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Table 3 Evidence table for non-bridging studies

From: Perioperative management of antiplatelet therapy in patients undergoing non-cardiac surgery following coronary stent placement: a systematic review

Author, year

Study design

Setting

Sample size

Average age

% Female

Operations included

Stent types included and average time since implantation

Antiplatelet strategy

30-day MACE rate

Bleeding Rate

Preoperative

Perioperative

Postoperative

Randomized trials

 Chu, 2016 [18] RCT Multi-Center Academic USA

43 procedures, 39 patients

68 years old

37%

Abdominal

Other

Not specified

Dual (C/A) (32/43)

Single (clopidogrel) (11/43)

Continued clopidogrel (22/43)

Held all (21/43)

Not specified

Clopidogrel: 0% (0/22)

Held: 0% (0/21)

Clopidogrel: 4.5% (1/22)

Held: 4.8% (1/21)1

Observational studies

 Assali, 2009 [16] Retrospective Single Center Academic Israel

78

66 years old

20.5%

Abdominal

Neuro

Orthopedic

Vascular

Other

DES

468 days ± 223

Unclear

Dual (C/A) (17/78)

Single (clopidogrel or ASA) (51/78)

None (10/78)

Discretion of the surgeon

Dual: 11.8% (2/17)

Single: 3.9% (2/51)

None: 20% (2/10)

Dual: 17.6% (3/17)

Single: 13.7% (7/51)

None: 30% (3/10)2

 Bolad, 2011 [17] Retrospective Single Center Veterans Affairs USA

220

66 years old

1.4%

Abdominal

Endoscopy

Ophthalmology

Orthopedic

Vascular

BMS, DES

BMS: 22 months ± 17.3

DES: 18.2 months ± 12.6

Unclear

Dual (ASA + P2Y12) (23/220)

Single (ASA) (41/220)

Single (P2Y12) (5/220)

None (151/220)

Not specified

Dual: 4.3% (1/23)

ASA: 12.2% (5/41)

P2Y12: 0% (0/5)

None: 6.6% (10/151)

Not Specified

 Brotman, 2007 [26] Retrospective Single Center Academic USA

114

71 years old

34.3%

Abdominal

Ophthalmology

Orthopedic

Vascular

Other

BMS, DES

236 days (125–354)

Dual (C/A) (114/114)

Continued dual (24/114)

Continued ASA (2/114)

Held all (88/114)

Not specified

Dual: 0% (0/24)

ASA: 0% (0/2)

Held: 2.3% (2/88)

Dual: 0% (0/24)

ASA: 0% (0/2)

Held: 1.1% (1/88)3

 Cerfolio, 2010 [28] Prospective Single Center Academic USA

165 total

64 w/ stent

For entire sample:

67 years old

25%

Other

BMS, DES

Not specified

Dual (C/A) (14/33)

Single (clopidogrel) (19/33)

Single (“other”) (51/132)

None (81/132)

Continued dual (14/33)

Continued clopidogrel (19/33)

NA

4.8% (1/21)

9.5% (2/21)4, 5

 Choi, 2010 [25] Prospective Single Center Academic Korea

27

68 years old

29.6%

Not Specified

DES

97 days ± 87

Dual (C/A) (27/27)

Held all (27/27)

Resumed when safe (median 6.5 days)

11.1% (3/27)4

14.8% (4/27)4,6

 Egholm, 2016 [15] Retrospective Case-control Multicenter Mixed Denmark

MACE Cohort:

109

73 years old

45.5%

Endoscopy

DES

Cases: 132 days (33–248)

Controls: 125 days (48–224)

ASA (91%)

P2Y12 (97%)

DAPT—unclear

DAPT (84/109)

Single (ASA) (8/109)

Single (P2Y12) (13/109)

None (4/109)

9% / 14% resumed ASA/P2Y12 within 7 days

None vs. DAPT: OR 3.46 (CI 0.49–24.71)

SAPT vs. DAPT: OR 0.65 (CI 0.17–2.47)

NA

Bleeding cohort:

279

71 years old

24%

DES

Cases: 114 days (52–224)

Controls: 166 days (70–267)

ASA (92%)

P2Y12 (94%)

DAPT—unclear

DAPT (217/279)

Single (ASA) (24/279)

Single (P2Y12) (23/279)

None (15/279)

15% / 20% resumed ASA/P2Y12 within 7 days

NA

0 Events

 Hawn, 2013 [1] Retrospective Case-control Subset Multicenter Veterans Affairs USA

41,989 total

568 in sub-sample

For entire sample:

80.6% ≥ 60 years old

1.6% Female

Abdominal

Endoscopy

Neuro

Ophthalmology

Orthopedic

Vascular

Other

BMS, DES

For entire sample:

5% < 6 weeks

21% 6 weeks–6 months

26% 6–12 months

48% 12–24 months

Dual (C/A) (328/568)

Continued dual (216/328)

Continued ASA (36/328)

Continued clopidogrel (14/328)

All therapy held (62/328)

Not specified

All odds ratios not statistically different from 1.0

Not Specified

Single (ASA) (173/568)

Continued ASA (143/173)

Held ASA (30/173)

Single (clopidogrel) (33/568)

Continued clopidogrel (22/33)

Held clopidogrel (11/33)

None (34/568)

None (34/34)

 Tanaka, 2014 [27] Retrospective Single Center Academic Japan

111

71 years old

13.5%

Endoscopy

Other

DES

674 days ± 393

Dual (ASA + P2Y12) (93/111)

Single (ASA) (12/111)

Coumadin (9/111)

Held all (111/111)

Resumed when safe (mean 2 days)

Combined event rate: 2.7% (3/111)7

Not Specified

 Yamamoto, 2014 [32] Retrospective Single Center Academic Japan

151

70 years old

18%

Abdominal

Neuro

Orthopedic

Vascular

Other

BMS, DES

Not specified

Dual (ASA + P2Y12) (114/151)

Continued dual (63/151)

“Dual APT Group” (63/151)

 

Not specified

0%4

Dual APT group: 9.5% (6/63)

Single APT -Heparin: 2.9% (2/68)

Single APT + Heparin: 0% (0/20)4,8

Held P2Y12 (51/151)

“Single APT Group” (88/151)

(+) Heparin (20/88)

Single (ASA) (37/151)

Continued ASA (37/151)

(−) Heparin (68/88)

  1. APT antiplatelet therapy, ASA aspirin, BMS bare metal stent, C/A clopidogrel/aspirin, DES drug eluting stent, MACE major adverse cardiac event, NA not applicable, Neuro neurosurgical procedures, OR odds ratio, RCT randomized controlled trial
  2. 1Bleeding-related rehospitalization, reoperation, transfusion, or mortality
  3. 2Hb drop > 2 g/dL
  4. 3Bleeding requiring return to OR or bleeding in a critical location (intracranial, retroperitoneal)
  5. 4Follow-up period not specified
  6. 5Bleeding requiring return to OR
  7. 6Bleeding requiring transfusion or return to OR
  8. 7Follow-up period ≤ 7 days
  9. 8Bleeding requiring transfusion, intracranial bleeding, Hb drop > 5 g/dL, and bleeding causing death within 7 days