienceUniversity of OklahomaNormanUSA
  3. 3.Department of KinesiologyMississippi State UniversityMississippi StateUSA
  4. 4.Department of Health and Exercise SciencesSkidmore CollegeSaratoga SpringsUSA
  5. 5.Illinois Fire Service InstituteChampaignUSA
  6. 6.Department of PediatricsBaystate Medical CenterSpringfieldUSA

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