Biomedical subjects

Fred A Mann

Publications and source records attributed to Fred A Mann.

5 recordsLinked to original sources

PubMed2005

Chest radiographic evolution in fat embolism syndrome.

OBJECTIVE: To characterize the temporal chest radiographic findings of fat embolism syndrome. MATERIAL AND METHOD: Twenty-nine patients with clinically diagnosed fat embolism syndrome between 1988-1999 were retrospectively identified from the Trauma Registry of Haborview Medical Center, University of Washington. In twenty-two patients, complete medical records and serial chest radiographs were available. All images were reviewed by a dedicated thoracic radiologist. RESULTS: Two of 22 patients had normal radiographs throughout hospitalization, while 20/22 developed abnormal chest radiographs. The radiographic findings were consistent with non-specific diffuse pulmonary edema in all abnormal cases. The time to appearance of evident radiographic lung injury was < 24 hours of initial trauma in 10/20 (50%), between 24-48 hours in 4/20 (20%), between 48-72 hours in 5/20 (25%), and 1 patient (1/20, 5%) developed an abnormal chest radiograph after 72 hours. Ten of 20 patients (50%) with abnormal radiographs had complete resolution of the edema pattern within 1 week of development of opacities, 3/20 (15%) cases showed complete radiographic resolution between 1-2 weeks, 2/20 (10%) cases showed complete radiographic resolution between 2-3 weeks, 1/20 (5%) showed complete radiographic resolution between 3-4 weeks, and 4/20 (20%) died without resolution of the radiographic finding. CONCLUSION: The chest radiographic appearance of fat embolism syndrome is non-specific. Normal radiographs can also be seen. Most patients presenting with a normal initial radiograph develop radiographic evident abnormalities within 72 hours of injury and most cases showed radiographic resolution within 2 weeks of hospitalization. Although chest imaging play a little role in the clinical management of fat embolism syndrome, understanding of temporal presentation and evolution of the otherwise non-specific pulmonary opacities may help to avoid unnecessary evaluation in selected patients.

Adult↗

PubMed2004

The misdiagnosis of acute cervical spine injuries and fractures in infants and children: the 12-year experience of a level I pediatric and adult trauma center.

OBJECTIVE: The objective was to determine the frequency of acute cervical spine injuries and fractures that were misdiagnosed in infants and children (< or =14 years) initially evaluated at a pediatric and adult urban level I trauma center. METHODS AND RESULTS: This was a retrospective, single-institution, case series of pediatric cervical spine injuries and fractures that were misdiagnosed during initial emergency room imaging evaluation. "Misdiagnosed" cases were those cases whose imaging studies initially obtained in the emergency room were misinterpreted based on reevaluation by a senior trauma radiologist blinded to the initial results. Nineteen percent (7 out of 37) were misdiagnosed on initial emergency room imaging evaluation. Five percent were true "missed" fractures, and 14% were "normal and/or developmental variants" read as fractures or dislocation. CONCLUSIONS: The error rate for infants and children < or =8 years was 24%, and for children > or =9 years was 15%. The occiput to C2 region was the most common site of diagnostic error. The most common factors predisposing to misdiagnosis were unfamiliarity with pediatric cervical spine anatomy, failure to recognize normal variants seen during growth and development, and suboptimal conventional film techniques.

Adolescent↗

PubMed2004

Use of helical computed tomography for imaging the pediatric cervical spine.

OBJECTIVE: To determine the differences in resource utilization and radiation exposure between conventional radiography (ConvRad) and helical computed tomography (HCT) when used to survey the pediatric cervical spine (CSp). METHODS: Patients aged 0-14 years who required CSp radiographic evaluation in addition to cranial CT were prospectively enrolled and assigned to undergo either HCT or ConvRad with adjunctive linear tomography. Outcomes of medication usage, emergency department (ED) length of stay (LOS), cervical spine radiation exposure, and imaging resource use (relative value unit [RVU]) were compared between the two groups. Data were analyzed by regression analysis with adjustment for confounders. RESULTS: Of 136 patients, 64 and 72 patients were assigned to the ConvRad group and HCT group, respectively. At the discretion of the trauma team, 34% of the patients enrolled crossed between the two study arms. Odds ratio (OR), based on original assignment, was 0.8 (95% CI = 0.4 to 1.8) for difference in medication usage between the two groups. Mean LOSs were 259 minutes (95% CI = 124 to 394) and 183 (95% CI = 166 to 200) minutes for HCT and ConvRad, respectively. CSp imaging RVUs were 5.5 (95% CI = 5.1 to 5.8) for HCT and 4.0 (95% CI = 3.3 to 4.6) for ConvRad. Mean CSp radiation doses were 389 mRem (95% CI = 346 to 432) for HCT and 294 mRem (95% CI = 245 to 343) for ConvRad. Adjustment for confounders did not change the direction of the results. CONCLUSIONS: As a modality to screen the pediatric CSp for blunt-force trauma, HCT results in increased radiation exposure and radiology resource use without a reduction in sedation usage or time in the ED.

Adolescent↗

PubMed2002

Soft tissue application of lasers.

Despite increasing numbers of veterinarians incorporating lasers into their clinical practices, little information has been published about laser clinical applications in soft tissue surgery. This article reviews soft tissue interaction, describes laser equipment and accessories commonly marketed to veterinarians, and discusses clinical applications of the carbon dioxide laser in a systems-based approach. A table of recommended laser tips and settings based on the authors' experiences using a carbon dioxide laser (AccuVet Novapulse LX-20SP, Bothell, WA) is provided.

Animals↗

PubMedDate not supplied

Major glossectomy in dogs: a case series and proposed classification system.

Major resections of the tongue have not been commonly performed in animals because of concerns about the unfavorable postoperative effects of diminished lingual function. Five dogs were retrospectively reviewed to determine prehensile function and quality of life after glossectomies. Examinations were performed 1 week to 8 years after glossectomy, and owner interviews were conducted 10 months to 8 years after the surgery. All five dogs had acceptable and functional outcomes. Based on these five cases, glossectomy was well tolerated by dogs and may be a viable treatment option for aggressive tongue tumors and other conditions that render the tongue unsalvageable.

Animals↗