Prospective Study
Copyright ©The Author(s) 2021.
World J Cardiol. Oct 26, 2021; 13(10): 574-584
Published online Oct 26, 2021. doi: 10.4330/wjc.v13.i10.574
Table 1 Baseline characteristics of the study population
Baseline characteristics
Control group (conventional hemostasis), n = 147
Oximetry – plethysmography group, n = 152
P value
Age (mean ± SD, yr) 61.5 ± 9.860.1 ± 11.60.2731
Male sex109 (74.1)115 (75.7)0.7642
Body mass index (mean ± SD, kg/m2)0.3432
Normal (18.5-24.9)31 ± 21.135 ± 23
Overweight (25-29.9)73 ± 49.763 ± 41.4
Obese (> 30)43 ± 29.354 ± 35.5
Risk factors/Comorbidities, n (%)
Hypertension89 (60.5)92 (60.5)0.9972
Diabetes mellitus29 (19.7)40 (26.3)0.1762
Insulin6 (20.7)14 (35.0)0.1963
Dyslipidemia112 (76.2)114 (75.0)0.8112
Smoking69 (46.9)74 (48.7)0.8502
History of coronary artery disease46 (31.3)52 (34.2)0.5912
Supraventricular arrhythmia39 (26.5)20 (13.2)0.0042
History of interventions, n (%)
Percutaneous coronary intervention 49 (33.3)56 (36.8)0.5252
Coronary artery bypass grafting11 (7.5)7 (4.6)0.2963
Table 2 Procedural data of the study population
Procedural data
Control group (conventional hemostasis) (n = 147)
Oximetry – plethysmography group (n = 152)
P value
PCI, n (%)44 (29.9)58 (38.2)0.1341
Primary PCI, n (%)12 (8.2)15 (9.9)0.6071
Heparin dose, median (IQR)5000 (5000-7000)5000 (5000-7000)0.1132
INR, mean ± SD1.1 ± 0.3)1.1 ± 0.3)0.9583
Significant coronary artery lesions, n (%)
Left anterior descending artery32 (21.8)36 (23.7)0.6931
Circumflex10 (6.8)12 (7.9)0.7181
Right coronary artery 17 (11.6)20 (13.2)0.6761
Number of vessels4, n (%)0.7073
PCI in 1 vessel (%)35 (81.4)50 (87.7)
PCI >1 vessels (%)8 (18.6)7 (12.3)
Hemostatic device0.2231
Air chamber, n (%)80 (54.4)72 (47.4)
Valve with pressure plate, n (%)67 (45.6)80 (52.6)
Right hand, n (%)104 (70.7)115 (75.7)0.3621
Left hand, n (%)43 (29.3)37 (24.3)
Puncture attempts, median (IQR)1 (1-1)1 (1-1)0.3542
Puncture duration (min), median (IQR)2.25 (1.42-3.3)2.22 (1.44-3.37)0.6602
Procedure time (min), median (IQR) 13 (8.4-27.3)13.8 (9.2-26.9)0.4482
Fluoro time (min), median (IQR) 3.1 (1.3-9.1)3.4 (1.4-7.7)0.6632
Sheath, n (%)0.2573
5F74 (50.3)70 (46.1)
6F73 (49.7)79 (52.0)
7F0 (0.0)3 (2.0)
Patent hemostasis, n (%)94 (68.1)125 (82.2)0.0051
Table 3 Coronary angiography complications between two hemostatic methods
Coronary angiography complications
Control group (Conventional Hemostasis)
Oximetry – plethysmography group
P value
Spasm28 (19.0)15 (9.9)0.0241
Vagotonia24 (16.3)23 (15.1)0.7771
Hematoma25 (17.0)15 (9.9)0.0701
Hematoma diameter, median value (IQR)0 (0 - 3)0 (0 - 3)0.4622
Bleeding7 (4.8)5 (3.3)0.5171
Edema26 (17.7)29 (19.1)0.7561
Local complication18 (12.2)24 (15.8)0.3781
Pain28 (19.0)22 (14.4)0.2891
Table 4 Patent radial artery by patient group

Control group(conventional hemostasis)
Oximetry-plethysmography group
P value3
Patent radial artery
Day 11 (n = 299)126 (85.7)137 (90.1)0.241
Day 301 (n = 206)100 (94.3)89 (89.0)0.164
Day 302 (n = 204)100 (92.6)87 (90.6)0.612
Table 5 Predictors of patent hemostasis

OR (95%CI)
Ρ value
Patent hemostasis
Age (per 1 yr increase)1.04 (1.01-1.07)0.006
Control group (reference)
Oximetry-plethysmography group 2.35 (1.34-4.13)0.003