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Merry, Stephen P

0000-0002-3816-8154

Mayo Clinic

Department of Family Medicine, Mayo Clinic, Rochester, MN, USA.

Citations 17

A randomized trial of bilateral greater occipital nerve blocks versus 10 peripheral nerve blocks for acute relief and prophylaxis of episodic migraine: A study protocol
Merry, Stephen , Greenlund, Laura S. , Brennan, David N. , Thacher, Tom D. , Boudreau, Remi , Averkamp, Natalie M. , Averkamp, Natalie , Merry, Stephen P , Thacher, Thomas D , Robertson, Carrie E.

Cephalalgia Reports | July 21, 2026 | Volume: 9 | Issue: No issue available | Pages: No page available

10.1177/25158163261471133 Get It

This protocol paper details a single-center, randomized trial to compare greater occipital nerve blocks (GONBs) to multiple peripheral nerve blocks (MPNBs) for acute headache relief and prophylaxis in episodic migraine. GONBs are effective for the treatment and prevention of migraine, but a combination of trigeminal and occipital nerve blocks can be effective when GONBs alone have failed. To test this hypothesis, 60 adult participants will be randomized to receive either bilateral GONB or MPNBs of the bilateral greater occipital, lesser occipital, auriculotemporal, supraorbital, and supratrochlear nerves during an acute migraine with 0.5–1.25 mL bupivacaine 0.5%. Methylprednisolone 10–20 mg will be added only for the occipital nerves. Anesthesia in the distribution of each nerve block will be tested, and reinjection with bupivacaine will be performed until anesthesia is achieved. The primary endpoint will be pain freedom 20 min after injections. Secondary endpoints include pain freedom at 2 and 24 h, headache relief at 2 h, frequency and severity of subsequent migraine, and absenteeism from work/school/life events due to headaches over a 12-week follow-up period compared to a four-week run-in period. Trial Registration: The trial is registered at ClinicalTrials.gov (NCT04278573).
Intralesional Injection of Vitamin D3 for Treatment of Cutaneous Warts: A Randomized, Double-Blind, Placebo-Controlled Trial
Merry, Stephen , Brennan, David N. , Duvall, Michelle J., Stanek, J., O’Dowd, Erin, Thacher, Tom D. , Merry, Stephen P , Duvall, Michelle , Stanek, Joseph B , O'Dowd, Erin K , Thacher, Thomas D

Journal of Primary Care & Community Health | August 23, 2025 | Volume: 16 | Issue: No issue available | Pages: No page available

10.1177/21501319251365853 Get It

Introduction: Treatment of cutaneous warts with intralesional vitamin D3 has demonstrated promising results in over 35 studies with methodological limitations. Methods: We conducted a randomized, double-blind, placebo-controlled trial in our primary care procedure clinic of intralesional vitamin D3 12 000 IU vs placebo in cutaneous warts every 4 weeks up to 3 times. Warts were assessed 4, 8, 12, and 24 weeks after the initial injection. The primary outcome was complete wart resolution. Reduction in wart size was a secondary outcome. Results: Between October 2020 and April 2023, we enrolled 77 participants with 1 or more cutaneous warts (41 and 36 in vitamin D3 and placebo groups, respectively) with untreated (32%) and recalcitrant (69%) warts. At 24 weeks, the index wart had resolved in 12 (30%) of vitamin D3 and 10 (31%) placebo participants. Treatment with vitamin D3 had no effect on wart surface area in an adjusted model nor wart resolution in analysis adjusted for baseline wart size, multiple warts, and the vehicle (OR 0.31 [95% CI] 0.01-10.3; P = 0.51). Conclusions: These results demonstrate a lack of benefit of intralesional vitamin D3 in cutaneous warts. ( ClinicalTrials.gov number NCT04278573)
Primary Care Physician Use of Elastic Scattering Spectroscopy on Skin Lesions Suggestive of Skin Cancer
Merry, Stephen , Croghan, Ivana T. , Dukes, Kimberly A. , McCormick, Brian C. , Considine, Gerard T. , Duvall, Michelle J., Thompson, Curtis , Leffell, David J. , Merry, Stephen P , Thompson, Curtis T

Journal of Primary Care & Community Health | June 5, 2025 | Volume: 16 | Issue: No issue available | Pages: No page available

10.1177/21501319251344423 Get It

Objectives: To evaluate the performance of noninvasive, elastic scattering spectroscopy, algorithm-powered device (DermaSensor) to detect melanoma and basal and squamous cell cancers in the primary care setting. Patients & Methods: DERM-SUCCESS, a blinded, prospective, multicenter pivotal study, enrolled adult patients between August 17, 2020, and December 9, 2021, with lesions that their primary care physicians (PCPs) suspected of skin cancer at clinics in the US (n = 18) and Australia (n = 4). These lesions were assessed by PCPs and scanned with the DermaSensor device. Biopsy specimens were collected, and histopathologic analysis was performed by dermatopathologists. The diagnostic performance of the device, dermatopathologist discordance, and subgroup analyses of clinical interest were calculated. Results: Of the 1579 skin lesions enrolled, dermatopathologic analysis identified 224 (14.2%) cancers. Device sensitivity was 95.5% (95% CI, 91.7%-97.6%) overall and 96.3% (92.9%-98.4%) for patients in the FDA-approved age group 40 years and older (90.2% for melanoma, 97.8% for basal cell carcinoma, and 97.7% for squamous cell carcinoma). Device specificity was 20.7%. The negative predictive value was 96.6%, and the positive predictive value was 16.6% (NNB 6). The device misclassified as “ monitor ” rather than “ investigate further ” 4 keratinocyte carcinomas and 4 melanomas in patients aged 40 years or older (n = 8, 0.5% of lesions, 3.7% of cancers biopsied). Conclusions: The DermaSensor device is an easy-to-use, point-of-care, hand-held skin cancer adjunctive diagnostic device with high sensitivity and NPV to help inform PCP decision-making about skin lesions suspicious for cancer that need further evaluation and those that may be monitored.
Impact of Dermoscopy Training on Diagnostic Accuracy, and Its Association With Biopsy and Referral Patterns Among Primary Care Providers: A Retrospective and Prospective Educational Intervention Study
Middleton, Hayden T. , Swanson, David C. , Sartori‐Valinotti, Julio C. , O’Laughlin, Danielle , Young, Peter A. , Merry, Stephen , Weatherly, Renee M., Boswell, Christopher L. , Swanson, David L, O'Laughlin, Danielle J , Merry, Stephen P , Fischer, Karen, Boswell, Christopher , Nelson, Kelly C. , Fischer, Karen M.

Journal of Primary Care & Community Health | November 5, 2024 | Volume: 15 | Issue: No issue available | Pages: No page available

10.1177/21501319241296625 Get It

Background: Proper diagnosis in primary care is crucial due to the large number of skin cancer diagnoses each year and its associated growing economic burden. Understanding how primary care providers can be best trained in dermoscopy is instrumental in helping primary care providers differentiate benign and malignant cutaneous lesions so that appropriate action can be taken (eg, biopsy/referral to dermatology or reassurance). Objective: To assess the success of concise dermoscopy training among primary care providers. Design: A cohort study was conducted in primary care at Mayo Clinic, Rochester, including primary care physicians, nurse practitioners, and physician assistants in internal medicine and family medicine. Diagnostic accuracy was measured on standardized testing through image-based recognition and in clinical practice through observation of referral and biopsy patterns both before and after dermoscopy education, focused on the TADA plus method. Results: Forty-three primary care providers completed the image-based recognition tests, with significant improvement in mean score measured after dermoscopy training workshop (20%). Among the thirteen primary care providers who continued to use dermoscopy in clinical practice, a significant improvement (31%) in mean clinical diagnostic accuracy was observed comparing 1 year of practice data before versus after dermoscopy training. Conclusion: Improvement in diagnostic accuracy with utilization of the TADA plus method translates into clinical practice. Therefore, training primary care providers in dermoscopy may improve the dermatologic care patients receive in primary care, especially in rural or medically underserved areas where access to dermatology is limited.
Vitamin D Status and Severe COVID-19 Disease Outcomes in Hospitalized Patients
Pecina, Jennifer L. , Merry, Stephen , Park, John G. , Thacher, Tom D. , Merry, Stephen P , Pecina, Jennifer , Thacher, Thomas D

Journal of Primary Care & Community Health | August 28, 2021 | Volume: 12 | Issue: No issue available | Pages: No page available

10.1177/21501327211041206 Get It

Background: Vitamin D deficiency may increase the risk of severe COVID-19 disease. Objectives: To determine if 25-hydroxyvitamin D [25(OH)D] levels in patients hospitalized for COVID-19 were associated with the clinical outcomes of days on oxygen, duration of hospitalization, ICU admission, need for assisted ventilation, or mortality. Methods: We conducted a retrospective study of 92 patients admitted to the hospital with SARS-CoV-2 infection between April 16, 2020 and October 17, 2020. Multivariable regression was performed to assess the independent relationship of 25(OH)D values on outcomes, adjusting for significant covariates and the hospitalization day the level was tested. Results: About 15 patients (16.3%) had 25(OH)D levels <20 ng/mL. Only 1 patient (3.4%) who had documented vitamin D supplementation prior to admission had 25(OH)D <20 ng/mL. Serum 25(OH)D concentrations were not significantly associated with any of our primary outcomes of days on oxygen, duration of hospitalization, intensive care unit (ICU) admission, need for mechanical ventilation, or mortality in any of the adjusted multivariable models. Adjusting for the hospital day of 25(OH)D sampling did not alter the relationship of 25(OH)D with any outcomes. Conclusion: Vitamin D status was not related to any of the primary outcomes reflecting severity of COVID-19 in hospitalized patients. However, our sample size may have lacked sufficient power to demonstrate a small effect of vitamin D status on these outcomes.
Trigger Finger? Just Shoot!
Merry, Stephen , O'Grady, J. , Boswell, Christopher L. , Merry, Stephen P , O'Grady, Jason S , Boswell, Christopher

Journal of Primary Care & Community Health | July 20, 2020 | Volume: 11 | Issue: No issue available | Pages: No page available

10.1177/2150132720943345 Get It

Trigger finger is a common condition usually curable by a safe, simple corticosteroid injection. Trigger finger results from a stenotic A1 pulley that has lost its gliding surface producing friction and nodular change in the tendon. This results in pain and tenderness to palpation of the A1 pulley, progressing to catching and then locking. Splinting for 6 to 9 weeks produces gradual improvement in most patients as does a quick steroid injection with the latter resulting in resolution of pain in days and resolution of catching or locking in a few weeks. Percutaneous or open release should be reserved for injection failures particularly those at high risk for continued injection failure including diabetics and those with multiple trigger fingers. We present a step-by-step method for injection with illustrations to encourage primary care providers to offer this easily performed procedure to their patients.
Dealing With Patient Death on International Health Electives: A Qualitative Study of Residents’ Experiences
Bashir, Majid , Nordhues, Hannah C. , Merry, Stephen , Sawatsky, Adam P. , Bashir, M Usmaan, Merry, Stephen P , Bashir, M. Usmaan

Academic Medicine | April 29, 2019 | Volume: 94 | Issue: 8 | Pages: 1170-1177

10.1097/acm.0000000000002763 Get It

Purpose International health electives (IHEs) provide numerous educational benefits; potential harms are less well understood. One potential harm is trainee distress associated with increased patient death during IHEs. The purpose of this study was to explore residents’ and fellows’ IHE experiences with patient death. Method The authors used applied thematic analysis to explore residents’ and fellows’ IHE experiences with patient death. The Mayo International Health Program supports IHEs from all specialties across three Mayo Clinic sites. Data were collected and analyzed in two steps. First the authors collected, coded, and analyzed narrative reflections from 43 postrotation reports gathered in 2001–2017 and identified themes relating to experiences with patient death. Second, in 2016–2017 the authors conducted semistructured interviews with six previous participants to refine thematic analysis. Results Participants described impacts of experiencing increased patient death and identified themes in two domains: difficult experiences with patient death and potential interventions to help residents process their experiences. They identified four themes illustrating why these experiences were difficult: lack of preparation for increased exposure to death, lack of closure, consequences of limited resources, and differences in cultural beliefs regarding death. While pretrip preparation for dealing with death was viewed as important, trainees identified support during and debriefing after IHEs as additional important interventions. Conclusions Given the popularity of IHEs, residency programs should consider the effect on trainees of increased exposure to patient death. Study findings can inform IHE preparation, support, and debriefing to minimize distress associated with witnessing patient deaths on IHEs.
Transformative Learning and Professional Identity Formation During International Health Electives: A Qualitative Study Using Grounded Theory
Sawatsky, Adam P. , Nordhues, Hannah C. , Merry, Stephen , Bashir, Majid , Hafferty, Frederic W. , Merry, Stephen P

Academic Medicine | March 27, 2018 | Volume: 93 | Issue: 9 | Pages: 1381-1390

10.1097/acm.0000000000002230 Get It

Purpose International health electives (IHEs) are widely available during residency and provide unique experiences for trainees. Theoretical models of professional identity formation and transformative learning may provide insight into residents’ experiences during IHEs. The purpose of this study was to explore transformative learning and professional identity formation during resident IHEs and characterize the relationship between transformative learning and professional identity formation. Method The authors used a constructivist grounded theory approach, with the sensitizing concepts of transformative learning and professional identity formation to analyze narrative reflective reports of residents’ IHEs. The Mayo International Health Program supports residents from all specialties across three Mayo Clinic sites. In 2015, the authors collected narrative reflective reports from 377 IHE participants dating from 2001 to 2014. Reflections were coded and themes were organized into a model for transformative learning during IHEs, focusing on professional identity. Results Five components of transformative learning were identified during IHEs: a disorienting experience; an emotional response; critical reflection; perspective change; and a commitment to future action. Within the component of critical reflection, three domains relating to professional identity were identified: making a difference; the doctor–patient relationship; and medicine in its “purest form.” Transformation was demonstrated through perspective change and a commitment to future action, including continued service, education, and development. Conclusions IHEs provide rich experiences for transformative learning and professional identity formation. Understanding the components of transformative learning may provide insight into the interaction between learner, experiences, and the influence of mentors in the process of professional identity formation.
Graduate medical education competencies for international health electives: A qualitative study
Nordhues, Hannah C. , Bashir, Majid , Merry, Stephen , Sawatsky, Adam P. , Bashir, M Usmaan, Merry, Stephen P, Merry, Stephen P

Medical Teacher | August 29, 2017 | Volume: 39 | Issue: 11 | Pages: 1128-1137

10.1080/0142159x.2017.1361518 Get It

Impact of predictors upon the reduction of lipid parameters in family medicine practice
Doğaner, Yusuf Çetin , Angstman, Kurt B. , Rohrer, James E. , Merry, Stephen , Angstman, Kurt, Rohrer, James, Merry, Stephen P

Sao Paulo Medical Journal | December 2, 2015 | Volume: 133 | Issue: 5 | Pages: 428-434

10.1590/1516-3180.2014.00321501 Get It

ABSTRACT CONTEXT AND OBJECTIVE: To evaluate predictors of changes in lipid parameters consisting of LDL-C (low-density lipoprotein cholesterol), TC (total cholesterol) and non-HDL-C (non-high density lipoprotein cholesterol) among primary care patients. DESIGN AND SETTING: Retrospective study conducted on family medicine patients. METHODS: Demographic features and other clinically relevant information were abstracted from medical records. The primary outcome was the difference in LDL-C level from initial testing to the index test. Secondary outcomes were the changes in TC and non-HDL-C levels between two measurements. RESULTS: Three hundred and eleven participants were included in the final secondary analysis. Multiple linear regression revealed that male patients (β = 4.97, P = 0.040), diabetes (β = 9.75, P = 0.003) and higher LDL-C levels at baseline (β = 0.35, P < 0.001) were positively associated with LDL variance, whereas longer time period (β = -0.15, P = 0.045) and familial hypercholesterolemia history (β = -7.56, P = 0.033) were negatively associated. Male patients (β = 8.45, P = 0.002), DM (β = 9.26, P = 0.011), higher TC levels at baseline (β = 0.35, P < 0.001) and taking statins (β = 7.31, P = 0.023) were positively associated with TC variance, whilst longer time period (β = -0.183, P = 0.031) and familial hypercholesterolemia (β = -10.70, P = 0.008) were negatively associated. CONCLUSION: In the present study, patients who were male, on statin treatment, diagnosed with diabetes and had higher baseline lipid values were more likely associated with better lipid outcomes at future testing.