Research Article
Matrix Metalloproteinase-9 Is a Predictive Factor for Systematic Hypertension and Heart Dysfunction in Patients with Obstructive Sleep Apnea Syndrome
Figure 3
Hypertension-free survival of enrolled OSAS cohort. (a) Till the end of follow-up, 12 cases (12/35, 34.3%) had systematic hypertension. The risk factors for hypertension occurrence include OSAS severity (b), lowest SpO2 during sleep (c), and serum MMP-9 level (d). difference regarding the hypertension-free survival between the two compared groups by Student’s t-test.
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