Relation of meteorological parameters to pneumonia

In this study, we aimed to evaluate the relationship between pneumoniae and sociodemographic characteristics, hemogram parameters, meteorological parameters (temperature, humidity, precipitation, airborne particles, sulfur dioxide (SO2), carbon monoxide (CO), nitrit dioxide (NO2), nitrit oxide (NO), Nitric oxide (NOX)] in patients with the diagnosis of pneumoniae in the emergency department. Our study was performed retrospectively with patients over 65 years of age who were diagnosed with pneumoniae. The meteorological variables in the days of diagnosing pneumoniae were compared with the meteorological variables in the days without diagnosis of pneumoniae. The sociodemographic characteristics, hemogram and meteorological parameters (temperature, humidity, precipitation, airborne particles, SO2, CO, NO2, NO, NOX of the patients were investigated. The mean age of 2606 patients included in the study was 77.7±7.6 years and 53.2% were male. The most common lesion in imaging was lober pneumoniae (45.3%). Patients' CURB-65 score was generally stage 1 or 2. 61.1% of patients had COPD and 38.7% of asthma. 74% of the patients were discharged. Although sex was related to hemoglobin, leukocyte, neutrophil, neutrophil lymphocyte ratio (NLR), lymphocyte and thrombocyte levels (p<0.05); it was not related to mean platelet volüme (MPV), red cell distribution width (RDW), and thrombocyte/lymphocyte ratio (PLR) (p>0.05). Whilethe association of hemoglobin, leukocyte, lymphocyte, neutrophil, RDW, NLR and PLR levels with CURB-65 was significant (p<0.005); MPV and platelet levels were not associated with CURB-65 (p>0.05). Although hemoglobin, leukocyte, lymphocyte, neutrophil, RDW, NLR and PLR levels were associated with hospitalization status (p<0.005); there was no correlation between MPV and platelet levels in admission (p> 0.05). When the temperature was high and low, the number of days consulted due to pneumoniae was related to low air temperature (p<0,05). There was no relationship between the number of days referred for pneumoniae and temperature when the temperature was moderate (p>0,05). When the humidity was high, normal and low, the number of days admiting due to pneumoniae was correlated with high humidity (p<0,05). In the periods when sea level pressures were high, the number of days referred for pneumoniae was related to high pressure ratios (p<0,05). No relationship was found vii between the number of days consulted due to pneumoniae and pressure levels during periods when the sea level pressure was normal and low (p>0,05). During the periods when PM10, NO, NO2, NOX and CO levels were high, the number of days referred for pneumoniae was increased (p<0,05). There was no correlation between PM2,5 and SO2 levels and the number of days referred for pneumoniae (p>0,05) . On rainy days, the number of days referred to the hospital due to pneumoniae was significantly higher (p<0.05). It was determined that temperature, NOX, NO2, CO value 4 days before and humidity and sea level pressures 2 days ago affected the number of patients admitted to the hospital due to pneumoniae (p<0.05). Factors at other time periods were not associated withthe number of patients admitted to the hospital due to pneumoniae (p>0.05). As a result, climatic (temperature, humidity, pressure levels, rain, etc.) and environmental factors (airborne particles, CO, NO, NOX) were found to be effective on the number of patients admitted to the hospital due to pneumoniae.