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Tieppo Francio V, Alm J, Leavitt L, Mok D, Yoon BV, Nazir N, Lam C, Latif U, Sowder T, Braun E, Sack A, Khan T, Sayed D. Variables associated with nonresponders to high-frequency (10 kHz) spinal cord stimulation. Pain Pract 2024; 24:584-599. [PMID: 38078593 DOI: 10.1111/papr.13328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
INTRODUCTION The use of spinal cord stimulation (SCS) therapy to treat chronic pain continues to rise. Optimal patient selection remains one of the most important factors for SCS success. However, despite increased utilization and the existence of general indications, predicting which patients will benefit from neuromodulation remains one of the main challenges for this therapy. Therefore, this study aims to identify the variables that may correlate with nonresponders to high-frequency (10 kHz) SCS to distinguish the subset of patients less likely to benefit from this intervention. MATERIALS AND METHODS This was a retrospective single-center observational study of patients who underwent 10 kHz SCS implant. Patients were divided into nonresponders and responders groups. Demographic data and clinical outcomes were collected at baseline and statistical analysis was performed for all continuous and categorical variables between the two groups to calculate statistically significant differences. RESULTS The study population comprised of 237 patients, of which 67.51% were responders and 32.49% were nonresponders. There was a statistically significant difference of high levels of kinesiophobia, high self-perceived disability, greater pain intensity, and clinically relevant pain catastrophizing at baseline in the nonresponders compared to the responders. A few variables deemed potentially relevant, such as age, gender, history of spinal surgery, diabetes, alcohol use, tobacco use, psychiatric illness, and opioid utilization at baseline were not statistically significant. CONCLUSION Our study is the first in the neuromodulation literature to raise awareness to the association of high levels of kinesiophobia preoperatively in nonresponders to 10 kHz SCS therapy. We also found statistically significant differences with greater pain intensity, higher self-perceived disability, and clinically relevant pain catastrophizing at baseline in the nonresponders relative to responders. It may be appropriate to screen for these factors preoperatively to identify patients who are less likely to respond to SCS. If these modifiable risk factors are present, it might be prudent to consider a pre-rehabilitation program with pain neuroscience education to address these factors prior to SCS therapy, to enhance successful outcomes in neuromodulation.
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Affiliation(s)
- Vinicius Tieppo Francio
- Department of Physical Medicine and Rehabilitation, The University of Kansas Medical Center, Kansas City, Kansas, USA
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - John Alm
- Department of Physical Medicine and Rehabilitation, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Logan Leavitt
- Department of Physical Medicine and Rehabilitation, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Daniel Mok
- Department of Physical Medicine and Rehabilitation, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - B Victor Yoon
- Department of Physical Medicine and Rehabilitation, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Niaman Nazir
- Department of Population Health, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Christopher Lam
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Usman Latif
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Timothy Sowder
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Edward Braun
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Andrew Sack
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Talal Khan
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Dawood Sayed
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, Kansas, USA
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Tieppo Francio V, Leavitt L, Alm J, Mok D, Yoon BJV, Nazir N, Lam CM, Latif U, Sowder T, Braun E, Sack A, Khan TW, Sayed D. Healthcare Utilization (HCU) Reduction with High-Frequency (10 kHz) Spinal Cord Stimulation (SCS) Therapy. Healthcare (Basel) 2024; 12:745. [PMID: 38610166 PMCID: PMC11012032 DOI: 10.3390/healthcare12070745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 03/24/2024] [Accepted: 03/27/2024] [Indexed: 04/14/2024] Open
Abstract
Spinal cord stimulation (SCS) is a well-established treatment for patients with chronic pain. With increasing healthcare costs, it is important to determine the benefits of SCS in healthcare utilization (HCU). This retrospective, single-center observational study involved 160 subjects who underwent implantation of a high-frequency (10 kHz) SCS device. We focused on assessing trends in HCU by measuring opioid consumption in morphine milligram equivalents (MME), as well as monitoring emergency department (ED) and office visits for interventional pain procedures during the 12-month period preceding and following the SCS implant. Our results revealed a statistically significant reduction in HCU in all domains assessed. The mean MME was 51.05 and 26.52 pre- and post-implant, respectively. There was a 24.53 MME overall decrease and a mean of 78.2% statistically significant dose reduction (p < 0.0001). Of these, 91.5% reached a minimally clinically important difference (MCID) in opioid reduction. Similarly, we found a statistically significant (p < 0.01) decrease in ED visits, with a mean of 0.12 pre- and 0.03 post-implant, and a decrease in office visits for interventional pain procedures from a 1.39 pre- to 0.28 post-10 kHz SCS implant, representing a 1.11 statistically significant (p < 0.0001) mean reduction. Our study reports the largest cohort of real-world data published to date analyzing HCU trends with 10 kHz SCS for multiple pain etiologies. Furthermore, this is the first and only study evaluating HCU trends with 10 kHz SCS by assessing opioid use, ED visits, and outpatient visits for interventional pain procedures collectively. Preceding studies have individually investigated these outcomes, consistently yielding positive results comparable to our findings.
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Affiliation(s)
- Vinicius Tieppo Francio
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, KS 66160, USA
- Department of Physical Medicine and Rehabilitation, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Logan Leavitt
- Department of Physical Medicine and Rehabilitation, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - John Alm
- Department of Physical Medicine and Rehabilitation, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Daniel Mok
- Department of Physical Medicine and Rehabilitation, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Byung-jo Victor Yoon
- Department of Physical Medicine and Rehabilitation, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Niaman Nazir
- Department of Population Health, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Christopher M. Lam
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Usman Latif
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Timothy Sowder
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Edward Braun
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Andrew Sack
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Talal W. Khan
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Dawood Sayed
- Department of Anesthesiology and Pain Medicine, The University of Kansas Medical Center, Kansas City, KS 66160, USA
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Lam CM, Keim SA, Sayed D, Abd-Elsayed A, Gulati A, Schatman ME, Deer T, Latif U. Novel Implantation Technique for Thoracoabdominal Peripheral Nerve Stimulation via a Transversus Abdominal Plane Approach for Treatment of Chronic Abdominal Pain. J Pain Res 2024; 17:981-987. [PMID: 38500814 PMCID: PMC10946280 DOI: 10.2147/jpr.s451955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 03/07/2024] [Indexed: 03/20/2024] Open
Abstract
Background Chronic abdominal pain (CAP) is a common and challenging to treat condition with a global prevalence of up to 25%. Despite extensive evaluation, approximately 40% of patients with CAP have an unknown diagnosis. Medications may be ineffective, and surgery is rarely indicated. Interventional treatment including sympathetic blocks, sympathetic neurolysis, and transversus abdominal plane (TAP) blocks may be an option, but their efficacy can wane over time. Neuromodulation has emerged as an option for these patients, as there is evidence of success with dorsal column spinal cord and dorsal root ganglion (DRG) stimulation. Peripheral nerve stimulation (PNS) may be an alternative option, particularly in higher risk patients or in patients for whom neuraxial access may be unsafe or too technically challenging. Thoracoabdominal nerve peripheral nerve stimulation via a TAP approach may be more specifically targeted in comparison to dorsal column or DRG stimulation. In this short report, we detail a technique that the authors have successfully used for thoracoabdominal nerve PNS via a TAP approach for management of CAP. Methods This article describes a novel medial to lateral ultrasound guided thoracoabdominal nerve PNS via a TAP approach technique for lead placement and implantation. Results A medial to lateral ultrasound guided TAP approach as described to successfully implant percutaneous thoracoabdominal nerve PNS leads for management of CAP. Conclusion The thoracoabdominal nerve PNS via a TAP approach lead placement technique noted in this report has been used as a means for management of CAP utilizing peripheral neuromodulation. Here, we present a short report detailing a potential technique for PNS utilization for management of CAP. Further studies are needed to validate the safety and efficacy of this therapy modality, although the authors have found it to be a viable management option for patients with medically refractory neuropathic CAP.
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Affiliation(s)
- Christopher M Lam
- Department of Anesthesiology, Pain and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Sarah A Keim
- Department of Surgery, University of Kansas Medical Center, Kansas City, KS, USA
| | - Dawood Sayed
- Department of Anesthesiology, Pain and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS, USA
| | - Alaa Abd-Elsayed
- Department of Anesthesiology and Perioperative Medicine, University of Wisconsin, Madison, WI, USA
| | - Amitabh Gulati
- Department of Anesthesiology and Critical Care, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Michael E Schatman
- Department of Anesthesiology, Perioperative Care, and Pain Medicine, NYU Grossman School of Medicine, New York, NY, USA
- Department of Population Health – Division of Medical Ethics, NYU Grossman School of Medicine, New York, NY, USA
| | - Timothy Deer
- The Spine and Nerve Center of the Virginias, Charleston, WV, USA
| | - Usman Latif
- Department of Anesthesiology, Pain and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS, USA
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Lam CM, Sanderson M, Vu DT, Sayed D, Latif U, Chadwick AL, Staats P, York A, Smith G, Velagapudi V, Khan TW. Musculoskeletal and Neuropathic Pain in COVID-19. Diagnostics (Basel) 2024; 14:332. [PMID: 38337848 PMCID: PMC10855145 DOI: 10.3390/diagnostics14030332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/12/2024] Open
Abstract
Chronic pain constitutes a significant disease burden globally and accounts for a substantial portion of healthcare spending. The COVID-19 pandemic contributed to an increase in this burden as patients presented with musculoskeletal or neuropathic pain after contracting COVID-19 or had their chronic pain symptoms exacerbated by the virus. This extensive literature review analyzes the epidemiology of pain pre-pandemic, the costs associated with the COVID-19 pandemic, the impact of the virus on the body, mechanisms of pain, management of chronic pain post-pandemic, and potential treatment options available for people living with chronic pain who have had or are currently infected with COVID-19.
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Affiliation(s)
- Christopher M. Lam
- Department of Anesthesiology, Pain, and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; (C.M.L.); (M.S.); (D.T.V.); (D.S.); (U.L.); (A.L.C.); (A.Y.)
| | - Miles Sanderson
- Department of Anesthesiology, Pain, and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; (C.M.L.); (M.S.); (D.T.V.); (D.S.); (U.L.); (A.L.C.); (A.Y.)
| | - Dan T. Vu
- Department of Anesthesiology, Pain, and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; (C.M.L.); (M.S.); (D.T.V.); (D.S.); (U.L.); (A.L.C.); (A.Y.)
| | - Dawood Sayed
- Department of Anesthesiology, Pain, and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; (C.M.L.); (M.S.); (D.T.V.); (D.S.); (U.L.); (A.L.C.); (A.Y.)
| | - Usman Latif
- Department of Anesthesiology, Pain, and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; (C.M.L.); (M.S.); (D.T.V.); (D.S.); (U.L.); (A.L.C.); (A.Y.)
| | - Andrea L. Chadwick
- Department of Anesthesiology, Pain, and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; (C.M.L.); (M.S.); (D.T.V.); (D.S.); (U.L.); (A.L.C.); (A.Y.)
| | - Peter Staats
- National Spine and Pain Centers, Frederick, MD 21702, USA;
| | - Abigail York
- Department of Anesthesiology, Pain, and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; (C.M.L.); (M.S.); (D.T.V.); (D.S.); (U.L.); (A.L.C.); (A.Y.)
| | - Gabriella Smith
- School of Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; (G.S.); (V.V.)
| | - Vivek Velagapudi
- School of Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; (G.S.); (V.V.)
| | - Talal W. Khan
- Department of Anesthesiology, Pain, and Perioperative Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA; (C.M.L.); (M.S.); (D.T.V.); (D.S.); (U.L.); (A.L.C.); (A.Y.)
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Tariq A, Arif A, Akram M, Latif U, Nawaz MH, Andreescu S, Zhang H, Hayat A. Tailoring molecular recognition in predesigned multifunctional enzyme mimicking porphyrin imprinted interface for high affinity and differential selectivity; sensing etoposide in lung cancer patients. Biosens Bioelectron 2024; 245:115833. [PMID: 37984317 DOI: 10.1016/j.bios.2023.115833] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 11/03/2023] [Accepted: 11/09/2023] [Indexed: 11/22/2023]
Abstract
Nanozymes are cost-effective and robust but they lack specificity and selectivity, limiting their potential practical applications. Herein, molecularly imprinted polymers (MIPs) were grown in combination with multifunctional 5,10,15,20-tetrakis(4-hydroxyphenyl)-21H,23H-porphyrin (THPP) oxidase-like nanozyme to engineer THPP@MIP interface with high affinities and differential selectivity for structurally related target analytes. THPP nanozyme displayed a high level of predefined binding affinity for etoposide (ETO), and served as a predesigned functional monomer to rationally tailor the selectivity of THPP@MIP surface in the presence of different guest molecules. THPP nanozyme in combination with conventional monomers was imprinted on a portable and disposable cellulose paper matrix under UV light to create a UV-cured imprinted interface for optical detection of ETO. The THPP@MIP enzyme mimicking interface, having ETO specific and selective target recognition pockets, catalyzed the oxidation of colorless 3,3',5,5'-tetramethylbenzidine (TMB) to generate visible blue oxidized TMB (oxTMB) without exogenous hydrogen peroxide (H2O2). The ETO binding on the THPP@MIP surface blocked the channels for TMB access to THPP cavities. The THPP@MIP sensor permitted to detect ETO in the linear range of 0.005-10 μg mL-1, with a limit of detection (LoD) of 0.002 μg mL-1, and showed a remarkable specificity and selectivity against other drug molecules. Furthermore, the THPP@MIP sensor successfully differentiated the serum samples of lung cancer patients and healthy volunteers. The obtained results were validated with standard High performance liquid chromatography-mass spectrometry (HPLC/MS) analysis of the serum samples. Additionally, ETO injection/infusion solutions and ETO-free serum samples were used to perform the matrix effect and recovery studies. This work demonstrates that molecular imprinting with predesigned, enzyme mimicking, high-affinity functional monomer can serve as a highly selective and specific universal interface for broad spectrum sensing applications in various analytical domains.
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Affiliation(s)
- Aqsa Tariq
- State Key Laboratory of Biobased Material and Green Papermaking, College of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Science, PO Box 250353, Jinan, Shandong, China; Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad (CUI), Lahore, 54000, Pakistan; Department of Basic and Applied Chemistry, Faculty of Science and Technology, University of Central Punjab, Lahore, Pakistan
| | - Amina Arif
- Department of Basic and Applied Chemistry, Faculty of Science and Technology, University of Central Punjab, Lahore, Pakistan
| | - Muhammad Akram
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad (CUI), Lahore, 54000, Pakistan
| | - Usman Latif
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad (CUI), Lahore, 54000, Pakistan
| | - Mian Hasnain Nawaz
- Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad (CUI), Lahore, 54000, Pakistan
| | - Silvana Andreescu
- Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, NY, 13699-5810, USA
| | - Hongxia Zhang
- State Key Laboratory of Biobased Material and Green Papermaking, College of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Science, PO Box 250353, Jinan, Shandong, China.
| | - Akhtar Hayat
- State Key Laboratory of Biobased Material and Green Papermaking, College of Food Science and Engineering, Qilu University of Technology, Shandong Academy of Science, PO Box 250353, Jinan, Shandong, China; Interdisciplinary Research Center in Biomedical Materials (IRCBM), COMSATS University Islamabad (CUI), Lahore, 54000, Pakistan.
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Shah A, Hagedorn JM, Latif U, Bailey-Classen A, Azeem N, Beall DP, Mehta P, Stephens C, Khoo L, Deer TR. Posterior Lateral Arthrodesis as a Treatment Option for Lumbar Spinal Stenosis: Safety and Early Clinical Outcomes. J Pain Res 2024; 17:107-116. [PMID: 38196972 PMCID: PMC10775691 DOI: 10.2147/jpr.s422736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Accepted: 12/30/2023] [Indexed: 01/11/2024] Open
Abstract
Introduction Lumbar spinal stenosis (LSS) is a common condition caused by degenerative changes in the lumbar spine with age. LSS is caused by a variety of factors, including degenerative spondylosis and spondylolisthesis. People suffering with LSS experience neurogenic claudication, which causes severe physical limitations, discomfort, and a decrease in quality of life. Less invasive procedures are now being researched to improve the prognosis, success rate, and safety of LSS treatments. Posterior lateral spinal arthrodesis (PLSA) is a new surgical treatment for LSS. This study looks at the procedural and patient safety of PLSA. Materials and methods This study is a multicenter retrospective analysis of the safety of PLSA who met the clinical indications for PLSA and underwent the procedure at eight interventional spine practices. Data was collected on demographical information, pre-procedural numeric rating scale score (NRS), post-procedural NRS, and complication reporting. Patients who were included had LSS with or without spondylolisthesis and had failed conservative treatments. A descriptive statistical analysis was performed to report the outcomes. Results were reported as mean and standard deviations for continuous outcomes, and frequency (%) for categorical outcomes. Results This retrospective analysis involved 191 patients and 202 PLSA implants. The majority of patients were male Caucasians with a mean age of 69.2 years and a BMI of 31.1. A large majority of implants were placed at the L4-5 level, and the average pre-procedural NRS was 6.3 while the average post-procedural NRS was 3.1, indicating a 50.8% reduction in pain (p < 0.0001). Two patients reported complications, but they were unrelated to the device or surgical procedure; no infections, device malfunctions, or migrations were reported in the patient cohort. Conclusion Preliminary results with PLSA implants indicate that it is a safe treatment option for patients with moderate LSS who do not respond to conservative management.
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Affiliation(s)
- Anuj Shah
- Department of Physical Medicine and Rehabilitation, Detroit Medical Center, Detroit, MI, USA
| | - Jonathan M Hagedorn
- Department of Anesthesiology and Perioperative Medicine, Division of Pain Medicine, Mayo Clinic, Rochester, MN, USA
| | - Usman Latif
- Department of Anesthesiology and Pain Medicine, University of Kansas Health System, Kansas City, KS, USA
| | | | - Nomen Azeem
- Florida Spine & Pain Specialists, Riverview, FL, USA
| | | | - Pankaj Mehta
- Pain Specialists of Austin and Central Texas Pain Center, Austin, TX, USA
| | - Chad Stephens
- Noble Pain Management and Sports Medicine, Southlake, TX, USA
| | - Larry Khoo
- The Spine Clinic of Los Angeles, Los Angeles, CA, USA
| | - Timothy Ray Deer
- The Spine and Nerve Center of the Virginias, Charleston, WV, USA
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Lam CM, Keim SA, Latif U. Novel implantation technique for pudendal nerve peripheral nerve stimulation for treatment of chronic pelvic pain. Reg Anesth Pain Med 2023; 48:567-571. [PMID: 37419506 DOI: 10.1136/rapm-2023-104551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Accepted: 06/23/2023] [Indexed: 07/09/2023]
Abstract
BACKGROUND Chronic pelvic pain (CPP) is a pervasive, difficult to treat condition affecting up to 26% of the global female and 8.2% of the global male population. Considered a form of chronic regional pain syndrome (CRPS), it is medically complex and often refractory to multimodal management. Neuromodulation has become increasingly popular in treatment of chronic neuropathic pain conditions, including CPP and CRPS. Dorsal column spinal cord stimulation and dorsal root ganglion stimulation have had some success for managing CPP meanwhile peripheral nerve stimulators (PNS) have been suggested as another viable option. However, few studies in the literature have reported successful use of PNS in treatment of CPP. Here, we detail a possible technique for pudendal PNS lead placement for management of CPP. METHOD This article describes a novel cephalad to caudad fluoroscopic guided technique for pudendal nerve PNS lead placement and implantation. RESULTS A cephalad to caudal-medial fluoroscopic guided approach as described within to successfully implant a percutaneous pudendal nerve PNS for management of CPP. CONCLUSIONS The pudendal nerve PNS lead placement technique noted within can be used to avoid many of the important neurovascular structures near the pelvic outlet. Further studies are needed to validate the safety and efficacy of this therapy modality but it may be a viable management option for patients with medically refractory CPP.
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Affiliation(s)
- Christopher M Lam
- Department of Anesthesiology and Pain Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Sarah A Keim
- Department of Surgery, University of Kansas Medical Center, Kansas City, Missouri, USA
| | - Usman Latif
- Department of Anesthesiology and Pain Medicine, University of Kansas Medical Center, Kansas City, Kansas, USA
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Latif U, Seifner A, Dickert FL. Selective Detection of Erythrocytes with QCMs-ABO Blood Group Typing. Sensors (Basel) 2023; 23:7533. [PMID: 37687989 PMCID: PMC10490655 DOI: 10.3390/s23177533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 08/28/2023] [Accepted: 08/28/2023] [Indexed: 09/10/2023]
Abstract
Blood transfusion, as well as organ transplantation, is only possible after prior blood group (BG) typing and crossmatching. The most important blood group system is that of Landsteiner's ABO classification based on antigen presence on the erythrocyte surfaces. A mass sensitive QCM (quartz crystal microbalance) sensor for BG typing has been developed by utilizing molecular imprinting technology. Polyvinylpyrrolidone (crosslinked with N,N-methylenebisacrylamide) is a favorable coating that was imprinted with erythrocytes of different blood groups. In total, 10 MHz quartz sheets with two resonators, one for MIP (molecularly imprinted polymer) and the other for NIP (non-imprinted polymer) were fabricated and later used for mass-sensitive measurements. The structure of erythrocyte imprints resembles a donut, as identified by AFM (atomic force microscope). All the erythrocytes of the ABO system were chosen as templates and the responses to these selective coatings were evaluated against all blood groups. Each blood group can be characterized by the pattern of responses in an unambiguous way. The results for blood group O are remarkable given that all types of erythrocytes give nearly the same result. This can be easily understood as blood group O does not possess neither antigen A nor antigen B. The responses can be roughly related to the number of respective antigens on the erythrocyte surface. The imprints generate hollows, which are used for reversible recognition of the erythrocytes. This procedure is based on molecular recognition (based on supramolecular strategies), which results from size, shape and enthalpic interactions between host and guest molecules.
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Affiliation(s)
- Usman Latif
- Department of Analytical Chemistry, University of Vienna, Waehringer Str. 38, A-1090 Vienna, Austria; (U.L.); (A.S.)
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Lahore 54600, Pakistan
| | - Alexandra Seifner
- Department of Analytical Chemistry, University of Vienna, Waehringer Str. 38, A-1090 Vienna, Austria; (U.L.); (A.S.)
| | - Franz L. Dickert
- Department of Analytical Chemistry, University of Vienna, Waehringer Str. 38, A-1090 Vienna, Austria; (U.L.); (A.S.)
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Latif U, Hubbell PJ, Tubic G, Guerrero LA, Skaribas IM, Block JE. Minimally Invasive Postero-Inferior Sacroiliac Joint Fusion: Surgical Technique and Procedural Details. J Pers Med 2023; 13:1136. [PMID: 37511749 PMCID: PMC10381403 DOI: 10.3390/jpm13071136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/15/2023] [Accepted: 07/11/2023] [Indexed: 07/30/2023] Open
Abstract
(1) Background: Minimally invasive sacroiliac joint (SIJ) fusion is the preferred surgical intervention to treat chronically severe pain associated with SIJ degeneration and dysfunction. (2) Methods: This paper details the ten-step surgical procedure associated with the postero-inferior approach using the PsiF™ DNA Sacroiliac Joint Fusion System. (3) Results: The posterior surgical approach with an inferior operative trajectory (postero-inferior) utilizes easily identifiable landmarks to provide the safest, most direct access to the articular joint space for transfixing device placement. Implanting the device through the subchondral bone provides maximum fixation and stabilization of the joint by utilizing an optimal amount of cortical bone-implant interface. Approaching the joint from the inferior trajectory also places the implant perpendicular to the S1 endplate at a "pivot point" near the sacral axis of rotation, which addresses the most significant motion of the joint. (4) Conclusions: Further observational data from real-world clinical use are encouraged to further validate this procedure as the surgical preference for minimally invasive SIJ fusion.
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Affiliation(s)
- Usman Latif
- Department of Anesthesiology, Pain and Perioperative Medicine, The University of Kansas Hospital, 4000 Cambridge St., Kansas City, KS 66160, USA
| | - Paul J Hubbell
- Southern Pain and Neurologic, 3348 W Esplanade Ave., Ste. A, Metairie, LA 70002, USA
| | - Goran Tubic
- Chicagoland Pain Management, 420 S. Schmidt Rd., Ste. 110, Bolingbrook, IL 60440, USA
| | - Luis A Guerrero
- Central Florida Pain Relief Centers, 683 Douglas Ave., Ste. 101, Altamonte Springs, FL 32714, USA
| | | | - Jon E Block
- Independent Consultant, 2210 Jackson St., Ste. 401, San Francisco, CA 94115, USA
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Lam CM, Latif U, Sack A, Govindan S, Sanderson M, Vu DT, Smith G, Sayed D, Khan T. Advances in Spinal Cord Stimulation. Bioengineering (Basel) 2023; 10:185. [PMID: 36829678 PMCID: PMC9951889 DOI: 10.3390/bioengineering10020185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/17/2023] [Accepted: 01/30/2023] [Indexed: 02/04/2023] Open
Abstract
Neuromodulation, specifically spinal cord stimulation (SCS), has become a staple of chronic pain management for various conditions including failed back syndrome, chronic regional pain syndrome, refractory radiculopathy, and chronic post operative pain. Since its conceptualization, it has undergone several advances to increase safety and convenience for patients and implanting physicians. Current research and efforts are aimed towards novel programming modalities and modifications of existing hardware. Here we review the recent advances and future directions in spinal cord stimulation including a brief review of the history of SCS, SCS waveforms, new materials for SCS electrodes (including artificial skins, new materials, and injectable electrodes), closed loop systems, and neurorestorative devices.
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Affiliation(s)
- Christopher M. Lam
- Department of Anesthesiology and Pain Medicine, University of Kansas Health System, Kansas City, KS 66160, USA
| | - Usman Latif
- Department of Anesthesiology and Pain Medicine, University of Kansas Health System, Kansas City, KS 66160, USA
| | - Andrew Sack
- Department of Anesthesiology and Pain Medicine, University of Kansas Health System, Kansas City, KS 66160, USA
| | - Susheel Govindan
- Department of Anesthesiology and Pain Medicine, University of Kansas Health System, Kansas City, KS 66160, USA
| | - Miles Sanderson
- Department of Anesthesiology and Pain Medicine, University of Kansas Health System, Kansas City, KS 66160, USA
| | - Dan T. Vu
- Department of Anesthesiology and Pain Medicine, University of Kansas Health System, Kansas City, KS 66160, USA
| | - Gabriella Smith
- School of Medicine, University of Kansas, Kansas City, KS 66160, USA
| | - Dawood Sayed
- Department of Anesthesiology and Pain Medicine, University of Kansas Health System, Kansas City, KS 66160, USA
| | - Talal Khan
- Department of Anesthesiology and Pain Medicine, University of Kansas Health System, Kansas City, KS 66160, USA
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Gilligan C, Volschenk W, Russo M, Green M, Gilmore C, Mehta V, Deckers K, De Smedt K, Latif U, Sayed D, Georgius P, Gentile J, Mitchell B, Langhorst M, Huygen F, Baranidharan G, Patel V, Mironer E, Ross E, Carayannopoulos A, Hayek S, Gulve A, Van Buyten JP, Tohmeh A, Fischgrund J, Lad S, Ahadian F, Deer T, Klemme W, Rauck R, Rathmell J, Schwab F, Maislin G, Heemels JP, Eldabe S. Three-Year Durability of Restorative Neurostimulation Effectiveness in Patients With Chronic Low Back Pain and Multifidus Muscle Dysfunction. Neuromodulation 2023; 26:98-108. [PMID: 36175320 DOI: 10.1016/j.neurom.2022.08.457] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Revised: 08/03/2022] [Accepted: 08/22/2022] [Indexed: 01/14/2023]
Abstract
BACKGROUND Restorative neurostimulation is a rehabilitative treatment for patients with refractory chronic low back pain (CLBP) associated with dysfunction of the lumbar multifidus muscle resulting in impaired neuromuscular control. The ReActiv8-B randomized, sham-controlled trial provided evidence of the effectiveness and safety of an implanted, restorative neurostimulator. The two-year analysis previously published in this journal demonstrated accrual of clinical benefits and long-term durability. OBJECTIVE Evaluation of three-year effectiveness and safety in patients with refractory, disabling CLBP secondary to multifidus muscle dysfunction and no indications for spine surgery. MATERIALS AND METHODS Prospective, observational follow-up of the 204 implanted trial participants. Low back pain visual analog scale (VAS), Oswestry Disability Index (ODI), EuroQol quality of life survey, and opioid intake were assessed at baseline, six months, and one, two, and three years after activation. The mixed-effects model repeated measures approach was used to provide implicit imputations of missing data for continuous outcomes and multiple imputation for proportion estimates. RESULTS Data were collected from 133 participants, and 16 patients missed their three-year follow-up because of coronavirus disease restrictions but remain available for future follow-up. A total of 62% of participants had a ≥ 70% VAS reduction, and 67% reported CLBP resolution (VAS ≤ 2.5cm); 63% had a reduction in ODI of ≥ 20 points; 83% had improvements of ≥ 50% in VAS and/or ≥ 20 points in ODI, and 56% had these substantial improvements in both VAS and ODI. A total of 71% (36/51) participants on opioids at baseline had voluntarily discontinued (49%) or reduced (22%) opioid intake. The attenuation of effectiveness in the imputed (N = 204) analyses was relatively small and did not affect the statistical significance and clinical relevance of these results. The safety profile remains favorable, and no lead migrations have been observed to date. CONCLUSION At three years, 83% of participants experienced clinically substantial improvements in pain, disability, or both. The results confirm the long-term effectiveness, durability, and safety of restorative neurostimulation in patients with disabling CLBP associated with multifidus muscle dysfunction. CLINICAL TRIAL REGISTRATION The Clinicaltrials.gov registration number for the study is NCT02577354.
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Affiliation(s)
- Christopher Gilligan
- Division of Pain Medicine, Brigham and Women's Hospital Harvard Medical School, Boston, MA, USA.
| | | | - Marc Russo
- Hunter Pain Specialists, Newcastle, Australia
| | | | - Christopher Gilmore
- Center for Clinical Research, Carolinas Pain Institute, Winston-Salem, NC, USA
| | - Vivek Mehta
- Barts Neuromodulation Center, St. Bartholomew's Hospital, London, UK
| | - Kristiaan Deckers
- Department of Physical Medicine and Rehabilitation, GZA - Sint Augustinus Hospital, Wilrijk, Belgium
| | - Kris De Smedt
- Department of Neurosurgery, GZA - Sint Augustinus Hospital, Wilrijk, Belgium
| | - Usman Latif
- Department of Anesthesiology, University of Kansas School of Medicine, Kansas City, Kansas, USA
| | - Dawood Sayed
- Department of Anesthesiology, University of Kansas School of Medicine, Kansas City, Kansas, USA
| | - Peter Georgius
- Sunshine Coast Clinical Research, Noosa Heads, Australia
| | | | | | | | - Frank Huygen
- Department of Anaesthesiology Erasmus Medical Center, Rotterdam, The Netherlands
| | - Ganesan Baranidharan
- Leeds Pain and Neuromodulation Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Vikas Patel
- Department of Orthopedic Surgery, University of Colorado, Denver, CO, USA
| | - Eugene Mironer
- Carolinas Center for the Advanced Management of Pain, Spartanburg, NC, USA
| | - Edgar Ross
- Division of Pain Medicine, Brigham and Women's Hospital Harvard Medical School, Boston, MA, USA
| | - Alexios Carayannopoulos
- Departments of Physical Medicine and Rehabilitation, Rhode Island Hospital, Brown University Medical School, Providence, RI, USA
| | - Salim Hayek
- Division of Pain Medicine, University Hospitals, Cleveland Medical Center, Cleveland, OH, USA
| | - Ashish Gulve
- Department of Pain Medicine, The James Cook University Hospital, Middlesbrough, UK
| | | | | | - Jeffrey Fischgrund
- Department of Orthopedic Surgery, Oakland University, Beaumont Hospital, Royal Oak, MI, USA
| | - Shivanand Lad
- Department of Neurosurgery, Duke University Medical Center, Durham, NC, USA
| | - Farshad Ahadian
- Center for Pain Medicine, University of California, San Diego, CA, USA
| | - Timothy Deer
- The Spine and Nerve Center of the Virginias, Charleston, WV, USA
| | - William Klemme
- Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Richard Rauck
- Carolinas Pain Institute, Wake Forest University, Winston-Salem, NC, USA
| | - James Rathmell
- Division of Pain Medicine, Brigham and Women's Hospital Harvard Medical School, Boston, MA, USA
| | - Frank Schwab
- Northwell Health Orthopaedic Institute, New York, NY, USA
| | - Greg Maislin
- Biomedical Statistical Consulting, Wynnewood, PA, USA
| | | | - Sam Eldabe
- Department of Pain Medicine, The James Cook University Hospital, Middlesbrough, UK
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Gilligan C, Volschenk W, Russo M, Green M, Gilmore C, Mehta V, Deckers K, De Smedt K, Latif U, Georgius P, Gentile J, Mitchell B, Langhorst M, Huygen F, Baranidharan G, Patel V, Mironer E, Ross E, Carayannopoulos A, Hayek S, Gulve A, Van Buyten JP, Tohmeh A, Fischgrund J, Lad S, Ahadian F, Deer T, Klemme W, Rauck R, Rathmell J, Maislin G, Heemels JP, Eldabe S. Long-Term Outcomes of Restorative Neurostimulation in Patients With Refractory Chronic Low Back Pain Secondary to Multifidus Dysfunction: Two-Year Results of the ReActiv8-B Pivotal Trial. Neuromodulation 2023; 26:87-97. [PMID: 35088722 DOI: 10.1016/j.neurom.2021.10.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/22/2020] [Accepted: 10/12/2021] [Indexed: 01/11/2023]
Abstract
BACKGROUND Impaired neuromuscular control and degeneration of the multifidus muscle have been linked to the development of refractory chronic low back pain (CLBP). An implantable restorative-neurostimulator system can override the underlying multifidus inhibition by eliciting episodic, isolated contractions. The ReActiv8-B randomized, active-sham-controlled trial provided effectiveness and safety evidence for this system, and all participants received therapeutic stimulation from four months onward. OBJECTIVE This study aimed to evaluate the two-year effectiveness of this restorative neurostimulator in patients with disabling CLBP secondary to multifidus muscle dysfunction and no indications for spine surgery. MATERIALS AND METHODS Open-label follow-up of 204 participants implanted with a restorative neurostimulation system (ReActiv8, Mainstay Medical, Dublin, Ireland) was performed. Pain intensity (visual analog scale [VAS]), disability (Oswestry disability index [ODI]), quality-of-life (EQ-5D-5L), and opioid intake were assessed at baseline, six months, one year, and two years after activation. RESULTS At two years (n = 156), the proportion of participants with ≥50% CLBP relief was 71%, and 65% reported CLBP resolution (VAS ≤ 2.5 cm); 61% had a reduction in ODI of ≥20 points, 76% had improvements of ≥50% in VAS and/or ≥20 points in ODI, and 56% had these substantial improvements in both VAS and ODI. A total of 87% of participants had continued device use during the second year for a median of 43% of the maximum duration, and 60% (34 of 57) had voluntarily discontinued (39%) or reduced (21%) opioid intake. CONCLUSIONS At two years, 76% of participants experienced substantial, clinically meaningful improvements in pain, disability, or both. These results provide evidence of long-term effectiveness and durability of restorative neurostimulation in patients with disabling CLBP, secondary to multifidus muscle dysfunction. CLINICAL TRIAL REGISTRATION The study is registered on clinicaltrials.gov with identifier NCT02577354.
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Affiliation(s)
- Christopher Gilligan
- Division of Pain Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital Harvard Medical School, Boston, MA, USA.
| | | | - Marc Russo
- Hunter Pain Specialists, Newcastle, Australia
| | | | - Christopher Gilmore
- Center for Clinical Research, Carolinas Pain Institute, Winston-Salem, NC, USA
| | - Vivek Mehta
- Barts Neuromodulation Centre, St. Bartholomew's Hospital, London, UK
| | - Kristiaan Deckers
- Department of Physical Medicine and Rehabilitation, GZA - Sint Augustinus Hospital, Wilrijk, Belgium
| | - Kris De Smedt
- Department of Neurosurgery, GZA - Sint Augustinus Hospital, Wilrijk, Belgium
| | - Usman Latif
- Department of Anesthesiology, University of Kansas School of Medicine, Kansas City, KS, USA
| | - Peter Georgius
- Sunshine Coast Clinical Research, Noosa Heads, Australia
| | | | | | | | - Frank Huygen
- Department of Anaesthesiology, Erasmus Medical Center, Rotterdam, The Netherlands
| | - Ganesan Baranidharan
- Leeds Pain and Neuromodulation Centre, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Vikas Patel
- Department of Orthopedic Surgery, University of Colorado, Denver, CO, USA
| | - Eugene Mironer
- Carolinas Center for the Advanced Management of Pain, Spartanburg, NC, USA
| | - Edgar Ross
- Division of Pain Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital Harvard Medical School, Boston, MA, USA
| | - Alexios Carayannopoulos
- Department of Physical Medicine and Rehabilitation, Rhode Island Hospital, Brown University Medical School, Providence, RI, USA
| | - Salim Hayek
- Division of Pain Medicine, University Hospitals, Cleveland Medical Center, Cleveland, OH, USA
| | - Ashish Gulve
- Department of Pain Medicine, The James Cook University Hospital, Middlesbrough, UK
| | | | | | - Jeffrey Fischgrund
- Department of Orthopedic Surgery, Oakland University, Beaumont Hospital, Royal Oak, MI, USA
| | - Shivanand Lad
- Department of Neurosurgery, Duke University Medical Center, Durham, NC, USA
| | - Farshad Ahadian
- Center for Pain Medicine, University of California, San Diego, CA, USA
| | - Timothy Deer
- The Spine and Nerve Center of the Virginias, Charleston, WV, USA
| | - William Klemme
- Uniformed Services University of the Health Sciences, Bethesda, MD, USA
| | - Richard Rauck
- Carolinas Pain Institute, Wake Forest University, Winston-Salem, NC, USA
| | - James Rathmell
- Division of Pain Medicine, Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women's Hospital Harvard Medical School, Boston, MA, USA
| | - Greg Maislin
- Biomedical Statistical Consulting, Wynnewood, PA, USA
| | | | - Sam Eldabe
- Department of Pain Medicine, The James Cook University Hospital, Middlesbrough, UK
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Braun E, Khatri N, Kim B, Nazir N, Orr WN, Ballew A, Latif U, Sack A, Sowder T, Canova K, Clark S, Grace P, Khan TW. A Prospective, Randomized Single-Blind Crossover Study Comparing High-Frequency 10,000 Hz and Burst Spinal Cord Stimulation. Neuromodulation 2022:S1094-7159(22)01352-6. [DOI: 10.1016/j.neurom.2022.10.054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 10/06/2022] [Accepted: 10/23/2022] [Indexed: 12/12/2022]
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Latif U, Fatima SA, Daniyal H, Zulfiqar S, Salman CM, Yasir M. Emotional and Therapeutic Elements of Cigarette Smoking Control: A Cross Sectional Study. JPRI 2022. [DOI: 10.9734/jpri/2022/v34i40b36259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Aim: The aim of this study was to investigate the impact of services rendered by health professionals in reducing cigarette smoking at the smoking cessation centers.
Methods: Through May 2020 and April 2021, data from hospitals connected with the University of Health Sciences, Lahore, have been collected. During the same time period, information from DHQ and Allied Hospitals Faisalabad were evaluated using a recent retrospective review. Statistical software was used to calculate the incidence and average values. Chi-square also student t tests remained utilized to evaluate associated variables; p 0.06 remained measured statistically.
Results: The average age of entrance was 39.73 13.21 years (min 14; max 92). Women were older than males at time of admission, although men began smoking earlier. Individuals with fewer than a high school diploma began smoking at a younger age. Once cured through medication also behavioral treatment, the smoking cessation rate remained 38.4 percent (n = 218).
Conclusion: Approximately 49 percent of smokers stopped smoking after receiving medication and behavioral counseling. The majority of smokers was between ages of 31 and 51. More smoking cessation clinics should be built to provide smoking cessation tools to more informed individuals.
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Alsaiari M, Saleem A, Alsaiari R, Muhammad N, Latif U, Tariq M, Almohana A, Rahim A. SiO 2/Al 2O 3/C grafted 3-n propylpyridinium silsesquioxane chloride-based non-enzymatic electrochemical sensor for determination of carcinogenic nitrite in food products. Food Chem 2022; 369:130970. [PMID: 34500207 DOI: 10.1016/j.foodchem.2021.130970] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 08/02/2021] [Accepted: 08/25/2021] [Indexed: 12/19/2022]
Abstract
The excessive uptake of nitrite is perilous and detrimental for human health that prone to cancer disease. Herein, described the synthesis of SiO2/Al2O3/C material through the sol-gel procedure followed by grafting with 3-n propylpyridinium silsesquioxane chloride organic ligand for enhancing electrochemical activity. H-NMR, 13C NMR, and 29Si studies were performed for confirmation of surface functionalization through the grafting technique. The surface morphology was evaluated through SEM and TEM techniques. The material showed an irregular and flakes-like structure that exhibited more compactness and conglomerate structure with no segregation in phase was observed after grafting. The elemental composition was confirmed from EDX analysis. The electrochemical measurements were performed with cyclic voltammetry, electrochemical impedance spectroscopy (EIS), and chronoamperometry. The prepared hybrid inorganic-organic composite Si/C/Al/SiPy+Cl- was applied for the modification of the glassy carbon (GC) electrode and assessed as a sensor for nitrite determination. The sensor showed the low limit of detection (0.01 μM), low limit of quantification (0.08 μM), wide linear response range (0.2-280 μM), and high sensitivity (410 μA·μM-1). It gave a quick response time of <1 s in the presence of 70 μM nitrite. The fabricated sensor showed high sensitivity, chemical stability, and insignificant interference from co-existing species present in sausage meat and food industry discharges. The repeatability of the sensor was evaluated as 2.5 % R.S.D.; for n = 10 at 50 μM nitrite.
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Affiliation(s)
- Mabkhoot Alsaiari
- Promising Centre for sensors and electronic devices (PCSED), Advanced materials and Nano Research Centre, Najran University, Najran, 11001, Saudi Arabia; Empty Quarter Research Unit, Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Najran, Saudi Arabia.
| | - Amina Saleem
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road Lahore, 54000, Pakistan
| | - Raiedhah Alsaiari
- Promising Centre for sensors and electronic devices (PCSED), Advanced materials and Nano Research Centre, Najran University, Najran, 11001, Saudi Arabia; Empty Quarter Research Unit, Department of Chemistry, Faculty of Science and Arts at Sharurah, Najran University, Najran, Saudi Arabia
| | - Nawshad Muhammad
- Department of Dental Materials, Institute of Basic Medical Sciences, Khyber Medical University KPK, Pakistan
| | - Usman Latif
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road Lahore, 54000, Pakistan
| | - Muhammad Tariq
- National Centre of Excellence in Physical Chemistry, University of Peshawar, Pakistan
| | - Abdulaziz Almohana
- Department of Civil Engineering, College of Engineering, King Saud University, P.O.BOX 800, Riyadh, 11421, Saudi Arabia
| | - Abdur Rahim
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, Defence Road, Off Raiwind Road Lahore, 54000, Pakistan.
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Nizamuddin SL, Patel S, Nizamuddin J, Latif U, Mee Lee S, Tung A, Dalton A, Klafta JM, O’Connor M, Shahul SS. Anesthesiology Residency Recruitment: A Prospective Study Comparing In-Person and Virtual Interviews. J Educ Perioper Med 2022; 24:E681. [PMID: 35707013 PMCID: PMC9176398 DOI: 10.46374/volxxiv_issue1_nizamuddin] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
BACKGROUND Residency recruitment requires significant resources for both applicants and residency programs. Virtual interviews offer a way to reduce the time and costs required during the residency interview process. This prospective study investigated how virtual interviews affected scoring of anesthesiology residency applicants and whether this effect differed from in-person interview historical controls. METHODS Between November 2020 and January 2021, recruitment members at the University of Chicago scored applicants before their interview based upon written application materials alone (preinterview score). Applicants received a second score after their virtual interview (postinterview score). Recruitment members were queried regarding the most important factor affecting the preinterview score as well as the effect of certain specified applicant interview characteristics on the postinterview score. Previously published historical controls were used for comparison to in-person recruitment the year prior from the same institution. RESULTS Eight hundred and sixteen virtual interviews involving 272 applicants and 19 faculty members were conducted. The postinterview score was higher than the preinterview score (4.06 versus 3.98, P value of <.0001). The change in scores after virtual interviews did not differ from that after in-person interviews conducted the previous year (P = .378). The effect of each characteristic on score change due to the interview did not differ between in-person and virtual interviews (all P values >.05). The factor identified by faculty as the most important in the preinterview score was academic achievements (64%), and faculty identified the most important interview characteristic to be personality (72%). CONCLUSIONS Virtual interviews led to a significant change in scoring of residency applicants, and the magnitude of this change was similar compared with in-person interviews. Further studies should elaborate on the effect of virtual recruitment on residency programs and applicants.
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Affiliation(s)
- Sarah L. Nizamuddin
- Sarah L. Nizamuddin is an Assistant Professor, Shiragi Patel is a Resident Physician, Junaid Nizamuddin is an Assistant Professor, Avery Tung is a Professor, Allison Dalton is an Associate Professor, Jerome M. Klafta is a Professor, Michael O’Connor is a Professor, Sajid S. Shahul is a Professor in the Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL
| | - Shiragi Patel
- Sarah L. Nizamuddin is an Assistant Professor, Shiragi Patel is a Resident Physician, Junaid Nizamuddin is an Assistant Professor, Avery Tung is a Professor, Allison Dalton is an Associate Professor, Jerome M. Klafta is a Professor, Michael O’Connor is a Professor, Sajid S. Shahul is a Professor in the Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL
| | - Junaid Nizamuddin
- Sarah L. Nizamuddin is an Assistant Professor, Shiragi Patel is a Resident Physician, Junaid Nizamuddin is an Assistant Professor, Avery Tung is a Professor, Allison Dalton is an Associate Professor, Jerome M. Klafta is a Professor, Michael O’Connor is a Professor, Sajid S. Shahul is a Professor in the Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL
| | - Usman Latif
- Usman Latif is an Associate Professor in the Department of Anesthesiology at the University of Kansas, Kansas City, KS
| | - Sang Mee Lee
- Sang Mee Lee is an Assistant Professor in the Department of Public Health Sciences, Biological Sciences Division, at the University of Chicago, Chicago, IL
| | - Avery Tung
- Sarah L. Nizamuddin is an Assistant Professor, Shiragi Patel is a Resident Physician, Junaid Nizamuddin is an Assistant Professor, Avery Tung is a Professor, Allison Dalton is an Associate Professor, Jerome M. Klafta is a Professor, Michael O’Connor is a Professor, Sajid S. Shahul is a Professor in the Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL
| | - Allison Dalton
- Sarah L. Nizamuddin is an Assistant Professor, Shiragi Patel is a Resident Physician, Junaid Nizamuddin is an Assistant Professor, Avery Tung is a Professor, Allison Dalton is an Associate Professor, Jerome M. Klafta is a Professor, Michael O’Connor is a Professor, Sajid S. Shahul is a Professor in the Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL
| | - Jerome M. Klafta
- Sarah L. Nizamuddin is an Assistant Professor, Shiragi Patel is a Resident Physician, Junaid Nizamuddin is an Assistant Professor, Avery Tung is a Professor, Allison Dalton is an Associate Professor, Jerome M. Klafta is a Professor, Michael O’Connor is a Professor, Sajid S. Shahul is a Professor in the Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL
| | - Michael O’Connor
- Sarah L. Nizamuddin is an Assistant Professor, Shiragi Patel is a Resident Physician, Junaid Nizamuddin is an Assistant Professor, Avery Tung is a Professor, Allison Dalton is an Associate Professor, Jerome M. Klafta is a Professor, Michael O’Connor is a Professor, Sajid S. Shahul is a Professor in the Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL
| | - Sajid S. Shahul
- Sarah L. Nizamuddin is an Assistant Professor, Shiragi Patel is a Resident Physician, Junaid Nizamuddin is an Assistant Professor, Avery Tung is a Professor, Allison Dalton is an Associate Professor, Jerome M. Klafta is a Professor, Michael O’Connor is a Professor, Sajid S. Shahul is a Professor in the Department of Anesthesia and Critical Care, University of Chicago, Chicago, IL
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Amara U, Mahmood K, Hassan M, Hanif M, Khalid M, Usman M, Shafiq Z, Latif U, Ahmed MM, Hayat A, Nawaz MH. Functionalized thiazolidone-decorated lanthanum-doped copper oxide: novel heterocyclic sea sponge morphology for the efficient detection of dopamine. RSC Adv 2022; 12:14439-14449. [PMID: 35702245 PMCID: PMC9096811 DOI: 10.1039/d2ra01406h] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Accepted: 04/24/2022] [Indexed: 01/10/2023] Open
Abstract
Herein, we synthesized lanthanum (La)-doped sea sponge-shaped copper oxide (CuO) nanoparticles and wrapped them with novel O-, N- and S-rich (2Z,5Z)-3-acetyl-2-((3,4-dimethylphenyl)imino)-5-(2-oxoindolin-3-ylidene)thiazolidin-4-one (La@CuO-DMT). The shape and composition of the designed materials were confirmed by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), and Raman spectroscopy. The graphitic pencil electrode (GPE) fabricated using La@CuO-DMT showed excellent sensing efficacy against dopamine (DA) with good selectivity, reproducibility and ideal stability. The unique morphology and massive surface defects by La@CuO offer good accessibility to DA and enhance smooth and robust channeling of electrons at the electrode–electrolyte interface. Consequently, these properties resulted in improved reaction kinetics and robust DA oxidation with an amplified faradaic response. Meanwhile, O-, N-, and S-enriched carbon support, i.e. DMT, inhibited the leaching of electrode matrixes, resulting in a superior detection limit of 423 nm and an improved sensitivity of 13.9 μA μM−1 cm−2 in the linear range of 10 μM to 1500 μM. Additionally, the developed sensing interface was successfully employed to analyze DA from tear samples with excellent percentage recoveries. We expect that such engineered morphology-based nanoparticles with a O-, N-, and S-rich C support will facilitate the development of DA sensors for in vitro screening of rarely studied tear samples with good sensitivity and selectivity. Sea sponge-shaped La@CuO-decorated O-, N-, and S-rich DMT-wrapped GPE for DA detection.![]()
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Affiliation(s)
- Umay Amara
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Khalid Mahmood
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Maria Hassan
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Muhammad Hanif
- Department of Pharmaceutics, Faculty of Pharmacy, Bahauddin Zakariya University, Multan, 608000, Pakistan
| | - Muhammad Khalid
- Department of Chemistry, Khwaja Fareed University of Engineering & Information Technology, Rahim Yar Khan, 64200, Pakistan
| | - Muhammad Usman
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, Qingdao University, 308 Ningxia Road, Qingdao, Shangdong 266071, China
| | - Zahid Shafiq
- Institute of Chemical Sciences, Bahauddin Zakariya University, Multan 60800, Pakistan
| | - Usman Latif
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | | | - Akhtar Hayat
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
| | - Mian Hasnain Nawaz
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM), COMSATS University Islamabad, Lahore Campus, 54000, Pakistan
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Gilligan C, Volschenk W, Russo M, Green M, Gilmore C, Mehta V, Deckers K, De Smedt K, Latif U, Georgius P, Gentile J, Mitchell B, Langhorst M, Huygen F, Baranidharan G, Patel V, Mironer E, Ross E, Carayannopoulos A, Hayek S, Gulve A, Van Buyten JP, Tohmeh A, Fischgrund J, Lad S, Ahadian F, Deer T, Klemme W, Rauck R, Rathmell J, Levy R, Heemels JP, Eldabe S. An implantable restorative-neurostimulator for refractory mechanical chronic low back pain: a randomized sham-controlled clinical trial. Pain 2021; 162:2486-2498. [PMID: 34534176 PMCID: PMC8442741 DOI: 10.1097/j.pain.0000000000002258] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 12/19/2022]
Abstract
ABSTRACT Chronic low back pain can be caused by impaired control and degeneration of the multifidus muscles and consequent functional instability of the lumbar spine. Available treatment options have limited effectiveness and prognosis is unfavorable. We conducted an international randomized, double-blind, sham-controlled trial at 26 multidisciplinary centers to determine safety and efficacy of an implantable, restorative neurostimulator designed to restore multifidus neuromuscular control and facilitate relief of symptoms (clinicaltrials.gov identifier: NCT02577354). Two hundred four eligible participants with refractory mechanical (musculoskeletal) chronic LBP and a positive prone instability test indicating impaired multifidus control were implanted and randomized to therapeutic (N = 102) or low-level sham (N = 102) stimulation of the medial branch of the dorsal ramus nerve (multifidus nerve supply) for 30 minutes twice daily. The primary endpoint was the comparison of responder proportions (≥30% relief on the LBP visual analogue scale without analgesics increase) at 120 days. After the primary endpoint assessment, participants in the sham-control group switched to therapeutic stimulation and the combined cohort was assessed through 1 year for long-term outcomes and adverse events. The primary endpoint was inconclusive in terms of treatment superiority (57.1% vs 46.6%; difference: 10.4%; 95% confidence interval, -3.3% to 24.1%, P = 0.138). Prespecified secondary outcomes and analyses were consistent with a modest but clinically meaningful treatment benefit at 120 days. Improvements from baseline, which continued to accrue in all outcome measures after conclusion of the double-blind phase, were clinically important at 1 year. The incidence of serious procedure- or device-related adverse events (3.9%) compared favorably with other neuromodulation therapies for chronic pain.
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Affiliation(s)
- Christopher Gilligan
- Division of Pain Medicine, Brigham and Women's Hospital Harvard Medical School, Boston, MA, United States
| | | | - Marc Russo
- Hunter Pain Specialists, Newcastle, Australia
| | | | - Christopher Gilmore
- Center for Clinical Research, Carolinas Pain Institute, Winston-Salem, NC, United States
| | - Vivek Mehta
- Barts Neuromodulation Centre, St. Bartholomew's Hospital, London, United Kingdom
| | - Kristiaan Deckers
- Department of Physical Medicine and Rehabilitation, GZA - Sint Augustinus Hospital, Wilrijk, Belgium
| | - Kris De Smedt
- Department of Neurosurgery, GZA - Sint Augustinus Hospital, Wilrijk, Belgium
| | - Usman Latif
- Department of Anesthesiology, University of Kansas School of Medicine, Kansas City, KS, United States
| | - Peter Georgius
- Sunshine Coast Clinical Research, Noosa Heads, Australia
| | | | | | | | - Frank Huygen
- Department of Anaesthesiology Erasmus Medical Center, Rotterdam, the Netherlands
| | - Ganesan Baranidharan
- Leeds Pain and Neuromodulation Centre,Leeds Teaching Hopsitals NHS Trust, Leeds, United Kingdom
| | - Vikas Patel
- Department of Orthopedic Surgery, University of Colorado, Denver, CO, United States
| | - Eugene Mironer
- Carolinas Center for the Advanced Management of Pain, Spartanburg, NC, United States
| | - Edgar Ross
- Division of Pain Medicine, Brigham and Women's Hospital Harvard Medical School, Boston, MA, United States
| | - Alexios Carayannopoulos
- Departments of Physical Medicine and Rehabilitation, Rhode Island Hospital, Brown University Medical School, Providence, RI, United States
| | - Salim Hayek
- Division of Pain Medicine, University Hospitals, Cleveland Medical Center, Cleveland, OH, United States
| | - Ashish Gulve
- Department of Pain Medicine, The James Cook University Hospital, Middlesbrough, United Kingdom
| | | | - Antoine Tohmeh
- Multicare Neuroscience Institute, Spokane, WA, United States
| | - Jeffrey Fischgrund
- Department of Orthopedic Surgery, Oakland University, Beaumont Hospital, Royal Oak, MI, United States
| | - Shivanand Lad
- Department of Neurosurgery, Duke University Medical Center, Durham, NC, United States
| | - Farshad Ahadian
- Center for Pain Medicine, University of California, San Diego, CA, United States
| | - Timothy Deer
- The Spine and Nerve Center of the Virginias, Charleston, WV, United States
| | - William Klemme
- Uniformed Services University of the Health Sciences, Bethesda, MD, United States
| | - Richard Rauck
- Carolinas Pain Institute, Wake Forest University, Winston-Salem, NC, United States
| | - James Rathmell
- Division of Pain Medicine, Brigham and Women's Hospital Harvard Medical School, Boston, MA, United States
| | - Robert Levy
- Anesthesia Pain Care Consultant, Tamarac, FL, United States
| | | | - Sam Eldabe
- Department of Pain Medicine, The James Cook University Hospital, Middlesbrough, United Kingdom
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Latif U, Concannon T, Frazier A. Postoperative care. Sacroiliac Joint Pain 2021:235-242. [DOI: 10.1093/med/9780197607947.003.0021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
This chapter discusses postoperative recommendations, including ambulation, wound care, antibiotic guidelines, and follow-up interval, for patients who have undergone open surgical SIJ fusion versus minimally invasive (MIS) SIJ fusion. Postoperative care varies widely based on the surgical approach. In particular, patients undergoing MIS are less likely to be admitted, ambulate sooner, have a shorter period of less stringent restrictions, and have faster wound healing with fewer complications. These benefits are due to a variety of factors including shorter incision length, less tissue disruption, decreased operating time, and less blood loss. This benefit is most pronounced with approaches that do not involve the use of hardware. Patients undergoing open surgery typically progress through a 4- to 5-month phased plan of progressive physical therapy. In contrast, patients undergoing MIS, particularly percutaneous SIJ fusion with bone allograft, are able to ambulate immediately and have a short period of mild restrictions followed by return to normal activity. The advent of new surgical techniques and less invasive solutions for SIJ fusion is leading the way to an easier postoperative recovery period for patients.
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Nizamuddin SL, Nizamuddin J, Latif U, Lee SM, Tung A, Dalton A, Klafta JM, O’Connor M, Shahul SS. The Influence of the In-person Residency Interview: A Prospective Study. J Educ Perioper Med 2021; 23:E676. [PMID: 34966829 PMCID: PMC8691172 DOI: 10.46374/volxxiii_issue4_nizamuddin] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
BACKGROUND This prospective study investigated whether in-person interviews affected interviewer assessments of anesthesiology residency applicants at an academic medical center, and which applicant characteristics influenced interview performance. METHODS Eighteen faculty members involved in residency recruitment between November 2019 and January 2020 documented preinterview (after full application review) and postinterview scores of the applicants on a scale of 1 to 5. Faculty also reported the relative contributions of specific interview characteristics (personality, physical appearance, professional demeanor, discussion regarding academic/scholarly activity, and level of interest in the specialty) to their postinterview assessments. Mixed-effects models were used to assess whether interviews changed faculty assessment of applicants, and what the relative contributions of applicant characteristics were to faculty assessments. RESULTS A total of 696 interviews were conducted with 232 applicants. The postinterview scores differed significantly from the preinterview scores (estimated mean difference, 0.09 ± 0.02; P < 0.0001). The characteristics most affecting postinterview scores were positive impressions of applicants' personalities (marginal mean change in postinterview score, 0.259; 95% confidence interval, 0.221-0.297) and negative impressions of applicants' professional demeanor (marginal mean change, -0.257; 95% confidence interval, -0.350 to -0.164). CONCLUSIONS In-person interviews significantly affected residency applicants' scores. Personality and professional demeanor influenced scores more than did other characteristics examined. Further studies are needed to clarify the relevance of in-person interviews to the assessment of residency applicants.
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21
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Murphy MT, Latif U. Pain During COVID-19: A Comprehensive Review and Guide for the Interventionalist. Pain Pract 2020; 21:132-143. [PMID: 33295042 DOI: 10.1111/papr.12976] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 10/08/2020] [Indexed: 12/23/2022]
Abstract
BACKGROUND Chronic pain, the leading cause of disability in the world, imposes limitations on activities of daily living and diminishes quality of life leading to unnecessary patient suffering. The personal and socioeconomic costs of chronic pain cannot be overstated. Physicians are at the crux of the pandemic and must attempt to limit the spread of the virus while maintaining their professional responsibility to their patients and staff members. OBJECTIVE The aim of this review is to analyze the existing literature to develop consensus recommendations for treating pain during the current COVID-19 pandemic. METHODS Relevant literature was located via computer-generated citations between the months of March and May of 2020. Online computer searches of multiple databases including Google Scholar, CINAHL, PubMed, and Cochrane Review were conducted in conjunction with a thorough review of local, state, national, and international governmental and organizational websites to locate research on the area of interest. RESULTS The guidelines in this review are meant to offer a framework to pain practitioners and organizations for providing highly effective, ethical, and safe care to patients while maintaining their commitment to mitigating the spread of the COVID-19 pandemic. Specific areas addressed include general and interventional-specific treatment and mitigation recommendations. CONCLUSIONS We believe that the recommendations in this review, if used in conjunction with evolving recommendations of Centers for Disease Control and Prevention (CDC), World Health Organization (WHO), and federal, state, and local governing bodies, provides a path to not only mitigate the spread of the pandemic but also limit the adverse impact of pain and suffering in chronic pain patients.
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Affiliation(s)
- Micheal T Murphy
- Department of Physical Medicine and Rehabilitation, University of Kansas Medical Center, Kansas City, Kansas, U.S.A
| | - Usman Latif
- Department of Anesthesiology, University of Kansas Medical Center, Kansas City, Kansas, U.S.A
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22
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Nizamuddin SL, Gupta A, Latif U, Nizamuddin J, Tung A, Minhaj MM, Apfelbaum J, Shahul SS. A Predictive Model for Pediatric Postoperative Respiratory Failure: A National Inpatient Sample Study. J Intensive Care Med 2020; 36:798-807. [PMID: 32489132 DOI: 10.1177/0885066620928272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
STUDY OBJECTIVE To identify risk factors for pediatric postoperative respiratory failure and develop a predictive model. DESIGN This retrospective case-control study utilized the US National Inpatient Sample (NIS) from 2012 to 2014. Significant predictors were selected, and the predicted probability of pediatric postoperative respiratory failure was calculated. Sensitivity, specificity, and accuracy were then calculated, and receiver-operator curves were drawn. SETTING National Inpatient Sample data sets from years 2012, 2013, and 2014 were used. PATIENTS Patients aged 17 and younger in the 2012, 2013, and 2014 NIS data sets. INTERVENTIONS Candidate predictors included demographic variables, type of surgical procedure, a modified pediatric comorbidity score, presence of substance abuse diagnosis, and presence/absence of kyphoscoliosis. MEASUREMENTS The primary outcome measure was the pediatric quality indicator (PDI 09), which is defined by the Agency for Healthcare Research Quality, and identifies pediatric patients with postoperative respiratory failure. MAIN RESULTS The incidence of pediatric postoperative respiratory failure in each year's data set varied from 1.31% in 2012 to 1.41% in 2014. Significant risk factors for the development of postoperative respiratory failure included abdominal surgery ([OR] = 1.92 in 2012 data set, 1.79 in 2013 data set), spine surgery (OR = 7.10 in 2012 data set, 6.41 in 2013 data set), and an elevated pediatric comorbidity score (score of 3 or greater: OR = 32.58 in 2012 data set, 22.74 in 2013 data set). A predictive model utilizing these risk factors achieved a C statistic of 0.82. CONCLUSIONS Risk factors associated with postoperative respiratory failure in pediatric patients undergoing noncardiac surgery include type of surgery (abdominal and spine) and higher pediatric comorbidity scores. A prediction model based on the identified factors had good predictive ability.
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Affiliation(s)
- Sarah L Nizamuddin
- Department of Anesthesia and Critical Care, 2462University of Chicago, Chicago, IL, USA
| | - Atul Gupta
- Department of Anesthesia and Critical Care, 2462University of Chicago, Chicago, IL, USA
| | - Usman Latif
- Department of Anesthesiology, University of Kansas, Kansas City, KS, USA
| | - Junaid Nizamuddin
- Department of Anesthesia and Critical Care, 2462University of Chicago, Chicago, IL, USA
| | - Avery Tung
- Department of Anesthesia and Critical Care, 2462University of Chicago, Chicago, IL, USA
| | - Mohammed M Minhaj
- Department of Anesthesia and Critical Care, 2462University of Chicago, Chicago, IL, USA
| | - Jeffrey Apfelbaum
- Department of Anesthesia and Critical Care, 2462University of Chicago, Chicago, IL, USA
| | - Sajid S Shahul
- Department of Anesthesia and Critical Care, 2462University of Chicago, Chicago, IL, USA
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Mujahid A, Maryam A, Afzal A, Zafar Bajwa S, Hussain T, Imran Din M, Latif U, Irshad M. Molecularly imprinted poly(methyl methacrylate)-nickel sulfide hybrid membranes for adsorptive desulfurization of dibenzothiophene. Sep Purif Technol 2020. [DOI: 10.1016/j.seppur.2019.116453] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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24
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Nizamuddin SL, Nizamuddin J, Latif U, Tung A, Klafta JM, Lee SM, Ku CM, Stahl DL, Lee J, Shahul SS. Be Active and Be Well? A Cross-sectional Survey of US Anesthesia Residents. J Educ Perioper Med 2020; 22:E640. [PMID: 32939368 PMCID: PMC7485433 DOI: 10.46374/volxxii-issue2-nizamuddin] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
BACKGROUND Wellness among resident physicians is important to their well-being and ability to provide clinical care. The relationship between physical activity and wellness among anesthesia residents has not yet been evaluated. We surveyed anesthesia residents to evaluate their levels of physical activity and self-perceived wellness scores. We hypothesized that residents with high self-reported physical activity levels would be more likely to have higher wellness scores. METHODS Three hundred and twenty-three anesthesia residents were invited to participate in this cross-sectional survey study. The survey included questions regarding demographics (age, gender, clinical anesthesia year, work hours), physical activity (based off the US Department of Health and Human Services [USDHHS] guidelines), and wellness (using the Satisfaction With Life Scale). The relationship between wellness and physical activity levels was evaluated. RESULTS One hundred forty-one residents responded (43.6% response rate). Thirty-eight (27.1%) residents met our activity threshold for physically active. Eighty-six respondents (61.4%) were classified as having high wellness based on their survey answers. No significant associations were found between demographic data and wellness, including age or clinical anesthesia training year. Among those residents who described physical activity consistent with USDHHS guidelines, 29 (76.3%) had high wellness scores. After logistic regression analysis, residents who achieved the physical activity guidelines were more likely to have high wellness scores (odds ratio 2.54, 95% confidence interval 1.13-6.20, P value .03). CONCLUSIONS Anesthesia resident physicians with high physical activity levels had higher self-perceived wellness scores.
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Prohira S, de Vries K, Besson D, Connolly A, Hast C, Latif U, Meures T, Nozdrina A, Ralston J, Riesen Z, Saltzberg D, Torres J, Wissel S, Zuo X. Suggestion of coherent radio reflections from an electron-beam induced particle cascade. Int J Clin Exp Med 2019. [DOI: 10.1103/physrevd.100.072003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Latif U, Masear CG, Schwengel DA. Assessing the Efficacy of an Online Preoperative Evaluation Course for PGY-1 Anesthesiology Residents. J Educ Perioper Med 2019; 21:E620. [PMID: 31988981 PMCID: PMC6972970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
BACKGROUND The impact of an online postgraduate year (PGY-1) education program on anesthesiology resident knowledge base, anxiety, or preparedness has not been described previously. The literature shows resident knowledge of perioperative care is lower than expected. METHODS The Johns Hopkins Preoperative Evaluation and Anesthesia Course was designed as an 8 module, 8 month online academic curriculum for the program's PGY-1 class. Each module includes a pretest, topic synopsis, lecture video, moderated case discussion and a posttest. All PGY-1 residents entering the program in July 2012 were eligible to participate. Residents starting in July 2010 served as the control group. A survey was administered to measure self-assessed knowledge of and comfort with components of preoperative anesthesia care and perceived anxiety about starting the clinical anesthesia year. Additional outcome measures included performance on the pretest and postmodule tests and Anesthesia Knowledge Test scores from day 1 of Clinical Anesthesia year 1 (CA-1, PGY-2) orientation. Statistical analysis included independent t tests, the Mann-Whitney test, and sensitivity analyses. RESULTS Residents in the intervention group showed an improvement of 16.25 to 39.60 percentage points between the pretest and posttest in each of the 8 subjects (P < .0001 in every subject). The intervention group median score was 24 percentile points higher on the Anesthesia Knowledge Test as compared with the control group (P = .0488; lower 95% CI, 9.92). Significant improvement was also seen across measures including comfort advising about medications (P < .0001), understanding of coexisting disease (P < .0001), comfort assessing patient airway (P = .0002), and anxiety about starting PGY-2 year (P = .0116). CONCLUSIONS We have demonstrated significantly positive impact of a comprehensive, longitudinal online, asynchronous, multimodal educational intervention on PGY-1 residents using objective and subjective data.
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Affiliation(s)
| | | | - Deborah A. Schwengel
- Corresponding author: Deborah A. Schwengel, MD, Johns Hopkins University School of Medicine, The Department of Anesthesiology and Critical Care Medicine, 1800 Orleans Street, Suite 6349H, Baltimore, MD 21287. Telephone (410) 955-6932, Fax: (410) 502-5312, Email address: Deborah A. Schwengel:
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Nawaz MAH, Majdinasab M, Latif U, Nasir M, Gokce G, Anwar MW, Hayat A. Development of a disposable electrochemical sensor for detection of cholesterol using differential pulse voltammetry. J Pharm Biomed Anal 2018; 159:398-405. [DOI: 10.1016/j.jpba.2018.07.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 05/29/2018] [Accepted: 07/06/2018] [Indexed: 12/17/2022]
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Irshad M, Mujahid A, Afzal A, Bajwa SZ, Hussain T, Zaman WU, Latif U, Athar MM. A miniaturized electronic sensor for instant monitoring of ethanol in gasohol fuel blends. RSC Adv 2018; 8:22952-22962. [PMID: 35540134 PMCID: PMC9081555 DOI: 10.1039/c8ra02170h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 06/15/2018] [Indexed: 11/25/2022] Open
Abstract
Gasoline–ethanol (gasohol) fuel blends have gained considerable attention in the petroleum and energy sectors as relatively cheaper and greener high-octane alternative fuels with gasoline-comparable efficiency in modern transportation vehicles. However, due to different combustion rates the relative concentration of ethanol in gasohol fuel blends may vary over time. Furthermore, there is a need to monitor ethanol concentration in fuel blends for quality control applications. This article reports a miniaturized electronic sensor based on an interdigital capacitor (IDC) as the transducer and a dual-imprinted titania–polyaniline composite film as the receptor. The device has an active surface area of 0.9 cm2 and is easy to fabricate. The receptor material is synthesized by imprinting ethanol in both titania sol (EITS, the matrix) and polyaniline nanoparticles (EIPani, the filler), and subsequently mixing them to obtain a dual-imprinted EITS–EIPani composite. The structural and morphological characteristics of the receptor layers are determined with Fourier transform infrared (FTIR) spectroscopy and atomic force microscopy (AFM), respectively. The IDC devices are fabricated with pristine EITS and dual-imprinted EITS–EIPani composite to test their metrological sensor characteristics in standard ethanol solutions and real-time gasohol fuel blends. The instant shift in capacitance is measured upon exposure to different concentrations of ethanol. These devices show excellent sensitivity and selectivity patterns and demonstrate reliable sensor response toward ethanol in different gasohol fuel blends with 1–10 vol% ethanol. The results of this study reveal that these miniaturized ethanol sensors are potentially useful for rapid analysis of ethanol in gasohol and may be optimized for onboard fuel quality control applications. A schematic representation of the developed setup for ethanol sensing measurements in gasohol blends.![]()
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Affiliation(s)
- Muhammad Irshad
- Institute of Chemistry
- University of the Punjab
- Quaid-e-Azam Campus
- Lahore
- Pakistan
| | - Adnan Mujahid
- Institute of Chemistry
- University of the Punjab
- Quaid-e-Azam Campus
- Lahore
- Pakistan
| | - Adeel Afzal
- Dipartimento di Chimica
- Università Degli Studi di Bari “Aldo Moro”
- Bari
- Italy
- Department of Chemistry
| | - Sadia Z. Bajwa
- National Institute of Biotechnology and Genetic Engineering
- Faisalabad
- Pakistan
| | - Tajamal Hussain
- Institute of Chemistry
- University of the Punjab
- Quaid-e-Azam Campus
- Lahore
- Pakistan
| | - Waheed-uz- Zaman
- Institute of Chemistry
- University of the Punjab
- Quaid-e-Azam Campus
- Lahore
- Pakistan
| | - Usman Latif
- Interdisciplinary Research Centre for Biomedical Materials
- COMSATS Institute of Information Technology
- Lahore
- Pakistan
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Mushtaq S, Khan JA, Rabbani F, Latif U, Arfan M, Yameen MA. Biocompatible biodegradable polymeric antibacterial nanoparticles for enhancing the effects of a third-generation cephalosporin against resistant bacteria. J Med Microbiol 2017; 66:318-327. [DOI: 10.1099/jmm.0.000445] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Affiliation(s)
- Sana Mushtaq
- Department of Pharmacy, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Jawad Akbar Khan
- Department of Pharmacy, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Faiz Rabbani
- Department of Environmental Sciences, COMSATS Institute of Information Technology, Vehari, Pakistan
| | - Usman Latif
- Interdisciplinary Research Center in Biomedical Materials, COMSATS Institute of Information Technology, Lahore, Pakistan
| | - Muhammad Arfan
- Department of Chemistry, School of Natural Sciences, National University of Sciences and Technology, H-12, Islamabad, Pakistan
| | - Muhammad Arfat Yameen
- Department of Pharmacy, COMSATS Institute of Information Technology, Abbottabad, Pakistan
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Nasir M, Nawaz MH, Latif U, Yaqub M, Hayat A, Rahim A. An overview on enzyme-mimicking nanomaterials for use in electrochemical and optical assays. Mikrochim Acta 2016. [DOI: 10.1007/s00604-016-2036-8] [Citation(s) in RCA: 147] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Vasilescu A, Nunes G, Hayat A, Latif U, Marty JL. Electrochemical Affinity Biosensors Based on Disposable Screen-Printed Electrodes for Detection of Food Allergens. Sensors (Basel) 2016; 16:E1863. [PMID: 27827963 PMCID: PMC5134522 DOI: 10.3390/s16111863] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Revised: 10/24/2016] [Accepted: 10/31/2016] [Indexed: 01/04/2023]
Abstract
Food allergens are proteins from nuts and tree nuts, fish, shellfish, wheat, soy, eggs or milk which trigger severe adverse reactions in the human body, involving IgE-type antibodies. Sensitive detection of allergens in a large variety of food matrices has become increasingly important considering the emergence of functional foods and new food manufacturing technologies. For example, proteins such as casein from milk or lysozyme and ovalbumin from eggs are sometimes used as fining agents in the wine industry. Nonetheless, allergen detection in processed foods is a challenging endeavor, as allergen proteins are degraded during food processing steps involving heating or fermentation. Detection of food allergens was primarily achieved via Enzyme-Linked Immuno Assay (ELISA) or by chromatographic methods. With the advent of biosensors, electrochemical affinity-based biosensors such as those incorporating antibodies and aptamers as biorecognition elements were also reported in the literature. In this review paper, we highlight the success achieved in the design of electrochemical affinity biosensors based on disposable screen-printed electrodes towards detection of protein allergens. We will discuss the analytical figures of merit for various disposable screen-printed affinity sensors in relation to methodologies employed for immobilization of bioreceptors on transducer surface.
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Affiliation(s)
- Alina Vasilescu
- International Centre of Biodynamics, 1B Intrarea Portocalelor, sector 6, 060101 Bucharest, Romania.
| | - Gilvanda Nunes
- Technological Chemistry Department, Federal University of Maranhão, CCET/UFMA, Av. Portugueses, Cidade Universitária do Canga, 65080-040 São Luis, MA, Brazil.
| | - Akhtar Hayat
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM) COMSATS Institute of Information Technology (CIIT), 54000 Lahore, Pakistan.
| | - Usman Latif
- Interdisciplinary Research Centre in Biomedical Materials (IRCBM) COMSATS Institute of Information Technology (CIIT), 54000 Lahore, Pakistan.
| | - Jean-Louis Marty
- BAE Laboratory, Université de Perpignan Via Domitia, 52 Avenue Paul Alduy, 66860 Perpignan, France.
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Latif U, Dickert FL. Graphene Hybrid Materials in Gas Sensing Applications. Sensors (Basel) 2015; 15:30504-24. [PMID: 26690156 PMCID: PMC4721734 DOI: 10.3390/s151229814] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2015] [Revised: 11/27/2015] [Accepted: 11/27/2015] [Indexed: 11/16/2022]
Abstract
Graphene, a two dimensional structure of carbon atoms, has been widely used as a material for gas sensing applications because of its large surface area, excellent conductivity, and ease of functionalization. This article reviews the most recent advances in graphene hybrid materials developed for gas sensing applications. In this review, synthetic approaches to fabricate graphene sensors, the nano structures of hybrid materials, and their sensing mechanism are presented. Future perspectives of this rapidly growing field are also discussed.
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Affiliation(s)
- Usman Latif
- COMSATS Institute of Information Technology, Department of Chemistry, Tobe Camp, University Road, 22060 Abbottabad, Pakistan.
| | - Franz L Dickert
- Department of Analytical Chemistry, University of Vienna, Währinger Str. 38, A-1090 Vienna, Austria.
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Latif U, Al-Rubeaan K, Saeb ATM. A Review on Antimicrobial Chitosan-Silver Nanocomposites: A Roadmap Toward Pathogen Targeted Synthesis. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2014.958834] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Azhar S, Latif U, Murtaza G, Khan SA, Hussain I. Mixed methodology approach in pharmacy practice research. Acta Pol Pharm 2013; 70:1123-1130. [PMID: 24383336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Healthcare providers play a major role in attending to all domains of health in a population. In terms of modem healthcare delivery, better health outcomes for population can be achieved by engaging multi-disciplinary expertise. In the last decade, pharmacy profession had transformed tremendously in terms of health and pharmaceutical service provision to both patients and general population. Within this practice transformation, pharmacists, especially those in developed countries, now occupy a respectable position within the healthcare system. In contrast, services and expertise offered by pharmacists in developing countries are still underutilized, and their role as healthcare professionals is not deemed to be important either by the community or by other healthcare providers, especially doctors and nurses. In order to explore the current perspectives regarding the role of pharmacists in the context of a developing country, a systematic research is needed. Mixed methodology research should be used for evidence generation. The philosophy of mixed method research came up decades ago. This approach is widely recommended for social and human sciences research. In recent existence, many researchers have begun to recommend mixed methods research as a separate methodology or design. Many factors have brought into the evolution of mixed methods research. A combination of both forms of data can provide the most complete analysis of the issues related to the pharmacy practice research. Numbers in quantitative and words in qualitative can be enclosed together to give the better understanding of research questions. Both forms of data are necessary for pharmacy practice research especially in case of developing countries where there is a need to generate the evidence for future health policy.
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Affiliation(s)
- Saira Azhar
- Department of Pharmaceutical Sciences, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Usman Latif
- Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Ghulam Murtaza
- Department of Pharmaceutical Sciences, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Shujaat A Khan
- Department of Pharmaceutical Sciences, COMSATS Institute of Information Technology, Abbottabad, Pakistan
| | - Izhar Hussain
- Department of Pharmaceutical Sciences, COMSATS Institute of Information Technology, Abbottabad, Pakistan
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Martin C, Austin S, Latif U. Difficult mask ventilation and the use of sugammadex. Anaesthesia 2012; 67:544-545. [DOI: 10.1111/j.1365-2044.2012.07122.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- C. Martin
- Mater Infirmorum Hospital, Belfast, UK
| | - S. Austin
- Mater Infirmorum Hospital, Belfast, UK
| | - U. Latif
- Mater Infirmorum Hospital, Belfast, UK
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Affiliation(s)
- Romana Schirhagl
- Department of Analytical Chemistry, University of Vienna, Waehringer Strasse 38, A-1090
Vienna, Austria
| | - Usman Latif
- Department of Analytical Chemistry, University of Vienna, Waehringer Strasse 38, A-1090
Vienna, Austria
- Department
of Chemistry, COMSATS Institute of Information Technology, Tobe Camp, University Road, 22060 Abbottabad, Pakistan
| | - Dagmar Podlipna
- Department of Analytical Chemistry, University of Vienna, Waehringer Strasse 38, A-1090
Vienna, Austria
| | - Hans Blumenstock
- Sanofi Germany, Process Development Biotechnology, D-65926 Frankfurt, Germany
| | - Franz L. Dickert
- Department of Analytical Chemistry, University of Vienna, Waehringer Strasse 38, A-1090
Vienna, Austria
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Latif U, Dickert FL. Conductometric sensors for monitoring degradation of automotive engine oil. Sensors (Basel) 2011; 11:8611-25. [PMID: 22164094 PMCID: PMC3231490 DOI: 10.3390/s110908611] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2011] [Revised: 08/31/2011] [Accepted: 09/01/2011] [Indexed: 12/04/2022]
Abstract
Conductometric sensors have been fabricated by applying imprinted polymers as receptors for monitoring engine oil quality. Titania and silica layers are synthesized via the sol-gel technique and used as recognition materials for acidic components present in used lubricating oil. Thin-film gold electrodes forming an interdigitated structure are used as transducers to measure the conductance of polymer coatings. Optimization of layer composition is carried out by varying the precursors, e.g., dimethylaminopropyltrimethoxysilane (DMAPTMS), and aminopropyl-triethoxysilane (APTES). Characterization of these sensitive materials is performed by testing against oil oxidation products, e.g., carbonic acids. The results depict that imprinted aminopropyltriethoxysilane (APTES) polymer is a promising candidate for detecting the age of used lubricating oil. In the next strategy, polyurethane-nanotubes composite as sensitive material is synthesized, producing appreciable differentiation pattern between fresh and used oils at elevated temperature with enhanced sensitivity.
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Affiliation(s)
- Usman Latif
- Department of Analytical Chemistry, University of Vienna, Waehringer Strasse 38, A-1090 Vienna, Austria.
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Latif U, Rohrer A, Lieberzeit PA, Dickert FL. QCM gas phase detection with ceramic materials—VOCs and oil vapors. Anal Bioanal Chem 2011; 400:2457-62. [DOI: 10.1007/s00216-011-4684-1] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2010] [Revised: 12/23/2010] [Accepted: 01/16/2011] [Indexed: 11/30/2022]
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Abstract
Quartz crystal microbalances (QCMs) were utilized for the detection of the noble gas xenon (Xe) by combining them with different recognition layers such as permethylated calixarenes (tetramethyl-tert-butylcalix[4]arene (Cal4Me), hexamethyl-tert-butylcalix[6]arene (Cal6Me)), and polyurethanes, with covalently embedded Cal4OH (Poly4Cal), or Cal6OH (Poly6Cal). A third type of sensitive material is synthesized from polyacrylic acid (PAA) and polyvinyl alcohol (PVA) and utilized as a sensitive coating. The results demonstrate that the Cal4Me layer gives higher response towards Xe, while, by the use of a second uncoated QCM channel, the influence of ambient humidity could be nearly completely compensated by signal subtraction. Moreover, the Cal4Me sensor shows excellent reversibility and rapid response time, providing a potentially reliable way to determine Xe during anaesthesia.
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Abstract
Mass sensitive sensors were applied for fast and label-free detection of bio-analytes. Robust and miniaturized sensor devices were fabricated by combining bio-mimetic imprinted surfaces with quartz crystal microbalances for the analysis of yeast and bacteria cells. These sensors allow us to differentiate between different growing stages of yeast cells. Moreover, the viability of cells was detected by structuring quartz crystal microbalance electrodes like a grid. Artificial yeast cells were produced to pattern the recognition layer, giving reversible enrichment of the respective bio-analytes. This approach was followed to ensure the reproducibility of the identical sensitive material in each case, because the properties of each cell depend on its growth stage, which varies over time. The strategy was further applied to develop a sensitive system for Escherichia coli. Structuring of these materials by soft lithography allows differentiation between cell strains, e.g. E. coli (strain W & B) with a five-fold selectivity.
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Sherman AC, Simonton S, Latif U, Nieder ML, Adams RH, Mehta P. Psychosocial supportive care for children receiving stem cell transplantation: practice patterns across centers. Bone Marrow Transplant 2005; 34:169-74. [PMID: 15235578 DOI: 10.1038/sj.bmt.1704546] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Although pediatric stem cell transplantation is associated with elevated risks for quality-of-life (QOL) deficits, morbidity, and late effects, little is known about how supportive care needs are addressed across different pediatric centers. This study examined practice patterns among centers enrolled in the Pediatric Blood and Marrow Transplant Consortium. In all, 65 centers (response rate=82.2%) were surveyed regarding QOL screening, psychosocial intervention services, and long-term follow-up care. Approximately 80% of centers provided routine screening for psychological difficulties and pain. A smaller number screened for fatigue (69.2%), cognitive deficits (52.3%), sleep difficulties (60.0%) or spiritual concerns (38.5%). Screening was conducted predominantly via interview; little use was made of standardized measures. Community-based centers screened some deficits more frequently than did academic ones (all P's</=0.09). In all, 60% of centers provided support groups and 49.2% offered arts-in-medicine programs. Most centers provided extended follow-up care. In some, follow-up continued until age 21 (45.4%), while in others it was sustained indefinitely (40.6%). Findings suggest that QOL screening would be enhanced by greater attention to domains that currently receive limited scrutiny, and by increased use of validated measures to supplement interview information. The proportion of centers that provide extended follow-up is encouraging, and offers opportunities to study long-term outcomes.
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Affiliation(s)
- A C Sherman
- Behavioral Medicine, Arkansas Cancer Research Center, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
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Sherman AC, Simonton S, Latif U, Spohn R, Tricot G. Psychosocial adjustment and quality of life among multiple myeloma patients undergoing evaluation for autologous stem cell transplantation. Bone Marrow Transplant 2004; 33:955-62. [PMID: 15034542 DOI: 10.1038/sj.bmt.1704465] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Stem cell transplantation has assumed a prominent place in the treatment of multiple myeloma, but relative to patients with other malignancies there is surprisingly little information about the adjustment difficulties and quality-of-life changes that these patients experience. This study examined psychosocial and functional deficits among myeloma patients assessed at a uniform period during their initial diagnostic evaluation, prior to beginning protocols at a transplant center. Validated self-report measures and clinician rating scales were used to assess 213 patients. Outcomes evaluated included emotional distress (Hospital Anxiety and Depression Scale, Brief Symptom Inventory), depression (Hamilton Depression Rating Scale), physical functioning, pain, and energy (SF-12). A significant proportion of patients experienced compromised psychosocial and physical functioning. Roughly one-third reported clinically elevated levels of distress, anxiety, and depression. In all, 59% scored below age-adjusted norms for daily physical functioning, 58% reported at least moderate levels of pain, and over 80% noted at least moderate fatigue. Clinical and demographic correlates of these outcomes were examined. These findings are among the first to characterize quality-of-life outcomes among myeloma patients in the transplant setting, and indicate that many patients experience considerable supportive care needs even prior to beginning aggressive regimens. Results highlight the importance of early screening.
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Affiliation(s)
- A C Sherman
- Behavioral Medicine, Arkansas Cancer Research Center, University of Arkansas for Medical Sciences, Little Rock 72205, USA.
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Sherman AC, Simonton S, Adams DC, Latif U, Plante TG, Burns SK, Poling T. Measuring religious faith in cancer patients: reliability and construct validity of the Santa Clara Strength of Religious Faith questionnaire. Psychooncology 2001; 10:436-43. [PMID: 11536422 DOI: 10.1002/pon.523] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Growing attention has focused on associations between religious involvement and health outcomes for cancer patients. Unfortunately, research has been hampered by lack of measures suitable for use in oncology settings. This study examined the performance of one recently developed measure, the Santa Clara Strength of Religious Faith Questionnaire (SCSORF). Initial investigations with cancer patients in a bone marrow transplant program and with non-oncology patients yielded promising results. This study provided additional information about temporal stability and convergent validity. The measure was evaluated in two well-defined samples: (1) 95 breast cancer patients, and (2) 53 healthy young adults. Most of the cancer patients had recent diagnoses and localized or regional disease. In each sample, the instrument demonstrated high test-retest reliability (r's=0.82-0.93) and internal consistency (r's=0.95-0.97). It displayed strong correlations with measures of intrinsic religiosity (r's=0.67-0.82, p<0.0001), and moderate correlations with organizational religiosity (r's=0.61-069, p<0.0001), non-organizational religiosity (r's=0.52-0.55, p<0.0001), comfort from religion (r=0.58, p<0.0001), and ratings of self as religious (r=0.58, p<0.0001). Among cancer patients, scores were significantly associated with optimism (r=0.30, p<0.01), but not with openness of family communication about cancer or perceived social support. These data build on previous findings with cancer patients, and suggest that the SCSORF may be a useful measure of religious faith in oncology settings.
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Affiliation(s)
- A C Sherman
- Behavioral Medicine, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA.
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