Research Article

Blood Pressure Variability during Angiography in Patients with Ischemic Stroke and Intracranial Artery Stenosis

Table 1

Demographic and clinical characteristics of study patients.

Period between disease onset and angiography exam (days)
<3 (n = 33)3–14 (n = 81)

Demographics
 Age, years65.0 (57.0, 78.0)62.0 (55.0, 72.0)0.19c
 Male15 (45.45%)36 (44.44%)0.92b
Characteristics at admission
 NIHSS at admission6.0 (4.0, 15.0)3.0 (1.0, 6.0)0.0002c
 SBP at admission160.0 (143.0, 180.0)140.0 (130.0, 160.0)0.004c
 DBP at admission90.0 (80.0, 91.0)80.0 (70.0, 90.0)0.02c
 LDL, mmol/L3.3 ± 1.12.9 ± 0.80.02a
Medical history
 Location of intracranial artery stenosis0.15b
  Posterior circulation8 (24.24%)31 (38.27%)
  Anterior circulation25 (75.76%)50 (61.73%)
 Type of TOAST0.25d
  Large artery atherosclerosis25 (75.76%)70 (86.42%)
  Small artery disease4 (12.12%)7 (8.64%)
  Cardiogenic stroke4 (12.12%)3 (3.70%)
  Others0 (0%)1 (1.23%)
 Anterior circulation28 (84.85%)51 (62.96%)0.02b
 Hypertension27 (81.82%)58 (71.60%)0.26b
 Diabetes10 (30.30%)35 (43.21%)0.20b
 Cardiogenic stroke10 (30.30%)8 (9.88%)0.007b
 Atrial fibrillation7 (21.21%)2 (2.47%)0.002d
 Intravenous thrombolytics8 (24.24%)3 (3.70%)0.002d
Medication history
 Med for HTN use during operation28 (87.50%)67 (82.72%)0.53b
 Calcium channel blockers15 (55.56%)45 (77.59%)0.04b
Preoperative characteristics
 Preoperative SBP, mmHg172.6 ± 34.7168.8 ± 31.60.58a
 Preoperative DBP, mmHg95.3 ± 19.093.4 ± 15.10.59a
 SBP CV, %4.9 (2.8, 10.1)5.9 (3.8, 10.0)0.69c
 DBP CV, %8.2 (5.0, 12.8)5.6 (3.2, 9.8)0.07c

Data on continuous variables are presented as mean ± standard deviation (median (interquartile range, P25-P75)); other categorical variables are shown as frequency (%). Abbreviations: NIHSS, National Institutes of Health Stroke Scale; SBP, systolic blood pressure; DBP, diastolic blood pressure; HR: heart rate; LDL, low-density lipoprotein; TOAST, Trial of ORG 10172 in acute stroke treatment; CV, coefficient of variation. Bold values indicate statistical significance, . aT test; bchi-square test; cMann-Whitney U Test; dFisher’s exact test.