Retrospective Study
Copyright ©The Author(s) 2021.
World J Clin Cases. Mar 6, 2021; 9(7): 1543-1553
Published online Mar 6, 2021. doi: 10.12998/wjcc.v9.i7.1543
Table 1 The characteristics of the primary and secondary bleeding groups were compared with those of the nonbleeding group separately
VariablesNon-bleeding group, n = 4923
Primary bleeding group, n = 31
Secondary bleeding group, n = 61


n
χ2
P value
n
χ2
P value
Sex
Female1543100.0120.913190.010.974
Male33802142
Age in yr
≤ 62763180.0470.8281915.2420.000a
> 621601342
Time of onset in yr
≤ 11759100.1620.688144.2930.038a
> 131642147
Diagnosis
Chronic tonsillitis120080.0340.853191.4960.221
Tonsil hypertrophy37232342
Tonsillectomy
Monopolar electrical tonsillectomy250095.8300.016a243.1540.076
Coblation tonsillectomy24232237
Surgeon
Junior surgeon 1905196.6210.010a250.1330.715
Senior surgeon30181236
Time when the surgery started
Before noon2010100.9370.333230.2430.622
After noon29132138
Monthly average air temperature
≤ 20 °C2315150.0230.880241.4270.232
> 20 °C26081637
Table 2 Grade of post-tonsillectomy hemorrhage
Grade
Treatment
Primary hemorrhage, n
Secondary hemorrhage, n
ISpontaneous cessation19
IIInfiltration anesthesia729
IIITreatment under general anesthesia2223
IVLigature of the external carotid artery110
VLethal outcome00
Table 3 Position of post-tonsillectomy hemorrhage confirmed in hemostasia surgery

Position
Number
Primary hemorrhage (n = 23)Upper pole4
Middle portion8
Lower pole14
Palatoglossal arch2
Palatopharyngeal arch1
Secondary hemorrhage (n = 23)Upper pole5
Middle portion9
Lower pole9
Palatoglossal arch3
Palatopharyngeal arch1