Randomized comparative study of left versus right radial approach in the setting of primary percutaneous coronary intervention for ST-elevation myocardial infarction

Figures & data

Table 1 Baseline characteristics of the study population

Variable	Right radial approach (n=100)	Left radial approach (n=100)	P-value
Age (years)	59.6±12.3	60.9±10.9	0.41
Male	79 (79%)	82 (82%)	0.59
Height (cm)	167.9±6.2	167.9±7.4	0.98
Weight (kg)	72.8±10.8	71.1±10.9	0.28
BMI (kg/m^2)	25.9±3.1	25.4±2.8	0.22
Creatinine (μmmol/L)	71.8±19.9	67.6±14.8	0.10
Peak CK-MB (IU/L)	225.4±189.6	179.5±170.3	0.07
Peak cTnI (ng/mL)	16.9±12.6	14.7±11.8	0.19
LVEF (%)	56.9±10.3	57.3±8.7	0.76
Hypertension	64 (64%)	55 (55%)	0.20
Diabetes mellitus	22 (22%)	31 (31%)	0.15
Dyslipidemia	16 (16%)	10 (10%)	0.21
Current smoking	60 (60%)	56 (56%)	0.57
Anterior MI	52 (52%)	54 (54%)	0.78
Inferior MI	48 (48%)	46 (46%)	0.78
Killip class			0.29
Killip 1	72 (72%)	69 (69%)
Killip 2	26 (26%)	31 (31%)
Killip 3	2 (2%)	0 (0%)
Killip 4*	0 (0%)	0 (0%)

Notes: Data are expressed as the mean ± SD or number (%).

* Excluded by study design.

Abbreviations: n, number; BMI, body mass index; CK-MB, creatinine kinase MB isoenzyme; cTnI, cardiac troponin I; LVEF, left ventricular ejection fraction; MI, myocardial infarction; SD, standard deviation.

Figure 1 Flow diagram of the study.

Notes: Comparison between the left and right radial approach for primary coronary intervention in patients with ST-elevation myocardial infarction.
Abbreviation: n, number.

Table 2 Angiographic and interventional characteristics of the study population

Variable	Right radial approach (n=94)	Left radial approach (n=98)	P-value
Procedural success rate	94/100 (94%)	98/100 (98%)	0.28
Infarct-related artery			0.84
Left anterior descending	51 (54%)	54 (55%)
Left circumflex	10 (11%)	8 (8%)
Right coronary artery	33 (35%)	36 (37%)
Initial TIMI flow (0–1/2/3)	78/12/4	78/11/9	0.39
Guiding catheter			0.42
Judkins	82 (87%)	91 (93%)
Amplatz	4 (4%)	2 (2%)
Extra backup	8 (9%)	5 (5%)
Thrombus aspiration	26 (28%)	22 (23%)	0.41
GP IIb/IIIa inhibitors	73 (78%)	76 (78%)	0.99
Final TIMI 3 flow	90 (96%)	95 (97%)	0.72
Contrast volume (mL)	128.8±17.2	125.8±19.6	0.31
Number of stents	1.1±0.4	1.2±0.4	0.22

Note: Data are expressed as the mean ± SD or number (%).

Abbreviations: n, number; TIMI, thrombolysis in myocardial infarction; GP, glycoprotein; SD, standard deviation.

Table 3 Procedural durations and radiation exposure of the study population

Variable	Right radial approach (n=94)	Left radial approach (n=98)	P-value
Needle-to-balloon time (minutes)	18.0±6.5	16.0±4.8	0.02
Total CAK (mGy)	720±359	715±478	0.92
Total CAK DAP (Gy cm^2)	65.3±49.1	51.9±30.4	0.04
Fluoroscopy time (minutes)	8.8±3.5	7.4±3.4	0.01

Note: Data are expressed as the mean ± SD.

Abbreviations: n, number; CAK, cumulative air kerma; DAP, dose area product; SD, standard deviation.