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Table 4 Results of parameters additionally examined with numerical rating scale (NRS). NRS scores 1–3 correspond to mild, scores 4–6 to moderate and scores ≥ 7 to severe symptoms. Values are expressed as the number of patients or as the total number in percent

From: Comparison of left double lumen tube and y-shaped and double-ended bronchial blocker for one lung ventilation in thoracic surgery—a randomised controlled clinical trial

Parameter of the NRS score

DLT

(n = 38)

EZB

(n = 36)

U-test

(P-value)

Sore throat n (mild/moderate/severe) (total in %)

9/0/0 (23.7%)

1/0/0

(2.8%)

0.009*

Dysphagia n (mild/moderate/severe) (total in %)

6/1/0 (18.4%)

1/2/0

(8.3%)

0.247

Cough n (mild/moderate/severe) (total in %)

11/9/0 (52.6%)

17/5/0 (61.1%)

0.916

Hoarseness n (mild/moderate/severe) (total in %)

6/9/3 (47.4%)

9/1/0

(27.8%)

0.02*

  1. *Statistically significant