Research Article

Prognostic Value of the Residual SYNTAX Score on In-Hospital and Follow-Up Clinical Outcomes in ST Elevation Myocardial Infarction Patients Undergoing Percutaneous Coronary Interventions

Table 3

Long-term demographic, clinical, laboratory, and procedural characteristics, medication, and scores of patients.

ParametersAll patients (n : 478)RSS = 0 (n : 130)RSS < 7 (n : 185)≥7 (n : 163) value

Demographic parameters
Age (year)62 ± 1358 ± 12a61 ± 12a65 ± 13b<0.001
Male gender (n%)371 (77.6)101 (77.7)146 (78.9)124 (76.1)0.817

Clinical history
HT (n%)285 (59.6)67 (51.5)a109 (58.9)a,b109 (66.9)b0.028
DM (n%)216 (45.2)45 (34.6)a84 (45.4)a,b87 (53.4)b0.006
HL (n%)282 (59)72 (55.4)114 (61.6)96 (58.9)0.541
CAD (n%)104 (21.8)22 (16.9)37 (20)45 (27.6)0.067
Smoking (n%)186 (38.9)55 (42.3)70 (37.8)61 (37.4)0.646

Laboratory parameters
CreCl (ml/min)89.05 (72.6–100)92.32 (82–101)a91 (79–101.03)a83 (67–95.8)b<0.001
HbA1c6 (5.6–7)5.9 (5.5–6.8)a6 (5.6–6.8)a,b6.2 (5.7–7.4)b0.049
Hb (g/dl)14.17 ± 4.9214.05 ± 1.9814.13 ± 1.9114.31 ± 80.899
WBC × 10310.73 (8.43–13)10.04 (8–12.78)10.87 (8.25–12.73)10.9 (8.74–13.39)0.157
PLT × 103253.5 (208–304)262 (213–306)247 (207–292)247 (205–308)0.397
CRP (mg/dl)1.8 (0.61–6)1.38 (0.5–3.58)a1.5 (0.57–4.93)a3.15 (0.78–11.1)b<0.001
Peak Trop-T (ng/ml)50000 (14.59–50000)34.37 (8.4–50000)a48.66 (13.3–50000)a50000 (31.9–50000)b<0.001
>50000 (n%)244 (51)50 (38.5)a91 (49.2)a103 (63.2)b<0.001
LVEF58 (50–60)60 (55–65)a60 (50–61)a52 (45–60)b<0.001
Grace Score105 (85–124)94.5 (80–109)a99 (81–121)a120 (103–138)b<0.001

Angiographic characteristic
One vessel (n%)149 (31.2)87 (66.9)a51 (27.6)b11 (6.7)c<0.001
Two vessels (n%)202 (42.3)35 (26.9)a105 (56.8)b62 (38)a<0.001
Three vessels (n%)149 (31.2)7 (5.4)a30 (16.2)b91 (55.8)c<0.001
IRA-LAD (n%)217 (45.4)65 (50)a95 (51.4)a57 (35)b0.004
IRA-CX (n%)90 (18.8)25 (19.2)34 (18.4)31 (19)0.979
IRA-RCA (n%)158 (33.1)35 (26.9)a53 (28.6)a70 (42.9)b0.004
BMS (n%)119 (24.9)34 (26.2)44 (23.8)41 (25.2)0888
DES (n%)41 (25.2)96 (73.8)141 (76.2)122 (74.8)0888
Number of stents1 (1-1)1 (1-1)a1 (1-1)a,b1 (1-2)b0.021
1 (n%)380 (795)112 (86.2)a149 (80.5)a,b119 (73)b0.020
≥1 (n%)98 (20.5)18 (13.8)a36 (19.5)a,b44 (27)b0.020
Stent length (mm)22 (16–30)19.5 (15–26)a24 (17–30)a24 (18–34)b0.002
Stent diameter (mm)3 (2.75–3)3 (2.75–3.5)3 (2.75–3)3 (2.75–3)0.262
SS16 (10–22.5)9.5 (7–15)a15 (10–20)b23.5 (18–29)c<0.001
RSS4 (0–8.5)0 (0-0)a3.5 (2–5)b12 (8–15.5)c<0.001

Medication
Beta-blocker (n%)448 (93.7)123 (94.6)174 (94.1)151 (92.6)0.765
ASA (n%)476 (99.6)129 (99.2)185 (100)162 (99.4)NA
Clopidogrel (n%)139 (29.1)26 (20)a61 (33)b52 (31.9)b0.028
Prasugrel (n%)15 (3.1)2 (1.5)7 (3.8)6 (3.7)0.471
Ticagrelor (n%)319 (66.7)101 (77.7)a115 (62.2)b103 (63.2)b0.008
ACEI-ARB (n%)396 (82.8)105 (80.8)152 (82.2)139 (85.3)0.568
Statin (n%)464 (97.1)126 (96.9)181 (97.8)157 (96.3)0.699
MRA (n%)31 (6.5)6 (4.6)10 (5.4)15 (9.2)0.213
Furosemide (n%)50 (10.5)9 (6.9)a12 (6.5)a29 (17.8)b0.001
Follow-up (months)29 (18–35)28 (12–34)28 (14–38)30 (23–34)0.055

Data are presented as mean ± SD, median (0.250.75 percentiles), and n (%). ANOVA, Kruskal–Wallis test, and Pearson chi-square test were used and different letters show that there is a statistically significant difference. ACEI-ARB: angiotensin converting enzyme inhibitors-angiotensin receptor blockers, ASA: acetylsalicylic acid, BMS: bare metal stent, CAD: coronary artery disease, CreCl: creatinine clearance, CRP: C-reactive protein, CX: circumflex, DES: drug eluting stent, DM: diabetes mellitus, Hb: hemoglobin, HbA1C: hemoglobin A1C, HF: heart failure, HL: hyperlipidemia, HT: hypertension, IRA: infarct related artery, IV: intravenous, LAD: left anterior descending, LVEF: left ventricular ejection fraction, MRA: mineralocorticoid receptor antagonist, MI: myocardial infarction, NA: not applicable, PLT: platelet, RCA: right coronary artery, RSS: residual SYNTAX score, SS: SYNTAX score, Trop: troponin, and WBC: white blood cell.