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Biomedical subjects

S Rubin

Publications and source records attributed to S Rubin.

174 records · Page 10Linked to original sources

Chest radiographic appearances in severely burned adults. A comparison of early radiographic and extravascular lung thermal volume changes.

Chest radiographs (CXRs) have previously been used as a diagnostic tool to detect changes in lung water. In this study CXR changes in severely burned adults, in the absence of an inhalation injury, preceded detectable increases in extravascular lung thermal volume (ELTV) by 3 to 5 days. The hypothesis that early CXR density changes in burned patients have an infectious cause, not related to changes in ELTV, was tested. Blood cultures, CXRs, and ELTV were evaluated during the first 15 days after injury in severely burned adults who had no identified inhalation injury. Chest radiographs were scored daily on a 1 to 5 scale, with 1 = normal, 2 = peribronchial cuffing, 3 = mild interstitial infiltrates, 4 = severe interstitial infiltrates, and 5 = alveolar infiltrates. In all patients, except those who were septic, increases in their CXR density scores correlated well with increases in ELTV. The ELTV/CXR score ratios for septic burn patients on days 1 to 6 postburn was 1.7 +/- 0.2 compared with 4.2 +/- 0.4, (means +/- SEM) for nonseptic (P < .001), whereas the ELTV/CXR score ratios for septic and nonseptic patients, 7 to 15 days postburn, were 3.8 +/- 0.4 and 3.4 +/- 0.5, respectively. We suggest that before any measurable change in ELTV early increases in CXR density scores in burned patients without a concomitant inhalation injury are caused by intraalveolar pneumonitis or hyaline membrane atelectasis and not increased ELTV.

Aged↗

Intraperitoneal therapy in the management of ovarian carcinoma.

The intraperitoneal administration of chemotherapeutic and biological agents as therapy of ovarian carcinoma is based on both theoretical considerations and experimental evaluations which suggest that tumor present in the cavity can be exposed to higher concentrations of certain antineoplastic drugs than can be accomplished if the agents are administered systemically. Recent clinical data have confirmed both the safety and pharmacokinetic advantage associated with this approach. Surgically defined responses have been observed in patients with small-volume residual refractory ovarian carcinoma treated with several single-agent and combination intraperitoneal therapeutic programs. While significant activity has been noted in this clinical setting, a clearly defined role for intraperitoneal treatment in the standard management of ovarian carcinoma remains to be determined.

Antineoplastic Agents↗

Serological evidence of Ureaplasma urealyticum infection in neonatal respiratory disease.

Since up to 80 percent of pregnant women and 30 percent of neonates may be colonized with genital mycoplasmas, it is difficult to determine whether true infection occurs. The antibody responses to eight serotypes of U. urealyticum were assessed in mothers and infants in 21 cases of neonatal respiratory disease (RD) and 24 normal cases. Among the normal population of mothers and infants, a titer of greater than or equal to 1:32 occurred in 0.25 percent (1/394). In mother-infant paired titers, a fourfold difference occurred in 2.6 percent (5/192). Among 54 RD neonates, 55.6 percent had a titer of greater than or equal to 1:32 compared to only 4.2 percent of normal neonates (p less than .001). Fourfold elevations in antibody titers of greater than 1:32 were observed in the neonate in 52.4 percent of RD cases compared to 0 percent of 24 normal pairs (p less than .001) and in 28.6 percent of mothers of RD neonates compared to 0 percent in normal cases (p = .013). We observed that 43.3 percent of RD neonates with titers greater than or equal to 1:32 died compared to 16.6 percent of RD neonates exhibiting no elevation of antibody response over the maternal level. Among the six who died, 66.7 percent of neonates and 16.7 percent of their mothers had elevated titers, compared to 33.3 percent of 15 surviving infants and 40.0 percent of their mothers. These elevated antibody responses strongly support the concept that U. urealyticum causes infection in the perinatal period in association with neonatal respiratory disease. Since the elevation in titers was detected close to delivery in many cases, the infection may occur in utero.

Adult↗