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Fetal Tachycardia

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81. Congenital paroxysmal atrial tachycardia. Full Text available with Trip Pro

Congenital paroxysmal atrial tachycardia. Ten infants who had paroxysmal atrial tachycardia in utero or at birth are reported. Because of apparent fetal distress, caesarean section was performed in 4 cases and labour was induced in 1. Birthweight was generally large for gestational age. Severe ascites and hydrops at birth were manifestations of cardiac failure. Atrial flutter was recorded in 4 infants and supraventricular tachycardia in 5. The WoLff-Parkinson-White syndrome became evident later (...) in 2. Digoxin was given to all 10 infants, and cardioversion was required and was effective in 4. Known recurrences in childhood have occurred in only 1 patient. Congenital atrial tachyarrhythmias may be commoner than generally believed, and fetal electrocardiography may help to avoid unnecessary termination of pregnancy. Blood sugar determinations are important, since neonatal hypoglycaemia was found. Cardioversion should be performed promptly in severely ill infants or if there is no response

1976 Archives of Disease in Childhood

82. Multifocal atrial tachycardia in two neonates. Full Text available with Trip Pro

Multifocal atrial tachycardia in two neonates. Two neonates with rapid and irregular pulse rate had an uncommon form of atrial tachycardia. The irregular heart rate was first detected during fetal monitoring. Postnatal electrocardiograms were compatible with the diagnosis of multifocal atrial tachycardia or chaotic atrial rhythm. Both patients were treated with digoxin and the rhythm gradually reverted to sinus. This may represent the first description of multifocal atrial tachycardia

1977 British Heart Journal

83. Fetal arrhythmias associated with cardiac rhabdomyomas. Full Text available with Trip Pro

Fetal arrhythmias associated with cardiac rhabdomyomas. Primary heart tumors in fetuses are rare and mainly represent rhabdomyomas. The tumors have a variable expression and can be associated with arrhythmias, including both wide and narrow QRS tachycardia. Although multiple Doppler techniques exist to assess fetal heart rhythm, it can be difficult to record precise electrophysiological abnormalities in fetal life.Investigations defining precise electrophysiological diagnosis were performed (...) by using fetal magnetocardiography (fMCG).In addition to routine fetal echocardiography, fMCG was used to investigate electrophysiological rhythm patterns in a series of 10 fetuses with cardiac rhabdomyomas.The mean gestational age of the fetuses was 28.6 ± 4.7 weeks. The multiple rhabdomyomas were mainly located in the right and left ventricles as well as around the atrioventricular groove. Arrhythmias or conduction abnormalities were diagnosed in all 10 patients, although only 6 of them were referred

2014 Heart Rhythm

84. Tachycardia-Induced Cardiomyopathy After Functional Closure of the Foramen Ovale in a Fetus. (Abstract)

Tachycardia-Induced Cardiomyopathy After Functional Closure of the Foramen Ovale in a Fetus. Although fetal tachyarrhythmias are relatively rare, they are an important causes of fetal morbidity and mortality. We report a 30-week pregnant woman with fetal tachycardia, fetal hydrops and ascites. Fetal heart rate was 230 bpm. Fetal heart rate was 230 bpm. M-mode echocardiography revealed a tachycardia with a 1:1 relationship between atrial and ventricular conduction and a short time interval (...) between ventricular and atrial contraction. These findings suggested a diagnosis of atrioventricular re-entrant tachycardia. On the third day digoxin treatment, the fetal heart rate was still 225 bpm with a 1:1 relationship between atrial and ventricular conduction. At this time, no flow across the foramen ovale was detected. Functional closure of the foramen ovale was suspected.

2011 Pediatric Cardiology

85. Fetal and Neonatal Magnetophysiology

pregnancies; 120 will be pregnant women with pregnancies complicated by fetal arrhythmia or a condition that puts the fetus at risk of fetal arrhythmia. We refer to these cases as "high-risk" due to the presence of or risk of arrhythmia to the fetus. The pregnant mothers will be age 18 or older. They will be studied as early as 15 weeks' gestation and may be asked to return, if their physician determines that additional fMCG studies are necessary. Criteria Inclusion Criteria: Normal subjects: normal (...) , healthy adult women with uncomplicated pregnancies High-risk cohort: The primary inclusion criterion is diagnosis of serious fetal arrhythmia, which is defined as sustained low or high heart rate. Low heart rate, or bradycardia, and high heart rate, or tachycardia, are based on normative values for gestation (usually below 110 -120 beats/min, or above 160-180 beats/min). Intermittent bradycardia and tachycardia are also important to detect because these arrhythmias may become incessant over the course

2013 Clinical Trials

86. Risk Factors for Maternal and Fetal Outcome in Pregnancy Complicated with Ebstein Anomaly. (Abstract)

died of prematurity in the third case. In all other cases (20 of 21), neonatal prognoses were good without congenital heart diseases. There were 6 spontaneous abortions. Recurrent paroxysmal supraventricular tachycardia occurred during pregnancy in 2 cases and was treated with adenosine triphosphate or verapamil. In 17 pregnancies, NYHA remained in class I and all had full-term vaginal delivery.Maternal and fetal outcomes are good in patients with Ebstein anomaly and NYHA class I. However (...) Risk Factors for Maternal and Fetal Outcome in Pregnancy Complicated with Ebstein Anomaly. The goal of the study was to examine risks in pregnancy in patients with Ebstein anomaly.Data were examined retrospectively for 13 patients (27 pregnancies, 21 live births) with Ebstein anomaly during pregnancy who were treated at our institution from 1985 to 2011. The associated anomalies in these patients were atrial septal defect (ASD) (n = 4) and the Wolff-Parkinson-White syndrome (n = 6).Before

2013 American Journal of Obstetrics and Gynecology

87. Fetal and neonatal atrial arrhythmias: an association with maternal diabetes and neonatal macrosomia. Full Text available with Trip Pro

Fetal and neonatal atrial arrhythmias: an association with maternal diabetes and neonatal macrosomia. To determine if the incidence of maternal diabetes mellitus or neonatal macrosomia is more frequent in fetuses and neonates with atrial arrhythmias than the general population.Fetuses and neonates <30 days of age with atrial flutter or ectopic atrial tachycardia and structurally normal hearts were identified retrospectively through the cardiology databases. Electrocardiograms, echocardiograms (...) with atrial flutter or ectopic atrial tachycardia were more likely to be macrosomic or be born to diabetic mothers than the general population. Postnatal echocardiography suggests that there may be abnormal diastolic left ventricular filling in some babies with these arrhythmias. Independent of ventricular hypertrophy, we speculate that isolated, non-recurrent fetal or neonatal atrial flutter, or ectopic atrial tachycardia may be caused by cardiac diastolic dysfunction and atrial stretch in utero.© 2013

2013 Prenatal diagnosis

88. Maternal Autoimmune Thyroid Disease and Fetal Thyroxin

a patient. Monitoring fetal growth, fetal heart rate (tachycardia is a late sign of fetal hyperthyroidism), bone maturation and the size of the fetal thyroid by ultrasound are important parameters for the assessment of transfer of hyperthyroidism from mother to the fetus Patients follow up: After inclusion into the study, thyroid function tests (fT4, TSH), and auto-antibodies assessment (anti TPO, TRAK) were performed once every two months in mothers with AITD, and from the 24th week of gestation (...) Maternal Autoimmune Thyroid Disease and Fetal Thyroxin Maternal Autoimmune Thyroid Disease and Fetal Thyroxin - Full Text View - ClinicalTrials.gov Hide glossary Glossary Study record managers: refer to the if submitting registration or results information. Search for terms x × Study Record Detail Saved Studies Save this study Warning You have reached the maximum number of saved studies (100). Please remove one or more studies before adding more. Maternal Autoimmune Thyroid Disease and Fetal

2012 Clinical Trials

89. Fetal Right-Ventricular Hypertrophy With Pericardial Effusion and Maternal Untreated Hyperthyroidism. (Abstract)

Fetal Right-Ventricular Hypertrophy With Pericardial Effusion and Maternal Untreated Hyperthyroidism. Uncontrolled/untreated maternal hyperthyroidism has been associated with fetal tachycardia. We report a case of right-ventricular (RV) hypertrophy with pericardial effusion related to untreated maternal Graves' disease. A 33-year-old G4P1021 woman with uncontrolled Graves' disease presented at 29 weeks gestation with abdominal pain and vaginal bleeding. Fetal echocardiogram showed severe RV (...) hypertrophy and a pericardial effusion. The infant was born prematurely, and initial transthoracic echocardiogram showed severe RV hypertrophy and a small pericardial effusion. The infant had clinical findings consistent with congenital thyrotoxicosis and was treated for this. Follow-up imaging at 4 weeks showed improvement of the cardiac hypertrophy and pericardial effusion. This article describes the presentation of fetal RV hypertrophy with congenital thyrotoxicosis and underscores the importance

2012 Pediatric Cardiology

90. β-Adrenoceptive responses in the unanaesthetized ovine foetus Full Text available with Trip Pro

β-Adrenoceptive responses in the unanaesthetized ovine foetus 1. Isoprenaline injection into either the unanaesthetized ovine foetus or the pregnant ewe produced a transient tachycardia and hypotension in either the ewe or the foetus. No evidence was obtained for placental transfer, in either direction, of pharmacologically active isoprenaline.2. Propranolol, when given to the ewe intravenously, produced bradycardia and increased pulse pressure and inhibited the response of both the ewe (...) and her foetus to isoprenaline. Propranolol, when given to the foetus intravenously, produced bradycardia and increased pulse pressure in both the foetus and the ewe, but only the foetal response to isoprenaline was inhibited. These data demonstrated that propranolol crossed the ovine placenta in both directions in a pharmacologically active form.3. Dose-heart rate curves of the foetus and pregnant ewe to isoprenaline and the shift to the right of the isoprenaline dose-response curves by propranolol

1970 British journal of pharmacology

91. Foetal respiratory movements, electrocortical and cardiovascular responses to hypoxaemia and hypercapnia in sheep Full Text available with Trip Pro

Foetal respiratory movements, electrocortical and cardiovascular responses to hypoxaemia and hypercapnia in sheep 1. Foetal breathing movements, electrocortical activity, arterial pressure and heart rate were recorded continuously in chronically catheterized sheep, 97-145 days pregnant.2. With increasing gestational age there was a fall in heart rate of 0.67 beats/day and a rise in arterial pressure of 0.46 mmHg/day.3. Hypoxaemia in the foetus was induced by allowing the ewe to breathe low (...) oxygen mixtures, 9% O(2) with 3% CO(2) in N(2). In the younger foetuses there was an initial rise in heart rate whereas in the older foetuses there was a fall. After the end of hypoxia there was a persistent tachycardia in both groups. In the older foetuses there was a rise of arterial pressure.4. Two vagotomized older foetuses showed cardiovascular responses similar to those of the younger foetuses.5. Foetal breathing movements were abolished by hypoxaemia in twenty-two of twenty-five experiments

1974 The Journal of physiology

92. Responsiveness to glucagon in fetal hearts. Species variability and apparent disparities between changes in beating, adenylate cyclase activation, and cyclic AMP concentration. Full Text available with Trip Pro

in the concentration of cyclic AMP in spontaneously beating hearts that developed tachycardia. Responses in hearts of fetal rats were distinctly different from those in mouse hearts: at no age was there any change in heart rate, strength of contraction, glycogen content, or adenylate cyclase activation. Thus, there are major species differences in cardiac pharmacological maturation. Although the mouse heart develops the ability to increase its rate and strength of contraction and to undergo glycogenolysis (...) Responsiveness to glucagon in fetal hearts. Species variability and apparent disparities between changes in beating, adenylate cyclase activation, and cyclic AMP concentration. Previous studies of the ability of the immature heart to respond to glucagon have yielded conflicting results. To test the possibility that the apparent discrepancies might be explained in part by species variability, isolated hearts of fetal mice and rats (13-22 days' gestational age) were studied under identical

1976 Journal of Clinical Investigation

93. The composition of foetal and maternal blood during parturition in the ewe Full Text available with Trip Pro

The composition of foetal and maternal blood during parturition in the ewe 1. Changes in the composition of foetal and maternal blood have been followed during the last 5-10 days of gestation and throughout parturition in the conscious sheep.2. Catheters were placed in the foetal inferior vena cava through a tarsal vein and in a maternal uterine vein in ten ewes under sodium pentobarbitone anaesthesia. In four of the foetuses blood pressure and heart rates were recorded before and during (...) parturition from an arterial catheter.3. Foetal blood gas tensions, pH and PCV remained stable during the latter part of gestation and throughout labour until 15 min before delivery, when P(O) (2) and pH fell while PCV and P(CO) (2) rose in about 50% of the foetuses examined.4. Metabolite levels were also relatively stable at the end of gestation. Plasma glucose in both maternal and foetal blood rose during the hour before birth, while foetal plasma lactate was elevated as early as 4 hr before birth

1972 The Journal of physiology

94. Maturation of Responsiveness to Cardioactive Drugs: DIFFERENTIAL EFFECTS OF ACETYLCHOLINE, NOREPINEPHRINE, THEOPHYLLINE, TYRAMINE, GLUCAGON, AND DIBUTYRYL CYCLIC AMP ON ATRIAL RATE IN HEARTS OF FETAL MICE Full Text available with Trip Pro

innervation is fairly well developed, suggesting that the drug's primary sympathomimetic effect is indirect rather than direct. Dibutyryl cyclic AMP did not cause tachycardia at any fetal age. It is concluded that maturation of responsiveness of the mouse heart to cardioactive drugs develops in specific patterns for different agents. The identification of differential patterns of maturation for various drugs may provide valuable means for characterizing the differentiation of specific receptors (...) Maturation of Responsiveness to Cardioactive Drugs: DIFFERENTIAL EFFECTS OF ACETYLCHOLINE, NOREPINEPHRINE, THEOPHYLLINE, TYRAMINE, GLUCAGON, AND DIBUTYRYL CYCLIC AMP ON ATRIAL RATE IN HEARTS OF FETAL MICE Freshly isolated hearts of fetal mice of gestational ages ranging between 12 and 22 days (term) were exposed to several concentrations of a variety of chronotropic agents. Acetylcholine (10(-4)-10(-2) M) caused marked bradycardia in all hearts, even after only 12-14 days' gestation (i.e., even

1973 Journal of Clinical Investigation

95. Vasomotor responses in the hind limbs of foetal and new-born lambs to asphyxia and aortic chemoreceptor stimulation Full Text available with Trip Pro

were used to localize possible chemoreceptor sites in foetal lambs. Injection into the left atrium caused a rise of arterial pressure, femoral vasoconstriction and a complex change in heart rate (usually bradycardia) but rarely any respiratory movement. After atropine, cyanide caused a large tachycardia. All responses were much reduced or abolished by cervical vagotomy.4. Injection of the same doses of cyanide into a jugular vein, the right ventricle, pulmonary or common carotid arteries of foetal (...) Vasomotor responses in the hind limbs of foetal and new-born lambs to asphyxia and aortic chemoreceptor stimulation 1. Hind limb blood flow was measured in lambs of from 91 days gestation (delivered by Caesarean section) to 1 month after birth (term is about 147 days), under chloralose anaesthesia. Vascular resistance/100 g wet wt. increased progressively with age. There was reflex femoral vascular tone from the earliest age studied, as shown by vasodilatation on cutting the sciatic nerve.2

1968 The Journal of physiology

96. Changes in O2 distribution and consumption in foetal lambs with variations in umbilical blood flow Full Text available with Trip Pro

Artery Fetus Hemorrhage Hypoxia Lactates Oximetry Pregnancy Research Sheep Tachycardia Umbilical Cord Umbilical Veins ANOXEMIA BLOOD BLOOD CIRCULATION BLOOD PRESSURE CAROTID ARTERIES CESAREAN SECTION EXPERIMENTAL LAB STUDY FEMORAL ARTERY FETUS HEMORRHAGE LACTATES OXIMETRY SHEEP TACHYCARDIA UMBILICAL CORD UMBILICAL VEINS 1964 4 1 1964 4 1 0 1 1964 4 1 0 0 ppublish 14165693 PMC1368688 J Physiol. 1940 Jan 15;97(3):338-46 16995167 Circ Res. 1962 Sep;11:423-30 13965273 J Physiol. 1959 May 19;146(2):295 (...) Changes in O2 distribution and consumption in foetal lambs with variations in umbilical blood flow 14165693 1996 12 01 2018 12 01 0022-3751 170 1964 Apr The Journal of physiology J. Physiol. (Lond.) CHANGES IN O2 DISTRIBUTION AND CONSUMPTION IN FOETAL LAMBS WITH VARIATIONS IN UMBILICAL BLOOD FLOW. 524-40 DAWES G S GS MOTT J C JC eng Journal Article England J Physiol 0266262 0022-3751 0 Lactates OM Animals Blood Blood Circulation Blood Pressure Carotid Arteries Cesarean Section Female Femoral

1964 The Journal of physiology

97. Use of Low-molecular-weight Dextran in Management of Foetal Distress in Labour Full Text available with Trip Pro

Use of Low-molecular-weight Dextran in Management of Foetal Distress in Labour 14185656 1996 12 01 2018 12 01 0007-1447 2 5414 1964 Oct 10 British medical journal Br Med J USE OF LOW-MOLECULAR-WEIGHT DEXTRAN IN MANAGEMENT OF FOETAL DISTRESS IN LABOUR. 909-10 JONES J B JB eng Journal Article England Br Med J 0372673 0007-1447 0 Dextrans OM Bradycardia Dextrans Female Fetal Diseases Fetal Distress Fetal Heart Humans Infant Mortality Labor, Obstetric Maternal Mortality Maternal-Fetal Exchange (...) Obstetric Labor Complications Postpartum Hemorrhage Postpartum Period Pregnancy Pulmonary Embolism Tachycardia BRADYCARDIA DEXTRAN FETAL DISEASES FETAL HEART HEMORRHAGE, POSTPARTUM INFANT MORTALITY LABOR COMPLICATIONS MATERNAL MORTALITY MATERNAL-FETAL EXCHANGE PREGNANCY PULMONARY EMBOLISM TACHYCARDIA 1964 10 10 1964 10 10 0 1 1964 10 10 0 0 ppublish 14185656 PMC1816867 Surgery. 1961 Jul;50:12-28 13763318 Bull Soc Int Chir. 1961 Oct-Dec;20:623-32 13867637 Acta Chir Scand. 1961 Nov;122:294-302 13897606

1964 British medical journal

98. THE EFFECTS OF SPINAL ANESTHESIA ON THE FETAL HEART RATE Full Text available with Trip Pro

THE EFFECTS OF SPINAL ANESTHESIA ON THE FETAL HEART RATE The effect of spinal anesthesia on fetal heart rate is due to maternal hypotension and subsequent fetal hypoxia. Maternal hypotension of 80 mm of mercury for five minutes almost always results in hypoxic fetal bradycardia. This bradycardia is gradual in onset, and may be preceded by a short period of fetal tachycardia. There is a lag in the return of fetal heart rate to normal after maternal blood pressure has normalized. Similar

1963 California Medicine

99. Reversible Atrioventricular Block and Junctional Ectopic Tachycardia in Coxsackievirus B3-Induced Fetal–Neonatal Myocarditis without Left Ventricular Dysfunction Full Text available with Trip Pro

Reversible Atrioventricular Block and Junctional Ectopic Tachycardia in Coxsackievirus B3-Induced Fetal–Neonatal Myocarditis without Left Ventricular Dysfunction We present a case of fetal-neonatal acute myocarditis caused by coxsackievirus B3 infection in a term neonate. The condition manifested as high-grade atrioventricular (A-V) block prenatally. After delivery, various arrhythmias such as high-grade A-V block, ventricular tachycardia, and junctional ectopic tachycardia appeared, and we (...) had difficulty managing these arrhythmias. This is the first report describing a case of acute myocarditis due to coxsackievirus infection presenting with fetal A-V block. This case is also unique in that it is extremely rare that various arrhythmias occur serially in one patient without left ventricular dysfunction.

2011 AJP Reports

100. Intrapartum care for women with existing medical conditions or obstetric complications and their babies

Regional anaesthesia and analgesia for women with bleeding disorders 68 Modifying the birth plan according to platelet count or function 69 Management of the third stage of labour for women with bleeding disorders 70 Mode of birth and management of the second stage of labour for women with subarachnoid haemorrhage or arteriovenous malformation of the brain 70 Fluid management for women with kidney disease 72 Timing and mode of birth for women with kidney disease 73 Assessing fetal presentation early (...) in labour for women with a BMI over 30 74 Anaesthesia and analgesia for women with a BMI over 30 75 Fetal monitoring for women with a BMI over 30 75 Position in labour for women with a BMI over 30 76 Equipment needs for women in labour with a BMI over 30 77 Intrapartum care for women with existing medical conditions or obstetric complications and their babies (NG121) © NICE 2019. All rights reserved. Subject to Notice of rights (https://www.nice.org.uk/terms-and- conditions#notice-of-rights). Last

2019 National Institute for Health and Clinical Excellence - Clinical Guidelines

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