Related Experiment Videos
[The relation of flow velocity in the carotid vessels to age]
Insights
Systolic blood flow rate in the extracranial carotid artery significantly decreases with age. This study observed reduced blood flow in both the common carotid artery and internal carotid artery in older individuals.
Area of Science:
- Vascular Ultrasound
- Cardiovascular Physiology
- Geriatric Medicine
Context:
- Aging impacts vascular function, potentially affecting blood flow dynamics.
- Doppler sonography is a key non-invasive tool for assessing blood flow velocity.
- Understanding age-related changes in carotid blood flow is crucial for cardiovascular health assessment.
Purpose:
- To quantify age-related changes in peak systolic velocity (PSV) within the extracranial carotid arteries.
- To determine the statistical significance of observed blood flow rate reductions in relation to age.
Summary:
- This study utilized continual Doppler sonography to measure peak systolic blood flow rates in the common carotid artery (CCA) and internal carotid artery (ICA).
- Three non-cardiac patient groups (average ages 22, 76, and 93 years) were analyzed, revealing a statistically significant decrease in PSV with advancing age in both vessels (p < 0.01).
- CCA PSV decreased from 0.692 m/s (22 yrs) to 0.297 m/s (93 yrs); ICA PSV decreased from 0.506 m/s (22 yrs) to 0.211 m/s (93 yrs).
Impact:
- Provides quantitative evidence of age-related decline in carotid artery blood flow velocity.
- Highlights the importance of age as a factor in interpreting Doppler sonography findings for carotid arteries.
- Contributes to the understanding of physiological vascular changes associated with aging.
Abstract:
Using continual Doppler sonography, the authors measured the highest systolic blood flow rate in the extracranial carotid bloodstream in 3 groups of non-cardiac patients of an average age of 22, 76 and 93 years. In each group, the arteria carotis communis showed, with increasing age, a decrease in the highest systolic rate: 0.692 +/- 0.084 - 0.414 +/- 0.073 - 0.297 +/- 0.031 m/s (p less than 0.01 in all the three groups). Equally, a decrease in the highest systolic rate was found in the arteria carotis interna: 0.506 +/- 0.071 - 0.298 +/- 0.064 - 0.211 +/- 0.10 m/s (p less than 0.01 in all 3 groups). The paper shows a statistically significant decrease in the systolic blood rate in the carotid bloodstream related to aging (p less than 0.01) and discusses causes of this phenomenon.