We report age-specific glycohemoglobin values for nondiabetic infants, children, and young adults. These values were determined with an ion-exchange "mini-column" in a specially designed and constructed water bath that maintains column temperature at 23 +/- 0.1 degrees C. Two in-house-prepared controls with glycohemoglobin content amounting to 6.36% and 11.87% of total hemoglobin, stored at -20 degrees C, were used to assess long-term analytical precision. Between-day precision (CV) was 1.4% and 1.65%, respectively. We found a significant correlation (r = 0.981, p less than 0.01) between the glycohemoglobin value and the physicians' independent assessment of clinical control in 129 insulin-dependent diabetics, ages 3-23 years. There were significant differences (p less than 0.05) between glycohemoglobin values between patients with well-controlled or poorly controlled diabetes and those with intermediate control. Reported studies of 20 patients over three to 12 weeks showed that changes in clinical control were paralleled by changes in glycohemoglobin values.

Adolescent↗

PubMed1981

Bandage sign.

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Aged↗

PubMed1969

Pelvic dystocia secondary to urethral diverticulum and urinary retention.

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Adult↗

PubMedDate not supplied

Catheter embolism.

With the increasing utilization of intravenous catheters, complications from their use may be anticipated. We report the case of one such complication, a venous catheter fragment embolization. A review of the literature addressing catheter embolization is provided. Specific recommendations are offered to the emergency physician in an effort to minimize such untoward occurrences.

Aged↗

PubMedDate not supplied

Chemical, physical, and toxicological characterization of fumes produced by heating tetrafluoroethene homopolymer and its copolymers with hexafluoropropene and perfluoro(propyl vinyl ether).

Submicrometer solid-particle (fume) aerosols with up to about 10(8) particles/cm3 are formed when dilute vapors of low molecular weight (MW) (ca. 5000-10,000) perfluoro polymers condense in air. The aerosol (e.g., 0.2 mg/m3) formed from these vapors is highly toxic to laboratory rats by inhalation (30-min exposure) when fresh but loses toxicity in minutes, apparently owing to coagulation. These fumes may result from (a) pyrolysis of tetrafluoroethene homopolymer or tetrafluoroethene-hexafluoropropene copolymer or (b) evaporation, at 200-320 degrees C, of isolated low MW polymer or low MW polymer present in perfluoro polymer resins. Some perfluoro polymer fume aerosols contain reactive functional groups, but others without detectable reactive groups are at least as toxic.

Animals↗