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R Rosenblum

Publications and source records attributed to R Rosenblum.

At least 19 recordsLinked to original sources
PubMed1991

Standardization of a multi-wavelength UV detector for liquid chromatography-based toxicological analysis.

The performance of a multi-wavelength UV detector for automated drug identification following liquid chromatographic separation was evaluated. The ability of selected wavelength ratios to distinguish two closely related drugs was considered at different concentrations. Calibration of the detector based on wavelength ratios was then utilized to standardize two different detectors and to evaluate instrument-to-instrument variation of a series of detectors. Reproducibility of the second-derivative zero intercept for these drug spectra was also evaluated. Standardization of detector performance by reference to these two parameters permitted the transfer of UV spectral libraries stored on one instrument to another without compromising the reliability of qualitative data.

Amphetamines↗
PubMed1980

Non-operative management of severe renal lacerations.

The management of severe renal lacerations produced by blunt trauma requires accurate diagnosis and close followup. All severe renal lacerations cannot be treated expectantly and non-operatively. However, in the stable patient with an accurately defined lesion and no other injury requiring surgical intervention a non-operative approach appears to be acceptable. We present 4 illustrative cases.

Child↗
PubMed1976

Urological care of patients with acute spinal cord injury using tidal drainage.

The function of urological care of patients with spinal cord injuries is is 3-fold: 1) prevention of complications until the bladder has recovered, 2) surgical and medical intervention when recovery is not spontaneous and 3) diagnosis and treatment of complications and/or sequelae. Tidal drainage in these patients is easy, convenient, economical, and readily available and adaptable for use at any institution.

Bethanechol Compounds↗
PubMed1975

Regional myocardial function in idiopathic hypertrophic subaortic stenosis. An echocardiographic study.

To assess regional contractility in idiopathic hypertrophic subaortic stenosis (IHSS), a primary myopathic disorder with documented hyperdynamic ventricular contractions, systolic wall thickening and velocity of contraction of the septum and left ventricular posterior wall were measured in echocardiograms from 16 patients with IHSS and 16 normal subjects. The average thickening of the normal septum and posterior wall was 75.9+/-8.8% and 84.8+/-6.3%, respectively. The posterior wall in IHSS thickened by 75.1+/-6.8%. None of these values differed significantly. However, the increase in thickness of the IHSS septum averaged 22.5+/-2.4%, significantly less than that of either the IHSS posterior wall or the normal septum. Velocity measurements confirmed the impression of diminished septal function. The mean velocity of normal septal contraction averaged 37.0+/-2.3 mm/sec, normal posterior wall 42.3+/-2.0 mm/sec and IHSS posterior wall 55.7+/-3.5 mm/sec, whereas the septum in IHSS contracted at the rate of 26.0+/-2.5 mm/sec. Thus, the IHSS septum contracted significantly more slowly than the normal septum or IHSS posterior wall. However, the posterior wall velocity in IHSS was significantly more rapid than that measured in normal ventricles--perhaps to compensate for the septum. Normalization of all velocities for left ventricular end-diastolic internal diameter did not alter the sifnificance of the results. Consideration of IHSS as an asymmetric myopathy based on prior observations of predominantly septal hypertrophy and distorted septal cellular architecture is now supported by the above evidence of functional left ventricular asymmetry. Although the total left ventricular function in IHSS may be hyperdynamic, regional function is not uniform. The septum appears to be hypodynamic, while the contractile capacity of the posterior wall is increased.

Adolescent↗