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Chinese Journal of Experimental and Clinical Infectious Diseases(Electronic Edition) ›› 2021, Vol. 15 ›› Issue (03): 189-195. doi: 10.3877/cma.j.issn.1674-1358.2021.03.008

• Research Article • Previous Articles     Next Articles

Related factors influencing the length of paroxysmal phase of children with pertussis

Huimin Zhang1, Caiying Wang1, Yiwei Hao2, Honglin Yang1, Yanlan Zhang1, Lin Pang1,()   

  1. 1. Department of Pediatrics, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China; Beijing Key Laboratory of Emerging Infectious Diseases, Beijing 100015, China
    2. Medical Records Room, Beijing Ditan Hospital, Capital Medical University, Beijing 100015, China
  • Received:2020-06-20 Online:2021-06-15 Published:2021-07-30
  • Contact: Lin Pang

Abstract:

Objective

To investigate the related factors which affect the length of paroxysmal phase of children with pertussis, and to seek interventions, and provide guidance for clinical diagnosis and treatment.

Methods

Clinical data of 167 children with pertussis hospitalized in Beijing Ditan Hospital, Capital Medical University from August 2018 to December 2019 were collected, the relevant factors which might affect the length of paroxysmal phase were analyzed by single factor and multiple linear regression analysis.

Results

Among the 167 children, there were 88 boys (52.7%) and 79 girls (47.3%), with 121 children ≤ 6 months (72.5%). Single factor analysis showed that caesarean section (Z =-2.484, P = 0.013), twin/multiple births (Z =-2.637, P = 0.008), gestational age < 39 weeks (Z =-2.698, P = 0.007), course of disease before admission ≥ 2 weeks (Z =-3.348, P = 0.001), application of continuous positive airway pressure (CPAP) or mechanical ventilation during hospitalization (Z = -2.619, P = 0.009), combined with other respiratory pathogen infection (Z =-3.358, P = 0.001), severe pneumonia (Z =-2.236, P = 0.025), electrolyte disturbance (Z =-2.011, P = 0.044) and pertussis encephalopathy (Z =-2.154, P = 0.031) were all the factors which affected the length of paroxysmal phase of children with pertussis. Multiple linear regression analysis showed caesarean section (R = 2.682, P = 0.016), course of disease before admission ≥ 2 weeks (R = 5.325, P < 0.001), combined with other respiratory pathogen infection (R = 4.250, P < 0.001), application of CPAP or mechanical ventilation during hospitalization (R = 11.269, P = 0.002), electrolyte disorders (R = 7.142, P = 0.036), and positive sputum PCR test of Bordetella pertussis on admission (R = 3.648, P = 0.004) were all risk factors for the length of paroxysmal phase.

Conclusions

The paroxysmal phase of children with pertussis may be extended by the following factors: caesarean section, long course of disease before admission (≥ 2 weeks), combined with other respiratory pathogen infections, application of CPAP or mechanical ventilation, electrolyte disorders and positive sputum PCR test Bordetella pertussis on admission.

Key words: Pertussis, Paroxysmal phase, Caesarean section, Electrolyte disorder

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