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Biomedical subjects

Jonathan Singer

Publications and source records attributed to Jonathan Singer.

6 recordsLinked to original sources
PubMed2005

Artificial nail aspiration masquerading as refractory croup.

Infants with an aspirated foreign body who present with acute onset of obstructed airflow should be readily diagnosed. When aspirated foreign body is overlooked, patients may present with recurrent inspiratory, biphasic, or expiratory stridor. We report an infant who repeatedly presented with varying degrees of inspiratory stridor. The diagnosis of aspirated foreign body was hampered by the presence of respiratory syncytial virus infection with the initial episode.

Cough↗
PubMed2004

Chiral fiber gratings.

Chiral gratings with double helix symmetry were produced by twisting glass optical fiber with a noncircular core cross section as it passed through a miniature oven. We observed polarization-selective transmission in chiral fibers with pitches of tens of micrometers. Two modes of optical interaction were differentiated. In chirallong-period gratings, dips in transmission were observed at wavelengths associated with scattering into distinct cladding modes mediated by the chiral grating. In chiral intermediateperiod gratings, a broad scattering band was observed. These gratings can be used to produce sharp or broad polarization-selective filters.

Journal Article↗
PubMed2003

Management of toxic exposure in children.

Millions of children ingest household products and medications yearly. The continuous proliferation of new products and pharmaceutic agents makes it difficult for physicians to maintain a current command of toxicologic information. Multiple sources, including poison control centers, can provide information; however, EPs must be familiar with several agents that are either significant for their frequency or for their disproportionate potential for morbidity and mortality in pediatric patients. With this select group of intoxicants, physicians must anticipate cardiovascular and pulmonary instability and rapid changes in central nervous system functioning. Appropriate supportive care requires monitoring of the following: vital signs, level of consciousness, airway control, ventilation and circulatory support, body temperature, urine output, and acid base balance. Once these concerns are addressed, prevention of further absorption, enhancing a product's elimination, and treatment with specific antidotes may enhance supportive care. Care is also likely to be enhanced if the EP recognizes the inherent differences (medically and socially) between adults and children of various ages. Definitive emergency care is completed only after the provision of a developmentally oriented preventive strategy.

Adult↗