Abstract

Objective: To observe the efficacy of continuous positive airway pressure (CPAP) in the treatment of obstructive sleep apnea hypopnea syndrome (OSAHS) and its affection on patients' blood gas analysis, C reactive protein(CRP) levels. Methods: This prospective study was performed from October 2016 to July 2017. Fifty hospitalized adult patients with medium or severe OSAHS, who were diagnosed by polysomnography (PSG) in Department of Otorhinolaryngology, Affiliated Hospital of Inner Mongolia Medical University, were collected as a case group. Those patients met the standards of medium or severe OSAHS, among whom 40 were male, 10 were female, the age was between 30 and 65, with a mean age of (47.24±10.28) years, and BMI was (27.94±3.43) kg/m(2). Meanwhile, 50 healthy individuals were chose in the same term as a control group, among whom 37 were male, 13 were female, the age was between 29 and 69, with a mean age of (51.28±10.58) years, body mass index(BMI) was (26.98±2.70) kg/m(2), and apnea-hypopnea index (AHI) was<5/h. The differences of blood gas analysis pH, arterial oxygen saturation (SaO(2)), arterial partial pressure of carbon dioxide (PaCO(2)), arterial partial pressure of oxygen (PaO(2)), CRP before and after the treatment of CPAP in case group and in the control group were compared. The choosing data were disposed and analyzed with statistics software of SPSS 20.0. Among which t test was adopted for measurement data, χ(2) test was adopted for enumeration data, and nonparametric rank sum test was adopted for other measurement data. Results: Before the CPAP treatment, pH, PaO(2) and SaO(2) levels in case group were lower than that in control group, respectively [7.34±0.03 vs. 7.37±0.04, (75.93±9.08) mmHg vs. (80.07±10.94) mmHg (1 mmHg=0.133 kPa), (89.71±6.09) mmHg vs.(93.29±5.36) mmHg, all P<0.05]. Both PaCO(2) level and CRP were higher than that in control group [(43.02±8.43) mmHg vs.(39.26±8.20) mmHg, 1.28[0.27,5.83] mg/L(Median[P(25),P(75)]) vs. 0.51[0.21,2.13] mg/L, both P<0.05]. After the CPAP treatment, pH(7.36±0.04), PaO(2) [(80.28±9.96) mmHg] and SaO(2) [(92.94±4.01) mmHg] level in case group were increased than pretreatment, respectively. Moreover, PaCO(2) level [(39.46±8.36) mmHg] and CRP(0.44[0.21,3.40] mg/L) are decreased than pretreatment (P<0.05), respectively. Conclusion: The CRP and blood gas analyses are significant index to evaluate the state of an illness and to estimate the prognosis of disease of OSAHS, which is deserved to generalize.

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