Calorimetric analysis depends on the direct proportionality between the heat changes that occur during chemical reactions and the amount of reacting substances. Potential uses of calorimetry in the clinical laboratory are discussed, with examples. The calorimetric technique does not require optically clear specimens, and if the specificity of the measured reaction is assured, calorimetry can be...

The literature has described the clinical aspects of the laminate veneer restoration; however, the laboratory preparation of these veneers has not been detailed This paper outlines a step-by-step laboratory technique for the construction of a commercially available laminate veneer, Mastique.® J_Jaminate veneers have been successfully used on patients with hypoplasia, tetracycline staining, fluo...

Laboratory testing is a highly complex process and, although laboratory services are relatively safe, they are not as safe as they could or should be. Clinical laboratories have long focused their attention on quality control methods and quality assessment programs dealing with analytical aspects of testing. However, a growing body of evidence accumulated in recent decades demonstrates that qua...

1. Two cases of "Landry's syndrome" are reported, the term being used to indicate an ascending paralysis of the spinal cord. 2. One case is due to compression by a chloroma, and the mechanism of ascent of the paralysis is discussed. The second case is due to a presumed infective agent. 3. The varied causes of the syndrome are emphasised, as well as the necessity to exclude compression as a caus...

Background Contrast enhanced MRA is a well validated and widely used technique for noninvasive vascular imaging. Significant advances in coil development, parallel imaging, and view-sharing techniques can enable imaging with very high spatial and/or temporal resolution which can be tailored to very specific or problematic clinical situations. Cartesian acquisition with projection like reconstru...

A centrifugal analyzer method was developed for measuring the MB isoenzyme of creatine kinase (EC 2.7.3.2) in serum by use of a specific immunochemical technique that avoids interference from CK-BB and adenylate kinase. Enzymatic activity was measured kinetically at 30 degrees C with an optimized reagent containing creatine phosphate as substrate. The precision (CV) of the assay was 5 to 12 per...

We describe a new technique for monitoring intra-cuvette temperatures in temperature-controlled spectrophotometric cells by use of two solutions, one for which absorbance is highly sensitive to temperature and one for which absorbance is insensitive to temperature. The first solution, cresol red in tris(hydroxymethyl)aminomethane buffer, is used to construct an absorbance-vs.-temperature calibr...

The sympathetic skin response can be measured across the hands and feet with a simple bio amplifier. Controlled by the sympathetic nervous system, this response results from the activation of the eccrine sweat glands by many types of stimuli. This classical clinical test is used to evaluate peripheral neuropathies caused by a wide range of diseases, and can easily be adapted to teach a range of...