Carotid Velocities Determine Cerebral Blood Flow Deficits in Elderly Men with Carotid Stenosis <50%

Table 1

The background data of the 123 subjects collected at the 1st and the 2nd followup of the cohort.

	Age 68 years	Age 81 years
In whole cohort:	n = 123	n = 123
carotid stenosis right <50%, n (%)		116 (94.3)
carotid stenosis left <50%, n (%)		110 (89.4)
right ICA’s PSV (m/s); min–max; mean (SD)		.3–3.0;  .76 (4.1)
left ICA’s PSV (m/s); min–max; mean (SD)		.4–4.0;  .82 (.47)
In subjects with right carotid stenosis <50%:		n = 116
right ICA’s PSV (m/s); min–max; mean (SD)		.3–1.2;    .67 (.17)
frequency of stenosis: 0%–35%–40%; n subjects		22–91–3
In subjects with left carotid stenosis <50%:		n = 110
Left ICA’s PSV (m/s); min-max; mean (SD)		.4–1.3;   .69 (.17)
Frequency of stenosis: 0%–35%–40%–45%; n subjects		21–85–2–2
In subjects with carotid stenosis <50%, left or right:	n = 107	n = 107
SBP, mmHg (SD)	150.6 (19.0)	143.4 (15.3)
DBP, mmHg (SD)	92.1 (7.9)	82.5 (6.4)
pulse pressure, mmHg (SD)	58.1 (14.8)	60.1 (14.1)
Ankle brachial index:
Right	1.13 (.12)	1.03 (.19)
Left	1.09 (.12)	1.00 (.19)
Difference ABI ages 81–68, right		−.10 (.17)
Difference ABI ages 81–68, left		−.09 (.15)

ICA: internal carotid artery.