scholarly journals Influence of meteorological factors on the onset of primary spontaneous pneumothorax

2018 ◽  
Vol 100 (8) ◽  
pp. 606-611 ◽  
Author(s):  
Y Aljehani ◽  
R Niaz ◽  
F Almajid ◽  
H Elbawab
Keyword(s):  
Atmospheric Pressure ◽  
Pressure Difference ◽  
Spontaneous Pneumothorax ◽  
Meteorological Parameters ◽  
Meteorological Factors ◽  
Weather Conditions ◽  
Primary Spontaneous Pneumothorax ◽  
The Other ◽  
Average Temperature ◽  
Significant Difference

Introduction Although links between meteorological conditions and primary spontaneous pneumothorax have been proposed, the reports are controversial. The aim of the study is to correlate between climatic changes and the development of this condition. Materials and methods A retrospective chart review included all patient presenting with primary spontaneous pneumothorax to King Fahd Hospital, Imam Abdulrahman Bin Faisal University, Alkhobar, Saudi Arabia, from 1 January 2005 to 31 December 2016. Meteorological data were collected from King Abdulaziz airbase station using an online source for the same time interval. The data were analysed to determine differences in weather conditions between days on which primary spontaneous pneumothorax occurred and those in which it did not. Logistic regression model was used to obtain predicted risks for the onset of primary spontaneous pneumothorax with respect to weather conditions. Result Two hundred and eighty-nine patients were found to have primary spontaneous pneumothorax in the 281 days included in the study. Among the meteorological parameters, significant differences were found in average temperature and atmospheric pressure difference between day of admission and two days before the admission, between days with primary spontaneous pneumothorax and days without. There was no significant difference in the other meteorological factors between days with primary spontaneous pneumothorax and days without. Conclusion Two hundred and eighty-nine patients were found to have primary spontaneous pneumothorax in the 281 days included in the study. Among the meteorological parameters, significant differences were found in average temperature and atmospheric pressure difference between day of admission and two days before the admission, between days with primary spontaneous pneumothorax and days without. There was no significant difference in the other meteorological factors between days with primary spontaneous pneumothorax and days without.

scholarly journals Incidence of primary spontaneous pneumothorax is not associated with microclimatic variations. Results of a seven-year survey in a temperate climate area

2017 ◽  
Vol 87 (1) ◽  
Author(s):  
Ivan Comelli ◽  
Alessandra Bologna ◽  
Andrea Ticinesi ◽  
Andrea Magnacavallo ◽  
Denis Comelli ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Spontaneous Pneumothorax ◽  
Meteorological Data ◽  
Primary Spontaneous Pneumothorax ◽  
Temperate Climate ◽  
Climate Data ◽  
Observational Period ◽  
Average Temperature ◽  
Ed Visits ◽  
Linear Regressions

<p>Some diseases, such as renal colic and atrial fibrillation, display an association with microclimatic variations. In particular, despite a correlation has been reported between incidence of primary spontaneous pneumothorax (PSP) and meteorological variations, the evidence remains poor and conflictual. The aim of this study was to assess the influence of day-by-day meteorological variations on the number of visits for PSP in the Emergency Department (ED). All PSP cases were retrieved from the hospital database from January 2008 to December 2014. For all the observational days, meteorological data about the Parma Province were obtained from the Environment and Climate Regional Agency.  The correlation between ED visits for PSP and variation of air temperature (T°), atmospheric pressure (hPa) and humidity (%) was then tested. The chronological data of all the visits for PSP were correlated with climate data by univariate linear regressions analysis. A total number of 608.215 ED visits were recorded during the observational period, with an average of 238 patients per day. Overall, 257 PSP cases were observed (mean age 37±21 years), 79% males and 21% females. No significant correlation between average daily visits for SP and daily change of average temperature, humidity, or atmospheric pressure was observed throughout the observational period (p&gt;0.05 for all). The results of the study show that the incidence of PSP is not significantly associated with changes of microclimatic variables. <strong></strong></p>

scholarly journals Meteofactors and admittance of patients with atrial fibrillation for emergency medical care

2018 ◽  
Vol 18 (3) ◽  
pp. 64-68
Author(s):  
V A Belyayeva
Keyword(s):  
Atrial Fibrillation ◽  
Medical Care ◽  
Air Temperature ◽  
Atmospheric Pressure ◽  
Meteorological Parameters ◽  
Meteorological Factors ◽  
Weather Conditions ◽  
Emergency Medical Care ◽  
Emergency Medical ◽  
Negative Effect

This study presents the results of a retrospective analysis of the challenges of patients with atrial fibrillation (AF) for ambulance medical care depending on weather conditions and season. Aim. This study aimed to evaluate the effect of meteorological factors on addressing of patients with AF for emergency medical care in the context of seasonal dynamics. Materials. Archival cards of ambulance calls in the winter, spring, and summer 2012 and the corresponding databases of average daily meteorological parameters, day-to-day changes (∆), and pathogenicity indices were used: air temperature (it), atmospheric pressure (iр), humidity (ih), wind speed (iv), cloudiness (in), and general weather pathogenicity index (IWP). Results. In winter, the most significant negative effect is caused by fluctuations in meteo-factors: average daily air temperature and atmospheric pressure, it, ∆p, IWP; in spring were the average daily air temperature and atmospheric pressure, it, i∆t; in summer was i∆t. The response of the population to AF for medical care in the winter (6.7 ± 0.5 person/day) and spring (6.9 ± 0.4 person/day) is higher than that in summer (5.2 ± 0.5 person/day). Conclusion. The maximum number of correlation links between the frequency of ambulance medical care calls and meteorological factors is present in the winter and spring and has gender and season specifics. Seasonality factor affects the treatment of patients with AF for emergency medical care.

scholarly journals Meteorology in field artillery ballistic calculations

2021 ◽  
Vol 2090 (1) ◽  
pp. 012149
Author(s):  
M Mendel
Keyword(s):  
Atmospheric Pressure ◽  
Open Space ◽  
Meteorological Parameters ◽  
Meteorological Data ◽  
Armed Forces ◽  
Weather Conditions ◽  
Atmospheric Conditions ◽  
Area Of Interest ◽  
Single Probe ◽  
Atmospheric Data

Abstract The most important meteorological data are:ambient temperature, precipitation quantity, air humidity, amount and type of clouds, atmospheric pressure, wind direction and speed, visibility, weather phenomena. These coefficients impact the effectiveness of various combat activities, especially those conducted in an open space. Knowledge of future weather conditions is essential for planning the location, calculating times, choice of means, and other aspects relevant to the upcoming operations. Taking weather conditions into account is vital, specifically when it comes to planning combat operations, where the accuracy in cooperation is of paramount importance. Rocket forces and artillery is a particular type of armed forces where weather conditions are critical. The effectiveness of artillery depends on ballistic calculation precision, and so knowledge of atmospheric conditions is fundamental. Atmospheric data are collected from sounding using a single probe attached to a balloon. It is generally known that particular meteorological parameters change in a smooth spatial manner depending on various coefficients. Information about the atmosphere collected by a single probe may be insufficient, due to the possibility of a balloon drifting away from the area of interest, and the calculations are based on data received from its probe. In this paper, I will suggest a method for preparing artillery use meteorologically, which takes into account the distribution of particular meteorological coefficients over a given area.

scholarly journals SARS-CoV-2 and the Weather: Correlation between COVID-19 and Meteorological Variables in 3 Cities in Mexico

2021 ◽  
pp. 74-91
Author(s):  
Hermes Ulises Ramirez-Sanchez ◽  
Alma Delia Ortiz-Bañuelos ◽  
Aida Lucia Fajardo-Montiel
Keyword(s):  
Wind Speed ◽  
Atmospheric Pressure ◽  
Ecological Study ◽  
Metropolitan Areas ◽  
Meteorological Factors ◽  
Correlation Coefficients ◽  
Weather Conditions ◽  
Dew Point ◽  
Meteorological Variables ◽  
Infected Person

Meteorological factors such as temperature, humidity, atmospheric pressure, wind speed and direction are associated with the dispersion of the SARS-CoV-2 virus through aerosols, particles <5μm are suspended in the air being infective at least three hours and dispersing from eight to ten meters. It has been shown that a 10-minute conversation, an infected person produces up to 6000 aerosol particles, which remain in the air from minutes to hours, depending on the prevailing weather conditions. Objective: To establish the correlation between meteorological variables, confirmed cases and deaths from COVID-19 in the 3 most important cities of Mexico. Methodology: A retrospective ecological study was conducted to evaluate the correlation of meteorological factors with COVID-19 cases and deaths in three Mexican cities. Results: The correlations between health and meteorological variables show that in the CDMX the meteorological variables that best correlate with the health variables are Temperature (T), Dew Point (DP), Wind speed (WS), Atmospheric Pressure (AP) and Relative Humidity (RH) in that order. In the ZMG are T, WS, RH, DP and AP; and in the ZMM are RH, WS, DP, T and AP. Conclusions In the 3 Metropolitan Areas showed that the meteorological factors that best correlate with the confirmed cases and deaths from COVID-19 are the T, RH; however, the correlation coefficients are low, so their association with health variables is less than other factors such as social distancing, hand washing, use of antibacterial gel and use of masks.

scholarly journals Relationships Between Weather Conditions, Agronomic Practices, and Fermentation Characteristics with Deoxynivalenol Content in Fresh and Ensiled Maize

Plant Disease ◽  
2005 ◽  
Vol 89 (11) ◽  
pp. 1151-1157 ◽  
Author(s):  
M. A. Mansfield ◽  
E. D. De Wolf ◽  
G. A. Kuldau
Keyword(s):  
Cultural Practices ◽  
Weather Conditions ◽  
Weather Data ◽  
Average Temperature ◽  
Agronomic Practices ◽  
Daily Average ◽  
No Till ◽  
Significant Difference ◽  
The Relationship ◽  
Hybrid Development

The deoxynivalenol (DON) content of maize silage was determined in samples collected at harvest and after ensiling in 2001 and 2002 from 30 to 40 Pennsylvania dairies. Information on cultural practices, hybrid maturity, planting, and harvest date was collected from each site. Site-specific weather data and a corn development model were used to estimate hybrid development at each site. Correlation analysis was used to assess the relationship between weather data, hybrid development, cultural practices and preharvest DON. Fermentation characteristics (moisture, pH, and so on) of ensiled samples were measured to study their relationship to postharvest DON contamination. No significant difference (P ≤ 0.05) was noted between the numbers of samples containing DON in 2001 and 2002, although concentration was higher in 2002 samples. A positive correlation was observed between DON concentration of harvest samples and daily average temperature, minimum temperature, and growing degree day during tasselling, silking, and milk stages. A negative correlation was observed between daily average precipitation at blister stage and DON concentration in harvest samples. Samples from no-till or minimum-till locations had higher DON concentrations than moldboard or mixed-till locations. Harvest samples had higher DON concentration than ensiled samples, suggesting that some physical, chemical, or microbiological changes, resulting from ensiling, may reduce DON in storage.

scholarly journals Meteorological factors correlate with transmission of 2019-nCoV: Proof of incidence of novel coronavirus pneumonia in Hubei Province, China

2020 ◽  
Author(s):  
Jianfeng Li ◽  
Linyuan Zhang ◽  
Zhihua Ren ◽  
Caihong Xing ◽  
Peihuan Qiao ◽  
...  
Keyword(s):  
Water Vapor ◽  
Vapor Pressure ◽  
Minimum Temperature ◽  
Meteorological Parameters ◽  
Meteorological Factors ◽  
Water Vapor Pressure ◽  
Average Pressure ◽  
Temperature Minimum ◽  
Average Temperature ◽  
Average Water

AbstractObjectivemany potential factors contribute to the outbreak of COVID-19.It aims to explore the effects of various meteorological factors on the incidence of COVID-19.MethodsTaking Hubei province of China as an example, where COVID-19 was first reported and there were the most cases, we collected 53 days of confirmed cases (total 67773 cases) and ten meteorological parameters up to March 10. Correlation analysis and linear regression were used to judge the relationship of meteorological factors and increment of COVID-19 confirmed cases.ResultsUnder 95% CI, the increment of confirmed cases in Hubei were correlated with four meteorological parameters of average pressure, average temperature, minimum temperature and average water vapor pressure (equivalent to absolute humidity).The average pressure was positively correlated with the increment (r=+0.358).The negative correlations included average temperature (r=-0.306), minimum temperature (r=-0.347), and average water vapor pressure (r=-0.326). The linear regression results show if minimum temperature increases by 1□, the incremental confirmed cases in Hubei decreases by 72.470 units on average.ConclusionStatistically, the incidence of COVID-19 was correlated with average pressure, average temperature, minimum temperature and average water vapor pressure. It is positively correlated with the average pressure and negatively correlated with the other three parameters. Compared with relative humidity, 2019-nCov is more sensitive to water vapor pressure. The reason why the epidemic situation in Hubei expanded rapidly is significantly related to the climate characteristics of low temperature and dryness of Hubei in winter.

scholarly journals Evaluation of the relationship between primary spontaneous pneumothorax and exercise and patient return to previous activities in patients after treatment

2021 ◽  
Vol 9 (2) ◽  
pp. 008-014
Author(s):  
Rastin Hosseinzadeh Asli ◽  
Manouchehr Aghajanzadeh ◽  
Hossein Hosseinzadeh Asli ◽  
Yousha poorahmadi
Keyword(s):  
Spontaneous Pneumothorax ◽  
Clinical Manifestations ◽  
Case Series ◽  
Tube Thoracostomy ◽  
Primary Spontaneous Pneumothorax ◽  
Chi Square ◽  
Exercise Time ◽  
Exact Test ◽  
Significant Difference ◽  
The Relationship

Introduction: The most common cause of primary spontaneous pneumothorax (PSP) is sub pleural bleb apical rupture. Little is known about the relationship between PSP and exercise and return to exercise time. In this study, wee tend to investigate the relationship between exercise and PSP and time of return to exercise and previous activities. Method: This study was designed as a case series and the sample size included all patients diagnosed with PSP in Razi and Poursina and Aria hospitals of Rasht during 2015-2019 based on inclusion criteria. Variables were analyzed using Fisher's exact test, Chi square, Mann Whitney U and t-test (p<0.05). Results: The most common type of treatment in patients was transaxillary thoracotomy with pleurodesis with iodine (TTP) in 58.2% and tube thoracostomy and pleurodesis in 41.7%, which was not statistically significant between athletes and non-athletes (p=0.806). Athletes who underwent TTP after 4 weeks and those treated with tube thoracostomy and pleurodesis after 8-12 weeks were advised to return to their previous activity. Of athletes, 9.5% had recurrence; of non-athletes, 9.8% had recurrence. Of athletes, 4.8% did not tolerate a return to their previous activity; of non-athletes, 7.3% did not tolerate returning to their previous activity regardless of treatment, and this difference was not significant. Conclusion: Our study showed no significant difference between clinical manifestations and image findings as well as frequency of treatment and complications in both athlete and non-athlete patients. There is no increase in recurrence and intolerance at the time recommended for return to previous activity.

Effects of Meteorological Factors on PM10 Pollution in Yantai Urban Areas

2012 ◽  
Vol 178-181 ◽  
pp. 328-331
Author(s):  
Jian Guo Song ◽  
Ming Chang ◽  
Xin Zhi Wang ◽  
Wei Liu
Keyword(s):  
Relative Humidity ◽  
Frequency Distribution ◽  
Urban Areas ◽  
Meteorological Factors ◽  
Air Pressure ◽  
The Other ◽  
Average Temperature ◽  
The North

This paper makes analysis and statistics about the frequency distribution of average temperature, pressure, humidity and wind conditions between moderate pollution days of PM10(API>200) and conventional days from 2008 to 2010 in Yantai. The result shows that the frequency of PM10 pollution which occurred in winter is close to the sum of the other seasons. PM10 pollution days appears easily under such conditions: the average temperature below 10°C, average air pressure is higher than 101.0kPa, relative humidity is less than 70%, or average weed speed of 3-7m/s with the north-south wind.

Mycotoxin Contamination in Stored Maize and Groundnuts Based on Storage Practices and Conditions in Subhumid Tropical Africa: The Case of Kilosa District, Tanzania

2016 ◽  
Vol 79 (12) ◽  
pp. 2160-2166 ◽  
Author(s):  
K. S. MAGEMBE ◽  
M. W. MWATAWALA ◽  
D. P. MAMIRO
Keyword(s):  
Fumonisin B1 ◽  
Weather Conditions ◽  
Storage Conditions ◽  
The Other ◽  
High Concentration ◽  
Data Loggers ◽  
Honestly Significant Difference ◽  
Significant Difference ◽  
Using Data ◽  
Log Linear

ABSTRACTExperiments were conducted to assess the influence of storage practices on mycotoxin incidences in stored maize and groundnuts in Kilosa District, Eastern Central Tanzania. Factorial experiments were used to test the effects of processing, storage conditions, and protectants at 3-month intervals for 12 weeks. Temperature and relative humidity data were recorded by using data loggers. The differences among the treatment means were compared using Tukey's honestly significant difference test at 5% probability level. The log-linear model was used to determine the influence of weather on mycotoxin. Dried neem (Azadirachta indica) leaves significantly reduced fumonisin B1 (FB1) in stored maize. Levels of FB1 were significantly higher in maize heaped on the floor than in the other tested storage methods (P &lt; 0.001). Similarly, aflatoxin levels were significantly higher in groundnuts stored in nylon bags than in the other tested methods (P &lt; 0.001). The high concentration of mycotoxins at the study villages suggests that storage practices and weather conditions play major roles in mycotoxin production.

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