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At least 649 records · Page 36Linked to original sources
PubMed1994

Rotational injury of cervical facets: CT analysis of fracture patterns with implications for management and neurologic outcome.

OBJECTIVE: Imaging studies of patients with rotational facet injuries of the cervical spine were retrospectively reviewed to determine the prevalence and pattern of associated fractures, to correlate injury pattern with recommended surgical stabilization, and to assess neurologic outcome. MATERIALS AND METHODS: Radiographs and CT scans obtained for 40 consecutive patients with rotational facet injuries of the cervical spine during a 70-month period were retrospectively reviewed to determine injury level, presence, and orientation of facet fractures, and concurrent nonfacet injuries. Imaging findings were reviewed to assess the likelihood of instability and to determine the most appropriate stabilization requirement. Medical records were reviewed to ascertain mechanism of injury, initial neurologic deficit, and surgical findings. RESULTS: Among the 40 patients with cervical rotational facet injuries, 11 (27%) had pure unilateral facet dislocation or subluxation without associated fractures, and 29 (73%) had concurrent facet fractures involving the inferior facet of the rotated vertebra (n = 13), the superior facet of the subjacent vertebra (n = 9), or both (n = 7). Injury of the rotated vertebra was unilateral in 22 patients but bilateral in 18 patients. Facet fractures frequently extended into the ipsilateral lamina or articular pillar or both. An avulsion fracture from the posteroinferior aspect of the rotated vertebral body, indicating disk disruption, occurred in 10 patients (25%), and seven patients (17%) had complete isolation of an articular pillar. Facet fractures were confirmed for 27 patients who underwent surgical stabilization. Neurologic deficits developed in 29 (73%) of the 40 patients and included radiculopathy in 11 patients and cord syndromes in 18 patients. Pure dislocation without a facet fracture was more likely to lead to a cord syndrome (p = .006). CONCLUSION: Cervical rotational facet injuries are often accompanied by facet fractures and bilateral damage of the rotated vertebra. These injuries contribute to rotational instability and require specific internal fixation based on a precise delineation of all injuries. Facet dislocations without fractures have a significantly higher association with cord syndromes than do rotational facet injuries with fractures. CT, particularly with parasagittal reformations, is valuable in identifying all injuries of the rotated and subjacent vertebrae.

Adolescent↗
PubMed1998

Future directions in utilization review: the role of transfusion algorithms.

Transfusion practice guidelines and retrospective utilization review have been ineffective in curtailing the inappropriate use of blood and blood products, particularly in cardiac surgical patients. Patients undergoing cardiac surgery with cardiopulmonary bypass (CPB) are at increased risk for excessive perioperative blood loss requiring transfusion of blood products. Recent evaluations have focused on the use of point-of-care coagulation assays for patient-specific therapy. Blood component administration in patients with excessive post-CPB bleeding is generally empiric, in part related to the times required to perform of laboratory-based tests. Methods are now available for rapid, on-site assessment of coagulation assays to allow appropriate, targeted therapy for acquired hemostatic abnormalities. Recent studies indicate that a rapid evaluation of thrombocytopenia and coagulation factor deficiencies, coupled with transfusion algorithms, can facilitate the optimal administration of transfusion-based therapy in patients who exhibit excessive bleeding after CPB. The use of point-of-care assays and transfusion algorithms may provide an effective concurrent method of utilization review of blood products in the surgical setting.

Algorithms↗
PubMed1982

Effects of concurrent drug therapy on technetium Tc-99m gluceptate biodistribution.

Drug interactions with technetium Tc-99m gluceptate resulting in altered biodistribution were studied using chart review and animal tests. Charts of nine patients who had abnormal gallbladder uptake of technetium Tc-99m gluceptate during a two-year period were reviewed to obtain data such as concurrent drug therapy, primary diagnosis, and laboratory values. Adult New Zealand white rabbits were then used for testing the biodistribution of technetium Tc-99m gluceptate when administered concurrently with possibly interacting drugs identified in the chart review--penicillamine, penicillin G potassium, penicillin V potassium, acetaminophen, and trimethoprim-sulfamethoxazole. Chart review revealed no conclusive patterns of altered biodistribution associated with other factors. The data did suggest the possibility that the five drugs listed above might cause increased hepatobiliary clearance of the radiopharmaceutical. Animal tests showed that i.v. penicillamine caused substantial distribution of radioactivity into the gallbladder and small bowel. Minimally increased gallbladder radioactivity occurred when oral acetaminophen and trimethoprim-sulfamethoxazole were administered concurrently. Oral and i.v. penicillins did not increase gallbladder activity. Penicillamine may cause substantial alteration of the biodistribution of technetium Tc-99m gluceptate.

Acetaminophen↗
PubMed2000

[Corroboration of concurrent assessment of inappropriate hospitalization with retrospective evaluation based on patient records].

BACKGROUND AND PURPOSE: Since the availability of a German adaptation of the "appropriateness Evaluation Protocol" (AEP) for hospital utilization review, physicians and health care managers were concerned about a potential overestimation of the extent of inappropriate hospital use in a retrospective assessment. The objective was to assess the agreement of concurrent and retrospective assessment of inappropriate hospital use. METHODS: The appropriateness of 42 admissions to surgical wards in a teaching hospital was tested concurrent to the admission. In 25 hospitalized patients the appropriateness of hospital days was assessed. Results were compared with the retrospective testing of the same patients after three months. RESULTS: Agreement between concurrent and retrospective assessment within the same reviewer was 86% of admissions (95% CI = 75%-96%) and 96% of hospital days (88%-100%). Kappa showed values of 0.85 and 0.78, which can be described as excellent. A comparison of two different reviewers, one testing concurrently, the other retrospectively showed agreements of 86% and 90%. The proportion of inappropriate days was the same in both designs. CONCLUSIONS: The results refute prior concerns that a retrospective assessment of the appropriateness of hospital use is impossible because in a retrospective design important clinical information would remain unconsidered or clinical information not yet available at that time would be used for the evaluation. The possibility of an incorrect assessment due to a retrospective design is within the variability inherent to the instrument. Despite the strong agreement, the small sample of surgical patient limits the generalizability of results.

Concurrent Review↗
PubMed2000

Sarcoidosis and systemic vasculitis.

BACKGROUND: Systemic vasculitis is an unusual complication of sarcoidosis. Over a 10-year period, the authors have provided care for six patients who had features of both sarcoidosis and vasculitis. Vasculitis could not be attributed to other causes. OBJECTIVES: To report six patients (five children) who had sarcoidosis and systemic vasculitis and compare our experience with previous literature. To better delineate the clinical spectrum of sarcoid vasculitis and its response to therapy. METHODS: Retrospective analysis and a Medline literature review of sarcoid and concurrent vasculitis from 1966. RESULTS: Our six patients had systemic illnesses that included fever, peripheral adenopathy, hilar adenopathy, rash, pulmonary parenchymal disease, musculoskeletal symptoms, and scleritis or iridocyclitis. Biopsies revealed features compatible with the diagnosis of sarcoidosis or necrotizing sarcoid granulomata in either skin, lymph node, lung, synovium, bone, bone marrow, liver, trachea, or sclera. Arteriography showed features of large vessel vasculitis in three patients, all of whom were African American, whereas patients with small vessel vasculitis were white. Prior reports of sarcoid and vasculitis included 14 adults, of whom half had predominantly small vessel disease, and half had medium- or large-sized vessel disease. Eight previously reported children included seven with primarily large vessel sarcoid vasculitis. Racial background was noted in 15 reported cases and included whites (6), African Americans (5), and Asians (4). Among the authors' six patients, four improved when treated with prednisone alone. However, relapses occurred when the drug was tapered or withdrawn. CONCLUSIONS: Sarcoidosis may be complicated by systemic vasculitis that can affect small- to large-caliber vessels. Sarcoid vasculitis can mimic hypersensitivity vasculitis, polyarteritis nodosa, microscopic polyangiitis, or Takayasu's arteritis. African American and Asian patients are disproportionately represented among cases with large vessel involvement. Corticosteroid and cytotoxic therapy is palliative for all forms of sarcoid vasculitis. However, relapses and morbidity from disease and treatment is common.

Adolescent↗
PubMed2000

The incidence of antimicrobial allergies in hospitalized patients: implications regarding prescribing patterns and emerging bacterial resistance.

BACKGROUND: The development of antimicrobial guidelines is one way in which institutions attempt to control emerging resistance, but the real challenge falls on promoting and ensuring adherence to these guidelines. Investigating reasons for the prescribing of alternative antimicrobial agents outside of these guidelines is crucial for modifying practices that may adversely impact institutional antimicrobial goals. METHODS: Retrospective cross-referencing of computerized pharmacy printouts and concurrent manual medical record review. RESULTS: Approximately 25% (470/1893) of the patients requiring antimicrobial therapy reported an allergy to at least 1 antimicrobial agent. The most commonly reported antimicrobial allergy was penicillin (295/1893 [15.6%]). Eighty-five patients (18.1%) reported having an allergy to 2 or more antimicrobial agents. Only 4% (27/601) of the reported antimicrobial allergies contained documentation as to the nature of the specific allergic reactions, while a manual medical record review revealed that 32% (23/73) of the antimicrobial allergies contained documentation of the specific allergic reaction. Ninety-eight (39. 7%) of 247 patients reporting an allergy only to penicillin and/or cephalosporin received vancomycin in comparison with 247 (17.4%) of 1423 patients without any antimicrobial allergies (P<.001). Similarly, 53 (21.5%) of 247 patients with reported penicillin and/or cephalosporin allergies received levofloxacin compared with 114 (8.0%) of 1423 patients without any antimicrobial allergy (P<. 001). CONCLUSION: The incidence of penicillin allergy at our institution exceeds population averages. This finding, in combination with limited documentation of drug allergies, appears to lead to the prescribing of alternative antimicrobial agents that do not fit into institutional antimicrobial guidelines and, in some instances, may put the patient at risk for infection and/or colonization with resistant organisms. Use of these alternative agents may adversely impact the ability to manage emerging antimicrobial resistance.

Anti-Bacterial Agents↗
PubMed2004

Blastic mantle cell lymphoma developing concurrently in a patient with chronic myelogenous leukemia and a review of the literature.

Non-Hodgkin's lymphoma (NHL) occurring as a synchronous malignancy with chronic myelogenous leukemia (CML) is rare. To our knowledge, this is the first case reported of a patient who developed mantle cell lymphoma (MCL) after therapy with imatinib mesylate for CML. After a 3-year history of CML, the patient developed a lymphocytosis associated with diarrhea, anorexia, and weight loss. Imaging studies revealed abdominal adenopathy and extensive lymphomatous infiltration of the liver, stomach, pancreas, and kidneys. Flow cytometric and cytogenetic studies were consistent with MCL. Fluorescence in situ hybridization (FISH) of the bone marrow revealed a genetically distinct lymphoid neoplasm rather than an extramedullary blast crisis of CML. The development of lung cancer, prostate cancer, CML and MCL in this patient suggests a genetic predisposition, although other factors, including environmental exposures and therapy with imatinib mesylate could have had a contributory or synergistic role in the development of MCL.

Aged↗
PubMedDate not supplied

Relationship between vocal cord paralysis and benign thyroid disease.

BACKGROUND: Vocal cord paralysis is generally associated with advanced thyroid malignancy. It may also be present in the setting of benign thyroid disease. This association may be incidental as well as causal. METHODS: Retrospective review of cases with concurrent diagnosis of vocal cord paralysis and benign thyroid disease. RESULTS: Eight cases found, all with documented vocal cord paralysis, by laryngoscopy. Four patients had nodular thyroid disease, but in two it was contralateral to the recurrent laryngeal nerve paralysis. The remaining patients had goiters of various sizes. Six patients were euthyroid, two on thyroid hormone replacement. Two patients were thyrotoxic: one had Graves' disease and the other had subacute thyroiditis. CONCLUSIONS: Vocal cord paralysis can be the result of benign thyroid disease by such mechanisms as compression, stretching, or inflammation. Malignant thyroid disease should always be ruled out in structural thyroid abnormalities. Vocal cord paralysis can also be an incidental finding unrelated to thyroid abnormality.

Aged↗
PubMed1992

The use of GM-CSF in AIDS.

Hematopoietic growth factors may mitigate the cytopenias that frequently complicate HIV disease or its treatment. Clinical and in vitro studies have indicated the ability of granulocyte-macrophage colony-stimulating factor (GM-CSF), granulocyte colony-stimulating factor (G-CSF) or erythropoietin (EPO) to overcome the myelosuppression of HIV or many of the drug therapies used in the care of HIV-infected individuals. In addition, neutrophil or monocyte functional abnormalities observed in AIDS patients may be improved by the use of GM-CSF. Issues which may distinguish the use of hematopoietic growth factors in AIDS as compared with in other clinical settings include: 1) interaction of the growth factor with other cytokines which are aberrantly expressed, 2) direct effects of the growth factor on the replicative activity of HIV, and 3) potential interactions of the growth factor with other concurrently administered medications. This review focuses on the potential roles and limitations of growth factor use in AIDS and reviews the clinical studies using GM-CSF in HIV-infected individuals.

Acquired Immunodeficiency Syndrome↗
PubMed2004

How representative of everyday clinical populations are schizophrenia patients enrolled in clinical trials?

INTRODUCTION: There has been considerable discussion whether clinical trials accurately depict everyday practice. Restrictive inclusion/exclusion criteria, ethical considerations, differences in the severity of psychopathology between clinical and trial patients, or safety issues may bias results, which in turn may rather represent outcome for the "ideal" than for the "average"patient. Therefore, translation into psychiatric practice may be difficult. METHODS: A retrospective case-control study was performed. Schizophrenia inpatients at the LMU Department of Psychiatry, Munich, Germany, who had participated in clinical trials were compared to regular patients serving as controls. Probands and controls were matched by DSM-IV diagnosis, gender and age. The AMDP module, CGI and GAF were used to compare psychopathology. In addition, charts were reviewed for medication dosages, concurrent medical and neurological illness, and clinical history such as age of onset or family history. RESULTS: A total of 200 probands (100/100) were enrolled in the study. With respect to psychopathology, formally thought disordered or suicidal patients were significantly less likely to be study participants (n = 3) than controls (n = 22; p < or = 0.05). Similarly, negative schizophrenia symptoms were significantly less often present in study participants (n = 17) than in controls (n = 38; p < or = 0.05). Study participants were also medically and neurologically healthier than controls. (p = 0.05 respectively). No differences in overall illness severity as depicted by CGI and GAF were observed. CONCLUSION: We found the patients included in our clinical trials representative of the patient encountered in routine clinical practice. Adherence to inclusion and exclusion criteria prevents inclusion of severely ill (e. g. suicidal) patients requiring a more intensive treatment setting. Illness severity was found to be similar in trial participants and controls, and indicates an overall comparably severe psychopathology. The more chronic, rather treatment refractory patients were also not reflected in the trial participant pool; this population may arguably not represent the average clinical patient either. A more careful administration of antipsychotic medication was found in trial participants and may effectively be considered "good clinical practice".

Adult↗
PubMed2006

Concurrent FSGS and Hodgkin's lymphoma: case report and literature review on the link between nephrotic glomerulopathies and hematological malignancies.

BACKGROUND: The link between the nephrotic syndrome (NS) and malignancy was first described in 1922. In solid tumors, the NS is most often due to membranous glomerulonephropathy, whereas in common hematological malignancies, minimal-change disease predominates. Focal segmental glomerulosclerosis (FSGS) is among the least frequently reported renal lesion associated with malignancy. METHODS: We report a case of the simultaneous diagnoses of FSGS and Hodgkin's lymphoma, and review the literature on various nephrotic glomerulonephropathies associated with common leukemia and lymphoma. RESULTS: Although nephrotic glomerulonephropathies rarely occur in association with acute leukemia, they have often been described in chronic lymphocytic leukemia (CLL). Membranoproliferative glomerulonephropathy and membranous glomerulonephropathy are the most common lesions observed in CLL. Nephrotic glomerulonephropathies have also been well documented among patients with lymphomas, in particular, Hodgkin's lymphoma. While minimal-change disease is most commonly found in association with Hodgkin's lymphoma, more diverse and complex renal lesions are associated with non-Hodgkin's lymphoma. FSGS remains a rare association with hematological malignancies. CONCLUSIONS: Nephrotic glomerulonephropathies are not only linked to solid-organ tumors, but also to hematological malignancies. A thorough evaluation, including a physical examination for lymphadenopathy and organomegaly, as well as a hematological evaluation, must be performed in all patients presenting with nephrotic glomerulonephropathies.

Adult↗
PubMed1993

Analysis of early and late deaths on RTOG non-small cell carcinoma of the lung trials: comparison with CALGB 8433.

UNLABELLED: In a major study that showed a treatment advantage for induction chemotherapy followed by radiation therapy (CALGB 8433), there was a significantly (P = 0.02) lower proportion of patients dying within 105 days of registration in the chemotherapy/radiation arm than the radiation therapy arm; without this difference, the overall survival was marginally better (P = 0.059) for the chemotherapy/radiation group. A retrospective analysis of RTOG trials sought explanations for the phenomenon. MATERIALS AND METHODS: Patients who fit the CALGB eligibility criteria and received radiation therapy alone in four prospective trials of the RTOG conducted between 1983 and 1989 were analyzed to determine factors that distinguished patients dying within 105 days from longer survivors. Two were trials of altered fractionation and two used standard fractionation. Of 683 patients identified, 107 (15.7%) died within 105 days after registration. The log linear model was used to evaluate relationships between death within 105 days and known prognostic factors. Karnofsky performance status (KPS), < 90 vs. > or = 90, was the only factor significantly related to death within 105 days (P = 0.0052). A Cox model with the same factors plus fractionation and total dose found KPS and T-stage associated with overall survival (P = 0.0005 and 0.025, respectively). The choice of the hyperfractionation arm (HFX) for Phase III study (69.6 Gy at 1.2 Gy b.i.d.) was based in part on comparison with standard fractionation (STD) from a concurrent RTOG protocol, 8321. Review of early deaths showed that this HFX arm had a lower proportion of patients dying within 105 days (7.9%) than STD in 8321 (21.0%).(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗
PubMed1997

Intentional limited resection for selected patients with T1 N0 M0 non-small-cell lung cancer: a single-institution study.

OBJECTIVES: To comparatively evaluate lobectomy and limited resection for T1 N0 M0 non-small-cell lung cancer, we reviewed case series with concurrent nonrandomized controls. METHODS: Limited resection with curative intent was performed for 63 patients with T1 N0 M0 non-small-cell lung cancer over a 10-year period. These 63 patients included 46 patients who underwent a segmentectomy as an intentional limited resection. These patients had good pulmonary function and could tolerate a lobectomy in the management of their disease. The other 17 patients underwent wedge resection or segmentectomy as a compromised limited resection because they had poor pulmonary reserve or other limiting factors and could withstand a thoracotomy but could not tolerate a lobectomy in the management of their disease. RESULTS: The 5-year survival was 93% in the intentional resection group. The survival curve for this group was not different from that for 77 patients who underwent the standard operation (lobectomy plus complete mediastinal lymph node dissection) for T1 N0 M0 non-small-cell lung cancer during the same period. The frequency of local/regional recurrence in the intentional resection group was 8.7% (4/46); the recurrence in three patients was situated in the mediastinum. According to multivariate analysis, limited resection was not associated with poor survival. CONCLUSION: Segmentectomy with regional lymph node dissection, including the mediastinum, should be considered as an acceptable alternative treatment for selected patients with T1 N0 M0 disease.

Aged↗
PubMed1980

Dermatophytosis in patients with chronic mucocutaneous candidiasis.

We review the association of concurrent dermatophytic infections in patients with chronic mucocutaneous candidiasis and add twelve new patients to the seventeen previously reported ones. In sixty patients with chronic mucocutaneous candidiasis studied at the National Institutes of Health (NIH), twelve (20%) also had significant local or diffuse dermatophytosis. A comparison between candidiasis patients with and without dermatophytosis revealed no significant differences in their distribution within the various clinical syndromes of chronic mucocutaneous candidiasis nor in the immunologic responses that were tested. Failure to recognize coexistent dermatophytosis in candidiasis patients may lead to unsatisfactory responses to treatment.

Adult↗
PubMedDate not supplied

Shock wave-enhanced neovascularization at the tendon-bone junction: an experiment in dogs.

The purpose of the research was to study the phenomenon of neovascularization at the Achilles tendon-bone junction after low-energy shock wave application. The study was performed on eight mongrel dogs. The control specimens were obtained from the medial one-third of the right Achilles tendon-bone unit before shock wave application. Low-energy shock waves of 1000 impulses at 14 kV (equivalent to 0.18 mJ/mm2 energy flux density) were applied to the right Achilles bone-tendon junction. Biopsies were taken from the middle one-third of the Achilles tendon-bone junction at 4 weeks and from the lateral one-third at 8 weeks, respectively, after shock wave application. The features of microscopic examination included the number of new capillaries and muscularized vessels, the presence and arrangements of myofibroblasts, and the changes in bone. New capillary and muscularized vessels were seen in the study specimens which were obtained in 4 weeks and in 8 weeks after shock wave application, but none were seen in the control specimens before shock wave application. There was a considerable geographic variation in the number of new vessels within the same specimen. Myofibroblasts were not seen in the control specimens. Myofibroblasts with haphazard appearance and intermediate orientation fibers were seen in all study specimens obtained at 4 weeks and predominantly intermediate orientation myofibroblast fibers at 8 weeks. There were no changes in bone matrix, osteocyte activity, and vascularization within the bone. Two pathologists reviewed each specimen and concurrence was achieved in all cases. The results of the study suggested that low-energy shock wave enhanced the phenomenon of neovascularization at the bone-tendon junction in dogs.

Achilles Tendon↗
PubMed2002

Herbal hepatotoxicity.

Herbal hepatotoxicity is increasingly recognized as herbal medicines become more popular in industrialized societies. Some herbal products may potentially benefit people with liver disease; however, these benefits remain generally unproved in humans, and a greater awareness of potential adverse effects is required. Herbal use is often not disclosed, and this may result in a diagnostic delay and perpetuation or exacerbation of liver injury. Female gender may predispose to hepatotoxicity, and concomitant agents that induce cytochrome P450 enzymes may also increase individual susceptibility. The range of liver injury includes minor transaminase elevations, acute and chronic hepatitis, steatosis, cholestasis, zonal or diffuse hepatic necrosis, hepatic fibrosis and cirrhosis, veno-occlusive disease, and acute liver failure requiring transplantation. In addition to the potential for hepatotoxicity, drug-drug interactions between herbal medicines and conventional agents may affect the efficacy and safety of concurrent medical therapy. This review focuses on emerging hepatotoxins and patterns of liver injury, potential risk factors for herbal hepatotoxicity, and herb-drug interactions. Appropriate reporting and regulatory systems to monitor herbal toxicity are required, in conjunction with ongoing scientific evaluation of the potential benefits of phytotherapy.

Adverse Drug Reaction Reporting Systems↗
PubMedDate not supplied

Corneal edema after cataract surgery: incidence and etiology.

Corneal edema from inadequate endothelial pump function is one of the most common complications of cataract surgery. Various causes for this endothelial dysfunction can be divided into four categories including (a). mechanical injury, (b). inflammation/infection, (c). chemical injury, and (d). concurrent eye disease. This review serves as a basis for the diagnosis and treatment of this complication.

Cataract Extraction↗
PubMed2006

Transient vocal cord paralysis after fine-needle aspiration biopsy of thyroid tumor.

OBJECTIVE: Complications of thyroid fine-needle aspiration biopsy (FNAB) are exceedingly rare. Hematoma formation is the most commonly encountered complication. Infection and seeding of carcinoma cells in the needle track has also been reported in a rare case. Here we describe patients diagnosed as having transient vocal cord paralysis after FNAB of benign thyroid tumor. DESIGN: Retrospective review of patients with concurrent diagnosis of vocal cord paralysis after FNAB. MAIN OUTCOME: Among 10,974 patients who underwent FNAB, 4 patients showed vocal cord paralysis on laryngoscopy. These patients had solid and/or cystic lesion in the thyroid. Routine FNAB of the nodule was performed using a 23-gauge needle. Cytologic findings were benign tumor. Change of voice in the patients occurred 1 or 2 days after FNAB and vocal cord paralysis ipsilateral to FNAB was determined by flexible laryngoscopy. Vocal cord paralysis of all patients resolved spontaneously within 6 months (average, 4 months). CONCLUSION: Although the incidence of vocal cord paralysis in patients with thyroid tumor after FNAB is reported to be 0.036%, the true incidence is unknown because asymptomatic subjects are not screened. This report should alert the examiner to the possibility of vocal cord palsy after FNAB.

Aged↗