Research Article

Usefulness of Serum Cardiac Biomarkers for Predicting In-Hospital Cardiac Complications in Acute Hip Fracture: A Prospective Cohort in 20 High Surgical Risk patients with Age over 55 Years

Table 4

The relationship between patients' characteristics and in-hospital complications.


Cardiac complicationNon-cardiac related complication
Yes (n=5)No (n=15)p-valueRR (95% C.I.)Yes (n=7)No (n=13)p-valueRR (95% C.I.)

Age, year84 ± 377 ± 90.08378 ± 1079 ± 70.803
Male gender1 (20)5 (33)10.58 (0.08-4.19)2 (29)4 (31)10.93 (0.22-3.87)
BMI, kg/m220.1 ± 4.321.4 ± 3.60.49921.7 ± 4.620.8 ± 3.30.615
Intertrochanteric fracture3 (60)8 (53)11.23 (0.26-5.82)4 (57)7 (54)11.06 (0.47-2.40)
Injury on right side3 (60)6 (40)0.6171.83 (0.39-8.70)3 (43)6 (46)10.93 (0.33-2.62)
Time from fracture to surgery, day2.8 ± 1.92.1 ± 1.30.3523.4 ± 1.91.6 ± 0.70.005
ASA grade 44 (80)1 (7)0.00512 (1.72-83.8)4 (57)1 (8)0.0317.43 (1.02-54.3)
Comorbid disease
 DM1 (20)3 (20)1.0001.00 (0.15-6.67)1 (14)3 (23)1.0000.62 (0.08-4.90)
 Hypertension3 (60)11 (73)0.6130.64 (0.14-2.91)4 (57)10 (77)0.6130.73 (0.37-1.51)
 IHD2 (40)2 (13)0.2492.67 (0.65-10.97)1 (14)3 (23)1.0000.62 (0.08-4.90)
 AF2 (40)1 (7)0.1403.78 (1.03-13.89)1 (14)2 (15)1.0000.93 (0.10-8.53)
  COPD1 (20)3 (20)1.0001.00 (0.15-6.67)1 (14)3 (23)1.0000.62 (0.08-4.90)
 Stroke0 (0)4 (27)0.5300.31 (0.02-4.68)1 (14)3 (23)1.0000.62 (0.08-4.90)
 Malignancy1 (20)1 (7)0.4472.25 (0.44-11.52)1 (14)1 (8)1.0001.86 (0.14-25.4)
CCI5.6 ± 1.34.2 ± 1.30.0564.3 ± 1.64.7 ± 1.40.559
Hemoglobin, g/dL8.9 ± 1.811.4 ± 1.70.01410.8 ± 2.610.7 ± 1.70.955
GFR, mL/minute/1.73m246.3 ± 19.371.7 ± 22.80.03955.8 ± 29.770.5 ± 20.30.204
Albumin, g/L29.3 ± 4.033.3 ± 3.90.05932.6 ± 3.332.2 ± 4.80.838
Intraoperative blood loss, mL450 ± 499228 ± 1540.3831.64 (0.53-5.09)200 (150, 338)300 (50, 363)0.968
PLOS, day10 (3, 15)4 (3, 5)0.1727 (4, 10)3 (3, 5)0.034
Positive hsTnI with normal cut-off reference level
 On admission4 (80)1 (7)0.00512.0 (1.7-83.8)2 (29)3 (23)1.0001.24 (0.27-5.75)
  Postoperative 24 hour4 (80)2 (13)0.0146.0 (1.54-23.4)2 (29)4 (31)1.0000.93 (0.22-3.87)
Positive NT-proBNP with cut-off level as 821 pg/mL
 On admission3 (60)3 (20)0.1313.0 (0.87-10.36)1 (14)5 (38)0.3540.37 (0.05-2.59)
 Postoperative 24 hour4 (80)4 (27)0.1093.0 (1.16-7.73)2 (29)6 (46)0.6420.62 (0.17-2.29)

BMI: body mass index; ASA: American Society of Anesthesiologist; DM: diabetes milletus; IHD: ischemic heart disease; AF: atrial fibrillation.
COPD: chronic obstructive pulmonary disease; CCI: Charlson comorbidity index; PLOS: postoperative length of stay; GFR: glomerular infiltration rate.
: values presented as mean ± standard deviation. ◆: values presented as number of cases (percentage); ■: values presented as median (interquartile range).
: significant difference with p<0.05