Andrea O. Ray

Learn More
Giant omphaloceles present a reconstructive challenge in planning, management, and eventual closure of the abdominal wall defect. The goal of reconstruction is to recreate a functional abdominal wall domain and return the extra-anatomically placed viscera into the peritoneal cavity in a safe manner. Traditionally, placement of tissue expanders has been in(More)
INTRODUCTION First described by Von Recklinghausen in 1891, fibrous dysplasia is a developmental defect of osseous tissue such that bone is produced with an abnormally thin cortex and marrow is replaced with fibrous tissue that demonstrates characteristic ground-glass appearance on x-ray examination. The underlying defect in fibrous dysplasia is a mutation(More)
We hypothesized that agents very different from surfactant may still support lung function. To test this hypothesis, we instilled FC-100, a fluorocarbon, and Tween 20, a detergent, which have higher minimum surface tensions and less hysteresis than surfactant, into 15 full-term and 14 preterm lambs. FC-100 and Tween 20 were as efficient as natural(More)
Massive localised lymphoedema (MLL) is a benign lymphoproliferative soft-tissue overgrowth in the morbidly obese patient. The diagnosis may be challenging, and is a form of secondary lymphoedema, often described as idiopathic scrotal elephantiasis. The lesion presents as a large mass in the morbidly obese, and patients seek treatment late in the disease(More)
To study the postnatal maturation of vagal control of airway muscle tone, we determined the effects of vagotomy and supramaximal vagal stimulation on the resistance of the respiratory system in eight newborn and seven 6-wk-old piglets. Because the lung periphery has distinctive responses to cholinergic agonists and a lower density of vagal fibers and(More)
Nipple areolar complex (NAC) sparing mastectomy improves the cosmetic outcome of patients with breast cancer. However, women with significant breast ptosis are not candidates for this technique due toexcessive skin flap length and ensuing risk of NAC ischemia.1 – 3 We report a novel technique using free nipple graft during skin sparing mastectomy for(More)
To characterize the effect of postnatal development on the viscoelastic behavior of the respiratory system, we quantified the amplitude and time course of stress relaxation in the lungs and chest wall of seven newborn and eight 8-wk-old anesthetized piglets. Stress relaxation was distinguished from other dissipative pressure losses by performing airway(More)
We examined the mechanical behavior of a bronchopleural fistula created by sectioning a small subpleural bronchus in seven anesthetized lambs. The pressure across the fistula was measured as the difference between the pressure recorded by a retrograde bronchial catheter inserted in the vicinity of the fistula and the outflow pressure at the fistula exit.(More)
We previously reported that 4 week old lambs have the least tolerance to reduction in CO. We hypothesized that this was due to their relative anemia, because the low [Hb]: 1) decreased SOT (SOT=COxCaO2) or 2) impaired O2 extraction (extr). To test these hypotheses, we lowered CO in 4 week old lambs by incremental stepwise inflation of a balloon tipped(More)
  • 1