Diagnostic accuracy of maxillofacial trauma two-dimensional and three-dimensional computed tomographic scans: comparison of oral surgeons, head and neck surgeons, plastic surgeons, and neuroradiologists.

BACKGROUND: The authors' objectives were to study differences in diagnostic accuracy between two- and three-dimensional computed tomographic scans and among the specialties of plastic surgery, head and neck surgery, oral surgery, and neuroradiology, since this had not previously been done. METHODS: Four groups of subspecialists completed time-proctored tests of 20 maxillofacial trauma scans with zygomatic arch, zygomatic complex, orbital, Le Fort I, II, III, mandibular and panfacial fractures from five institutions (n = 40). Accuracy of diagnosis and indication for surgery, efficiency, and preference were assessed. Comparison between two- and three-dimensional scans, between expert (experienced attending) versus novice (resident/fellow), and among the four subspecialties was performed. RESULTS: For two- and three-dimensional scans, two-dimensional was more accurate for orbital floor/medial wall (40 percent and 34 percent) and frontal sinus (26 percent for diagnostic) fractures. Two-dimensional examinations took 2.3 times longer but were preferred (85 percent). Experts and novices had similar accuracy with three-dimensional scanning, but experts were more accurate with the two-dimensional scanning. Experts were 3.3 times faster with two-dimensional scanning but not with three-dimensional scanning. Accuracy of diagnosis among subspecialists was similar, except that oral surgery was less accurate with orbitozygomatic fractures (79 percent versus 90 to 92 percent); neuroradiology was less accurate with indications for surgery (65 percent versus 87 to 93 percent). CONCLUSIONS: Differences in diagnostic accuracy exist between two- and three-dimensional maxillofacial scans and between expert and novice readers but not between subspecialties. Combined modalities are preferred.

Incidence of cleft pathology in Greater New Orleans before and after Hurricane Katrina.

BACKGROUND: Reports after the 2005 Hurricane Katrina have documented an increase in stress reactions and environmental teratogens (arsenic, mold, alcohol). OBJECTIVE: To assess the incidence of cleft pathology before and after the hurricane, and the distribution of cleft cases by gender and race. METHODS: Retrospective chart review of cleft lip with or without cleft palate (CL/P) and cleft palate (CP) cases registered with the Cleft and Craniofacial Team at Children's Hospital of New Orleans, the surgical center that treated cleft cases in Greater New Orleans between 2004 and 2007. Live birth data were obtained from the Louisiana State Center for Health Statistics. RESULTS: The incidence of cleft cases, beginning 9 months after the hurricane (i.e., June 1, 2006) was significantly higher compared with the period before the hurricane (0.80 versus 1.42; p = .008). Within racial group comparisons showed a higher incidence among African Americans versus whites (0.42 versus 1.22; p = .01). The distribution of CL/P and CP cases by gender was significant (p = .05). CONCLUSION: The increase in the incidence of cleft cases after the hurricane may be attributable to increased stress and teratogenic factors associated with the hurricane. The increase among African Americans may have been due to comparatively higher exposure to environmental risk factors. These findings warrant further investigation to replicate the results elsewhere in the Gulf to determine whether there is a causal relationship between environmental risk factors and increased cleft pathology.

PTSD and dopaminergic genes, DRD2 and DAT, in multigenerational families exposed to the Spitak earthquake.

The objective of this study was to assess the generality of the association of DRD2 and DAT genes and Post-Traumatic Stress Disorder (PTSD) diagnosis/symptom severity. Two hundred ethnic Armenians from 12 multigenerational families exposed to the catastrophic 1988 Spitak earthquake were studied. Common polymorphisms A1/A2 alleles of the DRD2 and '9' repeat allele of DAT gene were genotyped. Heritability, association and linkage were assessed using variance component genetic analyses. After adjusting for the covariates, the heritabilities of PTSD diagnosis and B and C category symptoms were: 0.37, 0.75 and 0.39 respectively. Category D symptoms were not heritable. Neither the DRD2 nor the DAT polymorphisms explained the variation seen in PTSD diagnosis, total PTSD symptom severity, and categories B and C symptom severities. These findings contradict prior reports of positive associations between both DRD2 and DAT, and PTSD.

Depression and PTSD symptoms among bereaved adolescents 6(1/2) years after the 1988 Spitak earthquake.

OBJECTIVE: To compare depression and PTSD symptoms of parentally bereaved adolescents and a comparison group after a catastrophic natural disaster. METHOD: Six and a half years after the Spitak earthquake, 48 parentally bereaved adolescents and a comparison group of 44 subjects with no parental loss were evaluated using the Depression Self - Rating Scale (DSRS) and Child Posttraumatic Stress Disorder Reaction Index (CPTSD-RI). RESULTS: Orphans scored significantly higher on depression than those who lost a father (Mean DSRS scores: 20.2+/-3.3 vs. 16.6+/-5.2; p<0.001), who in turn scored significantly higher than those who lost a mother (Mean DSRS scores: 16.6+/-5.2 vs. 12.7+/-4.1; p<0.002). Depression scores for orphans fell above the cut-off for clinical depression, while those who lost a father scored slightly below. PTSD scores within each group fell in the moderate range of severity, with girls scoring higher than boys (Mean CPTSD-RI scores: 35.9+/-11.3 vs. 29.3+/-10.1; p<0.04). LIMITATION: As self-report instruments were used, responses may have been over- or under- reported. Participants belonged to the same ethnic group and therefore the results may not be generalizable to other populations. CONCLUSION: Loss of both parents and, to a lesser degree, loss of a father is a significant risk factor for depression, but not for PTSD. This study extends prior findings documenting post-disaster chronicity of depression and PTSD among bereaved adolescents, and underscores the need for post-disaster mental health and social programs, especially for those who suffer the loss of both parents.

Heritabilities of symptoms of posttraumatic stress disorder, anxiety, and depression in earthquake exposed Armenian families.

OBJECTIVE: To examine the heritabilities of symptoms of posttraumatic stress disorder (PTSD), anxiety, depression, and the shared genetic component of these symptoms among family members exposed to the 1988 Spitak earthquake in Armenia. METHODS: Two hundred members of 12 multigenerational families exposed to the Spitak earthquake were studied using a battery that assessed earthquake exposure and symptoms of PTSD, anxiety, and depression. Heritabilities of these phenotypes were determined using variance component analyses and shared genetic vulnerabilities between these phenotypes were determined using bivariate analyses. RESULTS: Heritabilities were as follows: PTSD symptoms 41% (P<0.001), anxiety symptoms 61% (P<0.001), and depressive symptoms 66% (P<0.001). The genetic correlation (rhog>0) of PTSD symptoms with anxiety symptoms was 0.75 (P<0.001) and with depressive symptoms it was 0.71 (P<0.001). The genetic correlation of anxiety with depressive symptoms was 0.54 (P<0.001). CONCLUSION: The heritabilities found in this multigenerational family study indicate that the genetic make-up of some individuals renders them substantially more vulnerable than others to develop symptoms of PTSD, anxiety, and depression. A large proportion of the genetic liability for PTSD, anxiety, and depression are shared. The findings offer promise for identifying susceptibility genes for these phenotypes.