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Studying the effect of vitamin d on the intensity of torsional nystagmus in Benign paroxysmal positional vertigo (BPPV) in Rohani hospital of Babol
Mahboobeh Sheikhzadeh, Mohsen Monadi , Yones Lotfi, Abdolah Moosavi, Enayatollah Bakhshi,
Volume 78, Issue 11 (February 2021)
Abstract
Background: Benign paroxysmal positional vertigo (BPPV) is the most common cause of vertigo and nystagmus in clinics. Vertigo has many causes and the recurrence of vertigo is unknown. Among a lot of factors, vitamin D deficiency is more important. This study was conducted to determine the effect of vitamin D supplementation on torsional nystagmus in BPPV patients. This study wants to show the deficiency of vitamin D leads to the recurrence of BPPV.
Methods: This case-control study was conducted from April 2017 to May 2018. All eligible patients with BPPV were presented to the Audiology clinic of Babol Rouhani hospital consecutively. Diagnosis of BPPV and the presence of nystagmus were confirmed and serum vitamin D was assessed. Dix-halpike maneuver and videonystagmography (VNG) for assessing nystagmus were done and for serologic assessment, ELISA was performed for analyzing the level of hydroxy 25 vitamin D.Vitamin D sufficient patients (more than 20 ng/ml) with BPPV were considered as the control group and vitamin D deficient patients (less than 20 ng/ml) were as the test group.
  In all the patients of two groups, torsional nystagmus (vertical, horizontal and oblique) were studied and compared.
Results: Twenty-seven patients in each group have completed the study. The mean age of the control group and test group was 48.2+4.8, 47.8+5.7 and 47.2+4.9 years respectively (P=0.91). Two groups were comparable regarding nystagmus severity. All patients had at least two attacks During the last six months. The mean of serum 25 OHD was 33.81 in the control group and 11.41 in the test group that was statistically significant (P=0.001 for all) and the severity of torsional nystagmus in three axes of horizontal, vertical and oblique in the control group was 4.98, 9.06, 5.40 respectively and 3.32, 8.86, 6.93 in the test group that was statistically significant as compared with the control group (P=0.001).
Conclusion: Findings of this study indicate a relationship between vitamin D deficiency and recurrence of nystagmus in BPPV patients

Diagnostic Value of high sensitivity C-reactive protein in Differentiating Transudate and Exudative Fluid in Patients with Pleural Effusion.
Mohammad Ranaee, Yaghob Khoshsirat Tomaj , Hemmat Gholinia Ahangar , Mahmood Monadi,
Volume 80, Issue 3 (June 2022)
Abstract
Background: Pleural effusion is the accumulation of fluid in the pleural cavities resulting from an imbalance of fluid production and reabsorption. Early detection of the cause of pleural effusion leads to early treatment and reduces effects on the patient. The most important step in pleural effusion diagnosis is to determine its nature and to determine whether it is transudate or exudate. CRP(C-reactive protein) is an acute-phase protein that is synthesized by hepatocytes during inflammatory states, the highly sensitive type of CRP is more sensitive than the standard CRP test and measures lower levels. It may help differentiate the nature of pleural effusion. The aim of this research was to evaluate the hs-CRP diagnostic value in differentiating the nature of the pleural effusion
Methods: In this descriptive-analytical cross-sectional study, in Rohani hospital of Babol from March 2017 to February 2019, 75 pleural effusion patients, undergoing thoracentesis, the hs-CRP level was measured in their pleural fluid and were compared based on Light´s criteria in two groups of transudates and exudates. Using the ROC curve, the appropriate cut-off point was determined for hs-CRP to differentiate the nature of pleural effusion.
Results: Out of 75 patients, 45 patients were in the exudative pleural effusion group and 30 patients in the transudative group. The mean of hs-CRP in the exudate group was 18.27±10.74 mg/L and in the transudative group 2.98±2.15 mg/L (p˂0.001). The cut-off point for hs-CRP of pleural fluid was calculated to be 5.94 mg / L, which has a sensitivity of 88.9% and a specificity of 93.3%. This marker was also studied in exudative subgroups, and there was a significant difference between pleural hs-CRP levels in two groups of pleural effusion due to malignancy and Parapneumonic effusion (p=0.011).
Conclusion: The pleural fluid hs-CRP can be used as a useful marker for differentiating the nature of pleural effusion and differentiating the pleural effusion of transudate and exudate.

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