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1152 citation(s) found for "Todd, A".

Cost-Effectiveness of Anterior and Posterior Surgical Approaches for Cervical Spondylotic Myelopathy: An Economic Evaluation of a Randomized Clinical Trial
Whitmore, Robert G. , Miranda, Stephen P. , Bydon, Mohamad , Dholakia, Ruchita, Moriarty, James P. , Borah, Bijan J. , Kanter, Adam S., Mummaneni, Praveen V. , Bisson, Erica F. , Harrop, James S., Magge, Subu N., Heary, Robert F., Fehlings, Michael G. , Albert, Todd J. , Arnold, Paul M., Riew, Kiehyun Daniel , Steinmetz, Michael P., Benzel, Edward, Wang, Marjorie C., Heller, John G., Ghogawala, Zoher

Mayo Clinic

Neurosurgery | November 3, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1227/neu.0000000000004268 | PMID 42975416 Get It

BACKGROUND AND OBJECTIVES: Surgery for cervical spondylotic myelopathy improves quality of life but remains expensive. We conducted a cost-effectiveness analysis of patients treated with anterior cervical diskectomy/fusion (ACDF), posterior cervical decompression/fusion (PCDF), and laminoplasty (LP) in the Cervical Spondylotic Myelopathy Surgical (CSM-S) Trial, a randomized trial comparing surgical approaches for cervical spondylotic myelopathy. METHODS: In the trial, patients were randomized (2:3) to anterior (ACDF) or posterior surgery (LP or PCDF, at surgeon's discretion). A cost-effectiveness analysis was performed from a societal perspective with a 1-year time horizon, including only US patients as-treated. Cumulative costs were estimated using patient data on utilization and lost productivity using a human capital approach. Direct costs were calculated using 2022 Medicare rates for professional fees and cost-to-charge ratios for hospital services. Quality-adjusted life-years (QALYs) were calculated from patient responses to the EuroQol-5-Dimensions instrument at baseline and 3, 6, and 12 months postoperatively. Incremental cost-effectiveness ratio analysis was performed with bootstrapping to address uncertainty. RESULTS: Of 163 total patients enrolled in the CSM-S Trial, 153 from the United States (mean age, 62 years; 80 (52%) female) were included as-treated (ACDF = 61, PCDF = 64, LP = 28) in a cost-effectiveness analysis. Economic data were not available for 9 patients. The remaining 144 patients treated (ACDF = 55, PCDF = 61, LP = 28) had cost data through a 1-year follow-up. Mean hospitalization costs were higher after PCDF than ACDF and LP ($33 410 vs $26 468 vs $25 550; P < .001). Mean total costs were higher after PCDF than ACDF and LP ($62 383 vs $53 074 vs $47 426; P = .017). LP yielded greater QALY gains than ACDF (0.792 vs 0.732; P = .08) and PCDF (0.792 vs 0.698; P = .01). At a willingness-to-pay threshold of $150 000/QALY-gained, the probability that LP was cost-effective compared with PCDF was 99.7% and the probability compared with ACDF was 96%. CONCLUSION: In the CSM-S Trial, LP yielded greater 1-year quality-of-life improvements at lower costs than PCDF and ACDF.
Brain network functional connectivity alterations associated with acute posttraumatic headache
Nikolova, Simona , Chong, Catherine D , Porreca, Frank , Dumkrieger, Gina , Starling, Amaal, Schwedt, Todd J

Mayo Clinic

Headache: The Journal of Head and Face Pain | November 3, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1111/head.70231 | PMID 42974698 Get It

Abstract Objectives/Background To investigate disruptions in resting state networks in participants with acute posttraumatic headache (PTH) due to mild traumatic brain injury (mTBI). Neuroimaging studies have demonstrated alterations in functional connectivity (FC) within core resting‐state networks in participants with headache versus healthy controls (HCs), which may provide insights into disease mechanisms; however, the extent to which these alterations relate to PTH remains incompletely understood. Methods In this comparative cross‐sectional study with an embedded prospective cohort, participants with acute PTH and HCs were enrolled from the Mayo Clinic Arizona and Minnesota, and the Phoenix Veterans Affairs Health Care between 2020 and 2024. Participants with PTH underwent resting‐state magnetic resonance imaging within 2 months following mTBI. We investigated differences within and between functional brain networks in participants with PTH compared to HCs. Associations between altered FC with headache frequency, alterations of mood, post‐mTBI symptoms, and concussion history were determined and corrected for age and sex. Relationships between PTH outcomes at 3 months and baseline FC were investigated. Results Ninety‐six participants with acute PTH (35 male, 61 female) and 84 age‐balanced HCs were included. Decreased resting state network connectivity in participants with PTH compared to HCs (False Discovery Rate (FDR) corrected <0.05) was observed in two default mode network (DMN) regions encompassing the bilateral frontal and anterior cingulate cortex (ACC), as well as the left postcentral gyrus. Within those DMN regions, exploratory analyses revealed that FC was positively associated with headache frequency in the bilateral ACC, right precuneus and frontal gyrus, and with trait anxiety in the right ACC. In contrast, negative associations were observed between FC and number of mTBIs, as well as state anxiety, in the left ACC (uncorrected, p <0.05). No significant associations with clinical headache variables were observed in the DMN comprising the left postcentral gyrus. Baseline group differences in network connectivity between recovered and nonrecovered participants were found in visual, sensorimotor, default mode, executive control and salience networks. Alterations in baseline connectivity between independent components in recovered and nonrecovered participants were not statistically significant after corrections for multiple comparisons. Conclusion In participants with PTH, the DMN regions showing decreased connectivity also exhibited associations with headache frequency, state and trait anxiety, and number of lifetime mTBIs, suggesting that these changes relate to the severity and persistence of post‐mTBI symptoms. The baseline differences in network connectivity between recovered and nonrecovered participants were not statistically significant after corrections for multiple comparisons, indicating that baseline network connections may not play a significant role in the recovery process.
Clinical and preclinical investigation of the mechanism promoting aura in post-traumatic headache and inhibition of pain-related behavior in mice by onabotulinumtoxinA
Bader, Colin, Haskie, Kaitlyn E., Li, Guohui, Vizin, Robson Cristiano Lillo , Chong, Catherine, Dumkrieger, Gina, Koprusinski, Caroline, Dodick, David W., Navratilova, Edita , Porreca, Frank, Schwedt, Todd J. , Anderson, Trent , Dumkrieger, Gina , Dodick, David W. , Porreca, Frank

Mayo Clinic

Pain | September 23, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1097/j.pain.0000000000004098 | PMID 42775980 Get It

Abstract Post-traumatic headache (PTH) is the most common consequence of mild traumatic brain injury (mTBI) and often resembles migraine. In 20% to 30% of migraine patients, headaches are preceded by aura, transient visual or sensory disturbances, which are caused by cortical spreading depression (CSD) that can induce headache pain. However, whether mTBI promotes the development of aura and CSD and their possible contributions to PTH remains unclear. We examined the incidence of new-onset aura in individuals with PTH who had no history of aura. Thirty-two percent (35/108) developed new aura symptoms within 60 days of injury, suggesting that mTBI can sensitize the cortex to the induction of CSD. To test this, we combined electrophysiology, neuroimaging, and behavioral assays in a mouse model of mTBI-induced PTH. After closed-head mTBI, injured mice exhibited a 160% increase in CSD induction probability (ie, lowered threshold) and became sensitized to CSD induction by brief exposure to stress, a common headache trigger. When evoked optogenetically, CSD produced prolonged periorbital and hind paw allodynia, consistent with headache-like pain. Subcutaneous onabotulinumtoxinA administered to the scalp after mTBI did not alter CSD susceptibility but completely abolished optogenetic CSD-induced allodynia. These findings suggest that mTBI elicits sensitization to CSD induction and promotes the emergence of aura in humans, likely contributing to PTH. It is important that, even after mTBI-induced sensitization, onabotulinumtoxinA decoupled CSD from pain behaviors, suggesting efficacy in treating PTH associated with aura.
Associations of Active and Passive Smoke Exposure and Hidradenitis Suppurativa in the Pediatric Population: A Case–Control Study
Ziebart, Rachel, Numani, Asfia , Todd, Austin, Alavi, Afsáneh , Davis, Dawn M., Mohandesi, Nessa Aghazadeh, Alavi, A , Davis, Dawn Marie R. , Aghazadeh, Nessa

Mayo Clinic

Pediatric Dermatology | September 9, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1111/pde.70101 | PMID 42713636 Get It

ABSTRACT Background Hidradenitis suppurativa (HS) is an inflammatory condition associated with cysts of the folliculopilosebaceous unit primarily affecting intertriginous areas. HS has been correlated with smoke exposure in the adult population, but there is a knowledge gap in understanding its effect in pediatric and adolescent patients. This study assesses correlations between active and passive smoke exposure and the development of HS in the pediatric and adolescent population. Methods A retrospective case–control study was conducted at Mayo Clinic (2010–2023) of patients diagnosed with HS before the age of 18 years who were age‐, sex‐, and race‐matched to healthy controls in a 1:3 ratio, analyzed using Fisher exact for categorical variables and Kruskal–Wallis for continuous. Results One hundred and seventy‐four cases and 522 controls met inclusion criteria. The prevalence of active and passive smoke exposure was significantly higher in patients with HS compared to controls ( p = 0.001), with passive smoke accounting for 64.6% ( N = 31/48) of smoke exposure in patients with HS. Smoke exposure was associated with a significant increase in the odds of an HS diagnosis, with an odds ratio of 4.8 (95% CI: 3.06–7.61) for passive and/or active exposure, and 1.64 (95% CI: 1.01–2.61) for passive exposure alone. Smoke exposure was associated with a later age of diagnosis than those with no smoke exposure ( p < 0.001). Conclusion Prevalence of active and passive smoke exposure was higher in pediatric and adolescent patients with HS compared to age, sex, and race‐matched healthy controls. Smoke exposure increased the odds of having HS and was associated with a later age at diagnosis.
Stroke in non-bacterial thrombotic endocarditis: a patient-level systematic review of clinical characteristics, management, and outcomes
Aljabali, Ahmed, Alhayali, Deema, Taylor-Wedge, Hallie, Laffaye, Todd, Al-Ahmed, Majd, Harahsheh, Ayham, Alamoush, Mohammed, Dweik, Khaled, Osundiji, Mayowa A., Mbonde, Amir, O’Carroll, Cumara B. , Harahsheh, Ehab, Laffaye, Todd A, Aljabali, Ahmed S. , Alhayali, Deema M, Taylor, Hallie, Laffaye, T. , Mbonde, Amir A. , Demaerschalk, Bart M. , Harahsheh, Ehab

Mayo Clinic

Frontiers in Stroke | August 14, 2026 | Volume: 5 | Issue: No issue available | Pages: No page available

10.3389/fstro.2026.1915602 | PMID 42666192 Get It

Background and Purpose Stroke is a frequent manifestation of non-bacterial thrombotic endocarditis (NBTE), yet current knowledge largely stems from case reports and small case series. This systematic review summarizes stroke presentation, imaging features, management, and outcomes in patients with NBTE-related stroke. Methods We conducted a patient-level systematic review of published case reports and case series. PubMed, MEDLINE, Embase, Web of Science, and PsycINFO were searched from inception through August 2025 for studies reporting individual patients with NBTE-related stroke. Extracted data included demographics, vascular risk factors, stroke presentation, imaging features, NBTE etiology, treatment (unfractionated heparin/low-molecular-weight heparin [UFH/LMWH], vitamin K antagonists [VKA], direct oral anticoagulants [DOACs], and/or valvular surgery), and outcomes. Multivariable regression was used to explore factors associated with recurrent stroke and mortality. Results We included 236 patients with NBTE and stroke from 218 studies (median age 56 years [IQR: 43–63], 63% female). Left hemispheric stroke syndromes predominated among clinical presentations (27%), and multi-vessel territory ischemic infarcts (&gt;2 territories) were observed in 65%. Conventional vascular risk factors were infrequent (0%−21%), whereas deep vein thrombosis (43%) and systemic embolism (41%) frequently preceded or coincided with stroke onset. Malignancy (70%) and autoimmune disease (25%) were the main NBTE etiologies. Anticoagulation was initiated in 70%, and 21% underwent valvular surgery. Over a median follow-up of 2.0 months, stroke recurred in 43% and death occurred in 49% of patients. Malignant etiology (aOR 10.3, P &lt; 0.001) and metastases (aOR 3.9, P &lt; 0.001) were associated with increased mortality, while VKA use (aOR 0.08, P &lt; 0.001) and autoimmune etiology (aOR 0.1, P &lt; 0.001) were associated with lower mortality. Malignancy (aOR 2.8, P &lt; 0.001) and DOAC use (aOR 5.2, P = 0.012) were associated with increased risk of recurrent stroke. Conclusion NBTE should be considered in stroke patients lacking conventional vascular risk factors, particularly those with malignancy or autoimmune disease. Malignancy and DOAC use were associated with higher recurrent stroke risk, while VKA use was associated with lower mortality; however, these anticoagulant-class findings should be considered hypothesis-generating and interpreted cautiously given the case-report evidence base, small treatment subgroups, potential confounding, and limited follow-up. What this study adds By synthesizing patient-level data from published case reports and case series, this review provides a stroke-focused characterization of NBTE, including clinical presentation, infarct topography, underlying etiologies, management strategies, recurrent cerebrovascular events, and mortality. The findings highlight multifocal infarction, malignancy-associated NBTE, and recurrent stroke despite anticoagulation as key clinical concerns, while emphasizing that observed associations with anticoagulant class should be viewed as hypothesis-generating rather than definitive treatment guidance
Liver Point-of-Care Ultrasound (POCUS): Roadmap for training, credentialing, and implementation
Debes, Jose D., Gougol, Amir , Kim, W. Ray, Debes, José D. , Kono, Yuko , Dolinger, Michael Todd

Mayo Clinic

Hepatology Communications | August 11, 2026 | Volume: 10 | Issue: 9 | Pages: No page available

10.1097/hc9.0000000000001016 | PMID 42579772 Get It

Point-of-care ultrasound (POCUS) offers unique, real-time advantages for assessing liver disease, benefiting both health care providers and patients. It has been shown to enhance patient care and satisfaction across a variety of medical specialties. Although liver POCUS is practiced widely in many parts of the world, its use in the United States remains limited. Liver POCUS enables rapid assessment of specific hepatic conditions, including both vascular and parenchymal abnormalities, and can play a key role in timely management decision-making—such as guiding the use of diuretics or volume expanders. Once liver POCUS is established, ultrasonography-enabled procedures, such as procedure guidance and shear wave elastography, may be adopted and enrich the practice of hepatology in the future. This paper serves as a summary of the American Association for the Study of Liver Diseases' (AASLD) current position on liver POCUS, offering proposed imaging protocols, recommendations for training and credentialing, and practical guidelines for implementation in clinical settings.
Endoscopic Ultrasound-Guided Gallbladder Drainage
Baron, Todd H., Umar, Shifa, Lam, Gregory, Pannala, Rahul , Amateau, Stuart, Tielleman, Thomas, Khodorskiy, Dmitriy O., Companioni, Rafael Ching, Bedi, Gurneet, Torres, Ricardo Marrero, Chudy‐Onwugaje, Kenechukwu, Bhogal, Neil, Gelrud, Andrés , Gabr, Moamen, Shin, Eun Ji, Adler, Douglas G., Irani, Shayan , Kushnir, Vladimir, Sachdev, Mankanwal S., Sharma, Neil, Tyberg, Amy , Widmer, Jessica, Widmer, Jessica L , Canakis, Andrew , Baron, Todd H. , Amateau, Stuart K. , Tielleman, Thomas , Companioni, Rafael A. Ching, Chudy‐Onwugaje, Kenechukwu , Gabr, Moamen , Shin, Eun Ji , Adler, Douglas G. , Kushnir, Vladimir , Sachdev, Mankanwal S. , Sharma, Neil

Mayo Clinic

Journal of Clinical Gastroenterology | July 23, 2026 | Volume: 60 | Issue: 8 | Pages: 685-694

10.1097/mcg.0000000000002409 | PMID 42490390 Get It

Acute cholecystitis affects ∼200,000 individuals annually in the United States, with laparoscopic cholecystectomy as the gold standard treatment. However, in high-risk surgical candidates, alternative drainage methods are necessary. Percutaneous transhepatic gallbladder drainage (PT-GBD) has traditionally served as the primary alternative intervention, offering rapid decompression, but is limited by a negative impact on the patient’s quality of life, the risk of long-term or even permanent tube placement, adverse events, and high recurrence rates. Endoscopic approaches, such as endoscopic transpapillary gallbladder drainage (ET-GBD) and, more recently, endoscopic ultrasound-guided gallbladder drainage (EUS-GBD), have emerged as viable alternatives to PT-GBD. EUS-GBD, first introduced in 2007, offers technical and clinical outcomes comparable to PT-GBD with fewer adverse events, shorter hospital stays, and lower rates of recurrence. The introduction of lumen-apposing metal stents (LAMS) has revolutionized EUS-GBD, simplifying deployment and enabling subsequent internal gallbladder access, which allows additional interventions such as cholecystoscopy and stone removal. EUS-GBD is now supported by international guidelines, and 1 device has achieved FDA approval for the management of acute cholecystitis in nonsurgical candidates. Proper patient selection is essential, guided by multidisciplinary evaluation, with EUS-GBD contraindicated in specific scenarios such as gallbladder perforation, coagulopathy, and large-volume ascites. Technical considerations include choice of access site (transgastric versus transduodenal), stent type, and procedural route [direct (freehand) or wire-guided]. Postprocedural care and stent management remain variable and nonstandardized. Emerging data suggest that interval cholecystectomy can still be performed safely after EUS-GBD. As adoption of EUS-GBD with LAMS expands, structured training and standardization of practice are crucial to optimizing outcomes.
Development of a shared patient registry for measles exposure management amongst multiple stakeholder groups
Olson, Alyssa, Barth, Jean, Rasmusson, Jenna, Kriewall, Nicole, Kudrna, Cory, Sheley, Todd, Kramer, Tyler, Buckmeier, Jason, OHoro, John, Rasmusson, Jenna, Kriewall, Nicole E, Buckmeier, Jason R., O’Horo, John C.

Mayo Clinic

Antimicrobial Stewardship & Healthcare Epidemiology | July 17, 2026 | Volume: 6 | Issue: S1 | Pages: s189-s189

10.1017/ash.2026.10735 Get It

Background: We had a large-scale measles exposure event affecting 626 patients. Management of exposed patients was urgent, involving quarantine, post-exposure prophylaxis (PEP), and symptom monitoring on a case-by-case basis. Cases were initially tracked and managed using a combination of multiple spreadsheets amongst stakeholders as well as lists within the electronic health record (EHR). Using shared spreadsheets and lists created significant challenges with maintaining and editing multiple copies and updating workbooks simultaneously. Methods: Infection Prevention and Control (IPAC) worked with primary care personnel and EHR developers to create a shared registry that would prioritize communication and follow-up for exposed patients based on age and immunity. Patients are initially added to the shared registry within the EHR by reviewing non-registry reports and tagging patients, identified using exposure timeframes that overlapped with the index measles cases, in a manner that transferred them to the shared registry. From this registry, measles, mumps, and rubella vaccine status can be confirmed, immune status can be identified, and criteria for PEP assigned. High-risk patients are then contacted with recommendations from IPAC and primary care. Communication and follow-up are tracked directly within the shared registry to ensure appropriate patient management. The exposure management registry is further leveraged throughout the measles outbreak timeframe by allowing real-time monitoring of patients that require additional precautions or guidance related to their exposure. Result: The shared registry enhanced documentation accuracy and transparency between stakeholders. It led to availability of real-time status of exposed patients for the duration of the measles outbreak timeframe. Overall, the registry enabled time-sensitive patient communication to all exposed patients and rapid identification of those who needed PEP. Communication could happen rapidly and seamlessly between care teams within the organization, and the necessary information could be shared quickly with public health authorities as required. Conclusion: Large scale exposures are a challenge to manage and ensure appropriate action and communication occurs. Errors can be prevented by having a single shared exposure management registry. A registry enables care teams to quickly identify and prioritize patients for measles follow-up, communication, PEP, and ongoing management across outbreak timeframes. This process reduces both time and operational burdens of exposure follow-up tracking outside of the EHR.