Normal Heart NOTES
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
Coarctation of the Aorta Interrupted Aortic Arch
T HE P EDIATRIC C ARDIAC S URGERY I NQUEST R EPORT Coarctation of the aorta In the normal heart, blood flows to the body through the aorta, which connects to the left ven- tricle and arches over the top of the heart.In coarc- tation of the aorta,the aorta is pinched (in medical terms, coarcted) at a point somewhere along its length. This pinching restricts blood flow from the heart to the rest of the body. Often, the baby also has other heart defects, such as a narrowing of the aortic arch (in medical terms,transverse aortic arch hypoplasia). Usually no symptoms are apparent at birth, but can develop within a week of birth with the closure of the ductus arteriosus. The possible conse- Diagram 2.9 Coarctation of the aorta quences of this condition are poor feeding, an 1 – pinched or coarcted aorta enlarged heart, an enlarged liver and congestive Flow patterns are normal but are reduced below the coarctation. Blood pressure is increased in ves- heart failure. Blood pressure also increases above sels leaving the aorta above the coarctation. The the constriction. broken white arrow indicates diminished blood flow through the aorta. Timing of surgery depends on the degree of coarctation. Surgery may be delayed with mild coarctation (which sometimes is not detected until adoles- cence). However, if a baby develops congestive heart failure or high blood pressure, early surgery is usually required. A baby with severe coarctation should have early surgery to prevent long-term high blood pres- sure. The coarctation can be repaired in a number of ways without opening the heart.The surgeon can remove the narrowed part of the aorta and sew the ends together, thereby creating an anastomosis. -
Thoracic Aorta
GUIDELINES AND STANDARDS Multimodality Imaging of Diseases of the Thoracic Aorta in Adults: From the American Society of Echocardiography and the European Association of Cardiovascular Imaging Endorsed by the Society of Cardiovascular Computed Tomography and Society for Cardiovascular Magnetic Resonance Steven A. Goldstein, MD, Co-Chair, Arturo Evangelista, MD, FESC, Co-Chair, Suhny Abbara, MD, Andrew Arai, MD, Federico M. Asch, MD, FASE, Luigi P. Badano, MD, PhD, FESC, Michael A. Bolen, MD, Heidi M. Connolly, MD, Hug Cuellar-Calabria, MD, Martin Czerny, MD, Richard B. Devereux, MD, Raimund A. Erbel, MD, FASE, FESC, Rossella Fattori, MD, Eric M. Isselbacher, MD, Joseph M. Lindsay, MD, Marti McCulloch, MBA, RDCS, FASE, Hector I. Michelena, MD, FASE, Christoph A. Nienaber, MD, FESC, Jae K. Oh, MD, FASE, Mauro Pepi, MD, FESC, Allen J. Taylor, MD, Jonathan W. Weinsaft, MD, Jose Luis Zamorano, MD, FESC, FASE, Contributing Editors: Harry Dietz, MD, Kim Eagle, MD, John Elefteriades, MD, Guillaume Jondeau, MD, PhD, FESC, Herve Rousseau, MD, PhD, and Marc Schepens, MD, Washington, District of Columbia; Barcelona and Madrid, Spain; Dallas and Houston, Texas; Bethesda and Baltimore, Maryland; Padua, Pesaro, and Milan, Italy; Cleveland, Ohio; Rochester, Minnesota; Zurich, Switzerland; New York, New York; Essen and Rostock, Germany; Boston, Massachusetts; Ann Arbor, Michigan; New Haven, Connecticut; Paris and Toulouse, France; and Brugge, Belgium (J Am Soc Echocardiogr 2015;28:119-82.) TABLE OF CONTENTS Preamble 121 B. How to Measure the Aorta 124 I. Anatomy and Physiology of the Aorta 121 1. Interface, Definitions, and Timing of Aortic Measure- A. The Normal Aorta and Reference Values 121 ments 124 1. -
Blood Vessels
BLOOD VESSELS Blood vessels are how blood travels through the body. Whole blood is a fluid made up of red blood cells (erythrocytes), white blood cells (leukocytes), platelets (thrombocytes), and plasma. It supplies the body with oxygen. SUPERIOR AORTA (AORTIC ARCH) VEINS & VENA CAVA ARTERIES There are two basic types of blood vessels: veins and arteries. Veins carry blood back to the heart and arteries carry blood from the heart out to the rest of the body. Factoid! The smallest blood vessel is five micrometers wide. To put into perspective how small that is, a strand of hair is 17 micrometers wide! 2 BASIC (ARTERY) BLOOD VESSEL TUNICA EXTERNA TUNICA MEDIA (ELASTIC MEMBRANE) STRUCTURE TUNICA MEDIA (SMOOTH MUSCLE) Blood vessels have walls composed of TUNICA INTIMA three layers. (SUBENDOTHELIAL LAYER) The tunica externa is the outermost layer, primarily composed of stretchy collagen fibers. It also contains nerves. The tunica media is the middle layer. It contains smooth muscle and elastic fiber. TUNICA INTIMA (ELASTIC The tunica intima is the innermost layer. MEMBRANE) It contains endothelial cells, which TUNICA INTIMA manage substances passing in and out (ENDOTHELIUM) of the bloodstream. 3 VEINS Blood carries CO2 and waste into venules (super tiny veins). The venules empty into larger veins and these eventually empty into the heart. The walls of veins are not as thick as those of arteries. Some veins have flaps of tissue called valves in order to prevent backflow. Factoid! Valves are found mainly in veins of the limbs where gravity and blood pressure VALVE combine to make venous return more 4 difficult. -
Fetal Descending Aorta/Umbilical Artery Flow Velocity Ratio in Normal Pregnancy at 36-40 Weeks of Gestational Age Riyadh W Alessawi1
American Journal of BioMedicine AJBM 2015; 3(10):674 - 685 doi:10.18081/2333-5106/015-10/674-685 Fetal descending aorta/umbilical artery flow velocity ratio in normal pregnancy at 36-40 Weeks of gestational age Riyadh W Alessawi1 Abstract Doppler velocimetry studies of placental and aortic circulation have gained a wide popularity as it can provide important information regarding fetal well-being and could be used to identify fetuses at risk of morbidity and mortality, thus providing an opportunity to improve fetal outcomes. Prospective longitudinal study conducted through the period from September 2011–July 2012, 125 women with normal pregnancy and uncomplicated fetal outcomes were recruited and subjected to Doppler velocimetry at different gestational ages, from 36 to 40 weeks. Of those, 15 women did not fulfill the protocol inclusion criteria and were not included. In the remaining 110 participants a follow up study of Fetal Doppler velocimetry of Ao and UA was performed at 36 – 40 weeks of gestation. Ao/UA RI: 1.48±0.26, 1.33±0.25, 1.37± 0.20, 1.28±0.07 and 1.39±0.45 respectively and the 95% confidence interval of the mean for five weeks 1.13-1.63. Ao/UA PI: 2.83±2.6, 1.94±0.82, 2.08±0.53, 1.81± 0.12 and 3.28±2.24 respectively. Ao/UA S/D: 2.14±0.72, 2.15±1.14, 1.75±0.61, 2.52±0.18 and 2.26±0.95. The data concluded that a nomogram of descending aorto-placental ratio Ao/UA, S/D, PI and RI of Iraqi obstetric population was established. -
Inferior Phrenic Artery, Variations in Origin and Clinical Implications – a Case Study
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS) E-ISSN: 2279-0853, p-ISSN: 2279-0861. Volume 7, Issue 6 (Mar.- Apr. 2013), PP 46-48 www.iosrjournals.org Inferior Phrenic Artery, Variations in Origin and Clinical Implications – A Case Study 1 2 3 Dr.Anupama D, Dr.R.Lakshmi Prabha Subhash .Dr. B.S Suresh Assistant Professor. Dept. Of Anatomy, SSMC. Tumkur.Karnataka.India Professor & HOD. Dept. Of Anatomy, SSMC. Tumkur.Karnataka.India Associate professor.Dept. Of Anatomy, SSMC. Tumkur.Karnataka.India Abstract:Variations in the branching pattern of abdominal aorta are quite common, knowledge of which is required to avoid complications during surgical interventions involving the posterior abdominal wall. Inferior Phrenic Arteries, the lateral aortic branches usually arise from Abdominal Aorta ,just above the level of celiac trunk. Occasionally they arise from a common aortic origin with celiac trunk, or from the celiac trunk itself or from the renal artery. This study describes the anomalous origin of this lateral or para aortic branches in the light of embryological and surgical basis. Knowledge of such variations has important clinical significance in abdominal operations like renal transplantation, laparoscopic surgery, and radiological procedures in the upper abdomen or invasive arterial procedures . Keywords: Abdominal Aorta, Celiac Trunk(Ct), Diaphragm, Inferior Phrenic Artery (Ipa), Retro Peritoneal, Renal Artery(Ra). I. Introduction The abdominal aorta begins from the level of 12th thoracic vertebra after passing through the Osseo aponeurotic hiatus of diaphragm. It courses downwards with Inferior vena cava to its right and terminates at the level of 4th lumbar vertebra by dividing in to two terminal branches. -
Superior Mesenteric Artery and Nutcracker Syndromes in a Healthy 14-Year-Old Girl Requiring Surgical Intervention After Failed Conservative Management
ISSN 2377-8369 GASTRO Open Journal Case Report Superior Mesenteric Artery and Nutcracker Syndromes in a Healthy 14-Year-Old Girl Requiring Surgical Intervention after Failed Conservative Management David Wood, MRCPCH, MSc1; Andrew Fagbemi, FRCPCH2; Loveday Jago, MRCPCH2; Dalia Belsha, MRCPCH2; Nick Lansdale, FRCS, PhD3; Ahmed Kadir, FRCPCH, MSc2* 1Paediatric Registrar, Royal Manchester Children’s Hospital, Manchester, UK 2Paediatric Gastroenterology Consultant, Royal Manchester Children’s Hospital, Manchester, UK 3Paediatric Surgeon, Royal Manchester Children’s Hospital, Manchester, UK *Corresponding author Ahmed Kadir, FRCPCH, MSc Paediatric Gastroenterology Consultant, Royal Manchester Children’s Hospital, Manchester, UK; Phone. 07709732356; E-mail: [email protected] Article information Received: January 30th, 2020; Revised: February 17th, 2020; Accepted: February 24th, 2020; Published: February 28th, 2020 Cite this article Wood D, Fagbemi A, Jago L, Belsha D, Lansdale N, Kadir A. Superior mesenteric artery and nutcracker syndromes in a healthy 14-year-old girl requiring surgical intervention after failed conservative management. Gastro Open J. 2020; 5(1): 1-3. doi: 10.17140/GOJ-5-132 ABSTRACT This case report presents the diagnosis of superior mesenteric artery and nutcracker syndromes in a previously fit and well 14-year- old girl. Although these two entities usually occur in isolation, despite their related aetiology, our patient was a rare example of their occurrence together. In this case the duodenal compression of superior mesenteric artery syndrome caused intractable vom- iting leading to weight loss, and her nutcracker syndrome caused severe left-sided abdominal pain and microscopic haematuria without renal compromise. Management of the superior mesenteric artery syndrome can be conservative by increasing the weight of the child which leads to improvement of retroperitoneal fat and hence the angle of the artery. -
Normal and Variant Origin and Branching Pattern of Inferior Phrenic Arteries and Their Clinical Implications: a Cadaveric Study
International Journal of Research in Medical Sciences Thamke S et al. Int J Res Med Sci. 2015 Jan;3(1):282-286 www.msjonline.org pISSN 2320-6071 | eISSN 2320-6012 DOI: 10.5455/2320-6012.ijrms20150151 Research Article Normal and variant origin and branching pattern of inferior phrenic arteries and their clinical implications: a cadaveric study Swati Thamke1*, Pooja Rani2 1Department of Anatomy, UCMS & GTB Hospital, Delhi, India 2Department of Anatomy, PGIMS, Rohtak, Haryana, India Received: 6 December 2014 Accepted: 18 December 2014 *Correspondence: Dr. Swati Thamke, E-mail: [email protected] Copyright: © the author(s), publisher and licensee Medip Academy. This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. ABSTRACT Background: Inferior phrenic arteries, which constitute the chief arterial supply to the diaphragm, are generally the branches of abdominal aorta, however, variations in their mode of origin is not uncommon. Very less information is available regarding the functional anatomy of the inferior phrenic artery in anatomy textbooks. Methods: The present study was conducted utilizing 36 formaline-fixed cadavers between 22 years to 80 years over a period of 5 years. The frequency and anatomical pattern of the origin of the right and left inferior phrenic arteries were studied. Results: On the right side, the inferior phrenic artery arose independently from abdominal aorta in 94.4% cases and on the left side in 97.2% cases.Other sources of origin were seen in 5.55% cases. -
An Arteriographic Study of Mesenteric Arterial Disease I Large Vessel Changes
Gut, 1967, 8, 206 Gut: first published as 10.1136/gut.8.3.206 on 1 June 1967. Downloaded from An arteriographic study of mesenteric arterial disease I Large vessel changes A. P. DICK, R. GRAFF, D. McC. GREGG, N. PETERS1, AND M. SARNER5 From Addenbrooke's Hospital, Cambridge EDITORIAL COMMENT This is an important study of large vessel changes causing chronic arterial insufficiency of the intestines. Symptoms of intestinal ischaemia have not been seen in this series in patients in whom the cross-sectional area of the arteries was greater than two-thirds of the normal. Arteriography is demonstrated as a valuable procedure in assessing the possibility of intestinal ischaemia as a cause of symptoms. The diagnosis ofarterial insufficiency ofthe intestines describing some of the abnormal findings which may as the cause of abdominal pain can be a matter of be demonstrated on mesenteric arteriography. considerable difficulty. A classical story of cramping, The physiological background of the clinical upper and central abdominal pain, worse after meals, problem of intestinal ischaemia has been well re- particularly if large or if followed by exercise, is by viewed by Hedberg and Kirsner (1965). Practical no means always obtained. Other features recorded importance is lent to the present study by the as occurring in this syndrome, such as chronic numerous reports of the successful treatment of both and of and diarrhoea, a malabsorption syndrome relief acute chronic intestinal ischaemia which have http://gut.bmj.com/ pain by assuming the knee-elbow position, are so appeared in the past 10 years. These include surgical seldom observed as to be of little diagnostic help. -
A Review of the Distribution of the Arterial and Venous Vasculature of the Diaphragm and Its Clinical Relevance
Folia Morphol. Vol. 67, No. 3, pp. 159–165 Copyright © 2008 Via Medica R E V I E W A R T I C L E ISSN 0015–5659 www.fm.viamedica.pl A review of the distribution of the arterial and venous vasculature of the diaphragm and its clinical relevance M. Loukas1, El-Z. Diala1, R.S. Tubbs2, L. Zhan1, P. Rhizek1, A. Monsekis1, M. Akiyama1 1Department of Anatomical Sciences, School of Medicine, St. George’s University, Grenada, West Indies 2Section of Pediatric Neurosurgery, Children’s Hospital, Birmingham, AL, USA [Received 14 January 2008; Accepted 25 April 2008] The diaphragm is the major respiratory muscle of the body. As it plays such a vital role, a continuous arterial and venous blood supply is of the utmost importance. It is therefore not surprising to find described in the literature a complex system of anastomoses that contributes to the maintenance of this muscle’s life-preserving contraction. Understanding the anatomy of the dia- phragm and any divergence in its vasculature is literally vital to humanity. In the light of this, we review the literature on the blood supply to the diaphragm, with specific emphasis on the recent description of the inferior phrenic vessels and the superior phrenic artery, summarize the clinical significance of the dia- phragmatic vasculature and suggest future avenues of study to further expand on this current body of knowledge. (Folia Morphol 2008; 67: 159–165) Key words: diaphragm, hepatocellular carcinoma, inferior phrenic artery, superior phrenic artery INTRODUCTION aneurysm, transcatheter arterial embolism, and di- In view of the diaphragm’s current standing as gestive pathologies. -
Atypical Coarctation of Aorta
Atypical coarctation of aorta Authors: Professor Harald Kaemmerer1 and Doctor Alfred Hager Creation Date: January 2003 Scientific Editor: Professor Marie-Christine Seghaye 1Department of pediatric cardiology, Deutsches Herzzentrum München, Lazarettstr. 36, 80636 München, Germany. [email protected] Abstract Keywords Disease name and synonyms Definition Frequency Clinical presentation Etiology Diagnostic methods Treatment References Abstract Atypical coarctation of aorta (CoA) is characterized by localized or extended narrowing of the ascending aorta, of the descending thoracic aorta at the level of the diaphragm, or of the abdominal aorta. Symptoms are attributed to upper body arterial hypertension and may include headache, abdominal angina, leg fatigue at exercise, cold feet and intermittent claudication. A pressure difference between arms and legs may exist as it is the case for the isthmic CoA. A systolic vascular murmur can be heard over the region of stenosis. This disease is often caused by an arteritis (Takayasu arteritis or aortitis) or a fibromuscular dysplasia. Some forms may be congenital. It can be associated with neurofibromatosis such as von Recklinghausen disease or Williams syndrome. This rare condition affects 0.5% to 2% of individuals with CoA. The symptomatic treatment consists of antihypertensive medication. The causal treatment is either percutaneous transluminal angioplasty with or without endovascular stent placement or surgery. Keywords Coarctation, aortic isthmus, atypical, ectopic, Takayasu arteritis, neurofibromatosis (Recklinghausen disease), Williams syndrome, rubella syndrome, tuberous sclerosis, Alagille syndrome. Disease name and synonyms Atypical CoA is characterized by a localized or • Atypical coarctation of the aorta extended narrowing of the ascending aorta, of • Coarctation of the abdominal aorta the descending thoracic aorta at the level of the • Middle aortic syndrome diaphragm or of the abdominal aorta. -
Coarctation of the Aorta: from Fetal Life to Adulthood
Cardiology Journal 2011, Vol. 18, No. 5, pp. 487–495 10.5603/CJ.2011.0003 Copyright © 2011 Via Medica REVIEW ARTICLE ISSN 1897–5593 Coarctation of the aorta: From fetal life to adulthood Damien Kenny, Ziyad M. Hijazi Rush Center for Congenital and Structural Heart Disease, Rush University Medical Center, Chicago, IL, USA Abstract Coarctation of the aorta was once viewed as a simple discrete narrowing of the aortic isthmus that could be ‘cured’ by surgical intervention. It is now clear that this condition may: (1) affect the aortic arch in a highly variable manner; (2) be associated with a host of other left sided heart lesions; (3) represent a wider vasculopathy within the pre-coarctation arterial tree, leading to significant prevalence of hypertension by adolescence, and subsequent risk of early morbidity and death. This review outlines the evaluation and treatment of this disease from pre-natal to adult life. (Cardiol J 2011; 18, 5: 487–495) Key words: surgery, echocardiography, stenting, hypertension, vasculopathy Introduction Coarctation of the aorta (CoA) is the fifth most common congenital heart defect, accounting for 6–8% of live births with congenital heart disease, with an estimated incidence of 1 in 2,500 births [1–3]. It is likely that the incidence is higher in stillborn babies [4]. It affects more male babies than female, with a reported ratio in males of between 1.27:1 and 1.74:1 [5, 6]. It usually manifests as a discrete con- striction of the aortic isthmus (Fig. 1). However, it is more likely to represent a spectrum of aortic nar- rowing from this discrete entity to tubular hypopla- sia, with many variations seen in between these two extremes. -
The Aorta, and Pulmonary Blood Flow
Br Heart J: first published as 10.1136/hrt.36.5.492 on 1 May 1974. Downloaded from British HeartJournal, I974, 36, 492-498. Relation between fetal flow patterns, coarctation of the aorta, and pulmonary blood flow Elliot A. Shinebourne and A. M. Elseed From the Department of Paediatrics, Brompton Hospital, National Heart and Chest Hospitals, London Intracardiac anomalies cause disturbances in fetal flow patterns which in turn influence dimensions of the great vessels. At birth the aortic isthmus, which receives 25 per cent of the combinedfetal ventricular output, is normally 25 to 30 per cent narrower than the descending aorta. A shelf-like indentation of the posterior aortic wall opposite the ductus characterizes thejunction of the isthmus with descending aorta. In tetralogy ofFallot, pulmonary atresia, and tricuspid atresia, when pulmonary blood flow is reduced from birth, the main pul- monary artery is decreased and ascending aorta increased in size. Conversely in intracardiac anomalies where blood is diverted away from the aorta to the pulmonary artery, isthmal narrowing or the posterior indentation may be exaggerated. Analysis of I62 patients with coarctation of the aorta showed 83 with an intracardiac anomaly resulting in increased pulmonary bloodflow and 21 with left-sided lesions present from birth. In contrast no patients with coarctation were found with diminished pulmonary flow or right-sided obstructive lesions. From this evidence the hypothesis is developed that coarctation is prevented whenflow in the main pulmonary artery is reduced in thefetus. http://heart.bmj.com/ The association of coarctation with left-sided establishing the complete intracardiac diagnosis in I62 obstructive lesions such as mitral and aortic stenosis patients with coarctation.