The White River model of colocated collaborative care: A platform for mental and behavioral health care in the medical home.

In the past two decades a great deal of research has demonstrated improved quality of care when mental health care is integrated into primary care. To date, most of the literature has addressed care management for specific mental illnesses. Such programs can be difficult to implement and sustain. We describe a program of "Colocated Collaborative Care," implemented in 2004 that has been sustained and grown over the 6 years since inception. The Primary Mental Health Care clinic at the White River Junction (Vermont) Veterans Affairs Medical Center offers a full spectrum of mental health care that allows 75% of referred patients to receive all of their care within the primary care clinic, thus conserving scarce specialty services for the most complex patients. The clinic is staffed by a therapist and a psychiatrist (or advanced practice nurse) and complemented by care management and health psychology. It makes use of technology to streamline assessment and track outcomes. The clinic provides a mix of care management, specialty expertise and chronic disease management. Originally developed in a capitated health care system, adherence to general principles that guided its development may be useful in any system of care.

Hippocampal volume and declarative memory function in combat-related PTSD.

The proposition that declarative memory deficits are systematically related to smaller hippocampal volume was tested in a relatively large sample (n = 95) of U.S. military veterans with and without combat-related posttraumatic stress disorder. This correlative analysis was extended by including multiple measures of verbal and visual declarative memory and multiple memory-relevant regional brain volumes that had been shown to exhibit main effects of PTSD in prior work. Small-to-moderate effects were observed on verbal declarative memory in line with a recent meta-analysis; nevertheless, little or no evidence of systematic linear covariation between memory measures and brain volumes was observed.

Psychometric properties of PTSD Checklist in sample of male veterans.

The psychometric properties of the PTSD Checklist (PCL) were investigated in a sample of treatment-seeking and community-dwelling male veterans. In conjunction with previous reports, results from the present study indicate that the PCL possesses strong, robust psychometric properties. The current investigation suggests a cutoff score of 60-higher than previous investigations-related to posttraumatic stress disorder (PTSD) diagnosis derived from the Clinician-Administered PTSD Scale. This research supports the use of the PCL as a brief self-report measure of PTSD symptomatology.

Brain, skull, and cerebrospinal fluid volumes in adult posttraumatic stress disorder.

Children and adolescents with maltreatment-related posttraumatic stress disorder (PTSD) exhibit smaller intracranial tissue volume than controls. Linear relationships have also been observed between intracranial tissue volume and the age of maltreatment onset. The authors explored associations among adult PTSD, early trauma, and cerebral volumes in 99 combat veterans. A bone-based estimate of cranial volume was developed to adjust for variation in body size. Posttraumatic stress disorder was not associated with smaller cerebral tissue volume, but rather with smaller cerebrospinal fluid (CSF) and cranial volumes. These findings co-occurred with expected effects of alcoholism and aging on cerebral tissue and CSF volumes. The results point to early developmental divergences between groups with and without PTSD following adult trauma.

Hippocampal volume, PTSD, and alcoholism in combat veterans.

Studies imposing rigorous control over lifetime alcohol intake have usually not found smaller hippocampal volumes in persons with posttraumatic stress disorder. Because the majority of negative studies have used adolescent samples, it has been suggested that chronicity is a necessary condition for such findings. To test the hypothesis that a smaller hippocampus in PTSD is unrelated to comorbid alcoholism or to chronicity, this study estimated hippocampal volume in a relatively large group (N=99) of combat veterans in which PTSD, lifetime alcohol abuse/dependence, and Vietnam versus Gulf War service were crossed. In subjects with histories of alcoholism, unadjusted hippocampal volume was 9% smaller in persons with PTSD than in those without PTSD. In nonalcoholic subjects, the PTSD-related difference in hippocampal volume was 3%. The failure to observe a strong association between PTSD and hippocampal volume in nonalcoholic subjects was not ascribable to younger age, reduced PTSD chronicity, or lower PTSD symptom severity. The possibility that smaller hippocampal volume is limited to groups in which PTSD is compounded by comorbid alcoholism is not necessarily incompatible with results suggesting a smaller hippocampus is predispositional to PTSD. Further examination of the role of alcoholism and other comorbid conditions in studies of brain structure and function in PTSD appears warranted.

Predictors of veterans' participation in cognitive-behavioral group treatment for PTSD.

Increasingly effective treatments for posttraumatic stress disorder (PTSD) have led to dramatic improvements in the lives of many trauma survivors; however, a significant subgroup of individuals with PTSD avoids mental health treatment. Little is known about the features distinguishing those who participate in treatment from those who do not. We analyzed archival clinical data from 197 male veterans who were evaluated in a Veterans Affairs Medical Center PTSD clinic. We found greater PTSD severity associated with initial enrollment and continued participation in a PTSD group treatment program, and we noted few differences on other background and symptom measures. These preliminary findings suggest possible directions for future research in this area, which may have implications for enhancing service delivery to individuals with PTSD.

Consistency of retrospective reporting about exposure to traumatic events.

Lifetime exposure to traumatic events was assessed by means of a multimethod protocol applied to 76 male military veterans. Consistency of retrospective reporting was determined for physical and sexual assault and abuse, accidents, disasters, combat and warzone experiences, serious illness or injury, and hazardous duty. Findings demonstrate that respondents are generally consistent in reporting traumatic events, although the majority report more events upon reevaluation. Reporting about traumatic events shows some variation as a function of the life epoch in which events occurred, whether they were directly or indirectly experienced, and the type of trauma involved. Discussion addresses memory-related processes triggered by trauma evaluation or tied to characteristics of events themselves as potential sources of inconsistency.