Barriers to research opportunities among osteopathic medical students.

CONTEXT: Despite the increase of importance placed on research, both by residency program directors and the medical field at large, osteopathic medical students (OMS) have significantly fewer research experiences than United States (U.S.) allopathic medical students and non-U.S. international medical graduates. However, few studies have addressed this long-standing discrepancy, and none directly have focused on osteopathic medical students to assess their unique needs. The literature would benefit from identifying the barriers osteopathic medical students encounter when participating in research and understanding the currently available resources. OBJECTIVES: To assess the barriers that OMS face when seeking research opportunities, identify resources currently available to osteopathic medical students at their respective schools, and investigate factors that contribute to an osteopathic medical student's desire to pursue research opportunities. Additionally, to investigate osteopathic medical students' confidence in research methodology. METHODS: A survey was created by the investigators and administered to participants over a three-month period via a GoogleForm. Research participants were surveyed for demographic information, as well as their involvement in research projects in the past, mentor availability, institutional resources, motivation to participate in research, individual barriers to participation, and confidence in their ability to do independent research. Responses were de-identified and analyzed using Microsoft Excel functions to count data and calculate percentages, as well as Pearson's chi square analysis. RESULTS: After relevant exclusion, 668 responses were included. Of the students surveyed, 85.9% (574) indicated they currently and/or in the past were involved in research. More than half of the respondents that are not currently involved in research are interested in pursuing it (86.9%; 344). The primary barriers students reported facing include lack of time (57.8%; 386), feeling overwhelmed and unsure how to start (53.4%; 357), and lack of access to research (53%; 354). 34.7% (232) of students stated they either did not have resources from their school or were unsure whether these resources were available. The two most cited motivations to pursue research included boosting their residency application and/or interest in the area of study. Male gender and current research were associated with reported confidence in research ( [4, n=662]=10.6, p<0.05). CONCLUSIONS: Findings from this study provide a synopsis of the barriers to research opportunities among osteopathic medical students. Notably, ⅓ of OMSs reported an absence or unawareness of available research resources at their osteopathic medical schools.

Evaluation of spin in the abstracts of systematic reviews and meta-analyses focused on the treatment of obesity.

OBJECTIVE: Spin, i.e., the misrepresentation of research findings, has the potential to affect patient care. Evidence suggests that spin is prevalent in obesity randomized controlled trials. Therefore, the primary objective of this study was to evaluate spin in abstracts of systematic reviews covering obesity treatments. METHODS: MEDLINE and Embase were searched to retrieve systematic reviews on obesity treatments. Each systematic review abstract was inspected for the nine most severe types of spin, i.e., the misrepresentation of study findings by exaggeration or omission, regardless of intentionality. Screening and data extraction occurred in a masked, triplicate fashion. Methodological quality was determined using A MeaSurement Tool to Assess systematic Reviews (AMSTAR-2). RESULTS: Spin was identified in 20 (out of 200, 10%) abstracts, with spin type 5 (claiming efficacy despite high risk of bias among primary studies) being most common (11/200, 5.5%). Spin types 2 and 7, both related to unsupported efficacy claims, were not found. No associations were found between spin and extracted study characteristics. The methodological quality of the sample was rated as follows: critically low (23.0%), low (13.5%), moderate (60.5%), and high (3%). CONCLUSIONS: Although these findings demonstrate a low proportion of spin in the abstracts of systematic reviews for obesity treatment; increased preventive measures may further reduce its presence.

[Rudolf Frey - a biographical sketch on the occasion of his 100th birthday]. / Rudolf Frey ­ eine biografische Skizze aus Anlass seines 100. Geburtstags.

The life of an outstanding human being, a creative personality, will find the interest of posterity if he is acknowledged not only as a representative of his time but also decades later can be described as a formative character. This applies to Rudolf Frey who, like no other, has deeply influenced the development of German language anesthesiology after the Second World War. In the 1950s and 1960s as a visionary he already portrayed the four pillars of our discipline as the future field of work of anesthetists: anesthesiology, intensive care, emergency medicine and pain therapy. The authors take the anniversary of his 100th birthday as an occasion to recall Rudolf Frey's extraordinary biography.

[Subdural hematoma after dural puncture: fateful complication of epidural anesthesia]. / Subdurales Hämatom nach Duraperforation: Schicksalhafte Komplikation der Periduralanästhesie.

Subdural hematoma may occur as rare, although intervention- specific complications of accidental dural puncture by neuroaxial block. Bleeding may be caused by rapid cerebrospinal fluid loss related to traction on fragile intracranial bridging veins. This article reports a case of postdural puncture headache in a 43-year-old woman after accidental dural puncture during attempted placement of an epidural catheter for induction of abortion. Bed rest, analgesics, theophylline and hydration were to no avail and only a blood patch improved the headaches. The patient presented 7 weeks later with headache and left-sided hemiplegia. Magnetic resonance imaging showed a right frontoparietal subdural intracranial hematoma which had to be surgically evacuated. The patient recovered completely. Intracranial hematoma is a rare but serious complication of central neuroaxial block. According to current German jurisdiction this risk must be addressed when informed consent is obtained. Intracranial hematoma should be considered in the differential diagnosis of atypical headache and neurological signs (e.g. focal motor and sensory deficits and seizures) following neuroaxial block and adequate image diagnostics should be carried out without delay.

[Postpartum eclampsia and fulminant HELLP syndrome]. / Postpartale Eklampsie und fulminantes HELLP-Syndrom.

Postpartum onset of eclampsia and HELLP (hemolysis, elevated liver enzymes, low platelet count) syndrome is a rare but life-threatening complication for both mother and fetus. A case of a 38-year-old parturient (gravida 2, para 1) who was asymptomatic prior to delivery is reported. Emergency caesarean section had to be performed due to sudden onset of fetal bradycardia as a result of partial placental separation. The perioperative course was characterized by new onset hypertension, nausea and restlessness; within 2 h the patient suffered a generalized seizure which was treated with magnesium sulfate and hydralazine. Despite management in accordance with current guidelines, the condition deteriorated with hypotension, anemia and renal failure. On further examination hematomas in the abdominal cavity and walls were identified and laboratory tests confirmed HELLP syndrome with severe coagulopathy. Explorative laparotomy revealed diffuse bleeding without a significant isolated source or postpartum uterine hemorrhage. Retrospectively, the anemia could be ascribed to severe hemolysis and diffuse bleeding from coagulopathy. The patient required packed red cells, platelets, fresh frozen plasma and prothrombin complex. After admission to the intensive care unit persistent diffuse bleeding mainly caused by hyperfibrinolysis and renal failure occurred, which required blood transfusion, antifibrinolytic (tranexamic acid) and renal replacement therapy (continuous veno-venous hemodiafiltration with citrate) for 6 days. The patient recovered without any sequelae and was discharged 26 days later. Placental separation with new onset peripartum hypertension is to be interpreted as a precursor of severe gestosis and associated complications, especially disseminated intravascular coagulation (DIC), acute renal failure and pleural effusion. A differentiation between a rapid drop in hemoglobin concentration secondary to hemolysis in postpartum HELLP syndrome rather than postpartum hemorrhage can be challenging. In addition, HELLP syndrome can lead to rapidly developing, fulminant hyperfibrinolysis in the context of DIC. Keys to successful management of postpartum gestosis and associated complications are early detection and perception of clinical and laboratory warning signs, a multidisciplinary approach with rapid and consistent targeted symptomatic therapy to save the mother and fetus.

[Unclear altered mental state and respiratory insufficiency following multiple injuries: fat embolism syndrome]. / Unklare Vigilanzstörung und respiratorische Insuffizienz nach Mehrfachverletzung: Fettemboliesyndrom.

Fat embolism syndrome is associated with respiratory failure, hypoxia, petechial rash, pyrexia and altered mental state. Signs and symptoms usually begin within 12-72 h after trauma. The pathophysiology, differential diagnosis and therapeutic options of fat embolism syndrome are described and the case of a 29-year-old motorcyclist with fractures of the lower extremities, coma and respiratory failure 24-36 h after an accident is reported. Based on the clinical signs and course, fat embolism syndrome was suspected which was substantiated by ophthalmic fundoscopy and magnetic resonance imaging of the head.

Automated identification of cancerous smears using various competitive intelligent techniques.

In this study the performance of various intelligent methodologies is compared in the task of pap-smear diagnosis. The selected intelligent methodologies are briefly described and explained, and then, the acquired results are presented and discussed for their comprehensibility and usefulness to medical staff, either for fault diagnosis tasks, or for the construction of automated computer-assisted classification of smears. The intelligent methodologies used for the construction of pap-smear classifiers, are different clustering approaches, feature selection, neuro-fuzzy systems, inductive machine learning, genetic programming, and second order neural networks. Acquired results reveal the power of most intelligent techniques to obtain high quality solutions in this difficult problem of medical diagnosis. Some of the methods obtain almost perfect diagnostic accuracy in test data, but the outcome lacks comprehensibility. On the other hand, results scoring high in terms of comprehensibility are acquired from some methods, but with the drawback of achieving lower diagnostic accuracy. The experimental data used in this study were collected at a previous stage, for the purpose of combining intelligent diagnostic methodologies with other existing computer imaging technologies towards the construction of an automated smear cell classification device.

An aphasia database on the internet: a model for computer-assisted analysis in aphasiology.

A web-based software model was developed as an example for data mining in aphasiology. It is used for educating medical and engineering students. It is based upon a database of 254 aphasic patients which contains the diagnosis of the aphasia type, profiles of an aphasia test battery (Aachen Aphasia Test), and some further clinical information. In addition, the cerebral lesion profiles of 147 of these cases were standardized by transferring the coordinates of the lesions to a 3D reference brain based upon the ACPC coordinate system. Two artificial neural networks were used to perform a classification of the aphasia type. First, a coarse classification was achieved by using an assessment of spontaneous speech of the patient which produced correct results in 87% of the test cases. Data analysis tools were used to select four features of the 30 available test features to yield a more accurate diagnosis. This classifier produced correct results in 92% of the test cases. The neural network approach is similar to grouping performed in group studies, while the nearest-neighbor method shows a design more similar to case studies. It finds the neurolinguistic and the lesion data of patients whose AAT profiles are most similar to the user's input. This way lesion profiles can be compared to each other interindividually. The Aphasia Diagnoser is available on the Web address http://fuzzy.iau.dtu.dk/aphasia.nsf and thus should facilitate a discussion about the reliability and possibilities of data-mining techniques in aphasiology.

[Hemodynamic effects of a ventriculo-cisternal perfusion of bupivacaine]. / Hämodynamische Effekte einer ventrikulo-zisternalen Perfusion mit Bupivacain im Tiermodell.

OBJECTIVES: The cardiotoxic properties of bupivacain have been well documented under in-vitro, as well as under in-vivo conditions. A further mechanism of cardiovascular impairment by bupivacaine via the central nervous system gained investigational interest in animal studies. The aim of our study was to demonstrate the effect of a ventriculocisternal perfusion of bupivacain on systemic hemodynamic variables and their reversibility by wash-out with mock-CSF. METHODS: After obtaining animal investional committee consent, nine anaesthetized and relaxed pigs were prepared for a ventriculocisternal perfusion (VCP). Hemodynamic data were obtained by invasive blood pressure measurements in the high and low pressure system as well as cardiac output (thermodilution technique), intracranial pressure and electrocardiogram. Systemic vascular resistance and stroke volume were calculated using standard formulas. A second group of three animals were exposed to an intravenous infusion of the same dose of bupivacain over the same period of time to rule out direct cardiac effects. After instrumentation baseline data were obtained (K0 1) under VCP with mock-CSF for 30 minutes. The mock-CSF was replaced by 0.05% bupivacaine in mock-CSF and VCP was continued with 3 ml.h-1 for 20 minutes. After administration of 500 micrograms bupivacaine data were collected (BU). The bupivacaine solution was replaced by mock-CSF and after twenty minutes hemodynamic measurement were repeated (K02). RESULTS: The intravenous administration of 500 micrograms bupivacaine had no effect on all measured variables. VCP of the same dose resulted in significant increase in heart rate, systolic, diastolic and mean arterial blood pressures. Left and right heart filling pressures as well as systemic vascular resistance were not affected while the stroke volume decreased. After continuation of VCP with mock-CSF hemodynamic changes were reversed. DISCUSSION: Our results demonstrate that bupivacaine initiates an indirect cardiovascular stimulating effect of a VCP with 500 micrograms of bupivacaine via the central nervous system. The intravenous administration of the same dose had no effect. The centrally mediated cardiovascular effect of bupivacaine was reversed by wash-out with mock-CSF. The cardiovascular stimulation observed in this animal experiment may be of clinical relevance as a potential sign of toxic effects of bupivacaine on the CNS.

Local brain surface temperature compared to temperatures measured at standard extracranial monitoring sites during posterior fossa surgery.

Mild hypothermia is assumed to protect against secondary brain injury. However, the accuracy of brain temperature estimation remains debatable if direct measurement in the target area is to be avoided or is impossible. Furthermore, intracerebral temperature gradients exist, especially under intraoperative conditions. We aimed to establish how brain surface temperatures (TBrain) relate to temperatures taken at standard sites in posterior fossa surgery. Ten patients undergoing cerebellopontine angle tumor removal were monitored for TBrain, esophageal temperature (TEso), bladder temperature (TBlad), ipsi- and contralateral tympanic membrane (TTymp-I, TTymp-C), and scalp temperatures (TScalp). During monitoring, TEso increased from 35.3+/-0.2 degrees C to 36.0+/-0.3 degrees C. After dura opening, TBrain was -0.14+/-0.1 degrees C below TEso. At the end of tumor removal, this difference increased to -0.43+/-0.31 degrees C (P < 0.05). TTymp-C was -0.29+/-0.18 degrees C below TBrain at dura opening. TTymp-C reflected the behavior of TEso adequately (r = 0.938), however, with a mean difference of -0.39+/-0.04 degrees C. In contrast, TTymp-I readings closely followed temperature changes in the area of surgery. TBlad reflected TEso except in periods of rapid temperature changes. In posterior fossa (PF) surgery, local TBrain is most accurately reflected by TEso. For clinical use TBlad and TTymp-C are also sufficient to assess brain surface temperature in the PF. Intraoperative surface cooling of the brainstem is less than the previously described cooling rate of exposed cerebral cortex.

[Regional distribution of predisposition to maligant hyperthermia in Germany: tate in 1997]. / Die regionale Verbreitung der Veranlagung zur Malignen Hyperthermie in Deutschland: Stand 1997.

Malignant hyperthermia (MH) is a rare autosomally dominantly hereditary and potentially life-threatening disease. The prevalence of the genetic MH predisposition is estimated as 1:10,000 to 1:20,000. In Germany no data on the regional distribution are available. Therefore, the purpose of this investigation is to summarise and present the epidemiological data of all German MH laboratories. Nine German hospitals offer the specific in vitro contracture test to diagnose the MH predisposition. All German MH laboratories carry out the examination in accordance with the standardised protocol of the European Malignant Hyperthermia Group. The laboratories were asked to provide the number of all patients investigated, excluding those suffering from other neuromuscular diseases, separated according to diagnostic groups and their places of residence, the number of the identified MH-families as well as the number of the clinically suspected and investigated MH cases with their places of residence. Eight MH laboratories provided the requested data. Until September 1997 a total of 2620 patients were investigated. In 865 patients (34%) MH suspicion was confirmed (diagnosis: MHS). 1494 patients (56%) were released by investigation from MH-suspicion (diagnosis: MHN). In 261 patients (10%) the MH-predisposition remained unsolved (diagnosis: MHE). 580 MH families were identified. Among 2620 patients 757 were clinically suspected MH cases. 35% of these suspected MH cases were classified as MHS, 10% as MHE and 55% as MHN. The documentation of the patients places of residence classified as MHS and MHE into a map of Germany demonstrates an exhaustive distribution with an increased regional prevalence in the areas of the MH laboratories. This concentration in the area of the MH laboratories becomes even more evident, when the places of residence of the MH suspected cases are demonstrated. In conclusion, the distribution of the MH predisposition is uniform and exhaustive in Germany. The presented regional concentration of clinically suspected MH cases among the MH laboratories is mainly interpreted as an expression of effective regional education and information. Considering the overall incidence of the MH predisposition as described above only 15-20% of the MH patients have so far been identified. The MH laboratories have already released about 10,000 patients from the suspicion of MH predisposition. A preliminary prevalence of at least 1:60,000 to 1:80,000 in Germany can be estimated according to the presented data.