Pressure changes in tapered and cylindrical shaped cuff after extension of head and neck: A randomized controlled trial

Table 1 Patient characteristics and intraoperative data

Characteristics	Group C (n = 26)	Group T (n = 26)
Age, yr	40.7 ± 14.5	38.1 ± 16.1
Sex, M/F	14/12	16/10
Weight, kg	59.8 ± 9.7	61.5 ± 8.1
ASA (I/II/III)	10/14/2	13/12/1
Height, cm	165.7 ± 8.6	167.2 ± 8.6
Body mass index, kg/m2	21.6 ± 1.4	21.9 ± 1.2
Duration of surgery, min	154.5 ± 45.1	148. 4 ± 55.7

Values are presented as mean ± standard deviation or number. American Society of Anesthesiologists physical status I (a normal healthy patient), II (a patient with mild systemic disease) III (a patient with severe systemic disease). Group C: Conventional nasal endotracheal tube; Group T: TaperGuard nasal endotracheal tube; ASA: American Society of Anesthesiologists physical.

Table 2 Cuff pressure and cephalad withdrawal of nasal endotracheal tube after head and neck extension from neutral position

	Group C (n = 26)	Group T (n = 26)
Cuff pressure, cm H2O	25.5 ± 0.8	28.7 ± 1.0a
Difference of cuff pressure, cm H2O	3.2 ± 0.8	6.8 ± 1.1a
Cuff pressure more than 30 cmH2O	0	3 (11.5%)
Cephalad withdrawal of tube tip, mm	15.1 ± 1.1	18.4 ± 2.2a

^aStatistically significant difference between group T and C (P < 0.001).

Values are presented as mean ± standard deviation or number (%). Group C: Conventional nasal endotracheal tube; Group T: TaperGuard nasal endotracheal tube.

Table 3 Overall incidence of airway complications during the postoperative 24 h

	Group C (n = 26)	Group T (n = 26)	P value
Sore throat	6 (23.1%)	5 (19.2%)	0.734
Hoarseness	3 (11.5%)	5 (19.2%)	0.442

Values are presented as number (%). Group C: Conventional nasal endotracheal tube; Group T: TaperGuard nasal endotracheal tube.