Background: The normal decline in systolic blood pressure during recovery phase of treadmill exercise dose not occur in most patients with coronary artery disease, in others recovery values systolic blood pressure may even exceed the peak exercise value. Objectives: Treadmill exercise test parameters indicating the presence and extent of coronary artery disease have traditionally included such as exercise duration, blood pressure and ST-segment response to exercise. The three –minute systolic blood pressure ratio is another important indicator of presence and significance of coronary artery disease is useful and obtainable measure that can be applied in all patients who are undergoing stress testing for evaluation of suspected ischemic heart disease and this increase the sensitivity of exercise test . Type of the study: A prospective study. Methods: Between April 2011 and April 2012 ,all patients underwent treadmill exercise test , echocardiography coronary angiography in Ibn Ab-bitar Hospital Cardiac Surgery. Clinical and procedural data for patients undergoing treadmill and coronary angiography were prospectively collected and entered into database specially designed for the present study.To calculate mean systolic blood pressure ratio for each , Measurement of blood pressure in the 3rd minute of recovery time and divided by peak systolic blood pressure during exercise test ,after excluding patients . Coronary angiography was done for all patients who under went treadmill exercise test and multiple views were taken accordingly to clarify the lesion and critical lesion defined as >50% stenosis in LMS and >70% stenosis in LAD,LCX and RCA. Results: We studied 100 patients In the period from April 2011 to April 2012, 78(78%) male and 22 (22%) a female with a mean age 55.49±7.60 who undergone treadmill exercise testing and coronary angiography to assess the chest pain, 32 patient had normal blood pressure 68 had hypertension and 24 patients had normal coronary angiography and 76 patients had abnormal coronary angiography. SBP/3 minute recovery blood pressure ratio was significantly higher in patient with coronary artery disease than patient without coronary artery disease (mean ±SD O.92±0.09 VS 0.81 SBP/3 minute recovery blood pressure ratio was significantly related with the severity of coronary artery disease its higher in three vessels than one vessel disease 0.95±0.10 vs0. 91 ±0.01 p-value 0.0001. Conclusions: post exercise blood pressure response in patients with coronary artery diseaseis higher than patients with normal coronary artery .post exercise blood pressure is related to the severity of coronary artery disease
That the main feature of the economics many countries in general is a tendency towards defining the role of the public sector in economic activity and the tendency towards encourage the private sector to investment in public projects especially in countries those tendency towards market economy actually.
That increased economic development proven failure in achieving more economic growth both individually in many countries especially developing countries socialist, by researchers this led one way or another to direction of corrective reforms in their economic was one of them in Transformation of public companies into Shareholding companies contributes to the public sector in resources and expertise
... Show MoreA faunistic review of the genus Chaitophorus Koch, 1854, including four species in Iraq is given; the distribution data of each species and their hosts have been recorded. In this investigation the poplar leaf aphid Ch. populialbae (Boyer de Fonscolombe, 1841) is recorded here for the first time in Iraq on popular trees Populus euphratica Oliv. during the period from November 2016 to April 2017 in Baghdad province.
A brief description for apterous viviparous female of this species is given; and a key to the species of the genus Chaitophorus is constricted.
In this paper, split-plate airlift electrochemical reactor as an apparatus with new configuration for wastewater treatment was provided. Two aluminum plates were fixed inside the reactor and present two functions; first it works as split plates for internal loop generation of the airlift system (the zone between the two plates acts as riser while the other two zones act as downcomer) and second it works as two electrodes for electrocoagulation process. Simulated wastewater contaminated with zinc ions was used to test the performance of this apparatus for zinc removal by studying the effect of different experimental variables such as initial concentration of zinc (50-800 ppm), electrical current density (2.67-21.4 mA/cm2), init
... Show MoreThis study aimed at examining the role played by the media outlets during the coverage
of the presidential election campaigns 2020 of the United States of America.
The analytical study used through a partial inventory of the research community
for almost three months from the announcement of the candidates’ names by
the major parties on August 13 to November 6، which is the official election day in
the U.S. National Public Radio Station (NPR) to achieve the objectives of the study.
The study reached a number of conclusions related to the contents، methods and
sources of media coverage of the election campaigns of the 2020 U.S. at the mentioned
station، where the researcher proposed a number of recommendations
This investigation integrates experimental and numerical approaches to study a novel solar air heater aimed at achieving an efficient design for a solar collector suitable for drying applications under the meteorological conditions of Iraq. The importance of this investigation stems from the lack of optimal exploitation of solar energy reaching the solar collector, primarily attributable to elevated thermal losses despite numerous designs employed in such solar systems. Consequently, enhancing the thermal performance of solar collectors, particularly those employed in crop drying applications, stands as a crucial focal point for researchers within this domain. Two identical double-pass solar air heaters were designed and constructed for
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