Table 1.

Perioperative management, kidney function and dialysis status

ParameterN = 60 (perioperative interruptions)
Perioperative management 
Procedure
details 
Setting, n (%) Inpatient  26 (43.3) 
  Outpatient 34 (56.7) 
 Bleeding risk, n (%) Low/moderate 22 (36.7) 
  High 38 (63.3) 
Perioperative consultation Consultation setting, n (%) In-person 40 (66.7) 
  Virtual 20 (33.3) 
 Thrombosis medicine consultation, n (%) 28 (46.7) 
 Anesthesiology consultation, n (%) 46 (76.7) 
 Specialist providing anticoagulation management advice, n (%) Thrombosis 28 (46.7) 
  Anesthesiology 32 (53.3) 
Perioperative
anticoagulation 
Therapeutic bridging anticoagulation, n (%) 2 (3.3) 
 Prophylactic LMWH, n (%) Preoperative 1 (1.7) 
  Postoperative 7 (11.7) 
 Prophylactic UFH, n (%) Preoperative 2 (3.3) 
  Postoperative 4 (6.7) 
 Prophylactic LMWH/UFH duration (d), median (IQR) Preoperative 2 (1.3-3.5) 
  Postoperative 3 (1.5-5) 
 Alternative postoperative antithrombotic
regimen implemented, n (%) 
5 (8.3) 
 Apixaban dose reduction recommended
during perioperative consultation, n (%) 
7 (11.7) 
Kidney function and dialysis status 
Documented CKD or kidney failure§, n (%) 50 (83.3) 
Creatinine|| (umol/L), median (IQR) 197 (136-290) 
Creatinine clearance||, (mL/min), median (IQR) 24 (19-27) 
Dialysis anticipated within 6 months, n (%) 11 (18.3) 
Dialysis#, n (%) 5 (8.3) 
ParameterN = 60 (perioperative interruptions)
Perioperative management 
Procedure
details 
Setting, n (%) Inpatient  26 (43.3) 
  Outpatient 34 (56.7) 
 Bleeding risk, n (%) Low/moderate 22 (36.7) 
  High 38 (63.3) 
Perioperative consultation Consultation setting, n (%) In-person 40 (66.7) 
  Virtual 20 (33.3) 
 Thrombosis medicine consultation, n (%) 28 (46.7) 
 Anesthesiology consultation, n (%) 46 (76.7) 
 Specialist providing anticoagulation management advice, n (%) Thrombosis 28 (46.7) 
  Anesthesiology 32 (53.3) 
Perioperative
anticoagulation 
Therapeutic bridging anticoagulation, n (%) 2 (3.3) 
 Prophylactic LMWH, n (%) Preoperative 1 (1.7) 
  Postoperative 7 (11.7) 
 Prophylactic UFH, n (%) Preoperative 2 (3.3) 
  Postoperative 4 (6.7) 
 Prophylactic LMWH/UFH duration (d), median (IQR) Preoperative 2 (1.3-3.5) 
  Postoperative 3 (1.5-5) 
 Alternative postoperative antithrombotic
regimen implemented, n (%) 
5 (8.3) 
 Apixaban dose reduction recommended
during perioperative consultation, n (%) 
7 (11.7) 
Kidney function and dialysis status 
Documented CKD or kidney failure§, n (%) 50 (83.3) 
Creatinine|| (umol/L), median (IQR) 197 (136-290) 
Creatinine clearance||, (mL/min), median (IQR) 24 (19-27) 
Dialysis anticipated within 6 months, n (%) 11 (18.3) 
Dialysis#, n (%) 5 (8.3) 

LMWH, low-molecular-weight-heparin; UFH, unfractionated heparin.

A procedure was designated as occurring on an inpatient basis when a patient was admitted to hospital for at least an overnight stay.

According to ISTH Perioperative and Critical Care Scientific and Standardization Committee Procedural/Surgical Bleed Risk stratification.

Two patients were maintained on long term prophylactic UFH, 1 was switched to warfarin, 1 was switched to edoxaban 30 mg once daily, and 1 patient had their apixaban discontinued and was replaced with aspirin 81 mg once daily.

§

Documented diagnosis of CKD or kidney failure within 6 months preceding the perioperative encounter in question. Specific nephrology diagnoses included polycystic kidney disease (n = 5), ischemic nephropathy (n = 5), diabetic nephropathy (n = 4), focal segmental glomerulonephritis (n = 3), C3 glomerulonephritis (n = 2), IgA nephropathy (n = 1) and amyloidosis (n = 1).

||

Excluding patients undergoing dialysis (n = 55). Creatinine conversion to mg/dL = μmol per liter/88.4.

Creatinine clearance estimated using Cockcroft-Gault formula.

#

Three patients were receiving intermittent hemodialysis and 2 were receiving peritoneal dialysis.

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