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Table 4 Relationship between diaphragm movements and prediction of postoperative FEV 1

From: Diaphragm motion and lung function prediction in patients operated for lung cancer – a pilot study on 27 patients

 

Pearson correlation

p

t-test for equation of means

t

df

Sig. (2-tailed)

A1 ipsilateral (Rtg)

- 0.15

0.46

0.70

23

0.48

A1 ipsilateral (US)

0.028

0.89

0.12

23

0.90

ΔA ipsilateral (Rtg)

- 0.15/0.97*

0.71/0.006*

- 0.90

6

0.40

ΔA ipsilateral (US)

0.19

0.46

- 0.84

14

0.41

Δa ipsilateral inspirium

- 0.09

0.72

0.33

16

0.74

Δa ipsilateral inspiriumn (%)

- 0.16

0.52

0.44

16

0.66

A1(%)

- 0.23/ -0.84#/ -0.91§

0.27/ 0.03#/ 0.03§

0.90

22

0.37

A2(%)

- 0.016

0.96

- 1.56

7

0.16

height

0.43

0.02

   

weight

0.24

0.23

   
  1. A1 ipsilateral (Rtg): preoperative amplitude of the ipsilateral diaphragm measured radiographically; A1 ipsilateral (US): the same amplitude measured ultrasonographically; ΔA ipsilateral (Rtg): difference between the preoperative and postoperative amplitudes measured radiographically; ΔA ipsilateral (US): the same difference measured ultrasonographically; Δa ipsilateral inspirium.: difference between preoperative and postoperative value of the apex-diaphragm dome distance in deep inspiration; Δa ipsilateral insp (%):Δa ipsilateral insp expressed as a% of the apex-diaphragm dome distance in deep inspiration; A1(%): the preoperative ipsilateral diaphragm amplitude as a percentage of the preoperative apex-diaphragm dome distance in inspiration; A2(%): the postoperative ipsilateral diaphragm amplitude as a percentage of the preoperative apex-diaphragm dome distance in inspiration; *: right sided tumours; #: left sided tumours; §: cut-off value of 550 ml for the differences between ppo FEV1 and actual FEV1.
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Journal of Cardiothoracic Surgery

ISSN: 1749-8090

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