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Table 2 Basic characteristics of case series/case reports included

From: Double-carbapenem therapy in the treatment of multidrug resistant Gram-negative bacterial infections: a systematic review and meta-analysis

Author/

Year

Region

Design

Sample size

Sex

Agea

(years)

Infection

Organism

DCT

Combined antibiotics

Antimicrobial susceptibility test (μg/ml)

Treatment durationa

(days)

Follow-up timea

(days)

Outcomes

Ceccarelli, 2013 [51]

Italy

case report

1

male

65

SBSI, VAP

combined

MDR, KPC-III-producing KP

ETP 0.5/1 g q24h

DOR 0.25/0.5/1 g q8h

(4 h infusions)

–

ETP ≥8 R

DOR R

28

30

clinical response

microbiological response

Giamarellou, 2013 [26]

Greece

case report

3

male (1)

female (2)

54

42

44

SBSI (2), UTI (3)

PDR, KPC-II-producing KP

ETP 1 g q24h

MEM 1/2 g q8h (2)

DOR 2 g q8h (1)

–

ETP > 8 R

MEM > 16 R

DOR > 8 R

20

14

10

300

21

180

clinical response 3/3

microbiological response 3/3

Oliva, 2014 [38]

Italy

case report

3

male (3)

–

API (1), BSI (2)

PDR, CPKP

ETP 0.5/1 g q24h

MEM 1 g q12h/2 g q8h

–

ETP 128 R (1), 256 R (2)

MEM 128 R (1), 256 R (2)

21

2

24

–

clinical response 3/3

microbiological response 3/3

demised 1/3

Camargo, 2015 [52]

USA

case report

1

female

64

IAI, VAP, BSI

combined

XDR, KPC-producing KP

ETP 1 g q24h

MEM 1 g q12h

CST

ETP -

MEM -

CST 12 R

12

–

microbiological failure

emergence of colistin resistance

switched to AVC + ETP

Chua, 2015 [41]

Singapore

case report

2

male (2)

62

77

SSI (1), HAP (1)

KPC-producing KP

ETP 0.5/1 g q24h

DOR 0.5/1 g q8h

(4 h infusions)

PMB + CST

PMB

ETP 4 (1), > 32 (1)

DOR 8 (1), − (1)

PMB 1 (1), − (1)

CST -

12

10 + 7

30

13

clinical response 2/2

microbiological response 2/2

demised 2/2

Oliva, 2015 [37]

Italy

case report

1

female

75

CVCI

PDR, KPC-producing KP

ETP 1 g q24h

MEM 2 g q8h

CST

ETP 128 R

MEM 256 R

CST 32 R

21

–

clinical response

microbiological response

Tumbarello, 2015 [50]

Italy

case report

8

–

≥18

BSI

KPC-producing KP

ETP

MEM

–

ETP -

MEM -

≥2

14

demised 3/8

Alessandra, 2016 [46]

Italy

case series

15

male (10)

female (5)

60.9 ± 10.9

UTI (8), SSTI (2), EPI (2), PNA (1), MSI (2)

KPC-producing KP

ETP 1 g (1 h infusions)

MEM 2 g q8h (3 h infusions)

–

ETP > 8 R (14)

MEM > 16 R (14)

ETP, MEM > 32 R (1)

15 (7–150)

60

clinical response 12/15

microbiological response 12/15

adverse events 3/15

(nausea, hypernatremia and seizures)

demised 1/15

Cprek, 2016 [47]

USA

case series

18

male (10)

female (8)

62.5(51–67)

BSI (7), PNA (5), IAI(2), UTI (3), SSSI (1)

CRKP

ETP 1 g q24h

MEM 2 g q8h (17)

DOR 0.5 g q8h (1)

DOX, GEN

AMK, CIP

TGC + PMB

CIP + TGC

GEN + DOX

CAB > 1 R

DOX, GEN, AMK, CIP, TGC, PMB -

17 (2–72)

30

clinical response 7/18

microbiological response 11/14

adverse events 2/18

(2 seizures)

demised 5/18

Montelione, 2016 [40]

Italy

case report

1

male

62

API

XDR, CPKP

ETP 1 g q24h

MEM 2 g q8h

–

ETP 128 R

MEM 256 R

28

1095

clinical response

microbiological response

Oliva, 2016 [39]

Italy

case report

1

female

61

SSI, HAP, SBSI

combined

KPC-producing EC

ETP 0.5 g q24h (1 h infusions)

MEM 2 g q12h (3 h infusions)

–

ETP 16 R

MEM 32 R

10

–

clinical response

microbiological responsedemised

Basaranoglu,2017 [44]

Turkey

case report

3

male (2)

female (1)

3 months

8 months

3

SBSI (1), CRBSI (2)

MDR KP

ETP 0.015 g/kg q12h

MEM 0.02–0.04 g/kg q8h

CIP + TGC

AMK + TGC + CIP

CIP + AMK + CST

ETP > 8 R (1), > 32 R (2)

MEM > 6 R (1), > 32 R (2)

CIP > 2 R (1), > 4 R (2)

TGC 1 S (1), 2 S (1), > 2 R (1)

AMK 16 IR (1), > 64 R (2)

CST -

14

15

26

–

clinical response 2/3

microbiological response 3/3

Nekidy, 2017 [36]

United Arab Emirates

case report

1

female

62

SSI, UTI, PNA, BSI combined

MDR KP

ETP 1 g q24h

MEM 1 g q8h

–

ETP ≥8 R

MEM -

28 + 7, 10, 14, 28, 14

–

clinical response

microbiological response

Souli, 2017 [45]

Greece

case series

27

male (15)

female (12)

59(15–83)

BSI (13), UTI (12), VAP (1), EVDI (1)

PDR/XDR, KPC-II-producing KP

ETP 1 g q24h (1 h infusions)

MEM 2 g q8h (3 h infusions)

–

ETP > 8 IR

MEM ≥2 IR

10 (5–28)

28 (9–200)

clinical response 21/27

microbiological response 20/27

adverse events 4/27

(generalized rash, eosinophilia and 2 aseptic meningitis)

demised 8/27

Carrasco,2018 [42]

Spain

case report

1

female

36

BSI

XDR, KPC-producing KP

ETP 1 g q24h

MEM 2 g q8h (3 h infusions)

–

ETP ≥32 R

MEM ≥32 R

14

90

clinical response

microbiological response

Galvão, 2018 [43]

Brazil

case report

1

male

59

SSI, SBSI

combined

XDR, KPC-producing KP

ETP 1 g q24h

MEM 2 g q8h (4 h infusions)

AMK + LZD

+FCA

ETP ≥8 R

MEM ≥16 R

AMK 4 S

LZD -

FCA -

45

–

multiple organ failure and demised

Liang, 2018 [48]

China

case report

1

male

50

SBSI

XDR KP

ETP 1 g q24h (1 h infusions)

MEM 1 g q8h (3 h infusions)

–

ETP R

MEM R

9

–

clinical response

microbiological response

Rosa, 2018 [49]

USA

case report

2

male (1)

female (1)

57

35

UTI

NDM-harboring KP/EC

ETP 1 g q24h

MEM 1 g q12h (4 h infusions)

FOF

ETP -

MEM ≥16 R

FOF 12 S (1), 256 R (1)

14

–

clinical response 2/2

microbiological response 2/2

  1. Abbreviations: DCT double-carbapenem therapy, PNA pneumonia, HAP hospital-acquired pneumonia, VAP ventilator-associated pneumonia, BSI bloodstream infection, SBSI secondary bloodstream infection, EPI endovascular prosthesis infection, API Aortic periprosthetic infection, CVCI central venous catheter infection, CRBSI catheter-related bloodstream infection, UTI urinary tract infection, IAI intra-abdominal infection, SSTI skin and soft tissue infection, SSSI skin and skin structure infection, SSI surgical site infection, EVDI external ventricular drainage infection, MSI multiple site infection, KP Klebsiella pneumoniae, EC Escherichia coli, CRKP carbapenem-resistant K. pneumoniae, CPKP carbapenemase-producing K. pneumoniae, KPC K. pneumoniae carbapenemase, KPC-II a type II carbapenem against KPC-producers, KPC-III a type III carbapenem against KPC-producers, NDM New Delhi Metallo-beta-lactamase, MDR multidrug resistant, XDR extensively drug resistant, PDR pandrug resistant, MEM meropenem, ETP ertapenem, DOR doripenem, CAB carbapenem antibiotics, CST colistin, GEN gentamicin, TGC tigecycline, CIP ciprofloxacin, AMK amikacin, FOF fosfomycin, LZD linezolid, PMB polymyxin B, DOX doxycycline, FCA fluconazole, AVC ceftazidime/avibactam, S sensitive, I intermediate, R resistant
  2. -: not reported
  3. a. Data are expressed as mean ± standard deviation (SD), or median (range or interquartile range)