جستجوی مقالات مرتبط با کلیدواژه "حوادث قلبی عروقی" در نشریات گروه "پزشکی"

Background & Aims:

Wearing a mask is necessary to reduce disease transmission, but its effect on cardiorespiratory responses during physical activity of different intensities is not known. The purpose of this study was to investigate the response of cardiovascular and spirometry indicators during physical activity to different intensities with and without respirator masks (medical and N95) in healthy women.

Materials & Methods:

In a semi-experimental study, 72 women aged 20 to 45 were randomly divided into 4 experimental groups and 2 control groups (12 people in each group). The experimental groups were exposed to wearing two types of masks (medical and N95) and physical activity with submaximal (60 to 70% MHR) and maximal (80 to 90% MHR) intensities. Myocardial oxygen consumption (MVo2), hemoglobin saturation (SPO2), heart rate, blood pressure, FEV1, FVC, and FEV1/FVC were evaluated by standard method. Data were analyzed by two-way analysis of variance at the level of P ≤0.05.

The factor of exercise intensity with both masks caused a significant increase in MVo2 (P=0.001), heart rate (P=0.001), systolic blood pressure (P=0.003), FVC (P=0.003), and FEV1/FVC (P=0.009). Additionally, mask modality (medical vs. N95) had no effect on cardiovascular and spirometry variables during both intensities of physical activity.

Wearing a mask does not have a harmful effect on the cardio-respiratory system of healthy women, even during high-intensity physical activity. More studies are necessary to evaluate the effect of the mask on the heart and blood vessels in the elderly and patients.

Chest pain is the most common reason for patients to be referred to the emergency department of hospitals. This study was performed to compare the GRACE and TIMI scores in predicting important cardiovascular events in patients.

This descriptive-analytical study was performed on 862 cardiac patients who were referred to the emergency department of Taleghani Hospital in Urmia in the period of April 1, 2016 to the end of September 2016 by census method. A checklist containing demographic information, medical history and risk factors was used to collect data. After scoring patients, we examined and followed up both groups over the next 30 days and recorded any cardiovascular events such as sudden death, AMI or immediate revascularization. The data were tested using SPSS16 and descriptive statistics tests. T-test and ROC curve were analyzed.

The results showed that in general, out of 862 patients who were studied (50.3%), 433 were female and (49.7%) 429 were male. Most of the patients were under 65 years old 627 (72.7%) and the age range was (17-91). The highest initial diagnosis of nonSTEMI patients was UA with 811 (94.9%) cases. On the other hand, the highest risk factors of patients were HTN 449(52%), CAD 314 (36.425) and DM 22 (25.55). The highest blood pressure was between (100-120) with 328 cases and serum creatinine between (0.6 to 1.3) with 770 cases. MACE after 30 days in GRACE system 17 people (32.69%) were in high risk group and in TIMI 3 people (37.5%) were in high risk group. In MACE evaluation, the specificity of GRACE system (cutoff point=30) was 89.27 vs. 52.24, the specificity of TIMI system (cutoff point=7.3) and the sensitivity of GRACE 93 (cutoff point=10) versus TIMI 85.71 (cutoff point=8.3) is.

The results showed that GRACE was more sensitive and characteristic than TIMI.