Factors predicting the use of the backward upward rightward pressure maneuver in thyroid surgery: a single-center retrospective cohort study

Table 1 Preoperative evaluation criteria and intubation findings of patients

Variables	BURP (+) n = 78	BURP (-) n = 56	P
Toxic multinodular goitre	8	9
Simple multinodular goitre	57	36
Thyroiditis	0	2	0.193*
Grave’s disease Malign goitre Other	2 10 1	0 6 3
Thyroid medication	12	6
Antithyroid medication	13	12	0.630*
No medication	53	38
Thyroid surgery (Yes/No)	7/71	1/55	0.191*
Thyroid goitre grade Ia	34	11
Ib II	23 21	22 23	0.014*
Dyspnea	8	6
Dysphagia Hoarseness No	6 5 58	4 10 36	0.232*
Mallampati classification I II	24 29	20 21	0.799*
III IV	22 3	13 1
Maximum mouth opening (cm)	5.31 ± 1.28	5.88 ± 1.58	0.009*
Cormack Lehane Score 2	45	56	< 0.001*
3	28	0
4	5	0
Upper lip bite test 1	38	26	0.595*
2	37	27
3	3	2
Ease of intubation (VRS:0 Easy, VRS: 100 Difficult)	45.00 ± 24.86	12.58 ± 17.70	< 0.001^‡
Intubation time (sn)	22.61 ± 23.59	9.74 ± 8.44	< 0.001^‡
Number of intubation attempts	1.39 ± 0.93	1.01 ± 0.133	0.003^‡
Thyromental distance	8.20 ± 3.21	7.90 ± 1.74	0.300^‡
Sternomental distance	14.34 ± 2.38	14.34 ± 2.84	0.800^‡
Neck extension	111.65 ± 11.93	111.34 ± 15.34	0.929^‡

BURP: backward, upward, and rightward pressure, VRS: visual rating scale, * chi-square test, ^‡Mann–Whitney U test

ISSN: 1471-2482