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Biomedical subjects

C M Mendez

Publications and source records attributed to C M Mendez.

6 recordsLinked to original sources
PubMed1998

The relationships between premilitary school record data and risk for posttraumatic stress disorder among Vietnam war veterans.

The purpose of this study was to determine whether Vietnam veterans' risk for posttraumatic stress disorder (PTSD) was correlated with their premilitary school performance. The authors compared both primary and secondary school record data on hospitalized chemically dependent PTSD patients with those of both non-PTSD, chemically dependent and community controls. All participants were male Vietnam war combat veterans. The comparisons were made with MANCOVA analyses with the effects of combat and age differences between groups controlled. For the most part, primary-school grade point average, absenteeism, and tardiness data on three groups did not differ significantly. However, the mean secondary school grade points of the future PTSD patients were generally substantially lower than those of controls. Additionally, more secondary school absenteeism and tardiness were reported among future PTSD patients than in the controls. The groups did not differ significantly on number of extracurricular activities. Academic weakness, absenteeism, and tardiness in secondary school appear to be moderately strong predictors of vulnerability to PTSD after traumatization. It also supports the claim that chronic PTSD is, in part, the result of weaknesses present before exposure to trauma.

Absenteeism↗
PubMed1997

A comparative outcome study of frequent, moderate, occasional, and nonattenders of Alcoholics Anonymous.

The purpose of this project was to identify the outcomes associated with frequent, moderate, occasional, and nonparticipation in Alcoholics Anonymous by male alcohol dependents during the first month after treatment. Informants reported nonparticipants consumed far more alcohol during a 48 week followup than moderate or occasional participants. Moderate and occasional participants were rated as abstinent more often than nonparticipants. Nonparticipants were also reported jailed more often than participants. All other consumption and quality of life comparisons between the groups were nonsignificant. Occasional and moderate AA attendance appear to be associated with better outcomes than nonattendance, but frequent participation was not associated with additional improvement.

Adult↗
PubMed1997

The efficacies of three relaxation regimens in the treatment of PTSD in Vietnam War veterans.

Ninety male Vietnam veterans with posttraumatic stress disorder (PTSD) were administered relaxation instructions, relaxation instruction with deep breathing exercises, or relaxation instructions with deep breathing training and thermal biofeedback. Improvement appeared on only 4 of the 21 PTSD and physiological dependent variables studied. All 21 Treatment x Time interactions were nonsignificant. This suggests that the treatments were mildly therapeutic, but that the additions of training in deep breathing and thermal biofeedback did not produce improvement beyond that associated with simple instructions to relax in a comfortable chair.

Adult↗
PubMed1991

Spinal distribution and collateral projections of rat spinomesencephalic tract cells.

The distribution of cells belonging to the rat spinomesencephalic tract was studied by means of the retrograde transport of fluorescent dyes. Bilateral midbrain injections of cytoplasmic and nuclear tracers were made in order to evaluate the location of ipsilateral, contralateral, or bilaterally projecting cells. Spinal neurons with ascending projections to midbrain and descending propriospinal projections were identified by midbrain and spinal injections of different cytoplasmic labels. The locations of spinomesencephalic tract cells included seven regions of the spinal gray matter: marginal zone, lateral neck of the dorsal horn, nucleus proprius, the region around the central canal, the lateral cervical and spinal nuclei and the ventral horn. Cells projecting to the ipsilateral or contralateral midbrain had similar distributions and were frequently found in clusters with overlapping dendritic fields. Approximately 75% of spinomesencephalic cells projected to the contralateral midbrain. The largest contribution to the spinomesencephalic tract cell population was found in cervical cord segments 1-4. Cells with bilateral projections accounted for nearly 2% of all labeled cells, whereas 5% had both ascending and descending projections. Spinomesencephalic cells were found to have varying dendritic fields and morphology, e.g. fusiform, pyramidal, round/oval, and multipolar. The results of the present study lend further support to the view that the spinomesencephalic tract is a multi-component pathway with varied origins and projection targets.

Afferent Pathways↗