SUN-272 THE EFFECTS OF DIFFERENT LUNAR PHASES ON FLUID BALANCE AND BLOOD PRESSURE IN HEMODIALYSIS PATIENTS

Abstract

The effect of lunar phases on barometric pressure have been known since 19th century. We aimed to explore the effects of different lunar phases on fluid balance and blood pressure in hemodialysis (HD) patients. A retrospective analysis of the medical data of 21 HD patients was performed. The following data were collected during three lunar cycles (December 7, 2018 to March 6, 2019): patient weight before and after HD, ultrafiltration volume, systolic (SBP) and diastolic blood pressure (DBP) before, during and after the procedure. The means of the studied variables were compared in different moon phase groups using the Paired-Samples T-Test. Data analysis was performed with MS Excel and IBM SPSS 23 software. 798 HD procedures of 21 patients were analyzed. 57.1% of them were male and 42.9% were female. The mean age of the participants was 57.95 ± 16.84 years old. There was a statistically significant difference when comparing SBP in the 1st h of HD. There was a difference of 3.7 mmHg between the new moon and the full moon (p=0.038) and a difference of 3.6 mmHg between the first quarter and the full moon (p=0.036). However, there were no statistically significant differences between the means of other studied variables. The results are presented in Table 1. The results of the study reveal that there are no clinically relevant differences between various variables during different lunar phases. There are only minor differences in SBP during the 1st h of HD, which should be further investigated in a larger population.