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Table 2 Participants characteristics

From: Safety of low-molecular-weight heparin compared to unfractionated heparin in hemodialysis: a systematic review and meta-analysis

Study

Mean age + SD (years)

Age range (years)

Male/Female

(n/n)

Dialysis duration and frequency

Inclusion criteria

Exclusion criteria

Cross-over with randomization

 Cianciolo et al.

63.3 ± 7.2

42–72

21/19

4 h 3×/wk

chronic HD, age 18+, stable, AVF

gastrointestinal bleeding, acute cardiovascular event 3 months before, malignancy, coagulation disorders, DVT, immunosupressive therapy, acute vasculitis, liver disease, active infection, diabetes, enrolled in other clinical trial

 Klejna et al.

68.2

44–82

11/10

4–5 h 3×/wk

Chronic HD

HIV, Hepatitis B, Hepatitis C, VTE, gastrointestinal bleeding, coagulation disorders

 Lord et al.

66.6 ± 14.8

NS

17/15

4 h 3×/wk

Chronic HD

Patients with catheters, with bleeding diathesis in last 3 months, with thrombocytopenia, hepatic failure, oral anticoagulation (but not antiplatelets)

 Saltissi et al.

NS

22–85

17/19

3–5 h 3×/wk

Chronic HD

bleeding disorders, anticoagulation therapy (warfarin, aspirin)

 Stefoni et al.

63.7 ± 7

NS

39/15

4 h 3×/wk

Chronic HD for at least 12 months

active gastrointestinal bleeding, myeloproliferative disorders, malignant diseases, hereditary deficiency of coagulation factors, LAC phenomenon, antiphospholipid syndrome

Cross-over without randomization

 Al-Saran et al.

46.83 ± 14.63

NS

17/6

3–4 h 3×/wk

at least 6 months on HD prior to study

bleeding disorders, anemia with hemoglobin levels less than 10 g/dL, recent trauma, surgery, infectious disease or hemorrhagic disorder (< 1 month) in addition to those receiving oral or other forms of anticoagulant therapy (e.g. warfarin, aspirin), or drugs that could affect heparin activity (e.g. tetracyclines, digitalis, and antihistamines)

 Bambauer et al.

60

NS

12/15

NS

Chronic HD

NS

 Bramham et al.

61 ± 15

NS

65/45

3–4 h 3×/wk

Chonic HD on monitoring shift

Renal transplant, transferred to satellite unit, switched to PD, on warfarin

 Deuber et al. (part 1)

53 ± 7

47–65

NS

4 h 3×/wk

chronic HD for at least 18 months

NS

Deuber et al. (part 2)

50 ± 18

20–67

NS

4 h 3×/wk

chronic HD for at least 18 months

NS

 Kronenberg et al.

44.7 ± 16.8

NS

13/11

3.5–5 h 3×/wk

in pre-dialysis

diabetes, bleeding disorders, oral anticoagulants, lipid lowering drugs

 Lai et al.

42.2 ± 5.2

24–60

25/15

10–16 h/wk

Chronic HD

diabetes, primary hyperlipidemia

 Leu et al.

57.8 ± 9.8

NS

7/13

4 h 3×/wk

Chronic HD at least 6 months

pts with lipid lowering drugs except non-diabetic pts. under lovastatin for >6 months, known hemorrhagic diathesis, low platelet count, liver insufficiency, hypersensitivity to heparin

 Schmitt et al.

58.6

37–72

13/9

4–5.8 h

chronic HD, cholesterol >200 mg/dL

diabetes, concomittant drug treatment (lipid lowering drugs, COX inhibitors)

 Yang et al. (part 1)

44 ± 15

NS

7/3

3×/wk

chronic HD, non diabetic

NS

 Yang et al. (part 2)

57 ± 6.4

NS

7/3

3×/wk

chronic HD with diabetes type II

NS

Parallel with randomization

 Elisaf et al.

NS

15–61

NS

4 h 3×/wk

chronic HD

diabetes, hyperlipidemia (primary or secondary)

 Nurmohamed et al.

NS

NS

NS

4–6 h 2-3×/wk

chronic HD

NS

 Schrader et al.

54.0 ± 15.2 (LMWH)

51.6 ± 17.9 (UFH)

NS

21/14 (LMWH)

19/16 (UFH)

NS

pre-HD requiring HD, not on heparin in prior 3 months

bleeding disorders, needed antiplatelets or anticoagulants

  1. NS not specified, HD hemodialysis, PD peritoneal dialysis, hrs hours, wk. week, DVT deep venous thrombosis, VTE venous thromboembolism, AVF arteriovenous fistula