Coefficient of variation of red cell distribution width has correlations to periodontal inflamed surface area in non obese hypertensive patients

Authors: Srirangarajan Sridharan, Paruchuri Sravani and Dr. Ravi J Rao

Abstract

Aims: To test the hypothesis that higher periodontal inflammed surface area (PISA) has a positive correlation with the coefficient of variation of red cell distribution width (RDWCV) in non-obese hypertensive patients. Materials and Methods: Hypertensive subjects aged between 40-60 years with and without periodontitis were enrolled for the study. They completed a structured questionnaire which included gender, height, weight and other variables. Body mass index was calculated to exclude obese individuals. Clinical periodontal parameters were recorded. PISA was calculated and participants were divided into four groups: Group 1: Nonhypertension without periodontitis, Group 2: Non-hypertensive with periodontitis, Group 3: Hypertensive without periodontitis and Group 4: Hypertensive with periodontitis. Hematologic evaluation included red cell distribution width analysis. Results: ANOVA showed age and diastolic blood pressure was significantly related to RDW-CV at p < 0.001. Periodontal parameters showed significant association with RDWCV in both hypertensive and non hypertensive groups at p < 0.001. Pearson correlation test showed significant association between RDW-CV and PISA. Multivariate regression models showed PISA to be a significant predictor for RDW-CV in periodontitis group when compared to a non-periodontitis group. Conclusions: The increase in the RDW-CV in periodontitis group in both hypertensive and non hypertensive indicates the independent role of increased inflammation on pathogenic alteration of red cell morphology.

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