Abstract
Aim.The aim of this study was to compare clinical manifestations of ACS in middle-aged and elderly people who were hospitalized in ShahidRajai Cardiovascular Medical and Research Center in 2016 .
Background. ACS is one of the most important health challenges in the world. The most important diagnostic marker of ACS is the clinical symptoms, but the symptoms of the disease are different among middle-aged and elderly people.
Method. This study was a cross-sectional study. The sample consisted of 384 patients with ACS admitted to ShahidRajai Cardiovascular Medical and Research Center in 2016. Data collection tools included demographics form, a questionnaire for recording signs and symptoms of ACS and the pain questionnaire. Data were analyzed in SPSS 18.
Findings. The most common symptom was chest pain in both groups. Typical symptoms between the two groups showed no statistically significant difference. Of non-typical symptoms, hiccup was reported more in middle-age group than the elderly group (P=0.001). In terms of the location of the pain, left arm in the elderly was higher than the middle-aged group (P=0.001). The quality of pain in both groups was not significantly different.
Conclusion. Chest pain is the most common symptom in both middle-aged and elderly people. Among the non-typical symptoms, only hiccups in the middle-aged people are more common than the elderly people. Health care providers should pay more attention to the initial assessment.

Abstract
Aim. The present study was conducted to determine the relationship between seasonal changes and incidence of AMI in Sistan and Baluchestan province, Iran.
Background. Although various studies have been carried out to examine the relationship between seasonal changes and incidence of Acute Myocardial Infarction (AMI) in different parts of the world, many of them have limitations and there are many contradictions between their findings. Despite considerable prevalence of AMI in Sistan and Baluchestan Province, similar studies have not been conducted in this area.
Method. This cross-sectional study was done based on medical data of heart center of Sistan and Baluchestan Province from March 2015 to April 2016. In this study, census sampling was achieved of all the patients with AMI symptoms. Variables such as age, sex, marital status, birth date, physical symptoms, and past medical history; and also meteorological parameters such as minimum, maximum and average of temperature (Celsius), and wind direction were collected.
Findings. Except of mean rainfall, mean rate of other parameters had statistically significant differences during 12-month period of the study. Spearman correlation test showed a positive statistically significant correlation of incidence of AMI during one year with sunshine hours (r=0.685, p=0.014), and maximum daily temperature (r=0.626, p=0.030).
Conclusion. Finding revealed that raising temperature had direct relationship with incidence of AMI. The findings could be a foundation for governmental important health plans to control the incidence of AMI.