Table 2 Predictive performance of PPV change after TVC in low tidal mechanically ventilated patients

Myatra2017 [14]*

△PPV

16

0

1

14

3.5

0.94

1.00

0.99 (0.98, 1.00)

0.69

△PPV%

16

0

1

14

48

0.94

1.00

0.97 (0.92, 1.00)

Yonis 2017 [15]

△PPV%

9

15

0

10

29

1.00 (0.66, 1.00)

0.40 (0.1, 0.7)

0.59 (0.31, 0.88)

0.49 (0.21, 0.77)

Jun2019 [16]*

△PPV

24

2

2

14

1

0.92 (0.73, 0.99)

0.86 (0.57, 0.98)

0.95 (0.83, 0.99)

0.69 (0.52, 0.83)

△PPV%

24

4

5

14

25

0.83 ((0.63, 0.95)

0.79 (0.49, 0.95)

0.87 (0.72, 0.96)

Messina2019 [17]

△PPV%

21

5

1

19

13.3

0.95 (0.74, 1.00)

0.76 (0.53, 0.92)

0.94 (0.82, 0.99)

0.68 (0.50, 0.85)

Messina2020 [18]

△PPV%

19

1

1

21

12.2

0.95

0.95

0.96 (0.87, 1.00)

0.69

Elsayed2021 [19]

△PPV

16

2

1

30

3.5

0.94

0.94

0.96

0.85

Taccheri2021 [20]*

△PPV

15

0

1

15

1

0.93 (0.68, 1.00)

1.00 (0.78, 1.00)

0.98 ± 0.02

0.66

△PPV%

15

2

1

15

20

0.93 (0.68, 1)

0.87 (0.59, 0.98)

0.94 ± 0.04

Hamzaoui2021 [21]

△PPV

22

10

10

32

2

0.69

0.76

0.73 (0.60, 0.84)

0.61 (0.48, 0.75)

Shi2022 [22]

△PPV

42

7

1

42

3.5

0.98 (0.89, 0.99)

0.86 (0.75, 0.79)

0.94 (0.88, 0.99)

0.85 (0.77, 0.92)

Xu2022 [23]

△PPV

31

9

14

45

2

0.84

0.84

0.90 (0.81, 0.96)

0.69 (0.57, 0.79)