TAILIEUCHUNG - Doppler in Obstetrics and Gynecology: Principles and Practice

In setting research priorities and objectives for community-based research, the Aboriginal Women’s Health Research Advisory Council and the researchers shall give serious and due consideration to the benefit of the community concerned. In assessing community benefit, regard shall be given to the widest possible range of community interests, whether the groups in question be Aboriginal or non Aboriginal, and also to the impact of research at the local, regional or national level. Wherever possible, conflicts between interests within the community should be identified and resolved in advance of commencing the project. Researchers should be equipped to draw on a range of problem-solving strategies to resolve such conflicts as. | 1 Doppler in Obstetrics and Gynecology Principles and Practice Alexander D. Kofinas MD Associate Professor of Clinical OB GYN Cornell University College of Medicine Introduction The intent of this chapter is to present to the reader the basic principles of Doppler as they apply to Obstetrical and Gynecological practice. We believe that the material presented herein will enable the reader to understand the underlined physiological aspects of utero-placental and fetal circulation. It is important to understand that Doppler is just a tool and not a panacea. Helping us to obtain information regarding the resistance of the various utero-placental and fetal vessels is all about Doppler. How one interprets this information and more importantly how one acts or reacts to the meaning of this information is a totally different issue. Doppler has been presented as the perfect diagnostic tool by some and has been blasted as a useless waste of time and money by others. Of course the truth lies somewhere in between. Obtaining vascular information from the uterine and fetal vessels is not as simple as obtaining information from the aorta the carotid or the femoral artery in adults. A blocked carotid artery is going to cause certain symptoms to most of the patients who present with the problem. A pathologic uterine artery or fetal umbilical artery may not behave in the same manner. In fact this is very much the case and understanding the different responses of the above-mentioned vessels in the placental and fetal circulation is of paramount importance. In addition one has to know what to expect from a pathologic uterine artery or from a fetus with particular problems. We cannot expect from Doppler to predict maternal glycemic control for the same reason that we should not and do not expect an x-ray to tell us about the patient s blood pressure. With this in mind we will try 6 Manscri_Letcrs Doppler in Ob_Gyn Principles and Rev. 2005 2 to enrich your .

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