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Dive into the research topics where Alex B. Blair is active.

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Featured researches published by Alex B. Blair.


Journal of Pain and Symptom Management | 2017

Patient- and Caregiver-Reported Assessment Tools for Palliative Care: Summary of the 2017 Agency for Healthcare Research and Quality Technical Brief

Rebecca A. Aslakson; Sydney M. Dy; Renee F Wilson; Julie M. Waldfogel; Allen Zhang; Sarina R. Isenberg; Alex B. Blair; Joshua Sixon; Karl A. Lorenz; Karen A. Robinson

CONTEXT Assessment tools are data collection instruments that are completed by or with patients or caregivers and which collect data at the individual patient or caregiver level. OBJECTIVES The objectives of this study are to 1) summarize palliative care assessment tools completed by or with patients or caregivers and 2) identify needs for future tool development and evaluation. METHODS We completed 1) a systematic review of systematic reviews; 2) a supplemental search of previous reviews and Web sites, and/or 3) a targeted search for primary articles when no tools existed in a domain. Paired investigators screened search results, assessed risk of bias, and abstracted data. We organized tools by domains from the National Consensus Project Clinical Practice Guidelines for Palliative Care and selected the most relevant, recent, and highest quality systematic review for each domain. RESULTS We included 10 systematic reviews and identified 152 tools (97 from systematic reviews and 55 from supplemental sources). Key gaps included no systematic review for pain and few tools assessing structural, cultural, spiritual, or ethical/legal domains, or patient-reported experience with end-of-life care. Psychometric information was available for many tools, but few studies evaluated responsiveness (sensitivity to change) and no studies compared tools. CONCLUSION Few to no tools address the spiritual, ethical, or cultural domains or patient-reported experience with end-of-life care. While some data exist on psychometric properties of tools, the responsiveness of different tools to change and/or comparisons between tools have not been evaluated. Future research should focus on developing or testing tools that address domains for which few tools exist, evaluating responsiveness, and comparing tools.


Cancer Medicine | 2017

Long-term survival benefit of upfront chemotherapy in patients with newly diagnosed borderline resectable pancreatic cancer

Bikram Shrestha; Yifei Sun; Farzana A. Faisal; Victoria Kim; Kevin C. Soares; Alex B. Blair; Joseph M. Herman; Amol K. Narang; Avani S. Dholakia; Lauren M. Rosati; Amy Hacker-Prietz; Linda Chen; Daniel A. Laheru; Ana De Jesus-Acosta; Dung T. Le; Ross C. Donehower; Nilofar Azad; Luis A. Diaz; Adrian Murphy; Valerie Lee; Elliot K. Fishman; Ralph H. Hruban; Tingbo Liang; John L. Cameron; Martin A. Makary; Matthew J. Weiss; Nita Ahuja; Jin He; Christopher L. Wolfgang; Chiung Yu Huang

The use of neoadjuvant chemotherapy or radiation for borderline resectable pancreatic adenocarcinoma (BL‐PDAC) is increasing. However, the impact of neoadjuvant chemotherapy and radiation therapy on the outcome of BL‐PDAC remains to be elucidated. We performed a retrospective analysis of 93 consecutive patients who were diagnosed with BL‐PDAC and primarily followed at Johns Hopkins Hospital between February 2007 and December 2012. Among 93 patients, 62% received upfront neoadjuvant chemotherapy followed by chemoradiation, whereas 20% received neoadjuvant chemoradiation alone and 15% neoadjuvant chemotherapy alone. Resectability following all neoadjuvant therapy was 44%. Patients who underwent resection with a curative intent had a median overall survival (mOS) of 25.8 months, whereas those who did not undergo surgery had a mOS of 11.9 months. However, resectability and overall survival were not significantly different between the three types of neoadjuvant therapy. Nevertheless, 22% (95% CI, 0.13–0.36) of the 58 patients who received upfront chemotherapy followed by chemoradiation remained alive for a minimum of 48 months compared to none of the 19 patients who received upfront chemoradiation. Among patients who underwent curative surgical resection, 32% (95% CI, 0.19–0.55) of those who received upfront chemotherapy remained disease free at least 48 months following surgical resection, whereas none of the eight patients who received upfront chemoradiation remained disease free beyond 24 months following surgical resection. Neoadjuvant therapy with upfront chemotherapy may result in long‐term survival in a subpopulation of patients with BL‐PDAC.


Journal of Surgical Research | 2017

Emergency department utilization and predictors of mortality for inpatient inguinal hernia repairs

Ambar Mehta; Susan Hutfless; Alex B. Blair; Anirudh Dwarakanath; Chet I. Wyman; Gina Adrales; Hien Tan Nguyen

BACKGROUND Although inguinal hernias are common surgical diagnoses, minimally symptomatic patients are often not scheduled for repairs and are asked to seek medical attention if they develop symptoms. We investigated factors associated with emergency department (ED) utilization for inguinal hernia repairs and determined whether ED utilization affected mortality for this otherwise electively treated condition. METHODS We performed a retrospective analysis of the 2009-2013 Nationwide Inpatient Sample to identify patients who presented through the ED and were then admitted for unilateral inguinal hernia repairs. Multivariable logistic regressions that adjusted for several patient and hospital characteristics determined predictors of both ED admission and postoperative mortality. RESULTS There were 116,357 inpatient hospitalizations. The majority (57%) resulted from ED admissions, of which most (85%) had a diagnosis of obstruction or gangrene. Notable predictors of ED admission from the multivariable analysis included obstruction (odds ratio, 9.77 [95% confidence interval: 9.05-10.55]), gangrene (18.24 [13.00-25.59]), Black race (1.47 [1.29-1.69]), Hispanic ethnicity (1.35 [1.18-1.54]), self-pay (2.29 [1.97-2.66]) and Medicaid insurance (1.76 [1.50-2.06]). While overall mortality decreased from 2.03% in 2009 to 1.36% in 2013, admission through the ED was independently associated with higher mortality compared with elective repair (1.67 [1.21-2.29]), even after adjusting for the diagnosis of obstruction and gangrene. Other predictors of mortality included patient age and comorbidities. CONCLUSIONS In our study, Black, Hispanic, and self-pay patients were more likely to present through the ED. After adjusting for obstruction or gangrene, simply presenting through the ED was independently associated with a 67% higher postoperative mortality rate compared with that of an elective operation. Our findings suggest both a difference in ED utilization and subsequent difference in mortality by patient race and ethnicity and insurance for this common surgical condition.


Chinese clinical oncology | 2017

Rational combinations of immunotherapy for pancreatic ductal adenocarcinoma

Alex B. Blair; Lei Zheng

The complex interaction between the immune system, the tumor and the microenvironment in pancreatic ductal adenocarcinoma (PDA) leads to the resistance of PDA to immunotherapy. To overcome this resistance, combination immunotherapy is being proposed. However, rational combinations that target multiple aspects of the complex anti-tumor immune response are warranted. Novel clinical trials will investigate and optimize the combination immunotherapy for PDA.


Annals of Surgery | 2018

Is a Pathological Complete Response Following Neoadjuvant Chemoradiation Associated With Prolonged Survival in Patients With Pancreatic Cancer

Jin He; Alex B. Blair; Vincent P. Groot; Ammar A. Javed; Richard A. Burkhart; Georgios Gemenetzis; Ralph H. Hruban; Kevin M. Waters; Justin Poling; Lei Zheng; Daniel A. Laheru; Joseph M. Herman; Martin A. Makary; Matthew J. Weiss; John L. Cameron; Christopher L. Wolfgang

Objectives: To describe the survival outcome of patients with borderline resectable or locally advanced pancreatic ductal adenocarcinoma (BR/LA-PDAC) who have a pathologic complete response (pCR) following neoadjuvant chemoradiation. Background: Patients with BR/LA-PDAC are often treated with neoadjuvant chemoradiation in an attempt to downstage the tumor. Uncommonly, a pCR may result. Methods: A retrospective review of a prospectively maintained database was performed at a single institution. pCR was defined as no viable tumor identified in the pancreas or lymph nodes by pathology. A near complete response (nCR) was defined as a primary tumor less than 1 cm, without nodal metastasis. Overall survival (OS) and disease-free survival (DFS) were reported. Results: One hundred eighty-six patients with BR/LA-PDAC underwent neoadjuvant chemoradiation and subsequent pancreatectomy. Nineteen patients (10%) had a pCR, 29 (16%) had an nCR, and the remaining 138 (74%) had a limited response. Median DFS was 26 months in patients with pCR, which was superior to nCR (12 months, P = 0.019) and limited response (12 months, P < 0.001). The median OS of nCR (27 months, P = 0.003) or limited response (26 months, P = 0.001) was less than that of pCR (more than 60 months). In multivariable analyses pCR was an independent prognostic factor for DFS (HR = 0.45; 0.22–0.93, P = 0.030) and OS (HR=0.41; 0.17–0.97, P = 0.044). Neoadjuvant FOLFIRINOX (HR=0.47; 0.26–0.87, P = 0.015) and negative lymph node status (HR=0.57; 0.36–0.90, P = 0.018) were also associated with improved survival. Conclusions: Patients with BR/LA-PDAC who had a pCR after neoadjuvant chemoradiation had a significantly prolonged survival compared with those who had nCR or a limited response.


Surgery | 2018

Postoperative complications after resection of borderline resectable and locally advanced pancreatic cancer: The impact of neoadjuvant chemotherapy with conventional radiation or stereotactic body radiation therapy

Alex B. Blair; Lauren M. Rosati; Neda Rezaee; Georgios Gemenetzis; Lei Zheng; Ralph H. Hruban; John L. Cameron; Matthew J. Weiss; Christopher L. Wolfgang; Joseph M. Herman; Jin He

Background: The impact of neoadjuvant stereotactic body radiation therapy on postoperative complications for patients with borderline resectable or locally advanced pancreatic ductal adenocarcinoma remains unclear. Limited studies have compared neoadjuvant stereotactic body radiation therapy versus conventional chemoradiation therapy. A retrospective study was performed to determine if perioperative complications were different among patients with borderline resectable or locally advanced pancreatic ductal adenocarcinoma receiving neoadjuvant stereotactic body radiation therapy or chemoradiation therapy. Methods: Patients with borderline resectable or locally advanced pancreatic ductal adenocarcinoma who underwent neoadjuvant chemotherapy with stereotactic body radiation therapy or chemoradiation therapy followed by pancreatectomy at the Johns Hopkins Hospital between 2008 and 2015 were included. Predictive factors for severe complications (Clavien grade ≥ III) were assessed by univariate and multivariate analyses. Results: A total of 168 patients with borderline resectable or locally advanced pancreatic ductal adenocarcinoma underwent neoadjuvant chemotherapy and RT followed by pancreatectomy. Sixty‐one (36%) patients underwent stereotactic body radiation therapy and 107 (64%) patients received chemoradiation therapy. Compared with the chemoradiation therapy cohort, the neoadjuvant stereotactic body radiation therapy cohort was more likely to have locally advanced pancreatic ductal adenocarcinoma (62% vs 43% P = .017) and a require vascular resection (54% vs 37%, P = .027). Multiagent chemotherapy was used more commonly in the stereotactic body radiation therapy cohort (97% vs 75%, P < .001). Postoperative complications (Clavien grade ≥ III 23% vs 28%, P = .471) were similar between stereotactic body radiation therapy and chemoradiation therapy cohort. No significant difference in postoperative bleeding or infection was noted in either group. Conclusion: Compared with chemoradiation therapy, neoadjuvant stereotactic body radiation therapy appears to offer equivalent rates of perioperative complications in patients with borderline resectable or locally advanced pancreatic ductal adenocarcinoma despite a greater percentage of locally advanced disease and more complex operative treatment.


Obesity Surgery | 2017

Outcomes of Partnered Individuals Undergoing Bariatric Surgery Together: A Single Institution Case Series

Ambar Mehta; Susan Hutfless; Alex B. Blair; Megan Karcher; Stephanie Nasatka; Michael Schweitzer; Thomas H. Magnuson; Hien Tan Nguyen

Abstract There exists marked variation in weight loss among the 200,000 annual bariatric patients, and many of these patients struggle with weight regain. Several studies have suggested that positive social support may significantly impact bariatric surgery outcomes, leading to more excess weight loss and maintenance of this weight loss through appropriate lifestyle changes. We sought to understand this by assessing clinical and behavioral outcomes among married couples whereby both spouses underwent bariatric surgery at our institution. In our case series, we found evidence that married couples meet or exceed postoperative weight loss milestones at 12, 18, and 24 months and did not show signs of weight regain as a group at 18 or 24 months. Among partners who underwent the same clinical pathway at our single institution, women tended to lose more weight than men at 12 months. Additionally, while there was significant variation in postoperative follow-up among patients, we found that partners within couples typically exhibited the same behavior with respect to postoperative visits when they had their surgeries within a year of each other. This case series suggests that partnered patients undergoing bariatric surgery can meet or exceed weight loss outcomes and may practice similar follow-up adherence.


Current Problems in Cancer | 2017

Immunotherapy as a treatment for biliary tract cancers: A review of approaches with an eye to the future

Alex B. Blair; Adrian Murphy

Biliary tract cancers (BTC) are aggressive malignancies associated with resistance to chemotherapy and poor prognostic rates. Therefore, novel treatment approaches are in need. Immunotherapy represents a promising breakthrough that uses a patients immune system to target a tumor. This treatment approach has shown immense progress with positive results for selected cancers such as melanoma and nonsmall cell lung cancer. Initial preclinical data and preliminary clinical studies suggest encouraging mechanistic effects for immunotherapy in BTC offering the hope for an expanding therapeutic role for this disease. These approaches include targeted tumor antigen therapy via peptide and dendritic cell-based vaccines, allogenic cell adoptive immunotherapy, and the use of inhibitory agents targeting the immune checkpoint receptor pathway and multiple components of the tumor microenvironment. At this time demonstrating efficacy in larger clinical trials remains imperative. A multitude of ongoing trials aim to successfully translate mechanistic effects into antitumor efficacy and ultimately aim to incorporate immunotherapy into the routine management of BTC. With further research efforts, the optimization of dosing and therapeutic regimens, the identification of novel tumor antigens and a better understanding of alternative checkpoint pathway receptor expression may provide additional targets for rational combinatorial therapies which enhance the effects of immunotherapy and may offer hope for further advancing treatment options. Ultimately, the challenge remains to prospectively identify the subsets of patients with BTC who may respond to immunotherapy, and devising alternative strategies to sensitize those that do not with the hopes of improving outcomes for all with this deadly disease.


Journal of Clinical Oncology | 2016

Assessment tools for palliative care.

Sarina R. Isenberg; Rebecca A. Aslakson; Sydney M. Dy; Renee F Wilson; Julie M. Waldfogel; Allen Zhang; Alex B. Blair; Karen A. Robinson

66 Background: Recent reviews have not comprehensively addressed palliative care (PC) assessment tools. This project summarizes the extent of evidence about PC assessment tools for patients and families, and how tools have been used for clinical care, quality indicators, and evaluation of interventions. METHODS We searched MEDLINE, CINAHL, and Cochrane Database of Systematic Reviews for systematic reviews of assessment tools for PC, from January 2007 to March 2016. We searched the grey literature for domains without systematic reviews, and for domains with systematic reviews > three years old. Paired investigators independently screened search results and grey literature to determine eligibility, and assessed risk of bias of systematic reviews. The team selected the most recent and highest-quality systematic reviews for each domain. One investigator abstracted information, and a second investigator checked the information. RESULTS Using the National Consensus Project Palliative Care Guidelines domains, we included nine systematic reviews with 167 tools, and six tools from grey literature. Most tools were in physical, psychological, psychiatric, and social aspects of care, care at the end of life, and tools that cross domains (quality of life and caregiver-reported experience). Only two tools directly addressed spiritual aspects and none addressed cultural or patient-reported experience. Internal consistency reliability was evaluated for almost all tools; most reported construct validity; and few reported responsiveness (sensitivity to change). Few studies evaluated the use of assessment tools in quality indicators or clinical practice. A systematic review of 38 PC interventions and the assessment tools used found that at least 25 interventions included physical, psychosocial and psychiatric, and quality of life tools, but the tools varied extensively, and only nine included patient experience tools. CONCLUSIONS Although assessment tools exist in many PC domains, tools are needed to assess spiritual and cultural aspects of care, and patient-reported experience. Research is needed concerning: tools in clinical practice and quality of care; comparison of existing tools; and evaluation and dissemination tools with evidence of responsiveness.


Journal of The American College of Surgeons | 2018

Opioid-Prescribing Guidelines for Common Surgical Procedures: An Expert Panel Consensus

Heidi N. Overton; Marie N. Hanna; William E. Bruhn; Susan Hutfless; Mark C. Bicket; Martin A. Makary; Brian R. Matlaga; Clark Johnson; Jeanne Sheffield; Ronen Shechter; Hien Nguyen; Greg Osgood; Christi Walsh; Richard A. Burkhart; Alex B. Blair; Wes Ludwig; Suzanne Nesbit; Peiqi Wang; Suzette Morgan; Christian Jones; Lisa M. Kodadek; James Taylor; Zachary Enumah; Richard C. Gilmore; Mehran Habibi; Kayode Williams; Jon Russell; Karen Wang; Joanna W. Etra; Stephen Broderick

BACKGROUND One in 16 surgical patients prescribed opioids becomes a long-term user. Overprescribing opioids after surgery is common, and the lack of multidisciplinary procedure-specific guidelines contributes to the wide variation in opioid prescribing practices. We hypothesized that a single-institution, multidisciplinary expert panel can establish consensus on ideal opioid prescribing for select common surgical procedures. STUDY DESIGN We used a 3-step modified Delphi method involving a multidisciplinary expert panel of 6 relevant stakeholder groups (surgeons, pain specialists, outpatient surgical nurse practitioners, surgical residents, patients, and pharmacists) to develop consensus ranges for outpatient opioid prescribing at the time of discharge after 20 common procedures in 8 surgical specialties. Prescribing guidelines were developed for opioid-naïve adult patients without chronic pain undergoing uncomplicated procedures. The number of opioid tablets was defined using oxycodone 5 mg oral equivalents. RESULTS For all 20 surgical procedures reviewed, the minimum number of opioid tablets recommended by the panel was 0. Ibuprofen was recommended for all patients unless medically contraindicated. The maximum number of opioid tablets varied by procedure (median 12.5 tablets), with panel recommendations of 0 opioid tablets for 3 of 20 (15%) procedures, 1 to 15 opioid tablets for 11 of 20 (55%) procedures, and 16 to 20 tablets for 6 of 20 (30%) procedures. Overall, patients who had the procedures voted for lower opioid amounts than surgeons who performed them. CONCLUSIONS Procedure-specific prescribing recommendations may help provide guidance to clinicians who are currently overprescribing opioids after surgery. Multidisciplinary, patient-centered consensus guidelines for more procedures are feasible and may serve as a tool in combating the opioid crisis.

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Jin He

Johns Hopkins University School of Medicine

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Matthew J. Weiss

Johns Hopkins University School of Medicine

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Ammar A. Javed

Johns Hopkins University

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Georgios Gemenetzis

Johns Hopkins University School of Medicine

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Jun Yu

Johns Hopkins University School of Medicine

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Vincent P. Groot

Johns Hopkins University School of Medicine

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