Morphological and hemodynamic features of the carotid artery on doppler ultrasound in hypertensive patients
H A O PhanAbstract
Background
Vascular lesions in hypertensive patients often manifest in the entire vascular system, including the carotid artery. Evaluation of morphological changes, carotid artery function helps to treat, predict and prevent disease complications. We conducted the study with the following objectives: 1) Described the characteristics and morphology of the carotid artery on color Doppler ultrasound in hypertensive patients. 2) Determined the relationship between the carotid intima-media thickness (cIMT) on color Doppler ultrasound images with some clinical and subclinical characteristics and some risk factors in hypertensive patients.
Subjects and methods
A cross-sectional descriptive study on 64 hospitalized hypertensive patients.
Results
62.5% are female. Mean age 66.41±11.91. The right common cIMT 0.74 (0.7-0.81) mm; the left was 0.8 (0.7-0.8) mm; The average cIMT on both sides was 0.75 (0.75-0.79) mm. Mean peak systolic velocity of the right common carotid artery 58.03±14.74 cm/s; left side 60.71±15.73 cm/s. Right common carotid end-diastolic velocity 14.68±4.88 cm/s; left side 16.09±6.04 cm/s. Right common carotid resistance index 0.75±0.063; left side 0.74±0.067. There were 25 (39.1%) cases of right common carotid atherosclerotic plaque with the thickest 2.50±0.71mm and 33 (51.6%) cases of left common carotid plaque with the thickest 2.3 (1.99-2)mm. There were an independent correlation between age and sex with the cIMT on both sides with correlation coefficients of R=0.514, p=0.013; R=0.514, p < 0.0001, respectively.
Conclusion
There were a correlation between the common cIMT with age and sex, every 1 year increase will increase the thickness of the common cIMT by 0.005 mm. cIMT was higher than in men.