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Farooqui M, Galecio-Castillo M, Hassan AE, Divani AA, Jumaa M, Ribo M, Petersen NH, Abraham MG, Fifi JT, Guerrero WR, Malik A, Siegler JE, Nguyen TN, Sheth SA, Yoo AJ, Linares G, Janjua N, Quispe-Orozco D, Tekle WG, Sabbagh SY, Zaidi SF, Olive Gadea M, Prasad A, Qureshi A, De Leacy RA, Abdalkader M, Salazar-Marioni S, Soomro J, Gordon W, Turabova C, Rodriguez-Calienes A, Vivanco-Suarez J, Mokin M, Yavagal DR, Jovin TG, Ortega-Gutierrez S. Anesthetic management for large vessel occlusion acute ischemic stroke with tandem lesions. J Neurointerv Surg 2024:jnis-2023-021360. [PMID: 38429099 DOI: 10.1136/jnis-2023-021360] [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: 12/11/2023] [Accepted: 02/13/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND Endovascular therapy (EVT) stands as an established and effective intervention for acute ischemic stroke in patients harboring tandem lesions (TLs). However, the optimal anesthetic strategy for EVT in TL patients remains unclear. This study aims to evaluate the impact of distinct anesthetic techniques on outcomes in acute ischemic stroke patients presenting with TLs. METHODS Patient-level data, encompassing cases from 16 diverse centers, were aggregated for individuals with anterior circulation TLs treated between January 2015 and December 2020. A stratification based on anesthetic technique was conducted to distinguish between general anesthesia (GA) and procedural sedation (PS). Multivariable logistic regression models were built to discern the association between anesthetic approach and outcomes, including the favorable functional outcome defined as 90-day modified Rankin Score (mRS) of 0-2, ordinal shift in mRS, symptomatic intracranial hemorrhage (sICH), any hemorrhage, successful recanalization (modified Thrombolysis In Cerebral Infarction (mTICI) score ≥2b), excellent recanalization (mTICI 3), first pass effect (FPE), early neurological improvement (ENI), door-to-groin and recanalization times, intrahospital mortality, and 90-day mortality. RESULTS Among 691 patients from 16 centers, 595 patients (GA 38.7%, PS 61.3%) were included in the final analysis. There were no significant differences noted in the door-to-groin time (80 (46-117.5) mins vs 54 (21-100), P=0.607) and groin to recanalization time (59 (39.5-85.5) mins vs 54 (38-81), P=0.836) among the groups. The odds of a favorable functional outcome (36.6% vs 52.6%; adjusted OR (aOR) 0.56, 95% CI 0.38 to 0.84, P=0.005) and a favorable shift in the 90-day mRS (aOR 0.71, 95% CI 0.51 to 0.99, P=0.041) were lower in the GA group. No differences were noted for sICH (3.9% vs 4.7%, P=0.38), successful recanalization (89.1% vs 86.5%, P=0.13), excellent recanalization (48.5% vs 50.3%, P=0.462), FPE (53.6% vs 63.4%, P=0.05), ENI (38.9% vs 38.8%, P=0.138), and 90-day mortality (20.3% vs 16.3%, P=0.525). An interaction was noted for favorable functional outcome between the type of anesthesia and the baseline Alberta Stroke Program Early CT Score (ASPECTS) (P=0.033), degree of internal carotid artery (ICA) stenosis (P<0.001), and ICA stenting (P<0.001), and intraparenchymal hematoma between the type of anesthesia and intravenous thrombolysis (P=0.019). In a subgroup analysis, PS showed better functional outcomes in patients with age ≤70 years, National Institutes of Health Stroke Scale (NIHSS) score <15, and acute ICA stenting. CONCLUSIONS Our findings suggest that the preference for PS not only aligns with comparable procedural safety but is also associated with superior functional outcomes. These results prompt a re-evaluation of current anesthesia practices in EVT, urging clinicians to consider patient-specific characteristics when determining the optimal anesthetic strategy for this patient population.
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Affiliation(s)
- Mudassir Farooqui
- Neurology, The University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | | | - Ameer E Hassan
- Department of Neurology, University of Texas Rio Grande Valley, Harlingen, Texas, USA
| | - Afshin A Divani
- Neurology, University of New Mexico Health System, Albuquerque, New Mexico, USA
| | | | - Marc Ribo
- Stroke Unit, Neurology, Hospital Vall d'Hebron, Barcelona, Spain
- Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Nils H Petersen
- Neurology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Michael G Abraham
- Neurology and Radiology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | - Johanna T Fifi
- Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, New York, USA
| | | | - Amer Malik
- Neurology, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - James E Siegler
- Cooper Neurological Institute, Cooper University Health Care, Camden, New Jersey, USA
| | - Thanh N Nguyen
- Neurology, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Sunil A Sheth
- Neurology, University of Texas Health Science Center at Houston, Houston, Texas, USA
| | - Albert J Yoo
- Neurointervention, Texas Stroke Institute, Plano, Texas, USA
| | - Guillermo Linares
- Neurology, School of Medicine Saint Louis University, Saint Louis, Missouri, USA
| | - Nazli Janjua
- Neurology, Pomona Valley Hospital Medical Center, Pomona, California, USA
| | - Darko Quispe-Orozco
- Neurology, The University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Wondwossen G Tekle
- Department of Neurology, Valley Baptist Medical Center - Harlingen, Harlingen, Texas, USA
| | - Sara Y Sabbagh
- Neurology, University of New Mexico Health System, Albuquerque, New Mexico, USA
| | - Syed F Zaidi
- Neurology, University of Toledo Health Science Campus, Toledo, Ohio, USA
| | | | - Ayush Prasad
- Yale University School of Medicine, New Haven, Connecticut, USA
| | - Abid Qureshi
- Neurology and Radiology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | | | | | | | | | - Weston Gordon
- Neurology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | | | - Aaron Rodriguez-Calienes
- The University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
- Grupo de Investigacion Neurociencia, Efectividad Clinica y Salud Publica, Universidad Cientifica del Sur Facultad de Ciencias de la Salud, Lima, Peru
| | - Juan Vivanco-Suarez
- Neurology, The University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Maxim Mokin
- Neurosurgery, University of South Florida College of Medicine, Tampa, Florida, USA
| | - Dileep R Yavagal
- Neurology and Neurosurgery, University of Miami, Miami, Florida, USA
| | - Tudor G Jovin
- Neurology, Cooper University Hospital, Camden, New Jersey, USA
| | - Santiago Ortega-Gutierrez
- Neuroloy, Neurosurgery and Radiology, The University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
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2
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Prasad A, Gilmore EJ, Kim JA, Begunova L, Olexa M, Beekman R, Falcone GJ, Matouk C, Ortega-Gutierrez S, Temkin NR, Barber J, Diaz-Arrastia R, de Havenon A, Petersen NH. Impact of Therapeutic Interventions on Cerebral Autoregulatory Function Following Severe Traumatic Brain Injury: A Secondary Analysis of the BOOST-II Study. Neurocrit Care 2023:10.1007/s12028-023-01896-x. [PMID: 38158481 DOI: 10.1007/s12028-023-01896-x] [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: 05/01/2023] [Accepted: 11/17/2023] [Indexed: 01/03/2024]
Abstract
BACKGROUND The Brain Oxygen Optimization in Severe Traumatic Brain Injury Phase II randomized controlled trial used a tier-based management protocol based on brain tissue oxygen (PbtO2) and intracranial pressure (ICP) monitoring to reduce brain tissue hypoxia after severe traumatic brain injury. We performed a secondary analysis to explore the relationship between brain tissue hypoxia, blood pressure (BP), and interventions to improve cerebral perfusion pressure (CPP). We hypothesized that BP management below the lower limit of autoregulation would lead to cerebral hypoperfusion and brain tissue hypoxia that could be improved with hemodynamic augmentation. METHODS Of the 119 patients enrolled in the Brain Oxygen Optimization in Severe Traumatic Brain Injury Phase II trial, 55 patients had simultaneous recordings of arterial BP, ICP, and PbtO2. Autoregulatory function was measured by interrogating changes in ICP and PbtO2 in response to fluctuations in CPP using time-correlation analysis. The resulting autoregulatory indices (pressure reactivity index and oxygen reactivity index) were used to identify the "optimal" CPP and limits of autoregulation for each patient. Autoregulatory function and percent time with CPP outside personalized limits of autoregulation were calculated before, during, and after all interventions directed to optimize CPP. RESULTS Individualized limits of autoregulation were computed in 55 patients (mean age 38 years, mean monitoring time 92 h). We identified 35 episodes of brain tissue hypoxia (PbtO2 < 20 mm Hg) treated with CPP augmentation. Following each intervention, mean CPP increased from 73 ± 14 mm Hg to 79 ± 17 mm Hg (p = 0.15), and mean PbtO2 improved from 18.4 ± 5.6 mm Hg to 21.9 ± 5.6 mm Hg (p = 0.01), whereas autoregulatory function trended toward improvement (oxygen reactivity index 0.42 vs. 0.37, p = 0.14; pressure reactivity index 0.25 vs. 0.21, p = 0.2). Although optimal CPP and limits remained relatively unchanged, there was a significant decrease in the percent time with CPP below the lower limit of autoregulation in the 60 min after compared with before an intervention (11% vs. 23%, p = 0.05). CONCLUSIONS Our analysis suggests that brain tissue hypoxia is associated with cerebral hypoperfusion characterized by increased time with CPP below the lower limit of autoregulation. Interventions to increase CPP appear to improve autoregulation. Further studies are needed to validate the importance of autoregulation as a modifiable variable with the potential to improve outcomes.
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Affiliation(s)
- Ayush Prasad
- Division of Neurocritical Care and Emergency, Department of Neurology, Yale University School of Medicine, 15 York St, LCI 1003, New Haven, CT, CT 06510, USA
| | - Emily J Gilmore
- Division of Neurocritical Care and Emergency, Department of Neurology, Yale University School of Medicine, 15 York St, LCI 1003, New Haven, CT, CT 06510, USA
| | - Jennifer A Kim
- Division of Neurocritical Care and Emergency, Department of Neurology, Yale University School of Medicine, 15 York St, LCI 1003, New Haven, CT, CT 06510, USA
| | - Liza Begunova
- Division of Neurocritical Care and Emergency, Department of Neurology, Yale University School of Medicine, 15 York St, LCI 1003, New Haven, CT, CT 06510, USA
| | - Madelynne Olexa
- Division of Neurocritical Care and Emergency, Department of Neurology, Yale University School of Medicine, 15 York St, LCI 1003, New Haven, CT, CT 06510, USA
| | - Rachel Beekman
- Division of Neurocritical Care and Emergency, Department of Neurology, Yale University School of Medicine, 15 York St, LCI 1003, New Haven, CT, CT 06510, USA
| | - Guido J Falcone
- Division of Neurocritical Care and Emergency, Department of Neurology, Yale University School of Medicine, 15 York St, LCI 1003, New Haven, CT, CT 06510, USA
| | - Charles Matouk
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT, USA
| | | | - Nancy R Temkin
- Department of Neurological Surgery, University of Washington, Seattle, WA, USA
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Jason Barber
- Department of Biostatistics, University of Washington, Seattle, WA, USA
| | - Ramon Diaz-Arrastia
- Department of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Adam de Havenon
- Division of Neurocritical Care and Emergency, Department of Neurology, Yale University School of Medicine, 15 York St, LCI 1003, New Haven, CT, CT 06510, USA
| | - Nils H Petersen
- Division of Neurocritical Care and Emergency, Department of Neurology, Yale University School of Medicine, 15 York St, LCI 1003, New Haven, CT, CT 06510, USA.
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3
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Galecio-Castillo M, Quispe-Orozco D, Farooqui M, Dajles A, Vivanco-Suarez J, Rodriguez-Calienes A, Prasad A, Begunova L, Petersen NH, Ortega-Gutierrez S. Association between intraprocedural drops in blood pressure and infarct growth rate patterns after acute large-vessel occlusions. J Neurointerv Surg 2023:jnis-2023-020899. [PMID: 37923382 DOI: 10.1136/jnis-2023-020899] [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: 08/09/2023] [Accepted: 10/17/2023] [Indexed: 11/07/2023]
Abstract
BACKGROUND Infarct growth rate (IGR) differs among patients with acute ischemic stroke due to large vessel occlusion (LVO-AIS), and this variability has critical clinical repercussions. We explored IGR patterns and their association with blood pressure during endovascular therapy (EVT). METHODS This is a two-center cohort observational study that included consecutive anterior circulation LVO-AIS patients who underwent EVT and achieved modified Thrombolysis in Cerebral Infarction (mTICI) 2 c-3. Initial and final infarct volumes (FIV) were defined using admission computed tomography perfusion (CTP) defined as relative cerebral blood flow (rCBF) <30%, and diffusion-weighted imaging-magnetic resonance imaging (DWI-MRI) at 24 hours post-EVT. We categorized IGR patterns as exponential (ExpIGR) and Non-exponential (NonExp) based on their growth curves. We then dichotomized ExpIGR clinical significance based on the association of infarct growth with 90-day Modified Rankin Score (mRS) as ExpIGR-A (>13 mL) and ExpIGR-B (<13 mL). Intraprocedural blood pressure (BP) drops were calculated as the difference between median arterial pressure (MAP) at admission and the lowest intraprocedural MAP reading before recanalization, and the area between admission MAP threshold and all lower measurements of intraprocedural MAP. Logistic and linear regression were used to investigate associations between variables of interest. RESULTS Of 159 modified Thrombolysis in Cerebral Infarction (mTICI) 2 c-3 patients, we found that 36% demonstrated ExpIGR-A, 31% ExpIGR-B, and 32.7% NonExp patterns. The Exp-A and Exp-B groups differed significantly in National Institutes of Health Stroke Scale (NIHSS) score, Alberta Stroke Program Early CT Score (ASPECTS), glucose, and FIV. The Exp-A and NonExp groups differed in rCBF <30% vol, and time of stroke onset (SO) to admission CTP; and the Exp-B and NonExp groups in NIHSS, rCBF <30%, Tmax <6 s volume, collateral flow measured by hypoperfusion intensity ratio (HIR), and FIV. Hypotensive MAP area (HMA) was independently associated with an ExpIGR-A pattern. Infarct volume increased by 1 mL per 100 units of hypotensive area and 4.2 mL per 0.1 units of HIR, with a significant interaction between both variables. CONCLUSION After an LVO-AIS, the IGR can be differentiated into two distinct exponential and non-exponential patterns. A subgroup of patients with the exponential pattern experienced clinically meaningful infarct growth rates between CTP acquisition and reperfusion and seem to be highly vulnerable to episodes of sustained intraprocedural BP drops during EVT.
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Affiliation(s)
| | | | - Mudassir Farooqui
- Neurology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Andres Dajles
- Biostatistics, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | | | | | - Ayush Prasad
- Department of Neurology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Liza Begunova
- Department of Neurology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Nils H Petersen
- Department of Neurology, Yale School of Medicine, New Haven, Connecticut, USA
| | - Santiago Ortega-Gutierrez
- Neurology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
- Neurosurgery and Radiology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
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4
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Fritz C, Barrette LX, Prasad A, Triantafillou V, Suresh N, De Ravin E, Rajasekaran K. Human papillomavirus related oropharyngeal cancer: identifying and quantifying topics of patient interest. J Laryngol Otol 2023; 137:1141-1148. [PMID: 36794539 DOI: 10.1017/s0022215123000270] [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] [Indexed: 02/17/2023]
Abstract
OBJECTIVE As the incidence of human papillomavirus related oropharyngeal cancer continues to rise, it is increasingly important for public understanding to keep pace. This study aimed to identify areas of patient interest and concern regarding human papillomavirus and oropharyngeal cancer. METHOD This study was a retrospective survey of search queries containing the keywords 'HPV cancer' between September 2015 and March 2021. RESULTS There was 3.5-fold more interest in human papillomavirus related oropharyngeal cancer (15 800 searches per month) compared with human papillomavirus related cervical cancer (4500 searches per month). Among searches referencing cancer appearance, 96.8 per cent pertained to the head and neck region (3050 searches per month). Among vaccination searches, 16 of 47 (34.0 per cent; 600 searches per month) referenced human papillomavirus vaccines as being a cause of cancer rather than preventing cancer. CONCLUSION The vast majority of online searches into human papillomavirus cancer pertain to the oropharynx. There are relatively few search queries on the topic of vaccination preventing human papillomavirus associated oropharyngeal cancer, which highlights the continued importance of patient education and awareness campaigns.
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Affiliation(s)
- C Fritz
- Department of Otorhinolaryngology - Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - L-X Barrette
- Department of Otorhinolaryngology - Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
- Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA, USA
| | - A Prasad
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - V Triantafillou
- Department of Otorhinolaryngology - Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - N Suresh
- Department of Otorhinolaryngology - Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
| | - E De Ravin
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - K Rajasekaran
- Department of Otorhinolaryngology - Head & Neck Surgery, University of Pennsylvania, Philadelphia, PA, USA
- Leonard Davis Institute of Health Economics, University of Pennsylvania, Philadelphia, PA, USA
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5
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Dhar R, Kumar A, Chen Y, Begunova Y, Olexa M, Prasad A, Carey G, Gonzalez I, Bhatia K, Hamed M, Heitsch L, Mainali S, Petersen N, Lee JM. Imaging biomarkers of cerebral edema automatically extracted from routine CT scans of large vessel occlusion strokes. J Neuroimaging 2023; 33:606-616. [PMID: 37095592 PMCID: PMC10524672 DOI: 10.1111/jon.13109] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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] [Received: 01/06/2023] [Revised: 04/13/2023] [Accepted: 04/15/2023] [Indexed: 04/26/2023] Open
Abstract
BACKGROUND AND PURPOSE Volumetric and densitometric biomarkers have been proposed to better quantify cerebral edema after stroke, but their relative performance has not been rigorously evaluated. METHODS Patients with large vessel occlusion stroke from three institutions were analyzed. An automated pipeline extracted brain, cerebrospinal fluid (CSF), and infarct volumes from serial CTs. Several biomarkers were measured: change in global CSF volume from baseline (ΔCSF); ratio of CSF volumes between hemispheres (CSF ratio); and relative density of infarct region compared with mirrored contralateral region (net water uptake [NWU]). These were compared to radiographic standards, midline shift and relative hemispheric volume (RHV) and malignant edema, defined as deterioration resulting in need for osmotic therapy, decompressive surgery, or death. RESULTS We analyzed 255 patients with 210 baseline CTs, 255 24-hour CTs, and 81 72-hour CTs. Of these, 35 (14%) developed malignant edema and 63 (27%) midline shift. CSF metrics could be calculated for 310 (92%), while NWU could only be obtained from 193 (57%). Peak midline shift was correlated with baseline CSF ratio (ρ = -.22) and with CSF ratio and ΔCSF at 24 hours (ρ = -.55/.63) and 72 hours (ρ = -.66/.69), but not with NWU (ρ = .15/.25). Similarly, CSF ratio was correlated with RHV (ρ = -.69/-.78), while NWU was not. Adjusting for age, National Institutes of Health Stroke Scale, tissue plasminogen activator treatment, and Alberta Stroke Program Early CT Score, CSF ratio (odds ratio [OR]: 1.95 per 0.1, 95% confidence interval [CI]: 1.52-2.59) and ΔCSF at 24 hours (OR: 1.87 per 10%, 95% CI: 1.47-2.49) were associated with malignant edema. CONCLUSION CSF volumetric biomarkers can be automatically measured from almost all routine CTs and correlate better with standard edema endpoints than net water uptake.
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Affiliation(s)
- Rajat Dhar
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO
| | - Atul Kumar
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO
| | - Yasheng Chen
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO
| | | | - Madelynne Olexa
- Department of Neurology, Yale School of Medicine, New Haven, CT
| | - Ayush Prasad
- Department of Neurology, Yale School of Medicine, New Haven, CT
| | - Grace Carey
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO
| | - Isabella Gonzalez
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO
| | - Kunal Bhatia
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO
| | - Mohammad Hamed
- Department of Neurology, The Ohio State University, Columbus, OH
| | - Laura Heitsch
- Department of Emergency Medicine, Washington University School of Medicine, Saint Louis, MO
| | - Shraddha Mainali
- Department of Neurology, Virginia Commonwealth University, Richmond, VA
| | - Nils Petersen
- Department of Neurology, Yale School of Medicine, New Haven, CT
| | - Jin-Moo Lee
- Department of Neurology, Washington University School of Medicine, Saint Louis, MO
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6
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Farooqui M, Zaidat OO, Hassan AE, Quispe-Orozco D, Petersen N, Divani AA, Ribo M, Abraham M, Fifi J, Guerrero WR, Malik AM, Siegler JE, Nguyen TN, Sheth S, Yoo AJ, Linares G, Janjua N, Galecio-Castillo M, Tekle WG, Ringheanu VM, Oliver M, Dawod G, Kobsa J, Prasad A, Ikram A, Lin E, Below K, Zevallos CB, Gadea MO, Qureshi A, Dajles A, Matsoukas S, Rana A, Abdalkader M, Salazar-Marioni S, Soomro J, Gordon W, Vivanco-Suarez J, Turabova C, Mokin M, Yavagal DR, Jumaa MA, Ortega-Gutierrez S. Functional and Safety Outcomes of Carotid Artery Stenting and Mechanical Thrombectomy for Large Vessel Occlusion Ischemic Stroke With Tandem Lesions. JAMA Netw Open 2023; 6:e230736. [PMID: 36857054 PMCID: PMC9978940 DOI: 10.1001/jamanetworkopen.2023.0736] [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] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Accepted: 01/06/2023] [Indexed: 03/02/2023] Open
Abstract
Importance Approximately 10% to 20% of large vessel occlusion (LVO) strokes involve tandem lesions (TLs), defined as concomitant intracranial LVO and stenosis or occlusion of the cervical internal carotid artery. Mechanical thrombectomy (MT) may benefit patients with TLs; however, optimal management and procedural strategy of the cervical lesion remain unclear. Objective To evaluate the association of carotid artery stenting (CAS) vs no stenting and medical management with functional and safety outcomes among patients with TL-LVOs. Design, Setting, and Participants This cross-sectional study included consecutive patients with acute anterior circulation TLs admitted across 17 stroke centers in the US and Spain between January 1, 2015, and December 31, 2020. Data analysis was performed from August 2021 to February 2022. Inclusion criteria were age of 18 years or older, endovascular therapy for intracranial occlusion, and presence of extracranial internal carotid artery stenosis (>50%) demonstrated on pre-MT computed tomography angiography, magnetic resonance angiography, or digital subtraction angiography. Exposures Patients with TLs were divided into CAS vs nonstenting groups. Main Outcomes and Measures Primary clinical and safety outcomes were 90-day functional independence measured by a modified Rankin Scale (mRS) score of 0 to 2 and symptomatic intracranial hemorrhage (sICH), respectively. Secondary outcomes were successful reperfusion (modified Thrombolysis in Cerebral Infarction score ≥2b), discharge mRS score, ordinal mRS score, and mortality at 90 days. Results Of 685 patients, 623 (mean [SD] age, 67 [12.2] years; 406 [65.2%] male) were included in the analysis, of whom 363 (58.4%) were in the CAS group and 260 (41.6%) were in the nonstenting group. The CAS group had a lower proportion of patients with atrial fibrillation (38 [10.6%] vs 49 [19.2%], P = .002), a higher proportion of preprocedural degree of cervical stenosis on digital subtraction angiography (90%-99%: 107 [32.2%] vs 42 [20.5%], P < .001) and atherosclerotic disease (296 [82.0%] vs 194 [74.6%], P = .003), a lower median (IQR) National Institutes of Health Stroke Scale score (15 [10-19] vs 17 [13-21], P < .001), and similar rates of intravenous thrombolysis and stroke time metrics when compared with the nonstenting group. After adjustment for confounders, the odds of favorable functional outcome (adjusted odds ratio [aOR], 1.67; 95% CI, 1.20-2.40; P = .007), favorable shift in mRS scores (aOR, 1.46; 95% CI, 1.02-2.10; P = .04), and successful reperfusion (aOR, 1.70; 95% CI, 1.02-3.60; P = .002) were significantly higher for the CAS group compared with the nonstenting group. Both groups had similar odds of sICH (aOR, 0.90; 95% CI, 0.46-2.40; P = .87) and 90-day mortality (aOR, 0.78; 95% CI, 0.50-1.20; P = .27). No heterogeneity was noted for 90-day functional outcome and sICH in prespecified subgroups. Conclusions and Relevance In this multicenter, international cross-sectional study, CAS of the cervical lesion during MT was associated with improvement in functional outcomes and reperfusion rates without an increased risk of sICH and mortality in patients with TLs.
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Affiliation(s)
- Mudassir Farooqui
- Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City
| | - Osama O. Zaidat
- Department of Neurology, Saint Vincent Mercy Hospital, Toledo, Ohio
| | - Ameer E. Hassan
- Department of Neurology, Valley Baptist Medical Center/University of Texas Rio Grande Valley, Harlingen
| | - Darko Quispe-Orozco
- Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City
| | - Nils Petersen
- Department of Neurology, Yale University School of Medicine, New Haven, Connecticut
| | - Afshin A. Divani
- Department of Neurology, University of New Mexico Health Science Center, Albuquerque
| | - Marc Ribo
- Department of Neurology, Hospital Vall d’Hebron, Barcelona, Barcelona, Spain
| | - Michael Abraham
- Department of Neurology, University of Kansas Medical Center, Kansas City
| | - Johanna Fifi
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Waldo R. Guerrero
- Department of Neurology and Brain Repair, University of South Florida, Tampa
| | - Amer M. Malik
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida
| | - James E. Siegler
- Cooper Neurological Institute, Cooper University Hospital, Camden, New Jersey
| | - Thanh N. Nguyen
- Department of Neurology, Boston Medical Center, Boston, Massachusetts
| | - Sunil Sheth
- Department of Neurology, UTHealth McGovern Medical School, Houston, Texas
| | | | - Guillermo Linares
- Department of Neurology, Saint Louis University School of Medicine, St Louis, Missouri
| | - Nazli Janjua
- Asia Pacific Comprehensive Stroke Institute, Pomona Valley Hospital Medical Center, Pomona, California
| | | | - Wondewossen G. Tekle
- Department of Neurology, Valley Baptist Medical Center/University of Texas Rio Grande Valley, Harlingen
| | - Victor M. Ringheanu
- Department of Clinical Research, Valley Baptist Medical Center, Harlingen, Texas
| | - Marion Oliver
- Department of Neurology, University of Toledo College of Medicine and Life Sciences, Toledo, Ohio
| | - Giana Dawod
- Department of Neurology, Weill Cornell Medicine, New York, New York
| | - Jessica Kobsa
- Department of Neurology, Yale University School of Medicine, New Haven, Connecticut
| | - Ayush Prasad
- Department of Neurology, Yale University School of Medicine, New Haven, Connecticut
| | - Asad Ikram
- Department of Neurology, University of New Mexico Health Science Center, Albuquerque
| | - Eugene Lin
- Department of Neurology, Saint Vincent Mercy Hospital, Toledo, Ohio
| | - Kristine Below
- Department of Neurology, Saint Vincent Mercy Hospital, Toledo, Ohio
| | - Cynthia B. Zevallos
- Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City
| | - Marta Olivé Gadea
- Department of Neurology, Hospital Vall d’Hebron, Barcelona, Barcelona, Spain
| | - Abid Qureshi
- Department of Neurology, University of Kansas Medical Center, Kansas City
| | - Andres Dajles
- Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City
| | - Stavros Matsoukas
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Ameena Rana
- Cooper Neurological Institute, Cooper University Hospital, Camden, New Jersey
| | | | | | | | - Weston Gordon
- Department of Neurology, Saint Louis University School of Medicine, St Louis, Missouri
| | - Juan Vivanco-Suarez
- Department of Neurology, University of Iowa Hospitals and Clinics, Iowa City
| | - Charoskhon Turabova
- Asia Pacific Comprehensive Stroke Institute, Pomona Valley Hospital Medical Center, Pomona, California
| | - Maxim Mokin
- Department of Neurology and Brain Repair, University of South Florida, Tampa
| | - Dileep R. Yavagal
- Department of Neurology, University of Miami Miller School of Medicine, Miami, Florida
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7
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Balasundaram A, Srinivasan S, Prasad A, Malik J, Kumar A. Hippocampus Segmentation-Based Alzheimer's Disease Diagnosis and Classification of MRI Images. Arab J Sci Eng 2023; 48:1-17. [PMID: 36619218 PMCID: PMC9810248 DOI: 10.1007/s13369-022-07538-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Accepted: 12/12/2022] [Indexed: 01/05/2023]
Abstract
Alzheimer's disease represents a neurological condition characterized by steady cognitive decline and eventual memory loss due to the death of brain cells. It is one of the most prominent dementia types observed in patients and which hence underlines the imminent need for potential methods to diagnose the disease early on. This work considers a novel approach by utilizing a reduced version of one of the datasets used in this work to achieve a considerably accurate prediction while also enabling quicker training. It leverages image segmentation to isolate the hippocampus region from brain MRI images and then strikes a comparison between models trained on the segmented portions and models trained on complete images. This research uses two datasets-4 classes of images from Kaggle and a popular OASIS 2 MRI and demographic dataset. A deep learning-based approach was adopted to train the Kaggle dataset to perform severity classification, and the hippocampus region segmented from a reduced version of the OASIS dataset was trained on supervised and ensemble learning algorithms to detect Alzheimer's disease. The metric used for the assessment of model performance is classification accuracy. A comparative analysis between the proposed approach and existing work was also performed, and it was observed that the proposed approach is effective in the early diagnosis of Alzheimer's disease.
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Affiliation(s)
- A. Balasundaram
- School of Computer Science and Engineering, Center for Cyber Physical Systems, Vellore Institute of Technology, Chennai, Tamil Nadu India
| | - Sruthi Srinivasan
- School of Computer Science and Engineering, Vellore Institute of Technology (VIT), Chennai, Tamil Nadu India
| | - A. Prasad
- School of Computer Science and Engineering, Vellore Institute of Technology (VIT), Chennai, Tamil Nadu India
| | - Jahan Malik
- School of Computer Science and Engineering, Vellore Institute of Technology (VIT), Chennai, Tamil Nadu India
| | - Ayush Kumar
- School of Computer Science and Engineering, Vellore Institute of Technology (VIT), Chennai, Tamil Nadu India
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8
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Prasad A, Kobsa J, Kodali S, Bartolome D, Begunova L, Quispe-Orozco D, Farooqui M, Zevallos C, Ortega-Gutiérrez S, Anadani M, Almallouhi E, Spiotta AM, Giles JA, Keyrouz SG, Kim JT, Maier IL, Liman J, Psychogios MN, Riou-Comte N, Richard S, Gory B, Quintero Wolfe S, Brown PA, Fargen KM, Mistry EA, Fakhri H, Mistry A, Wong KH, Nascimento FA, Kan P, de Havenon A, Sheth KN, Petersen NH. Temporal profiles of systolic blood pressure variability and neurologic outcomes after endovascular thrombectomy. Eur Stroke J 2022; 7:365-375. [PMID: 36478756 PMCID: PMC9720854 DOI: 10.1177/23969873221106907] [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: 01/18/2022] [Accepted: 05/23/2022] [Indexed: 11/16/2022] Open
Abstract
Introduction Observational studies have found an increased risk of hemorrhagic transformation and worse functional outcomes in patients with higher systolic blood pressure variability (BPV). However, the time-varying behavior of BPV after endovascular thrombectomy (EVT) and its effects on functional outcome have not been well characterized. Patients and methods We analyzed data from an international cohort of patients with large-vessel occlusion stroke who underwent EVT at 11 centers across North America, Europe, and Asia. Repeated time-stamped blood pressure data were recorded for the first 72 h after thrombectomy. Parameters of BPV were calculated in 12-h epochs using five established methodologies. Systolic BPV trajectories were generated using group-based trajectory modeling, which separates heterogeneous longitudinal data into groups with similar patterns. Results Of the 2041 patients (age 69 ± 14, 51.4% male, NIHSS 15 ± 7, mean number of BP measurements 50 ± 28) included in our analysis, 1293 (63.4%) had a poor 90-day outcome (mRS ⩾ 3) or a poor discharge outcome (mRS ⩾ 3). We identified three distinct SBP trajectories: low (25%), moderate (64%), and high (11%). Compared to patients with low BPV, those in the highest trajectory group had a significantly greater risk of a poor functional outcome after adjusting for relevant confounders (OR 2.2; 95% CI 1.2-3.9; p = 0.008). In addition, patients with poor outcomes had significantly higher systolic BPV during the epochs that define the first 24 h after EVT (p < 0.001). Discussion and conclusions Acute ischemic stroke patients demonstrate three unique systolic BPV trajectories that differ in their association with functional outcome. Further research is needed to rapidly identify individuals with high-risk BPV trajectories and to develop treatment strategies for targeting high BPV.
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Affiliation(s)
- Ayush Prasad
- Department of Neurology, Yale
University School of Medicine, New Haven, CT, USA
| | - Jessica Kobsa
- Department of Neurology, Yale
University School of Medicine, New Haven, CT, USA
| | - Sreeja Kodali
- Department of Neurology, Yale
University School of Medicine, New Haven, CT, USA
| | - David Bartolome
- Department of Neurology, Yale
University School of Medicine, New Haven, CT, USA
| | - Liza Begunova
- Department of Neurology, Yale
University School of Medicine, New Haven, CT, USA
| | - Darko Quispe-Orozco
- Department of Neurology, University of
Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Mudassir Farooqui
- Department of Neurology, University of
Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Cynthia Zevallos
- Department of Neurology, University of
Iowa Hospitals and Clinics, Iowa City, IA, USA
| | | | - Mohammad Anadani
- Departments of Neurology, Medical
University of South Carolina, Charleston, SC, USA
| | - Eyad Almallouhi
- Departments of Neurology, Medical
University of South Carolina, Charleston, SC, USA
| | - Alejandro M Spiotta
- Departments of Neurosurgery, Medical
University of South Carolina, Charleston, SC, USA
| | - James A Giles
- Department of Neurology, Washington
University School of Medicine in St. Louis, St. Louis, MO, USA
| | - Salah G Keyrouz
- Department of Neurology, Washington
University School of Medicine in St. Louis, St. Louis, MO, USA
| | - Joon-Tae Kim
- Department of Neurology, Chonnam
National University Medical School, Gwangju, South Korea
| | - Ilko L Maier
- Department of Neurology, University
Medical Center Göttingen, Göttingen, Germany
| | - Jan Liman
- Department of Neurology, University
Medical Center Göttingen, Göttingen, Germany
| | - Marios-Nikos Psychogios
- Department of Diagnostic and
Interventional Neuroradiology, University Clinic Basel, Basel, Switzerland
| | | | - Sébastien Richard
- Department of Neurology, University
Hospital of Nancy, Nancy, France
- Centre d’Investigation Clinique
Plurithématique, INSERM U1116, University Hospital of Nancy, Vandoeuvre-lès-Nancy,
France
| | - Benjamin Gory
- Department of Diagnostic and
Therapeutic Neuroradiology, University Hospital of Nancy, Nancy, France
- IADI, INSERM U1254, University of
Lorraine, Nancy, France
| | | | - Patrick A Brown
- Departments of Radiology, Wake Forest
School of Medicine, Winston-Salem, NC, USA
| | - Kyle M Fargen
- Departments of Neurosurgery, Wake
Forest School of Medicine, Winston-Salem, NC, USA
| | - Eva A Mistry
- Department of Neurology and
Rehabilitation Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - Hiba Fakhri
- Department of Neurology, Vanderbilt
University Medical Center, Nashville, TN
| | - Akshitkumar Mistry
- Department of Neurosurgery,
University of Louisville, Louisville, KY, USA
| | - Ka-Ho Wong
- Department of Neurology, University
of Utah School of Medicine, Salt Lake City, UT, USA
| | | | - Peter Kan
- Department of Neurology, Baylor
College of Medicine, Houston, TX, USA
| | - Adam de Havenon
- Department of Neurology, Yale
University School of Medicine, New Haven, CT, USA
| | - Kevin N Sheth
- Department of Neurology, Yale
University School of Medicine, New Haven, CT, USA
| | - Nils H Petersen
- Department of Neurology, Yale
University School of Medicine, New Haven, CT, USA
- Nils H Petersen, Division of Neurocritical
Care and Emergency Neurology, Department of Neurology, Yale Medical School, 15
York Street, LCI 1003, New Haven, CT 06510, USA.
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9
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Jain A, Shivamallu C, Prasad A, Dharmashekhar C. 314P Let’s bring back old drugs to conquer resistance to KRAS G12C inhibitors in NSCLC. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.343] [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] [Indexed: 12/05/2022] Open
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10
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Senarathna J, Kovler M, Prasad A, Bhargava A, Thakor N, Sodhi CP, Hackam DJ, Pathak AP. In vivo phenotyping of the microvasculature in necrotizing enterocolitis with multicontrast optical imaging. Microcirculation 2022; 29:e12768. [PMID: 35593520 PMCID: PMC9633336 DOI: 10.1111/micc.12768] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 02/06/2022] [Accepted: 05/11/2022] [Indexed: 12/30/2022]
Abstract
OBJECTIVE Necrotizing enterocolitis (NEC) is the most prevalent gastrointestinal emergency in premature infants and is characterized by a dysfunctional gut microcirculation. Therefore, there is a dire need for in vivo methods to characterize NEC-induced changes in the structure and function of the gut microcirculation, that is, its vascular phenotype. Since in vivo gut imaging methods are often slow and employ a single-contrast mechanism, we developed a rapid multicontrast imaging technique and a novel analyses pipeline for phenotyping the gut microcirculation. METHODS Using an experimental NEC model, we acquired in vivo images of the gut microvasculature and blood flow over a 5000 × 7000 μm2 field of view at 5 μm resolution via the following two endogenous contrast mechanisms: intrinsic optical signals and laser speckles. Next, we transformed intestinal images into rectilinear "flat maps," and delineated 1A/V gut microvessels and their perfusion territories as "intestinal vascular units" (IVUs). Employing IVUs, we quantified and visualized NEC-induced changes to the gut vascular phenotype. RESULTS In vivo imaging required 60-100 s per animal. Relative to the healthy gut, NEC intestines showed a significant overall decrease (i.e. 64-72%) in perfusion, accompanied by vasoconstriction (i.e. 9-12%) and a reduction in perfusion entropy (19%)within sections of the vascular bed. CONCLUSIONS Multicontrast imaging coupled with IVU-based in vivo vascular phenotyping is a powerful new tool for elucidating NEC pathogenesis.
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Affiliation(s)
- Janaka Senarathna
- Russell H. Morgan Department of Radiology and Radiological ScienceThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Mark Kovler
- Department of Genetic MedicineThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA,Department of SurgeryThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Ayush Prasad
- Department of BiophysicsThe Johns Hopkins UniversityBaltimoreMarylandUSA
| | - Akanksha Bhargava
- Russell H. Morgan Department of Radiology and Radiological ScienceThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Nitish V. Thakor
- Department of Biomedical EngineeringThe Johns Hopkins UniversityBaltimoreMarylandUSA
| | - Chhinder P. Sodhi
- Department of Genetic MedicineThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA,Department of SurgeryThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA,Department of Cell BiologyThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - David J. Hackam
- Department of Genetic MedicineThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA,Department of SurgeryThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA,Department of Cell BiologyThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA
| | - Arvind P. Pathak
- Russell H. Morgan Department of Radiology and Radiological ScienceThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA,Department of Biomedical EngineeringThe Johns Hopkins UniversityBaltimoreMarylandUSA,Department of OncologyThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA,Department of Sidney Kimmel Comprehensive Cancer CenterThe Johns Hopkins University School of MedicineBaltimoreMarylandUSA
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11
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Loftus MJ, Young-Sharma T, Lee SJ, Wati S, Badoordeen GZ, Blakeway LV, Byers S, Cheng AC, Cooper BS, Cottingham H, Jenney A, Hawkey J, Macesic N, Naidu R, Prasad A, Prasad V, Tudravu L, Vakatawa T, van Gorp E, Wisniewski JA, Rafai E, Peleg AY, Stewardson AJ. Attributable Mortality and Excess Length of Stay associated with Third-Generation Cephalosporin Resistant Enterobacterales Bloodstream Infections - a prospective cohort study in Suva, Fiji. J Glob Antimicrob Resist 2022; 30:286-293. [PMID: 35738385 PMCID: PMC9452645 DOI: 10.1016/j.jgar.2022.06.016] [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: 05/23/2022] [Accepted: 06/11/2022] [Indexed: 11/02/2022] Open
Abstract
OBJECTIVES There are scant primary clinical data on antimicrobial resistance (AMR) burden from low- and middle-income countries (LMICs). We adapted recent World Health Organization methodology to measure the impact of third-generation cephalosporin resistance (3GC-R) on mortality and excess length of hospital stay in Fiji. METHODS We conducted a prospective cohort study of inpatients with Enterobacterales bloodstream infections (BSIs) at Colonial War Memorial Hospital, Suva. We used cause-specific Cox proportional hazards models to estimate the effect of 3GC-R on the daily risk (hazard) of in-hospital mortality and being discharged alive (competing risks), and multistate modelling to estimate the excess length of hospital stay. RESULTS From July 2020 to February 2021 we identified 162 consecutive Enterobacterales BSIs, 3GC-R was present in 66 (40.7%). Crude mortality for patients with 3GC-susceptible and 3GC-R BSIs was 16.7% (16/96) and 30.3% (20/66), respectively. 3GC-R was not associated with the in-hospital mortality hazard rate (adjusted hazard ratio (aHR) 1.13, 95% CI 0.51-2.53) or being discharged alive (aHR 0.99, 95% CI 0.65-1.50), whereas Charlson comorbidity index score (aHR 1.62, 95% CI 1.36-1.93) and Pitt bacteraemia score (aHR 3.57, 95% CI 1.31-9.71) were both associated with an increased hazard rate of in-hospital mortality. 3GC-R was associated with an increased length of stay of 2.6 days (95% CI 2.5-2.8). 3GC-R was more common among hospital-associated infections, but genomics did not identify clonal transmission. CONCLUSION Patients with Enterobacterales BSIs in Fiji had high mortality. There were high rates of 3GC-R, which was associated with increased hospital length of stay but not with in-hospital mortality.
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Affiliation(s)
- M J Loftus
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | | | - S J Lee
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - S Wati
- Colonial War Memorial Hospital, Suva, Fiji
| | - G Z Badoordeen
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - L V Blakeway
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - Smh Byers
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - A C Cheng
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia; School of Public Health and Preventive Medicine, Monash University, Melbourne, Australia
| | - B S Cooper
- Centre for Tropical Medicine and Global Health, Nuffield Department of Medicine, University of Oxford, Oxford, The United Kingdom; Mahidol-Oxford Tropical Medicine Research Unit, Mahidol University, Bangkok, Thailand
| | - H Cottingham
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - Awj Jenney
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia; Fiji National University, Suva, Fiji
| | - J Hawkey
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - N Macesic
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia; Centre to Impact AMR, Monash University, Melbourne, Australia
| | - R Naidu
- Colonial War Memorial Hospital, Suva, Fiji
| | - A Prasad
- Colonial War Memorial Hospital, Suva, Fiji
| | - V Prasad
- Colonial War Memorial Hospital, Suva, Fiji
| | - L Tudravu
- Colonial War Memorial Hospital, Suva, Fiji
| | - T Vakatawa
- Colonial War Memorial Hospital, Suva, Fiji
| | - E van Gorp
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - J A Wisniewski
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia
| | - E Rafai
- Fiji Ministry of Health and Medical Services, Suva, Fiji
| | - A Y Peleg
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia; Infection and Immunity Program, Monash Biomedicine Discovery Institute, Department of Microbiology, Monash University, Clayton, Australia.
| | - A J Stewardson
- Department of Infectious Diseases, The Alfred Hospital and Central Clinical School, Monash University, Melbourne, Australia.
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12
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Begunova Y, Bartolome D, Kobsa J, Prasad A, Soto A, Quispe-Orozco D, Farooqui M, Zevallos C, Sansing LH, Schindler JL, De Havenon AH, Matouk C, Sheth KN, Ortega-Gutierrez S, Petersen NH. Abstract 91: Large Vessel Occlusion Stroke Patients With Rapid Early Infarct Progression And Poor Collaterals Are Vulnerable To Blood Pressure Reductions. Stroke 2022. [DOI: 10.1161/str.53.suppl_1.91] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
The precise interactions between collateral perfusion, hemodynamics, and infarct growth after large vessel occlusion (LVO) require further definition. This study examined whether patients with poor collateral circulation and rapid early infarct progression are more vulnerable to reductions in blood pressure (BP).
Methods:
We prospectively enrolled patients with LVO stroke who underwent thrombectomy. Volumes of arterial tissue delay and relative cerebral blood flow (CBF) were estimated with RAPID software; a poor collateral profile was defined by a hypoperfusion intensity ratio >0.4. Early infarct growth rate (EIGR) was defined as ischemic core volume (CBF<30%) divided by the time from symptom onset to imaging. A fast progressor profile was assigned to patients whose EIGR was >10 mL/h. The final infarct growth rate (FIGR) was the quotient of final infarct volume (FIV) and time from symptom onset to reperfusion. BP reduction was measured as the difference between admission mean arterial pressure (MAP) and lowest MAP before reperfusion.
Results:
Fifty-five patients (mean age 69
+
15, mean NIHSS 13) with successful reperfusion (TICI 2B/3) were included in the analysis. The median MAP reduction was 17 (IQR 9, 32). Poor collateral perfusion and EIGR were independent predictors of FIV after adjusting for age and admission NIHSS (mean FIV 70 vs. 31 mL, p=0.012 and 60 vs. 29 mL, p=0.01, respectively). A significant interaction was found between MAP reduction and both collateral status (p=0.04) and progressor profile (p=0.01). For every 10 mmHg MAP reduction, patients with poor collaterals experienced an average increase in FIGR of 3.6 mL/h (Fig. 1A). Above a critical MAP reduction threshold of 30 mmHg, mean FIV was significantly larger in patients with rapidly progressing infarcts (p<0.01, Fig. 1B).
Conclusions:
Patients with poor collaterals and rapid early infarct growth are at higher risk of accelerated infarct growth and larger FIV related to BP reductions.
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13
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Bartolome D, Begunova Y, Prasad A, Soto A, Kobsa J, Top I, Quispe-Orozco D, Farooqui M, Zevallos C, Kim J, Gilmore EJ, Beekman R, de Havenon A, Matouk C, Sheth KN, Ortega-Gutierrez S, Petersen NH. Abstract 89: Nimodipine-induced Blood Pressure Reductions Below Personalized Limits Of Autoregulation Are Associated With Worse Outcomes After Subarachnoid Hemorrhage. Stroke 2022. [DOI: 10.1161/str.53.suppl_1.89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background:
Impairment of cerebral autoregulation after subarachnoid hemorrhage (SAH) makes patients vulnerable to changes in blood pressure (BP). While oral nimodipine is recommended for improving neurological outcomes, its administration is frequently associated with reductions in BP. In this observational study, we examined the effect of nimodipine-induced BP reductions below personalized limits of autoregulation on outcome after aneurysmal SAH.
Methods:
Autoregulatory function was continuously measured by interrogating changes in near-infrared spectroscopy-derived tissue oxygenation (a cerebral blood flow surrogate) in response to changes in mean arterial pressure (MAP). The resulting autoregulatory index was used for trending the BP range at which autoregulation was most preserved. Cerebral hypoperfusion was defined as episodes with at least 30 minutes of MAP reductions below the lower limit of autoregulation (LLA) following nimodipine administration (Fig. 1). Functional outcome was measured with the modified Rankin Scale at 90 days.
Results:
We identified 593 occurrences of nimodipine administration with simultaneous recording of continuous physiologic data for 60 minutes before and after the intervention among 26 SAH patients (mean age 57
+
14, 21 F). Following nimodipine administration, the mean MAP decreased from 103 to 98 mmHg (p<0.001), and the time with MAP below the LLA increased from 9.5 to 21.7% (p<0.001). Moreover, the proportion of episodes with cerebral hypoperfusion was associated with worse 90-day outcomes after adjusting for age and SAH severity (OR for 10% increase 1.5, 95% CI 1.2-2.2, P=0.038).
Conclusions:
Nimodipine-induced BP reductions below the LLA may increase the risk of secondary brain injury and poor functional outcomes. A more personalized treatment approach accounting for cerebral autoregulation status could help identify vulnerable patients and maximize the benefit from current clinical interventions.
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14
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Soto AL, Prasad A, Kobsa J, Bartolome D, Begunova Y, Kodali S, Quispe-Orozco D, Farooqui M, Zevallos C, Sansing LH, Schindler JL, Matouk C, Sheth KN, de Havenon AH, Ortega-Gutierrez S, Petersen NH. Abstract TMP55: Post-stroke Blood Pressure Variability In The Acute Phase Is Associated With Pre-stroke Blood Pressure Variability In Patients Undergoing Mechanical Thrombectomy. Stroke 2022. [DOI: 10.1161/str.53.suppl_1.tmp55] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
High blood pressure variability (BPV) after endovascular thrombectomy is associated with post-stroke complications and poor neurological outcomes. However, whether BPV is an epiphenomenon of the stroke itself or causally related to the outcome remains unknown.
Objective:
In this study we aimed to evaluate if a relationship exists between pre-and post-stroke BPV in patients with large vessel occlusions (LVO).
Methods:
From our prospective stroke registry, we identified patients who had an anterior circulation LVO, underwent EVT, and had at least three blood pressure measurements recorded in the electronic medical record in the six months prior to their stroke admission. All patients had repeated time-stamped blood pressure data recorded for the first 72 hours after thrombectomy. Using the standard deviation of systolic BP, we calculated BPV for each patient and separated patients into tertiles based on their post-EVT BPV. The relationship between pre-stroke BPV and post-EVT BPV was analyzed using an ordinal logistic regression and Spearman’s rank correlation analysis.
Results:
Two hundred fifty-two patients were included in our analysis (mean age 70±16.2 years, mean admission NIHSS 15±7, median pre-stroke BP measurements 14.5 (IQR 5.0-55.8)). Pre-stroke BPV gradually increased for patients with higher post-EVT BPV tertiles (tertile 1 = 13.2(±5.2) mmHg, tertile 2 = 15.0(±5.5) mmHg, tertile 3 = 16.7(±7.0) mmHg, p=0.001). A positive correlation was observed between pre-stroke BPV and post-EVT BPV (p<0.001, R=0.21). After adjusting for age and admission NIHSS, pre-stroke BPV was significantly associated with post-EVT BPV tertile membership (OR 1.37, 95% CI 1.02-1.86, p=0.039).
Conclusion:
High pre-stroke BPV is correlated with high post-EVT BPV. Although larger, prospective studies are needed to provide definitive evidence of this relationship, our work suggests that high post-EVT BPV may be related to an underlying biological phenomenon and not merely a consequence of the stroke itself. Individuals with high BPV may benefit from more intensive blood pressure management in the acute phase after EVT.
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15
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Quispe-Orozco D, Farooqui M, Dajles A, Zevallos C, Mendez-Ruiz A, Kobsa J, Prasad A, Galecio-Castillo M, Vivanco-Suarez J, Bartolome D, Begunova Y, Petersen N, Ortega-Gutierrez S. Abstract WP165: Clinical And Radiological Characteristics Of Exponential And Non-exponential Infarct Growth Patterns In Anterior Circulation Large Vessel Occlusion Stroke. Stroke 2022. [DOI: 10.1161/str.53.suppl_1.wp165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Infarct evolution is a highly dynamic process that varies among individuals. This study aimed to identify clinical and radiological features associated with an exponential infarct growth rate (IGR) pattern in stroke patients with large vessel occlusion (LVO).
Methods:
This is a retrospective cohort study of anterior LVO stroke patients who underwent mechanical thrombectomy (MT) and achieved complete recanalization (mTICI 2c-3). Infarct volumes were calculated at two time points, pre-MT: CT perfusion (CTP) using Rapid software to estimate the CBF<30% volume; and post-MT: using DWI-MRI. Early IGR was defined as CBF<30% (ml) / Time from stroke onset to CTP (hours); and late IGR as [DWI-MRI - CBF<30%] (ml) / Time from CTP to reperfusion (hours). Exponential IGR pattern was established when late IGR was at least three times its respective early IGR. Patients who did not meet this criterion were considered to have a non-exponential IGR. Hypoperfusion intensity ratio 0.4 identified patients with poor collateral status. Good functional outcome was defined as 90-day modified Rankin scale (mRS) 0-2.
Results:
Of the 159 patients (median age 71 [6-82], 45% male, median NIHSS 14 [9-18]) included in the analysis, 91 (57%) patients had an exponential IGR pattern. These patients had higher CT ASPECTS (9[7-10] vs 8[7-9], p=0.038), higher glucose levels (126[114-150] vs 117[106-135], p=0.022), lower Tmax<6.0s (88[55-129] vs 113[81-173, p=0.014]), and higher rate of poor collaterals (31% vs 68%, p<0.001) when compared to patients with a non-exponential IGR pattern. Patients with exponential IGR pattern had lower rates of mTICI 3 (82% vs 96%, p=0.008) but no significant differences in mRS 0-2 at 90 days.
Conclusions:
Parameters associated with exponential infarct growth might help to stratify the most time sensitive vulnerable LVO population in which newer therapeutic and triage strategies should be prioritized.
Fig.
Infarct Growth Rate Plots and Collateral Status
. A
shows IGR with an exponential pattern
. B
shows IGR with a non-exponential pattern.
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16
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McKeown ME, Prasad A, Kobsa J, Top I, Snider SB, Kidwell C, Campbell BCV, Davis SM, Donnan GA, Lev M, Sheth KN, Petersen N, Kimberly WT, Bevers MB. Midline Shift Greater than 3 mm Independently Predicts Outcome After Ischemic Stroke. Neurocrit Care 2022; 36:46-51. [PMID: 34494212 PMCID: PMC8813904 DOI: 10.1007/s12028-021-01341-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [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] [Received: 06/04/2021] [Accepted: 08/24/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND Cerebral edema is associated with worse outcome after acute stroke; however, the minimum clinically relevant threshold remains unknown. This study aimed to identify the minimal degree of midline shift (MLS) that predicts outcome in a cohort encompassing a broad range of patients with acute stroke. METHODS Patient-level data from six acute stroke clinical trials were combined with endovascular thrombectomy registries from two academic referral centers, generating a combined cohort of 1977 patients. MLS was extracted from the original trial data or measured on computed tomography or magnetic resonance imaging that was obtained a median of 47.0 h (interquartile range 27.0-75.1 h) after stroke onset. Logistic regression was performed to identify predictors of poor outcome and the minimal clinically relevant MLS threshold. RESULTS The presence of MLS was a predictor of poor outcome, independent of baseline clinical and demographic factors (adjusted odds ratio 4.46, 95% confidence interval 3.56-5.59, p < 0.001). Examining the full range of MLS values identified, a value of greater than 3 mm was the critical threshold that significantly predicted poor outcome (adjusted odds ratio 3.20 [1.31-7.82], p = 0.011). CONCLUSIONS These results show that the presence of MLS predicts poor outcome and, specifically, MLS value greater than 3 mm is an important threshold across a variety of clinical settings. These findings may have relevance for the design and interpretation of future trials for antiedema therapies.
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Affiliation(s)
- Morgan E McKeown
- Division of Neurocritical Care, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA
| | - Ayush Prasad
- Division of Neurocritical Care and Emergency Neurology, Yale New Haven Hospital, New Haven, CT, USA
| | - Jessica Kobsa
- Division of Neurocritical Care and Emergency Neurology, Yale New Haven Hospital, New Haven, CT, USA
| | - Ilayda Top
- Division of Neurocritical Care and Emergency Neurology, Yale New Haven Hospital, New Haven, CT, USA
| | - Samuel B Snider
- Division of Neurocritical Care, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA
| | - Chelsea Kidwell
- Division of Cerebrovascular Diseases and Stroke, University of Arizona, Tucson, AZ, USA
| | - Bruce C V Campbell
- Department of Medicine and Neurology, Melbourne Brain Center at the Royal Melbourne Hospital, University of Melbourne, Parkville, Australia
| | - Stephen M Davis
- Department of Medicine and Neurology, Melbourne Brain Center at the Royal Melbourne Hospital, University of Melbourne, Parkville, Australia
| | - Geoffrey A Donnan
- Department of Medicine and Neurology, Melbourne Brain Center at the Royal Melbourne Hospital, University of Melbourne, Parkville, Australia
| | - Michael Lev
- Division of Emergency Radiology and Emergency Neuroradiology, Massachusetts General Hospital, Boston, MA, USA
| | - Kevin N Sheth
- Division of Neurocritical Care and Emergency Neurology, Yale New Haven Hospital, New Haven, CT, USA
| | - Nils Petersen
- Division of Neurocritical Care and Emergency Neurology, Yale New Haven Hospital, New Haven, CT, USA
| | - W Taylor Kimberly
- Division of Neurocritical Care, Massachusetts General Hospital, Boston, MA, USA
| | - Matthew B Bevers
- Division of Neurocritical Care, Brigham and Women's Hospital, 75 Francis Street, Boston, MA, 02115, USA.
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Praveenkumar NB, Prasad A, Bindu L, Biju S, Gleeja VL. Amelioration of fly annoyance in dairy cattle by using illuminated fly traps. Journal of Veterinary and Animal Sciences 2022. [DOI: 10.51966/jvas.2022.53.1.13-17] [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: 11/20/2022] Open
Abstract
Blood-sucking and biting flies are a significant source of annoyance to warm-blooded animals. Behavioural changes in animals may include attempts to pursue, remove or avoid the disturbance caused by the fly by means of body movement. In the presesnt study the behaviour during a 10 min period in each four-hour interval i.e. 1 AM, 5 AM, 9 AM, 1 PM, 5 PM and 9 PM was analysed and noted for inclusion in the ethogram. The cows with light trap (treatment) were compared with those without light traps (control) to study the effectivenss of the fly trap in reducing annoyance in cattle. All the seven avaoidance behaviours were counted such as head movement, ear shaking, tail movement, skin twitching, licking, kicking on belly and restlessness and were recorded by scan method. The results of this study indicated that the incidence of all the seven fly avoidance behaviours were significantly higher (p<0.01) in the control group. It could also be concluded that the occurance of all the behaviours in the control group at 1 PM were significantly high followed by 5 PM. The findings of the study suggest that fly activity in dairy farms was high during the afternoon hours followed by evening time and illuminated fly traps could be used effectively in controlling flies, so that the fly avoidance behavior by cattle was reduced on dairy farms.
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Naveena T, Sarangi LN, Rana SK, Prasad A, Prabha TS, Jhansi D, Ponnanna NM, Sharma GK. Seroprevalence to common infectious abortifacient and infertility causing agents in the dairy herds of India. Iran J Vet Res 2022; 23:189-195. [PMID: 36425611 PMCID: PMC9681985 DOI: 10.22099/ijvr.2022.42574.6184] [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] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 04/04/2022] [Accepted: 05/23/2022] [Indexed: 06/16/2023]
Abstract
BACKGROUND Information on the prevalence of infectious agents in dairy farms forms the basis for formulating a suitable control strategy; especially in endemic situations. AIMS A cross-sectional study was undertaken to determine the prevalence of six economically important bovine diseases, causing reproductive disorders including bovine abortion in organized dairy herds in India. METHODS A total of 1,075 animals (cattle and buffaloes) from 09 dairy farms were screened by ELISA tests. RESULTS Bovine viral diarrhoea (BVD) was the most prevalent (56.5%) disease followed by infectious bovine rhinotracheitis (IBR) (45.4%). Prevalence of Q-fever (5.4%) and neosporosis (6.1%) were less on the farms. Although 16.3% of the samples turned positive for brucellosis, the contribution of calf-hood vaccination (B. abortus S19 vaccine) to the prevalence of antibodies cannot be ruled out. The overall prevalence of bovine anaplasmosis, known to cause sporadic abortions in dairy herds, was 34.1% in the 9 farms with a prevalence of less than 20% in 5 farms. Infection of multiple abortifacient (seroprevalence to more than two pathogens) was recorded in 56.8% of animals. A very strong association was observed between BVD and brucellosis (Odds ratio 14.2; P<0.001). Further, a positive association was also seen between seroprevalence of IBR and anaplasmosis, and neosporosis and Q fever (P<0.05). CONCLUSION Viral diseases were found to be more common in the dairy herds than bacterial and protozoan diseases. Increased susceptibility of IBR seropositive cows to other bacterial and viral infections was observed.
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Affiliation(s)
- T. Naveena
- MSc in Microbiology, Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - L. N. Sarangi
- Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - S. K. Rana
- Group of Animal Health, National Dairy Development Board, Anand 388001, Gujarat, India
| | - A. Prasad
- MVSc in Veterinary Microbiology, Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - T. S. Prabha
- MSc in Biotechnology, Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - D. Jhansi
- MTech in Biotechnology, Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - N. M. Ponnanna
- Group of Animal Health, National Dairy Development Board Research and Development Laboratory, IIL Campus, Gachibowli, Hyderabad 500032, Telangana, India
| | - G. K. Sharma
- MVSc in Veterinary Microbiology, Group of Animal Health, National Dairy Development Board, Anand 388001, Gujarat, India
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Hosure S, Rajeev TS, Jiji RS, George PR, Prasad A, Gleeja VL. Effectiveness of livestock delivery services of dairy cooperatives of Kerala state. Journal of Veterinary and Animal Sciences 2022. [DOI: 10.51966/jvas.2022.53.3.340-347] [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: 11/05/2022] Open
Abstract
The present study aimed to know the effectiveness of livestock services delivered by the veterinarians working under state regional cooperative milk producers’ union (SRCMPU) and farmers views on these services. An ex-post-facto research design was adopted for the study. A total of fifteen veterinarians working under SRCMPU, Kerala, and thirty livestock farmers dependent on SRCMPU for the livestock services were selected. Data collection was done through using structured interview schedule method. The result from the study revealed that majority of the veterinarians and livestock farmers perceived curative services (60.00% and 46.66%), production services (53.33% and 63.33%), preventive services (53.34% and 56.66%), extension services (60.00% and 50.00%) and miscellaneous services (60.00% and 60.00%) as average. About satisfaction level, majority of the livestock farmers had medium level of satisfaction towards curative services (66.66%), production services (43.33%), preventive services (60.00%), extension services (50.00%) and miscellaneous services (60.00%). It is concluded from the result that there is need to improve the quality of livestock services from both veterinarians and farmers point of view. It is the need of hour to analyze and interpret the current scenario of service delivery systems of state regional cooperative milk producers’ union through assessing the constraints perceived by them in livestock service delivery.
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20
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Erotocritou M, Prasad A, Burns S, Haddo O, Bartlett W, Mavroveli S, Hanna S, Berber O. 458 Patient Willingness to Undergo Elective Orthopaedic Surgery in Relation to the COVID-19 Outbreak. Br J Surg 2021. [PMCID: PMC8135673 DOI: 10.1093/bjs/znab135.036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective To determine patients’ willingness to undergo elective orthopaedic surgery during the COVID-19 pandemic. Method 4 groups of patients were chosen based on type of surgery. A telephone survey was conducted, including questions on diagnosis, symptom duration, pain severity, co-morbidities, anxiety levels for COVID-19 and surgery. Patients were given the conditions for surgery and asked whether they would undergo surgery, have the operation carried out by another consultant and any factors that would increase their confidence. Results Of 200 patients, 156 participated (78%). 78.2% were willing to undergo surgery. There was a statistically significant difference in willingness between age groups 40-49 (100%) and 80 + (58.3%). Differences in willingness between surgery types, BOA risk class, sex, symptom duration and pain scores, were not statistically significant. Patients unwilling to undergo surgery reported statistically higher anxiety scores for health (4.39) and surgery (4.62) compared to the willing group (2.89 and 2.71 respectively). Patients’ main concern was contracting COVID (35.2%). Conclusions Our study demonstrated that the majority of patients were willing to undergo surgery. This can be used to inform strategies for resuming elective surgeries. It has also highlighted several areas in patient perception that warrant further investigation and the importance of enhanced consent on the specific risks.
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Affiliation(s)
- M Erotocritou
- Whittington Health NHS Trust, London, United Kingdom
| | - A Prasad
- Whittington Health NHS Trust, London, United Kingdom
| | - S Burns
- Whittington Health NHS Trust, London, United Kingdom
| | - O Haddo
- Whittington Health NHS Trust, London, United Kingdom
| | - W Bartlett
- Whittington Health NHS Trust, London, United Kingdom
| | - S Mavroveli
- Imperial College London, London, United Kingdom
| | - S Hanna
- Royal London NHS Trust, London, United Kingdom
| | - O Berber
- Whittington Health NHS Trust, London, United Kingdom
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Quispe-Orozco D, Sequeiros JM, Zevallos C, Farooqui M, Nguyen CK, Peshwe K, Dajles A, Mendez Ruiz A, Kobsa J, Prasad A, Kodali S, Petersen NH, Ortega-Gutierrez S. Abstract P520: Infarct Growth Rate is an Independent Predictor of Poor Outcome and Mortality After Mechanical Thrombectomy With Successful Reperfusion. Stroke 2021. [DOI: 10.1161/str.52.suppl_1.p520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Despite treatment with mechanical thrombectomy (MT), some patients fail to regain functional independence at 90 days. The growth of the ischemic core varies across patients, and likely reflects differences in collateral flow and ischemic tolerance. In this study, we sought establish the optimal infarct growth rate (IGR) threshold to differentiate between slow and fast progressors and assess its ability to predict poor outcome.
Methods:
We retrospectively identified patients with anterior large-vessel occlusion (LVO) stroke with successful MT (mTICI ≥ 2b) at two comprehensive stroke centers. Final infarct volume (FIV) was calculated from post-MT Diffusion-weighted MRI. Assuming relative stability of the FIV after successful reperfusion, we defined IGR as [FIV (ml)] / [Time from stroke onset to reperfusion (hours)]. Good clinical outcome was defined as a modified Rankin scale score (mRS) ≤2. We used Receiver Operating Characteristics (ROC) analysis to calculate the optimal IGR threshold with high specificity for predicting a poor outcome. Multivariate logistic regression analysis was performed to evaluate the association of fast progressors (IGR ≥ 7.14 ml/h) on the poor functional outcome and mortality.
Results:
Of the 212 patients (age 68 ± 15, 51% female, NIHSS 15 ± 7) included, 110 (51.8%) patients had a poor outcome. The median IGR was significantly higher in patients with poor compared to good outcome (7 ml/h vs. 3.1 ml/h, p<0.001). An IGR ≥ 7.14 ml/h showed a sensitivity of 0.49 and a specificity of 0.7 to predict a poor outcome with an area under the ROC curve of 0.65 (95% CI, 0.58-0.73). IGR ≥ 7.14 ml/h was an independent predictor of poor outcome (OR 2.2, 95% CI 1.1-4.6, p=0.036) and mortality (OR 4.2, 95% CI 1.8-10.6, p=0.001) after adjusting for age, sex, atrial fibrillation, NIHSS and ASPECTS. Ordinal regression showed that the odds of having better outcomes decrease 60% in fast progressors (OR 0.40, 95% CI: 0.22-0.70, p=0.001) after adjusting for age, sex, atrial fibrillation, NIHSS, and ASPECTS.
Conclusions:
IGR is an independent predictor of poor outcome and mortality in patients with successful MT. Early identification of this population might help to institute therapeutic strategies of accelerating reperfusion and slowing the IGR.
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22
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Quispe-Orozco D, Zevallos C, Farooqui M, Dajles A, Nguyen CK, Peshwe K, Mendez Ruiz A, Kobsa J, Prasad A, Kodali S, Petersen NH, Ortega-Gutierrez S. Abstract P472: Characterization of Infarct Growth Rate Patterns in Patients With Large-Vessel Occlusion Stroke Undergoing Mechanical Thrombectomy. Stroke 2021. [DOI: 10.1161/str.52.suppl_1.p472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Infarct growth is affected by the collateral blood supply and ischemic tolerance and thus unlikely linear. This study aimed to better characterize infarct growth rates (IGR) after large-vessel occlusion (LVO) stroke.
Methods:
We retrospectively identified patients with anterior LVO stroke who underwent mechanical thrombectomy (MT) at two comprehensive stroke centers. Core infarct volumes at presentation (CBF<30%) were estimated using RAPID software. Final infarct volume (FIV) was measured on post-MT MRI. We estimated IGR during two intervals: IGR 1 defined as CBF<30% (ml) / Time from onset to CTP (hours); and IGR 2 as [FIV - CBF<30% (ml)] / Time from CTP to reperfusion (hours). To calculate IGR 2, we only analyzed patients with successful MT (mTICI ≥ 2b) assuming no significant infarct growth after reperfusion. Functional outcome was assessed using the modified Rankin scale (mRS) at 90 days. We performed the Receiver-operating characteristic (ROC) analysis for each interval to best classify patients into slow and fast progressors.
Results:
Of the 361 patients (age 68 ± 15, 55% female, NIHSS 14 ± 6) included in the analysis, 282 (78.1%) had successful reperfusion, and 150 (41.6%) achieved a good outcome (mRS ≤2). IGR showed an exponential growth pattern (Figure 1). There was no significant difference in the median IGR 1 between the poor and good outcome groups (2.3 vs. 1 ml, p=0.061). The median IGR 2 in patients with poor outcome was significantly higher when compared to those in the good outcome group (IGR 14.1ml/h vs. 4.62ml/h, p<0.0001). IGR 2 ≥ 12.2ml/h had a sensitivity of 0.56 and a specificity of 0.77 (AUC 0.67) for predicting poor outcome.
Conclusions:
We identified an exponential infarct growth pattern after LVO stroke that differs in relation to outcome. High IGR in the interval from CTP to reperfusion is associated with worse outcomes, emphasizing the importance of future research into therapeutic approaches to slow down infarct progression.
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Kobsa J, Prasad A, Soto A, Kodali S, Nguyen CK, Peshwe K, Quispe-Orozco D, Farooqui M, Zeballos C, Sansing LH, Schindler JL, Matouk C, Sheth KN, Ortega-Gutierrez S, Petersen NH. Abstract MP35: Blood Pressure Reductions Before Arrival at a Thrombectomy-Capable Hospital Are Associated With Neurologic Worsening in Patients With Large-Vessel Occlusion. Stroke 2021. [DOI: 10.1161/str.52.suppl_1.mp35] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Decreases in blood pressure (BP) during thrombectomy are associated with infarct progression and worse outcomes. Many patients present first to a primary stroke center (PSC) and are later transferred to a comprehensive stroke center (CSC) to undergo thrombectomy. During this period, important BP variations might occur. We evaluated the association of BP reductions with neurological worsening and functional outcomes.
Methods:
We prospectively collected hemodynamic, clinical, and radiographic data on consecutive patients with LVO ischemic stroke who were transferred from a PSC for possible thrombectomy between 2018 and 2020. We assessed systolic BP (SBP) and mean arterial pressure (MAP) at five time points: earliest recorded, average pre-PSC, PSC admission, average PSC, and CSC admission. We measured neurologic worsening as a change in NIHSS (ΔNIHSS) from PSC to CSC >3 and functional outcome using the modified Rankin Scale (mRS) at discharge and 90 days. Relationships between variables of interest were evaluated using linear regression.
Results:
Of 91 patients (mean age 70±16 years, mean NIHSS 12) included, 13 (14%) experienced early neurologic deterioration (ΔNIHSS>3), and 34 (37%) achieved a good outcome at discharge (mRS<3). We found that patients with good outcome had significantly lower SBP at all five assessed time points compared to patients with poor outcome (Figure 1, p<0.05). Percent change in MAP from initial presentation to CSC arrival was independently associated with ΔNIHSS after adjusting for age, sex, and transfer time (p=0.03, β=0.27).
Conclusions:
Patients with poor outcomes have higher BP throughout the pre-CSC period, possibly reflecting an augmented hypertensive response. Reductions in SBP and MAP before arrival at the CSC are associated with neurologic worsening. These results suggest that BP management strategies in the pre-CSC period to avoid large reductions in BP may improve outcomes in patients affected by LVO stroke.
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Peshwe KU, Nguyen CK, Kodali S, Kobsa J, Prasad A, Soto A, Wira CR, Matouk C, Sheth KN, Petersen NH. Abstract MP36: Blood Pressure Reductions in the Hyperacute Phase of Large Vessel Occlusion Ischemic Stroke Are Associated With Infarct Progression and Poor Functional Outcome. Stroke 2021. [DOI: 10.1161/str.52.suppl_1.mp36] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Decreases in blood pressure (BP) during endovascular therapy (EVT) have been associated with infarct progression and worse outcome after large vessel occlusion (LVO) stroke. However, BP trajectories in the hyperacute phase prior to EVT have not been well characterized. We used high-frequency BP and hemodynamic monitoring to study the timing of BP reductions during the hyperacute period of stroke and evaluated their relation to infarct progression and functional outcome.
Methods:
We prospectively enrolled patients with anterior circulation LVO stroke undergoing EVT. BP and cardiac hemodynamic variables were recorded every 20 seconds from ER admission until the end of EVT using non-invasive finger plethysmography. Patients underwent initial CT perfusion imaging and a follow-up MRI at 24 hours to calculate infarct growth. The following hemodynamic parameters were defined as exposure variables: the difference between admission MAP and lowest MAP (ΔMAP), MAP drop> 20% from admission, MAP<70 mmHg, and SBP<140 mmHg. Functional outcome was measured with the modified Rankin Scale (mRS) at 90 days. Core associations between BP reductions and outcomes were studied using linear regression and logistic regression models.
Results:
45 patients underwent continuous BP monitoring (age 72±17; 58% female; NIHSS 13±6). Aggregated time series data revealed a marked BP reduction around the time of imaging from which patients recovered (mean SBP 33 mmHg, duration 18 min). A sustained decrease in BP was observed after groin puncture without return to baseline BP levels. A linear regression analysis revealed a 13ml infarct growth for every 10 mmHg reduction in ΔMAP (p=0.054). Patients were divided into two groups based on median ΔMAP = 29. Those with ΔMAP ≤29 had better functional outcome at 90 days (34.78% vs. 9.09%, p = 0.038).
Conclusion:
Marked and frequently iatrogenic BP reductions occur around the time of initial imaging and may present a potential target for therapeutic intervention. Decrease in blood pressure before reperfusion may increase the risk of infarct progression and poor functional outcome. Changes in cardiac hemodynamic variables throughout the acute stroke period suggest a potential role for fluid resuscitation for hemodynamic optimization.
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Prasad A, Kobsa J, Kodali S, Nguyen CK, Quispe Orozco D, Farooqui M, Zevallos C, Ortega S, Anadani M, Almallouhi E, Giles JA, Spiotta AM, Kim JT, Maier I, Psychogios M, Liman J, Riou-Comte N, Richard S, Gory B, Wolfe S, Brown PA, Fargen K, Mistry E, Fakhri H, Mistry A, Wong KH, De Havenon AH, Nascimento F, Kan P, Sheth KN, Petersen NH. Abstract MP33: Association Between Neurologic Outcomes and Temporal Profile of Systolic Blood Pressure Variability After Endovascular Thrombectomy. Stroke 2021. [DOI: 10.1161/str.52.suppl_1.mp33] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Introduction:
Higher systolic blood pressure variability (BPV) after endovascular thrombectomy (EVT) has been associated with an increased risk of hemorrhagic transformation and worse functional outcomes. However, the time-varying behavior of BPV after EVT and its effects on functional outcome have not been well characterized.
Methods:
We analyzed data from an international cohort of patients with acute large-vessel occlusion stroke who underwent EVT at 11 centers across North America, Europe, and Asia. Repeated time-stamped blood pressure data were recorded for the first 72 hours after thrombectomy. Parameters of BPV were calculated in 12-hour epochs using five established methodologies: standard deviation (SD), coefficient of variation (CV), average real variability (ARV), successive variation (SV), and residual SD (rSD). Patients’ overall mean BPV was then used to assign patients into tertiles for regression analysis: low BPV, intermediate BPV, and high BPV. Functional outcome was measured with the modified Rankin Scale (mRS) at 90 days.
Results:
Of the 1,791 patients (age 69 ± 14, NIHSS 15 ± 6) included in our analysis, 1,085 (60.6%) had a poor 90-day outcome (mRS >3). Patients with poor outcome had significantly higher systolic BPV (p<0.05) measured as standard deviation (SBP SD) at each epoch (Figure 1B). Compared to patients with low BPV, those in the highest tertile group had significantly greater odds of a poor functional outcome after adjusting for age, sex, hypertension, NIHSS, ASPECT, tPA, time to reperfusion, and TICI score (OR 1.5; 95% CI 1.2-2; p=0.001). Patients in the highest tertile of BPV demonstrated time-dependent variability with the highest SBP SD during the first 24 hours after thrombectomy (Figure 1A).
Conclusions:
Higher BPV measured by SBP SD appears to be associated with poor 90-day outcome in EVT-treated stroke patients. Early treatment strategies targeting early high BPV warrant further prospective investigation.
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Affiliation(s)
- Ayush Prasad
- Div of Neurocritical Care and Emergency Neurology, Yale Univ Sch of Medicine, New Haven, CT
| | | | | | | | | | | | | | | | | | | | - James A Giles
- Dept of Neurology, Washington Univ Sch of Medicine, St. Louis, MO
| | | | | | | | | | | | | | | | | | | | | | | | - Eva Mistry
- Vanderbilt Univ Med Cente, Nashville, TN
| | | | | | | | | | | | - Peter Kan
- Baylor College of Medicine, Houston, TX
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Agarwal A, Prasad A, Rustogi R, Mishra S. Detection and mitigation of fraudulent resource consumption attacks in cloud using deep learning approach. Journal of Information Security and Applications 2021. [DOI: 10.1016/j.jisa.2020.102672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Ullas S, Pradeep M, Surendran S, Ravikumar A, Bastine AM, Prasad A, Mohan A. Telemedicine During the COVID-19 Pandemic: A Paradigm Shift in Non-Communicable Disease Management? - A Cross-Sectional Survey from a Quaternary-Care Center in South India. Patient Prefer Adherence 2021; 15:2715-2723. [PMID: 34916781 PMCID: PMC8667749 DOI: 10.2147/ppa.s332636] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 11/09/2021] [Indexed: 12/23/2022] Open
Abstract
PURPOSE This study aims to gauge the perception and adoption rates of telemedicine amongst patients with non-communicable diseases (NCD) as opposed to in-person consultations in a quaternary care center in South India. PATIENTS AND METHODS A web-hosted 21-item cross-sectional survey was distributed to 220 randomly selected patients with a routine appointment in one of the seven departments caring for NCDs in the study center. Descriptive analysis and inferential analyses were done. Paired samples T-test and Pearson's Chi-square test were used study associations. RESULTS In-person consultations decreased by 1.9±4.47 visits per year, in 2020 vs 2019. Most participants reported "fear of COVID-19" as the primary reason for this decline. Participants also reported that their consultation times had significantly decreased (OR=6.43, 95% CI=1.7-24.08, p=0.006). The decreased consultations time, difficulty in obtaining in-person appointments, along with the reduced physical examination during consultations have made participants more open to the idea of teleconsultations (OR=3.88, 95% CI=1.21-12.47, p=0.022). Eighty-five (38.63%) participants had already adopted telemedicine for their routine consultations during the pandemic. Whilst participants felt that telemedicine was an adequate surrogate for in-person consultations, a significant difficulty in obtaining medications was noted (OR=6, 95% CI=1.34-26.81, p=0.019). CONCLUSION In-person consultations were decreased primarily due to the perception of significant risk of COVID-19 exposure in the present scenario. Telemedicine adoption in the private sector may be sustainable throughout the pandemic and beyond, if patients are offered to continue their routine consultations with their regular doctors and ensured medicine availability. Integration of telemedicine by the public and private health sector of India into routine NCD care delivery is the need of the hour, but further studies are required to estimate the effectiveness of the systems.
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Affiliation(s)
- Sisira Ullas
- Amrita School of Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India
| | - Manu Pradeep
- Department of Pharmacology, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India
- Correspondence: Manu Pradeep Department of Pharmacology, Amrita Institute of Medical Sciences, Ponekkara, P.O Kochi, Kerala, 682041, IndiaTel +91 9947568919 Email
| | - Sandeep Surendran
- Department of Rheumatology, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India
| | - Anjali Ravikumar
- Department of General Surgery, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India
| | - Anna Maria Bastine
- Amrita School of Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India
| | - Ayush Prasad
- Amrita School of Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India
| | - Aravind Mohan
- Amrita School of Medicine, Amrita Institute of Medical Sciences, Amrita Vishwa Vidyapeetham, Kochi, Kerala, India
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Jisha N, Girish Varma G, Gleeja V, Prasad A, Beena V, Karthiayini K, Sejian V. Annual temperature profile of Thrissur: a climate change perspective. J Vet Anim Sci 2021. [DOI: 10.51966/jvas.2021.52.1.26-31] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Bihaqi SJ, Allaie IM, Banday MAA, Sankar M, Wani ZA, Prasad A. Multiple anthelmintic resistance in gastrointestinal nematodes of Caprines on Mountain Research Centre for Sheep and Goat at Kashmir Valley, India. Parasite Epidemiol Control 2020; 11:e00163. [PMID: 32984565 PMCID: PMC7494505 DOI: 10.1016/j.parepi.2020.e00163] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Revised: 05/03/2020] [Accepted: 06/23/2020] [Indexed: 11/12/2022] Open
Abstract
The study was conducted to evaluate the status of anthelmintic resistance in Gastro-Intestinal Nematodes (GINs) of goats at an organized farm located in Kashmir, as there is no report of resistance against these parasites of goats from this temperate region, although it has been reported worldwide including India. Caprines reared at this farm exhibited reduced efficacy to multiple anthelmintics following treatments with Fenbendazole (FBZ), Closantel and Ivermectin (IVM) in Faecal Egg Count Reduction Test (FECRT). The results suggested that the overall efficacy was highest for IVM at 83.5% and 90.0% on 7th and 14th day post-treatment, respectively and least for FBZ at 44.3% and 62.5%, respectively, whereas the corresponding figures for closantel were 68.3% and 86.2%, respectively. The pre-treatment faecal culture revealed Haemonchus contortus, Teladorsagia circumcincta and Trichostrongylus colubriformis as predominant strongyles, however, in post-treatment samples, only H. contortus was observed. Further, the infective larvae were subjected to Allele specific PCR (AS-PCR) for accurate diagnosis of BZ resistance. The AS-PCR revealed 52% of H. contortus were homozygous resistant (rr) and 17% were heterozygous (rS) on day “0” before treatment and 100% homozygous resistant (rr) on 7th day post treatment. In both T. colubriformis and T. circumcincta, 100% population was homozygous susceptible (SS) at day “0” before treatment. The overall frequency of resistant (r) allele for H. contortus was 60.5% and for susceptible allele (s) was 39.5%. For T. colubriformis and T. circumcincta the frequency of susceptible allele (s) was 100%. The survey indicated that the GINs of goats on the farm have developed multiple anthelmintic resistance to FBZ, closantel and IVM and the condition is alarming in the farm. Moreover surveillance studies about status of anthelmintic resistance in other farms (Govternment as well as Private) of Kashmir valley should be carried out at large scale to develop effective and sustainable control strategies against GI Nematodes.
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Affiliation(s)
- S J Bihaqi
- Division of Veterinary Parasitology, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shuhama Campus, Alusteng, Srinagar, Kashmir-190006, J&K, India
| | - I M Allaie
- Division of Veterinary Parasitology, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shuhama Campus, Alusteng, Srinagar, Kashmir-190006, J&K, India
| | - M A A Banday
- Division of Veterinary Parasitology, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shuhama Campus, Alusteng, Srinagar, Kashmir-190006, J&K, India
| | - M Sankar
- Division of Parasitology, Indian Veterinary Research Institute, Izzatnagar, Bareilly-243122, UP, India
| | - Z A Wani
- Division of Veterinary Parasitology, Faculty of Veterinary Sciences & Animal Husbandry, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Shuhama Campus, Alusteng, Srinagar, Kashmir-190006, J&K, India
| | - A Prasad
- Division of Temperate Animal Husbandry, Regional Research Station of Indian Veterinary Research Institute, Mukteswar, Nainital-263138, Uttarakhand, India
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Senarathna J, Prasad A, Bhargava A, Pathak A. HemoSYS: An Image‐based Toolkit for Quantifying Hemodynamics in the Microcirculation. FASEB J 2020. [DOI: 10.1096/fasebj.2020.34.s1.05910] [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: 11/11/2022]
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Arora M, Prasad A, Kulshreshtha R, Baijal A. Significance of third trimester ultrasound in detecting congenital abnormalities of kidney and urinary tract-a prospective study. J Pediatr Urol 2019; 15:334-340. [PMID: 31031163 DOI: 10.1016/j.jpurol.2019.03.027] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 02/13/2019] [Accepted: 03/29/2019] [Indexed: 11/16/2022]
Abstract
INTRODUCTION Antenatal hydronephrosis is defined as dilatation of the renal pelvis with or without dilatation of calyces in the developing fetus. Although second trimester scan is more sensitive in detecting congenital abnormalities of kidney and urinary tract (CAKUT), it has been suggested that the third trimester scan is more predictive of postnatal outcome. OBJECTIVES This study aims to determine the incidence of antenatal hydronephrosis at our institution and the significance of third trimester scan in detecting CAKUT postnatally. STUDY DESIGN It is a prospective observational study. During the 3-year study period from June 2013 to May 2016, all cases of antenatal hydronephrosis, defined as renal pelvic diameter (RPD) ≥4 mm in the second trimester and ≥7 mm in the third trimester scan, diagnosed in the fetal medicine unit of our hospital, were included and were followed up postnatally for 6 months. RESULTS In the fetal medicine unit, 32,443 women were screened for anomalies, and hydronephrosis was detected in 269 cases. Incidence of antenatal hydronephrosis was observed to be 0.83% in our institution. In second trimester scan, of 80 cases with the left hydronephrosis, only 22 (27.5%) had postnatal CAKUT and of 70 cases with the right hydronephrosis, 18 (25.7%) had CAKUT. In the third trimester scan, it was observed that with RPD >10 mm, on the left side hydronephrosis, 87% had CAKUT on postnatal scan, and 85% with the right hydronephrosis had CAKUT. CONCLUSION Sixty percent cases of hydronephrosis detected in the second trimester scan resolve in utero. In the third trimester scan with RPD <10 mm, the possibility of postnatal CAKUT is 23%, whereas if RPD is > 10 mm, then the possibility of postnatal CAKUT is 86%.
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Affiliation(s)
- M Arora
- Pediatric Surgery, Sir Ganga Ram Hospital, New Delhi, India
| | - A Prasad
- Department of Pediatric Surgery, Sir Ganga Ram Hospital, New Delhi, India.
| | - R Kulshreshtha
- Department of Pediatric Surgery, Sir Ganga Ram Hospital, New Delhi, India
| | - A Baijal
- Department of Fetal Medicine, Sir Ganga Ram Hospital, New Delhi, India
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Mukherjee F, Bahekar VS, Pasha SY, Kannan P, Prasad A, Rana SK, Kanani AN, Sharma GK, Premalatha D, Srinivasan VA. Isolation and analysis of the molecular epidemiology and zoonotic significance of Mycobacterium tuberculosis in domestic and wildlife ruminants from three states in India. REV SCI TECH OIE 2019; 37:999-1012. [PMID: 30964453 DOI: 10.20506/rst.37.3.2902] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The majority of tuberculosis cases in ruminants are caused by Mycobacterium bovis (MB). However, in this study, the authors reported the isolation of Mycobacterium tuberculosis (MT) from bovine milk, nasal swabs and post-mortem tissue samples (n = 841) collected from cattle and buffaloes in the states of Telangana, Maharashtra and Gujarat in India in the period from 2010 to 2015. The isolates (n = 7) were confirmed as Mycobacterium due to their growth characteristics and colony morphology in a commercial liquid medium Mycobacterial Growth Indicator Tube (MGIT)™ employing the BD BACTEC™ MGIT™ 960 system and the Löwenstein-Jensen (LJ) medium supplemented with glycerol but not with sodium pyruvate, and BD-DIFCO™ Middlebrook 7H10 agar containing oleic albumin dextrose catalase (OADC). These isolates were initially identified as members of the M. tuberculosis complex (MTC) using a commercial nested polymerase chain reaction (PCR) kit based on the IS6110 MTC specific nucleotide sequence. The isolates were confirmed as MT using three commercial line probe assay kits, were further genotyped, and the spoligotypes identified were of East African Indian (EAI) 3_IND, EAI5, Central-Asian (CAS) 1_DELHI, U and T1 lineages. Two MT isolates from one antelope (Antilope cervipara) andone gazelle (Gazella bennettii) from Gujarat, which were identified previously, were spoligotyped during this study and identified as belonging to EAI3_IND and EAI5 lineages, respectively. The epidemiological significance and zoonotic implications of regional presence and documentation of the same or two differents poligotypes in different species within the family Bovidae as well as humans is discussed.
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Walters S, Prasad A, Guevel B, Sarraf KM, Achan P, Dawson-Bowling S, Millington S, Hanna SA. Systematic review of the outcome of cemented versus uncemented total hip arthroplasty following pelvic irradiation. Musculoskelet Surg 2019; 103:221-230. [PMID: 30937859 DOI: 10.1007/s12306-019-00597-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 08/04/2018] [Accepted: 02/08/2019] [Indexed: 10/27/2022]
Abstract
PURPOSE The objective of this study is to evaluate the outcomes of total hip arthroplasty (THA) in patients with radiation-related changes to the bone, and specifically whether there is a difference in outcomes between cemented and uncemented acetabular components. METHODS A database search was performed to identify available studies reporting adults undergoing THA who have previously had pelvic irradiation. Data were extracted and analysed with respect to the use of cemented versus uncemented acetabular components. Statistical analysis was performed using the Chi-square test for independence. RESULTS The all-cause revision rate was 24% in the cemented THA group (27/111), compared with 15% of uncemented THAs (22/143) (p = 0.073). Revision for acetabular aseptic loosening occurred in 16% of cases (18/111) in the cemented group and 10% (15/143) in the uncemented group (p = 0.178). Acetabular aseptic loosening was reported in 24% of cemented THAs (27/111) and 14% of uncemented THAs (20/143), which was statistically significant (p = 0.035). Not all of these went on to have revision THA. The Incidence of prosthetic joint infection was similar in both groups. CONCLUSION Overall outcomes appear to be better for uncemented THAs in post-radiotherapy patients, with a significantly lower rate of aseptic loosening and an appreciable (but not statistically significant) reduction in revision rate. The best outcomes seem to be associated with the use of acetabular reinforcement across both cemented and uncemented groups, but further work is needed to evaluate this.
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Affiliation(s)
- S Walters
- Health Education England, London, UK
| | - A Prasad
- Imperial College London, London, UK
| | - B Guevel
- Health Education England, London, UK
| | - K M Sarraf
- Imperial Healthcare NHS Trust, London, UK
| | - P Achan
- Barts Health NHS Trust, London, UK
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Prasad A, Brehm C, Goldenberg M, Ghodsizad A, Koerner M, Banayosy AE, Singbartl K. Assessing Left Ventricular Unloading and Wall Tension to Predict the Need for Durable Mechanical Circulatory Support after Peripheral VA-ECMO. J Heart Lung Transplant 2019. [DOI: 10.1016/j.healun.2019.01.416] [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] [Indexed: 11/29/2022] Open
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Singer AJ, Prasad A, Thode Jr HC. 449 Differences in Patient and Burn Characteristics between the National Burn Registry and the Healthcare Cost and Utilization Project. J Burn Care Res 2019. [DOI: 10.1093/jbcr/irz013.345] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
| | - A Prasad
- Stony Brook University, Stony Brook, NY
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Nehra AK, Gowane GR, Kuriyal A, Chaurasiya A, Kumar R, Bhinsara DB, Parthasarathi BC, Bhawana K, Khare RK, Prasad A, Chandra D, Sankar M. Immune response against subclinical haemonchosis in Himalayan hill goats. Vet Parasitol 2019; 267:47-53. [PMID: 30878085 DOI: 10.1016/j.vetpar.2019.01.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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: 05/24/2018] [Revised: 01/12/2019] [Accepted: 01/18/2019] [Indexed: 01/07/2023]
Abstract
Haemonchosis commonly occurs as chronic and subclinical infection in small ruminants, and understanding of immunological response against subclinical haemonchosis is of paramount importance for designing and implementing effective control strategies. The present study was designed to evaluate immunological response during subclinical haemonchosis, experimentally established in goats. Sixteen 5-6 month-old helminth naive kids were randomly allocated into one of two groups, infected and uninfected; the infected group being infected per os with 250 Haemonchus contortus larvae per kg body weight. Faecal, blood and serum samples were collected every third day up to 30 days post-infection (DPI), thereafter weekly up to 58 DPI to record changes in faecal egg count (FEC), haemoglobin (Hb), packed cell volume (PCV), peripheral eosinophil percentage and immunological parameters, such as macrophage cytokine interleukin-12 (IL-12), Th1 cytokine (IFN-γ), Th2 cytokines (IL-4, 13, 25, 33) and immunoglobulins (IgG and IgE). Pre-patent period of H. contortus in the present study was 18 days and eggs per gram (EPG) peaked on 30 DPI. The total reduction in body weight gain in the infected group was 26 g per day when compared with uninfected animals. Hb (7.35 ± 0.34 g/dL in infected animals compared with 9.76 ± 0.67 in control animals) and PCV levels (22 ± 1.54 g/dL in infected animals compared with 29.2 ± 1.27 in control animals) decreased significantly up to 44 DPI in infected group (P = 0.000). IL-4, IL-13, IL-33, IgG and IgE showed significant increase in infected animals at different periods. IFN-γ, IL-12 and IL-25 did not show any significant changes barring a steep rise of IFN-γ on 27 DPI. A positive correlation was observed between IgE and IL-4 in subclinical haemonchosis. Of particular note was that all the major cytokines, such as IFN-γ (P = 0.000), IL-4 (P = 0.000), IL-13 (P = 0.009), and both IgG (P = 0.000) and IgE (P = 0.003), were observed at the lowest concentration on 24 DPI. The effect of infection was found to be significant on cytokines with a strong interaction with time. Taken together, the data suggest that Th2 immune response is predominating in subclinical haemonchosis. The economic loss in term of body weight gain due to subclinical haemonchosis was considerable.
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Affiliation(s)
- A K Nehra
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - G R Gowane
- ICAR-Central Sheep and Wool Research Institute, Avikanagar, India
| | - A Kuriyal
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - A Chaurasiya
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - R Kumar
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - D B Bhinsara
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - B C Parthasarathi
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - K Bhawana
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - R K Khare
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India
| | - A Prasad
- Division of Parasitology, Indian Veterinary Research Institute, Izatnagar Campus, India
| | - D Chandra
- Division of Parasitology, Indian Veterinary Research Institute, Izatnagar Campus, India
| | - M Sankar
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteswar Campus, India.
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Abdul-Wahab T, Betancourt J, Hassan F, Al. Thani S, Choueiri H, Jain N, Malanga G, Murrell W, Prasad A, Verborgt O. Initial treatment of complete rotator cuff tear and transition to surgical treatment: systematic review of the evidence. Muscles Ligaments Tendons J 2019. [DOI: 10.32098/mltj.01.2016.05] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
| | | | - F. Hassan
- Orthocure Medical Center, United Arab Emirates University, Dubai, United Arab Emirates
| | - S. Al. Thani
- Orthocure Medical Center, United Arab Emirates University, Dubai, United Arab Emirates
| | - H. Choueiri
- Physioart Centre, Dubai, United Arab Emirates
| | - N.B. Jain
- Vanderbilt University School of Medicine, Nashville, USA
| | | | - W.D. Murrell
- Department of Orthopaedic Sports Medicine, Dr. Humeira Badsha Medical Center, Dubai, United Arab Emirates, and Department of Orthopaedics, Rehabilitation, and Pediatry, Ft. Belvoir Community Hospital, Ft. Belvoir, Virginia, USA
| | - A. Prasad
- Osteopathic Health Centre, Dubai, United Arab Emirates
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Deitel M, Rheinwalt KP, Musella M, Weiner R, Kular KS, Peraglia C, Prasad A, Luciani RC, Sakran N, Plamper A. Comment on: Acid and non-acid gastroesophageal reflux after single anastomosis gastric bypass. Surg Obes Relat Dis 2018; 14:1419-1420. [PMID: 30268322 DOI: 10.1016/j.soard.2018.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- M Deitel
- SFASMBS, CRCSC Director MGB-OAGB Club, Toronto, Canada.
| | | | - M Musella
- Advanced Biomedical Sciences Department, "Federico II" University, Naples, Italy
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Marcus JL, Hurley LB, Prasad A, Zaroff J, Klein DB, Horberg MA, Go AS, DeLorenze GN, Quesenberry CP, Sidney S, Lo JC, Silverberg MJ. Recurrence after hospitalization for acute coronary syndrome among HIV-infected and HIV-uninfected individuals. HIV Med 2018; 20:19-26. [PMID: 30178911 DOI: 10.1111/hiv.12670] [Citation(s) in RCA: 3] [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] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/18/2018] [Indexed: 01/28/2023]
Abstract
OBJECTIVES We evaluated the association of HIV infection and immunodeficiency with acute coronary syndrome (ACS) recurrence, and with all-cause mortality as a secondary outcome, after hospitalization for ACS among HIV-infected and HIV-uninfected individuals. METHODS We conducted a retrospective cohort study within Kaiser Permanente Northern California of HIV-infected and HIV-uninfected adults discharged after ACS hospitalization [types: ST-elevation myocardial infarction (STEMI), non-STEMI, or unstable angina] during 1996-2010. We compared the outcomes of ACS recurrence and all-cause mortality within 3 years, both overall by HIV status and stratified by recent CD4 count, with HIV-uninfected individuals as the reference group. Hazard ratios (HRs) were obtained from Cox regression models with adjustment for age, sex, race/ethnicity, year, ACS type, smoking, and cardiovascular risk factors. RESULTS Among 226 HIV-infected and 86 321 HIV-uninfected individuals with ACS, HIV-infected individuals had a similar risk of ACS recurrence compared with HIV-uninfected individuals [HR 1.08; 95% confidence interval (CI) 0.76-1.54]. HIV infection was independently associated with all-cause mortality after ACS hospitalization overall (HR 2.52; 95% CI 1.81-3.52). In CD4-stratified models, post-ACS mortality was higher for HIV-infected individuals with CD4 counts of 201-499 cells/μL (HR 2.64; 95% CI 1.66-4.20) and < 200 cells/μL (HR 5.41; 95% CI 3.14-9.34), but not those with CD4 counts ≥ 500 cells/μL (HR 0.67; 95% CI 0.22-2.08), compared with HIV-uninfected individuals (P trend < 0.001). CONCLUSIONS HIV infection and immunodeficiency were not associated with recurrence of ACS after hospitalization. All-cause mortality was higher among HIV-infected compared with HIV-uninfected individuals, but there was no excess mortality risk among HIV-infected individuals with high CD4 counts.
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Affiliation(s)
- J L Marcus
- Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA
| | - L B Hurley
- Kaiser Permanente Division of Research, Oakland, CA
| | - A Prasad
- Kaiser Permanente San Francisco Medical Center, San Francisco, CA
| | - J Zaroff
- Kaiser Permanente San Francisco Medical Center, San Francisco, CA
| | - D B Klein
- Kaiser Permanente San Leandro Medical Center, San Leandro, CA
| | - M A Horberg
- Kaiser Permanente Mid-Atlantic Permanente Research Institute, Rockville, MD, USA
| | - A S Go
- Kaiser Permanente Division of Research, Oakland, CA
| | | | | | - S Sidney
- Kaiser Permanente Division of Research, Oakland, CA
| | - J C Lo
- Kaiser Permanente Division of Research, Oakland, CA
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Chauhan S, Khan SA, Prasad A. Irradiation-Induced Compositional Effects on Human Bone After Extracorporeal Therapy for Bone Sarcoma. Calcif Tissue Int 2018; 103:175-188. [PMID: 29500623 DOI: 10.1007/s00223-018-0408-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Accepted: 02/26/2018] [Indexed: 12/19/2022]
Abstract
The present study investigates Raman scattering of human bone irradiated with 50 Gy single dose during therapeutic treatment of Ewing and Osteosarcoma. Bone quality was evaluated via mineral-to-matrix ratio, degree of crystallinity, change in amount of calcium, and carbonate substitution. Alteration in collagen and its cross-links was quantified through second-derivative deconvolution of Amide I peak. A dose of 50 Gy radiation leads to almost 50% loss of mineral content, while maintaining mineral crystallinity, and small changes in carbonate substitution. Deconvolution of Amide I suggested modifications in collagen structure via increase in amount of enzymatic trivalent cross-linking (p < 0.05). Overall irradiation led to detrimental effect on bone quality via changes in its composition, consequently reducing its elastic modulus with increased plasticity. The study thus quantifies effect of single-dose 50 Gy radiation on human bone, which in turn is necessary for designing improved radiation dosage during ECRT and for better understanding post-operative care.
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Affiliation(s)
- S Chauhan
- Applied Mechanics, Indian Institute of Technology, Delhi, India.
- Mechanical Engineering, GBPUAT, Pant Nagar, India.
| | - S A Khan
- Orthopedics, All India Institute of Medical Sciences, New Delhi, India
| | - A Prasad
- Applied Mechanics, Indian Institute of Technology, Delhi, India
- Mechanical Engineering, South Dakota State University, Brookings, USA
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Prasad A, Lancini D, Guppy-Coles K, Atherton J, Thomas L, Prasad S. Prognostic Value of Left Atrial Function Following Myocardial Infarction. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.497] [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] [Indexed: 10/28/2022]
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Shrestha R, Ranjit A, Prasad A, Kulshrestha R. Outcome Analysis of Neonates following Laparotomy for Acute Abdomen: A Prospective Study. Kathmandu Univ Med J (KUMJ) 2018; 16:35-38. [PMID: 30631014] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Background Low and middle-income countries (LMIC) bear the majority of the global pediatric surgical burden. Despite increasing volume of pediatric surgeries being performed in LMIC, outcomes of these surgeries in low and middle-income countries remain unknown due to lack of robust data. Objective The objective of our study was to collect data on and evaluate neonatal surgical outcomes at a tertiary level center in India. Method The surgical outcomes data of all neonates undergoing laparotomy between February 15, 2015 and October 14, 2015, at Sir Ganga Ram Hospital, New Delhi, India was collected prospectively. Descriptive statistics were used to determine the rates of various postoperative outcomes. Result A total of 37 neonatal surgeries were performed during the study period. The mean age of the neonates on the day of surgery was 7 days (range: 1-30 days). Most of the neonates (72.9%, n=27) were males. About 40% (n=15) of the neonates were preterm and 15 (40.5%) of them were small for gestational age. In our study, 10 neonates (28.6%) needed ventilation for 48 hours or less after surgery and 5 neonates (13.5%) were kept Nil per Oral (NPO) postoperatively for more than 10 days. Out of 37 neonates, 4 (10.80%) developed a surgical site infection and 8 neonates (21.6%) had postoperative sepsis. The in-hospital mortality rate among neonates undergoing laparotomy during the study period was 8.1 deaths per 100 neonates. Conclusion Co-ordination of care among pediatric surgeons, neonatologists, nursing and anesthesia team is required for optimal surgical outcome.
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Affiliation(s)
- R Shrestha
- Department of Surgery, Nepal Medical College and Teaching Hospital, Kathmandu, Nepal
| | - A Ranjit
- Center For Surgery And Public Health, Boston, Brigham And Women's Hospital, Boston, USA
| | - A Prasad
- Sir Ganga Ram Hospital, Department of Pediatric Surgery, New Delhi, India
| | - R Kulshrestha
- Sir Ganga Ram Hospital, Department of Pediatric Surgery, New Delhi, India
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Prasad A, Lancini D, Guppy-Coles K, Atherton J, Thomas L, Prasad S. Predictors of New-Onset Atrial Fibrillation Following Myocardial Infarction. Heart Lung Circ 2018. [DOI: 10.1016/j.hlc.2018.06.492] [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] [Indexed: 11/27/2022]
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Arora N, Tripathi S, Kumar P, Mondal P, Mishra A, Prasad A. Recent advancements and new perspectives in animal models for Neurocysticercosis immunopathogenesis. Parasite Immunol 2017; 39. [PMID: 28467600 DOI: 10.1111/pim.12439] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [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: 03/22/2016] [Accepted: 04/25/2017] [Indexed: 02/06/2023]
Abstract
Neurocysticercosis (NCC), one of the most common parasitic diseases of the central nervous system, is caused by Taenia solium. This parasite involves two hosts, intermediate hosts (pig and human) and a definitive host (human) and has various stages in its complex life cycle (eggs, oncosphere, cysticerci and adult tapeworm). Hence, developing an animal model for T. solium that mimics its natural course of infection is quite challenging. We have reviewed here the animal models frequently used to study immunopathogenesis of cysticercosis and also discussed their usefulness for NCC studies. We found that researchers have used mice, rats, guinea pigs, dogs, cats and pigs as models for this disease with varying degrees of success. Mice and rats models have been utilized extensively for immunopathogenesis studies due to their relative ease of handling and abundance of commercially available reagents to study these small animal models. These models have provided some very exciting results for in-depth understanding of the disease. Of late, the experimentally/naturally infected swine model is turning out to be the best animal model as the disease progression closely resembles human infection in pigs. However, handling large experimental animals has its own challenges and limitations.
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Affiliation(s)
- N Arora
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - S Tripathi
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India.,Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - P Kumar
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - P Mondal
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
| | - A Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Jodhpur, India
| | - A Prasad
- School of Basic Sciences, Indian Institute of Technology Mandi, Mandi, India
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Van Der Schee M, Dickson J, Ruparel M, Janes S, Dragonieri S, Fuller L, Grundy S, Baldwin D, Crosbie P, Prasad A, Haris M, Barlow A, Calvert L, Wight A, Bennett J, Gaga M, Chee S, Conteh V, Ledson M, Hodkinson C, Boschmans J, Smith R, Parris R, Apthorp D, Kitchen S, Allsworth M, Boyle B, Rintoul R. P3.05-001 Breath Analysis for Early Detection of Lung Cancer: The LuCID Study. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1672] [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] [Indexed: 11/25/2022]
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Spinthakis N, Farag M, Gorog D, Mahmood H, Prasad A, Srinivasan M. P1378Percutaneous coronary intervention with drug-eluting stent versus coronary artery bypass grafting: a meta-analysis of patients with left main coronary artery disease. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1378] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Mowforth J, Steiner H, Prasad A. P101 Structured Holistic Nursing Assessment (HNA) in Buckinghamshire Healthcare Trust (BHT) for lung cancer & mesothelioma patients: process and findings. Thorax 2016. [DOI: 10.1136/thoraxjnl-2016-209333.244] [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] [Indexed: 11/04/2022]
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Latchumikanthan A, Prasad A, Sankar M, Pavan Kumar P, Jithin MV, Aravind M. Polymerase chain reaction (PCR) based amplification of hmcp3 and hmcp6 cysteine protease genes of Haemonchus contortus from small ruminants. J Parasit Dis 2016; 40:1313-1316. [PMID: 27876938 DOI: 10.1007/s12639-015-0679-8] [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: 02/20/2015] [Accepted: 03/10/2015] [Indexed: 11/27/2022] Open
Abstract
Haemonchus contortus is a haematophagous nematode in small ruminants population and causes anaemia, weakness and mortality especially in young animals. In the present study, hmcp3 partial gene of 836 bp and hmcp6 full length gene of 1041 bp were amplified from the cDNA of Bareilly isolate of adult male H. contortus by polymerase chain reaction. Further gene characterization and expression studies are warranted to know the immunoprophylactic potential of hmcp3 and hmcp6 proteins of H. contortus.
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Affiliation(s)
- A Latchumikanthan
- Division of Veterinary Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122 UP India
| | - A Prasad
- Division of Veterinary Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122 UP India
| | - M Sankar
- Division of Temperate Animal Husbandry, Indian Veterinary Research Institute, Mukteshwar, Nainital, 263 138 Uttarakhand India
| | - Pesingi Pavan Kumar
- Division of Veterinary Public Health, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122 UP India
| | - M V Jithin
- Division of Veterinary Medicine, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122 UP India
| | - M Aravind
- Division of Veterinary Parasitology, Indian Veterinary Research Institute, Izatnagar, Bareilly, 243 122 UP India
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Prasad A. A rare case of thorachoschisis with gastroschisis – A case report. J ANAT SOC INDIA 2016. [DOI: 10.1016/j.jasi.2016.08.434] [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] [Indexed: 11/25/2022]
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Abstract
It is widely perceived that competition in the Indian banking sector has increased since the inception of the financial sector reforms in 1992. Using annual data on scheduled commercial banks for the period 1996–2004, the article evaluates the validity of this proposition in the Indian context. The empirical evidence reveals that Indian banks earn revenues as if under monopolistic competition.
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Affiliation(s)
- A. Prasad
- A. Prasad is Advisor to Executive Director for India, International Monetary Fund
| | - Saibal Ghosh
- Saibal Ghosh is Assistant Adviser, Department of Economic Analysis, Reserve Bank of India, Mumbai
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