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4606 citation(s) found for "Na, Brian".

Vestibular schwannoma surgery in the elderly: a matched cohort study
Abel, Kathryn M. Van , Carlson, Matthew L. , Driscoll, Colin L. W., Neff, Brian A., Link, Michael J. , Van Abel, Kathryn M

Journal of Neurosurgery | July 19, 2013 | Volume: 120 | Issue: 1 | Pages: 207-217

10.3171/2013.6.jns122433 | PMID 23870020 Get It

Object The authors' objective was 2-fold: 1) to compare outcomes of microsurgical resection for vestibular schwannoma (VS) between patients aged 70 years or older and patients younger than 70 years and 2) to test the hypothesis that symptomatic tumors in elderly patients represent a more aggressive variant of VS than those in younger adults, resulting in increased morbidity and a higher rate of recurrence after subtotal resection (STR). Methods A retrospective matched cohort study was conducted. Patients aged 70 years or older who had undergone microsurgical resection of VS were matched to adult patients younger than 70 years; the matching was performed on the basis of surgical approach, completeness of resection, and tumor size. Associations between clinical, radiographic, and surgical data and postoperative outcome were analyzed using conditional logistic regression. Results Twenty patients aged 70 years or older (mean age ± SD 75.9 ± 5.3, range 70–86 years) were identified and matched to a cohort of younger adult patients (mean age ± SD 55.7 ± 13.8, range 25–69 years). The mean tumor size in both groups was approximately 3 cm. Overall, the elderly patients had a poorer preoperative American Society of Anesthesiology physical status score (p = 0.038), were more likely to report imbalance (OR 9.61, p = 0.016), and more commonly exhibited compromised balance and coordination (OR 9.61, p = 0.016) than patients in the younger cohort. There were no differences between the 2 cohorts in perioperative complications (p = 0.26) or facial nerve function (p > 0.5) at any time. The elderly patients were 13 times more likely to have long-term postoperative imbalance (OR 13.00, p = 0.013) than the younger patients. Overall, 9 tumors recurred among 32 patients undergoing STR; 6 of these patients underwent additional interventions (stereotactic radiosurgery in 5 patients and microsurgery in 1) and showed no evidence of tumor progression at the last follow-up. The median growth rate of the recurrent tumor in the 6 elderly patients was 4.8 mm/year (range 2.1–14.9 mm/year) and, in the 3 control patients, 2.2 mm/year (range 1.9–4.0 mm/year). Overall, the mortality data showed a trend toward statistical significance (p = 0.068) with a higher risk of death in the elderly. Conclusions As the number of elderly patients with VS increases, microsurgical resection will remain an important management option for these patients. Despite a poorer preoperative physical status in elderly patients, their morbidity profiles are similar to those in adult patients younger than 70 years. However, elderly patients may require longer convalescence due to prolonged postoperative imbalance. Not surprisingly, overall diminished functional reserve and advanced comorbidities may increase the mortality risk associated with surgical intervention in the elderly patients. Finally, there was a high risk of further tumor growth following STR in the elderly patients (6 [37.5%] of 16), underscoring the need for close postoperative radiological surveillance and consideration of early stereotactic radiosurgery for the tumor remnant following the STR.
Infectious Diseases Physicians’ Attitudes and Practices Related to Complementary and Integrative Medicine: Results of a National Survey
Shere-Wolfe, Kalpana D. , Tilburt, Jon C. , Berman, Brian , Chesney, Margaret A. , D’Adamo, Christopher R.

Evidence-Based Complementary and Alternative Medicine | July 14, 2013 | Volume: 2013 | Issue: No issue available | Pages: 1-8

10.1155/2013/294381 | PMID 23935658 Get It

Background. Complementary and alternative medicine (CAM) and integrative medicine (IM) modalities are widely used by patients, including those with infectious diseases (ID).Methods. One thousand randomly selected ID practitioners were surveyed. The survey was divided into domains related to familiarity and recommendation, beliefs and attitudes, and use of CAM/IM modalities.Results. The response rate was 31%. ID physicians were most familiar with vitamin and mineral supplementation (83%), massage (80%), acupuncture (79%), chiropractic (77%), yoga (74%), and herbal medicine (72%). ID physicians most recommended vitamin and mineral supplementation (80%) and massage (62%). Yoga, meditation, and acupuncture were recommended by 52%, 45%, and 46%, respectively. Drug interactions, clinical research, and knowledge of CAM/IM modalities were factors that were considered a major influence. Almost 80% of respondents indicated an interest in IM versus 11% for CAM. Most respondents (75%) felt that IM modalities are useful, and more than 50% believed that they could directly affect the immune system or disease process.Conclusion. ID physicians expressed a markedly greater interest for IM versus CAM. They appear to be familiar and willing to recommend some CAM/IM modalities and see a role for these in the management of certain infectious diseases. Data regarding clinical efficacy and safety appear to be important factors.
Cardiac Troponin Elevation Predicts Mortality in Patients Undergoing Orthotopic Liver Transplantation
Snipelisky, David , Donovan, Sean, Levy, Michael , Satyanarayana, Raj, Shapiro, Brian P.

Journal of Transplantation | July 14, 2013 | Volume: 2013 | Issue: No issue available | Pages: 1-6

10.1155/2013/252838 | PMID 23956840 Get It

Introduction. While patients undergoing orthotopic liver transplantation (OLT) have high cardiovascular event rates, preoperative risk stratification may not necessarily predict those susceptible patients. Troponin T (TnT) may help predict patients at risk for cardiovascular complications.Methods. Consecutive patients undergoing OLT at Mayo Clinic in Florida between 1998 and 2010 who had TnT obtained within 10 days following surgery were included. Three groups were compared based on TnT level: (1) normal (TnT≤0.01 ng/mL), (2) intermediate (TnT 0.02–0.11 ng/mL), and (3) elevated (TnT>0.11 ng/mL). Overall and cardiovascular mortality was assessed.Results. Of the 78 patients included, there was no difference in age, gender, severity of liver disease, and echocardiographic findings. Patients in the normal and intermediate TnT groups had a lower overall mortality rate (14.3% and 0%, resp.) when compared with those with elevated TnT (50%;P=0.001). Patients in the elevated TnT group had a cardiovascular mortality rate of 37.5% compared with 1.4% in the other groups combined (P<0.01). The elevated TnT group had a much higher mortality rate when compared with those in the intermediate group (P<0.0001).Conclusion. TnT may accurately help risk stratify patients in the early postoperative setting to better predict cardiovascular complications.
Expert consensus for multi-modality imaging evaluation of cardiovascular complications of radiotherapy in adults: a report from the European Association of Cardiovascular Imaging and the American Society of Echocardiography
Lancellotti, Patrizio , Badano, Luigi P. , Bergler‐Klein, Jutta , Bogaert, Jan , Davin, Laurent , Coucke, Philippe, Dulgheru, Raluca, Edvardsen, Thor , Gaemperli, Oliver , Griffin, Brian P. , Heidenreich, Paul A. , Plana, Juan Carlos , Port, Steven C. , Scherrer‐Crosbie, Marielle , Schwartz, Ronald G. , Sebag, Igal A., Voigt, Jens‐Uwe , Wann, Samuel , Yang, Phillip C. , Nkomo, Vuyisile T. , Cosyns, Bernard , Galderisi, Maurizio , Nieman, Koen , Voigt, Jens-Uwe

European Heart Journal – Cardiovascular Imaging | July 11, 2013 | Volume: 14 | Issue: 8 | Pages: 721-740

10.1093/ehjci/jet123 | PMID 23847385 Get It

Abstract Cardiac toxicity is one of the most concerning side effects of anti-cancer therapy. The gain in life expectancy obtained with anti-cancer therapy can be compromised by increased morbidity and mortality associated with its cardiac complications. While radiosensitivity of the heart was initially recognized only in the early 1970s, the heart is regarded in the current era as one of the most critical dose-limiting organs in radiotherapy. Several clinical studies have identified adverse clinical consequences of radiation-induced heart disease (RIHD) on the outcome of long-term cancer survivors. A comprehensive review of potential cardiac complications related to radiotherapy is warranted. An evidence-based review of several imaging approaches used to detect, evaluate, and monitor RIHD is discussed. Recommendations for the early identification and monitoring of cardiovascular complications of radiotherapy by cardiac imaging are also proposed.
Validation of Computerized Automatic Calculation of the Sequential Organ Failure Assessment Score
Harrison, Andrew M. , Yadav, Hemang , Pickering, Brian W. , Cartin‐Ceba, Rodrigo , Herasevich, Vitaly , Harrison, Andrew Marc , Herasevich, Vitaly

Critical Care Research and Practice | July 9, 2013 | Volume: 2013 | Issue: No issue available | Pages: 1-8

10.1155/2013/975672 | PMID 23936639 Get It

Purpose. To validate the use of a computer program for the automatic calculation of the sequential organ failure assessment (SOFA) score, as compared to the gold standard of manual chart review.Materials and Methods. Adult admissions (age > 18 years) to the medical ICU with a length of stay greater than 24 hours were studied in the setting of an academic tertiary referral center. A retrospective cross-sectional analysis was performed using a derivation cohort to compare automatic calculation of the SOFA score to the gold standard of manual chart review. After critical appraisal of sources of disagreement, another analysis was performed using an independent validation cohort. Then, a prospective observational analysis was performed using an implementation of this computer program in AWARE Dashboard, which is an existing real-time patient EMR system for use in the ICU.Results. Good agreement between the manual and automatic SOFA calculations was observed for both the derivation (N=94) and validation (N=268) cohorts: 0.02 ± 2.33 and 0.29 ± 1.75 points, respectively. These results were validated in AWARE (N=60).Conclusion. This EMR-based automatic tool accurately calculates SOFA scores and can facilitate ICU decisions without the need for manual data collection. This tool can also be employed in a real-time electronic environment.
Participation in Cardiac Rehabilitation and Survival After Coronary Artery Bypass Graft Surgery
Pack, Quinn R. , Lahr, Brian D. , Greason, Kevin L. , Squires, Ray W. , Thomas, Randal J. , Goel, Kashish , López-Jiménez, Francisco , Zhang, Zixin , Thomas, Randal

Circulation | July 9, 2013 | Volume: 128 | Issue: 6 | Pages: 590-597

10.1161/circulationaha.112.001365 | PMID 23836837 Get It

Background— Cardiac rehabilitation (CR) is recommended for all patients after coronary artery bypass surgery, yet little is known about the long-term mortality effects of CR in this population. Methods and Results— We performed a community-based analysis on residents of Olmsted County, Minnesota, who underwent coronary artery bypass surgery between 1996 and 2007. We assessed the association between subsequent outpatient CR attendance and long-term survival. Propensity analysis was performed. Cox proportional hazards regression was then used to assess the association between CR attendance and all-cause mortality adjusted for the propensity to attend CR. We identified 846 eligible patients (age 66±11 years, 76% men, and 96% non-Hispanic whites) who survived at least 6 months after surgery, of whom 582 (69%) attended CR. During a mean (±SD) follow-up of 9.0±3.7 years, the 10-year all-cause Kaplan-Meier mortality rate was 28% (193 deaths). Adjusted for the propensity to attend CR, participation in CR was associated with a 10-year relative risk reduction in all-cause mortality of 46% (hazard ratio, 0.54; 95% confidence interval, 0.40–0.74; P <0.001) and a 10-year absolute risk reduction of 12.7% (number needed to treat=8). There was no evidence of a differential effect of CR on mortality with respect to age (≥65 versus <65 years), sex, diabetes, or prior myocardial infarction. Conclusions— CR attendance is associated with a significant reduction in 10-year all-cause mortality after coronary artery bypass surgery. Our results strongly support national standards that recommend CR for this patient group.
Autologous haematopoietic cell transplantation for non‐Hodgkin lymphoma with secondary CNS involvement
Wang, Zhiwei , Zhang, Mei‐Jie , Bolwell, Brian J., Chen, Andy I. , Fenske, Timothy S. , Freytes, César O. , Gibson, John, Hayes‐Lattin, Brandon , Holmberg, Leona , Inwards, David J. , Isola, Luis , Khoury, H. Jean , Lewis, Victor , Maharaj, Dipnarine , Munker, Reinhold , Phillips, Gordon L., Rizzieri, David A. , Rowlings, Philip A., Saber, Wael , Satwani, Prakash , Waller, Edmund K. , Maloney, David G. , Montoto, Silvia , Laport, Ginna G. , Hari, Parameswaran , Holmberg, Leona , Chen, Andy , Maziarz, Richard Thomas , Gale, Robert Peter , Vose, Julie M. , Lazarus, Hillard M. , Waller, Edmund K , Montoto, Silvia , Hari, Parameswaran

British Journal of Haematology | July 6, 2013 | Volume: 162 | Issue: 5 | Pages: 648-656

10.1111/bjh.12451 | PMID 23829536 Get It

SummaryPre‐existing central nervous system (CNS) involvement may influence referral for autologous haematopoietic cell transplantation (AHCT) for patients with non‐Hodgkin lymphoma (NHL). The outcomes of 151 adult patients with NHL with prior secondary CNS involvement (CNS+) receiving an AHCT were compared to 4688 patients without prior CNS lymphoma (CNS−). There were significant baseline differences between the cohorts. CNS+ patients were more likely to be younger, have lower performance scores, higher age‐adjusted international prognostic index scores, more advanced disease stage at diagnosis, more aggressive histology, more sites of extranodal disease, and a shorter interval between diagnosis and AHCT. However, no statistically significant differences were identified between the two groups by analysis of progression‐free survival (PFS) and overall survival (OS) at 5 years. A matched pair comparison of the CNS+ group with a subset of CNS− patients matched on propensity score also showed no differences in outcomes. Patients with active CNS lymphoma at the time of AHCT (n = 55) had a higher relapse rate and diminished PFS and OS compared with patients whose CNS lymphoma was in remission (n = 96) at the time of AHCT. CNS+ patients can achieve excellent long‐term outcomes with AHCT. Active CNS lymphoma at transplant confers a worse prognosis.
Cardiac Device Complications in the Cognitively Impaired
Jama, Abdi, Hodge, David O. , Herges, Regina M., Asirvatham, Samuel, Cha, Yong‐Mei , Powell, Brian D. , Rea, Robert F., Friedman, Paul A. , Asirvatham, Samuel J. , Rabinstein, Alejandro A. , Asirvatham, Samuel J

Pacing and Clinical Electrophysiology | July 4, 2013 | Volume: 36 | Issue: 9 | Pages: 1061-1067

10.1111/pace.12205 | PMID 23822919 Get It

BackgroundPatients with preexisting mild cognitive impairment or dementia may be at increased risk for developing cardiac device complications due to an impaired ability to follow postimplant care instructions. We sought to determine whether rates of infection, lead dislodgement, or appropriate or inappropriate implantable cardioverter defibrillator (ICD) shocks are increased in this population.MethodsMedical charts of 561 patients with mild cognitive impairment or dementia who underwent pacemaker (PM) or ICD implantation between January 2002 and October 2009 at Mayo Clinic were identified. A total of 134 patients who were diagnosed with cognitive impairment or dementia before device implantation or within 1 year of implantation were compared with 134 matched controls. Information was collected on patient characteristics, comorbid medical conditions, ejection fraction, complications, device type, device therapy, and mortality. Device information was prospectively entered into a database and retrospectively reviewed.ResultsOf the 134 patients with mild cognitive impairment and dementia, 99 underwent PM implantation and 35 underwent ICD implantation. Compared to controls, there was no difference in patient characteristics, ejection fraction, or comorbidities except for diabetes, which was more prevalent in the cognitively impaired and demented group (18.7% vs 30.6%, P = 0.02). There was no difference in device therapy and complications (14.4% vs 5.8%, P = 0.268). However, there was a decreased survival in patients with cognitive impairment and dementia when compared to the control group (42% vs 67% at 5 years, P = 0.007).ConclusionPatients with cognitive impairment and standard device indications are not at increased risk for device complications and therapy but their survival is much lower than in matched controls. The cause of this lower survival is unknown but may be related to the underlying neurological disease. Presence of cognitive impairment should therefore be considered when contemplating implantation of a cardiac device.
Nitrofurantoin-Induced Granulomatous Interstitial Pneumonia
Sakata, Kenneth K. , Larsen, Brandon T. , Boland, Jennifer M. , Palen, Brian N., Muhm, John R., Helmers, Richard A. , Tazelaar, Henry D. , Palen, Brian, Tazelaar, Henry D.

International Journal of Surgical Pathology | June 28, 2013 | Volume: 22 | Issue: 4 | Pages: 352-357

10.1177/1066896913492849 | PMID 23812013 Get It

Nitrofurantoin-induced lung toxicity is relatively common, but rare histologic patterns sometimes occur that may make diagnosis difficult. We present the case of a 69-year-old woman taking prophylactic nitrofurantoin for urinary tract infections, who developed granulomatous interstitial pneumonia. She improved with cessation of nitrofurantoin, without other therapy. To our knowledge, this is the fourth reported case of granulomatous interstitial pneumonia associated with nitrofurantoin, and the first to show complete resolution with cessation of the drug alone, without steroids. It is important to recognize that idiosyncratic reactions to nitrofurantoin can produce a wide spectrum of histologic patterns. Of these patterns, granulomatous interstitial pneumonia is a rarely evidenced manifestation (possibly because few cases undergo a confirmatory lung biopsy). Recognition of granulomatous interstitial pneumonia as a manifestation of nitrofurantoin toxicity can aid in early identification of the reaction and prompt withdrawal of the drug, both of which are essential to prevent long-term complications.
MR elastography derived shear stiffness-a new imaging biomarker for the assessment of early tumor response to chemotherapy
Pepin, Kay , Glaser, Kevin J. , Mariappan, Yogesh K. , Reuland, Brian, Ziesmer, Steven C., Carter, Rickey E. , Ansell, Stephen M. , McGee, Kiaran P. , Chen, Jun , Ehman, Richard L. , Carter, Rickey E , Mariappan, Yogesh Kannan

Magnetic Resonance in Medicine | June 25, 2013 | Volume: 71 | Issue: 5 | Pages: 1834-1840

10.1002/mrm.24825 | PMID 23801372 Get It