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Biomedical subjects

J W Ward

Publications and source records attributed to J W Ward.

At least 145 records · Page 8Linked to original sources
PubMed1977

Analeptics.

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Animals↗
PubMed1977

Carbamazepine as an anticonvulsant in children.

Forty-five children with major motor or psychomotor seizure disorders were treated with carbamazepine in place of sedative anticonvulsants (phenobarbital, primidone) because of chronic behavioral difficulties. A batter of measures believed to reflect attentional and perceptual abilities was administered initially and repeated 4 to 6 months later following the drug crossover. At the conclusion of the study, 37 of the 45 children were judged to be drug "successes"; that is, general alertness and attentiveness were improved, while seizures were adequately controlled. This study indicates that therapeutic regimens of carbamazepine are less likely to interfere with mental functions in children than are equivalent doses of sedative anticonvulsants.

Adolescent↗
PubMed1975

Quantitative assessment of the electroencephalogram in renal disease.

EEGs wre recorded from renal patients to determine if there are quantifiable characteristic changes in the EEG was quantified by calculating the percentage of spectral power in the bandwidth 3-7 c/sec referrred to a frequency range of 3-13 c/sec and by computing the mean frequency of the dominant rhythm in the EEG. Blood urea nitrogen and creatinine concentrations, as well as a self-assessment of the patient's clinical condition, were recorded. The general finding of this research is that EEG slowing, as evaluated by power spectral techniques, is correlated with uremia-associated variables. 1. In a non-dialyzed patient population with renal failure, slowing in the EEG was found to be directly corelated with increased creatinine concentrations. 2. Quantitative measures of slow wave activity computed using power spectral techniques were found to be highly corelated with an estimate of slowing made by an electroencephalographer. 3. Compared with undialyzed azotemic patients, malignant hypertensive patients with comparable serum creatinine concentrations typically displayed increased slow wave activity, while slowing was generally reduced in the dialyzed patient population. 4. A series of EEGs recorded from one patient during the first three dialyses of her life revealed that slow wave activity decreased during each successive dialysis. In another patient, all quantified EEG values recorded prior to renal transplantation significantly improved after transplantation...

Adolescent↗
PubMed1975

Attempted suicide with a pesticide mixture.

An attemped suicide with a pesticide mixture containing pentachlorophenol, benzene hexachloride, dieldrin, metaldehyde phenoxyacetate esters, paraquat, diquat and petroleum distillates, is reported. The prognosis initially seemed hopeless, but the patient was treated successfully by intensive care with early respiratory assistance.

Adult↗
PubMed1975

Neurotoxicity in uremia.

The dialysis patient is aware that his behavior evokes reciprocal and complicating responses from important people in his environment. These interactions are perceived and conducted by neurochemical mechanisms which may be impaired in the abnormal chemical environment imposed in renal failure. It is the behaviors we comprehend as indicators of disordered nervous mechanisms. Therefore, it is logical that neurophysiological and neurobehavioral phenomena should be measured quantitatively in order 1) to estimate objectively the patients' success in achieving the goal of maintenance dialysis treatment, 2) to assess the comparative adequacy of dialysis regimens and 3) to provide objective endpoint measures which are relevant to uremia for further investigations of the etiology and pathogenesis of these critically significant uremic manifestations. Our experimental results illustrate that: 1) measures of conduction velocity, distal latency and response amplitudes, as employed by us, were relatively insensitive in the patients and circumstances studied; 2) several neurophysiological measures, i.e., the spontaneous EEG, VER latency and, perhaps, photic stimulation, on the other hand, are highly correlated with the severity of renal failure; 3) behavioral measures of sustained attention and alertness (TMT), of short-term memory (ASTM) and of cognitive manipulation of symbols (AR) are also highly correlated with the severity of renal failure; 4) some measured abnormalities improve following dialysis, but not always to normal--three residual impairments may indicate dialysis in adequacy; 5) several of these measures can provide objective evidence for adequacy of dialysis and other clinical and treatment effects in patients with renal failure.

Auditory Cortex↗