Annalie Houston

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During an 8-month period, 86 consecutive infants and children under 2 years of age underwent palliative or corrective cardiac surgery, of whom 11 subsequently developed phrenic nerve injury (PNI). This was seen most frequently following classic or modified Blalock-Taussig shunts. The diagnosis was established by ultrasound screening of the diaphragm, and(More)
Interobserver reproducibility in deriving cardiac output by measuring aortic blood flow velocity and diameter with imaging and Doppler ultrasound was investigated in 20 healthy infants born at full term. Aortic diameter was measured in three ways. Mean blood flow velocity was measured at three sites with both continuous wave and pulsed Doppler. Two(More)
OBJECTIVE To examine autonomic function as assessed by heart rate variability in patients 10 or more years after repair of tetralogy of Fallot, and to relate this to cardiac structure, function, and electrocardiographic indices. METHODS Heart rate variability was measured by standard time domain techniques on a 24 hour Holter ECG in 28 patients, aged 12(More)
Colour Doppler flow mapping was used to determine the time of closure of the arterial duct in 51 healthy newborn infants. Initial time of closure corresponded with previous reports: 20% on the first day, 82% by the second day, 96% by the third day, and 100% by the fourth day. Twenty infants were delivered by caesarean section and followed up for seven days(More)
A study of more than 1,780 neonates, infants, and children was carried out, using a digital electrocardiograph with a sampling rate of 500 per second, to revise the normal limits of the pediatric ECG. The 12-lead ECG was used with V4R replacing V3. All leads were recorded simultaneously off-line in digital form on magnetic tape and were subsequently(More)
AIM To assess initial experience of cardiac catheterisation in children by the transhepatic approach where conventional venous access is impossible. PATIENTS AND METHODS Percutaneous transhepatic cardiac catheterisation was performed on six occasions in five children (three male) aged 4 to 36 months (mean 17 months). All children had documented femoral(More)
Australia and New Zealand are currently reviewing the regulations governing nutrition function, health and related claims on foods. Health claims currently are not permitted on food labels, with one exception. The aim of this study was to describe the use of such claims on packaged food for sale in Australia (excluding nutrient content claims) prior to any(More)
The conventional 12-lead electrocardiogram (ECG) is the completely dominating recording technique in electrocardiography despite the superiority of the Frank vectorcardiogram (VCG) in certain situations. In adult cardiology, methods for synthesizing the VCG from the 12-lead ECG have been introduced to improve the interpretation of the 12-lead ECG by(More)
Several areas of concern arise in the management of the adult patient who has had a surgical repair of an aortic coarctation. The aim is this article is to review these areas and make suggestions regarding current clinical practice. Coarctation of the aorta accounts for 6·8% of congenital heart disease, with an incidence of one in 12 000 live births.(More)
Four infants and children with anomalous connection of the left coronary artery to the pulmonary trunk were studied with colour Doppler flow mapping. In three the diagnosis was only suspected when the colour Doppler study showed dilated intraseptal and epicardial vessels and an abnormal flow signal into the pulmonary artery in diastole; this latter signal(More)