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Full-Text Articles in Internal Medicine

Medetomidine As A Fentanyl Adulterant: Pharmacology, Detection, Clinical Presentation, And Management, Kory S. London, Phil Durney, Brendan Hart, Ashish Thakrar, Dennis Goodstein, Alex J. Krotulski, Daniel Teixeira Da Silva, Joseph D’Orazio, Lara Weinstein, Jeanmarie Perrone, Michael J. Lynch Sep 2026

Medetomidine As A Fentanyl Adulterant: Pharmacology, Detection, Clinical Presentation, And Management, Kory S. London, Phil Durney, Brendan Hart, Ashish Thakrar, Dennis Goodstein, Alex J. Krotulski, Daniel Teixeira Da Silva, Joseph D’Orazio, Lara Weinstein, Jeanmarie Perrone, Michael J. Lynch

Division of Internal Medicine Faculty Papers & Presentations

Purpose of Review Medetomidine is a veterinary α2-adrenergic agonist that has been an adulterant of illicitly manufactured opioids since 2022. We review its pharmacology, detection, intoxication, withdrawal, and management, and assess why severe withdrawal has emerged in some regions but not others. Recent Findings Medetomidine has spread through North American drug markets yet evades most toxicology testing. Roughly two hundred times more potent than xylazine, with greater α2 selectivity and imidazoline-1 activity, it causes intoxication resembling other α2 agonists: sedation and bradycardia. The dominant clinical problem is withdrawal: autonomic dysregulation, intractable vomiting, and encephalopathy frequently requiring intensive care. Treatment requires …


Pulmonary Adenocarcinoma Arising From Somatic-Type Malignant Transformation Of A Nonseminomatous Germ Cell Tumor: A Case Report, Abdel Martinez Borrego, Brandon Cantazaro, Fatimah Bello, Christine Vega, Natacha Vargas, Payal Bhakta, Renzo Arauco Sep 2026

Pulmonary Adenocarcinoma Arising From Somatic-Type Malignant Transformation Of A Nonseminomatous Germ Cell Tumor: A Case Report, Abdel Martinez Borrego, Brandon Cantazaro, Fatimah Bello, Christine Vega, Natacha Vargas, Payal Bhakta, Renzo Arauco

School of Medicine Publications

Somatic-type malignant transformation (STM) is a rare but aggressive complication of nonseminomatous germ cell tumors (NSGCTs), most commonly arising from the teratomatous component and frequently occurring in metastatic sites. We report the case of a man in his 20s with a history of mixed NSGCT (50% yolk sac tumor, 40% teratoma, and 10% embryonal carcinoma) treated with left orchiectomy and chemotherapy in 2023, who initially responded to treatment but was subsequently lost to follow-up. He presented with one week of progressive dyspnea and pleuritic left-sided chest pain. Serum alpha-fetoprotein was markedly elevated at 2,966.7 ng/mL. Computed tomography demonstrated a progressive …


Endocarditis Caused By Candida (Candidozyma) Auris, Farah Ebrahim, Mzee Ngunga, Abdulaziz Abeid, Hilda Nasibwa, Newnex Mongare, Rodney Adam Sep 2026

Endocarditis Caused By Candida (Candidozyma) Auris, Farah Ebrahim, Mzee Ngunga, Abdulaziz Abeid, Hilda Nasibwa, Newnex Mongare, Rodney Adam

Internal Medicine, East Africa

Candida (Candidozyma) auris has emerged as a hospital-acquired pathogen and was first reported in East Asia in 2009. Infective endocarditis due to C. auris has been rarely reported, while other Candida species account for < 2% of infective endocarditis (IE) cases. Herein we report three cases of endocarditis caused by C. auris , including a native aortic valve, a native tricuspid valve, and a prosthetic valve. Each of these cases had been in healthcare settings months to years earlier that were the likely sources of their infec- tions. These cases suggest the possibility for indolent but life-threatening infections from C. auris . ©2026 The Authors. Published by Elsevier Ltd on behalf of International Society for Infectious Diseases.


Responding To Medetomidine In Philadelphia: Narrative Summary Of The Public Health Response To A New Psychoactive Substance, Tareva Warrick-Stone, Serge-Emile Simpson, Phil Durney, Dennis Goodstein, Catherine Abrams, Raymond Bobb, Kory London, Daniel Teixeira Da Silva Aug 2026

Responding To Medetomidine In Philadelphia: Narrative Summary Of The Public Health Response To A New Psychoactive Substance, Tareva Warrick-Stone, Serge-Emile Simpson, Phil Durney, Dennis Goodstein, Catherine Abrams, Raymond Bobb, Kory London, Daniel Teixeira Da Silva

Division of Internal Medicine Faculty Papers & Presentations

BACKGROUND: Despite the emergence of medetomidine as the dominant adulterant in Philadelphia's illicit opioid supply, coordinated public health responses are limited or non-existent in the literature. Thus, we summarize a recent Summit in Philadelphia of outpatient and inpatient service providers who specialize in the care of persons who use drugs to discuss medetomidine response readiness and building ongoing community readiness for potential destabilizing drug supply changes.

PURPOSE: Describe a public health intervention that distributed information about practices across health care settings and mobilized key informants to identify and address barriers to treatment.

METHODS: Descriptive summary of the in-person Summit organized …


Maternal Sjögren's Disease And Its Long Shadow: Adult-Onset Seronegative Lupus Nephritis Following Congenital Heart Block, Tatiana Dacak, Abelardo Rodriguez, Luisa Fernanda Gomez, Corey Haines, Nida Asif Aug 2026

Maternal Sjögren's Disease And Its Long Shadow: Adult-Onset Seronegative Lupus Nephritis Following Congenital Heart Block, Tatiana Dacak, Abelardo Rodriguez, Luisa Fernanda Gomez, Corey Haines, Nida Asif

School of Medicine Publications

Congenital complete atrioventricular block (CCAVB) is a well-recognized manifestation of neonatal lupus erythematosus (NLE), caused by transplacental transfer of maternal anti-Ro/Sjögren's Syndrome Type A (SSA) and anti-La/Sjögren's Syndrome Type B (SSB) antibodies. Although non-cardiac manifestations of NLE typically resolve within the first year of life, the long-term autoimmune risk in affected offspring remains unclear. We report a 24-year-old woman with CCAVB secondary to maternal Sjögren's disease who presented with acute heart failure, nephrotic-range proteinuria, bicytopenia, pericardial effusion, and findings concerning for Libman-Sacks endocarditis. Despite negative conventional lupus serologies, renal biopsy demonstrated Class IV/V lupus-like immune-complex glomerulonephritis with full-house immune complex …


A Misplaced Pocket Of Air: Intramural Gastric Air Most Consistent With Gastric Emphysema, Priyanka Panwar, Lavender Otom, Subo Marsa, Gerald Odong, Steven Idet, Irene Muchiri, Hussein Abdulsamad, John Odhiambo, Christopher Opio, Amos Mwasamwaja, Saleem Abdulkarim Aug 2026

A Misplaced Pocket Of Air: Intramural Gastric Air Most Consistent With Gastric Emphysema, Priyanka Panwar, Lavender Otom, Subo Marsa, Gerald Odong, Steven Idet, Irene Muchiri, Hussein Abdulsamad, John Odhiambo, Christopher Opio, Amos Mwasamwaja, Saleem Abdulkarim

Internal Medicine, East Africa

Background Gastric emphysema (GE), or gastric pneumatosis, is a rare, noninfectious cause of intramural gastric air that must be distinguished from emphysematous gastritis (EG), a highly lethal infectious entity. Despite similar radiographic appearances, these conditions differ substantially in etiology, clinical course, management, and prognosis.

Cases We report three hemodynamically stable patients with CT-confirmed intramural gastric air most consistent with GE. Two had associated portal venous gas. The cases occurred in distinct clinical contexts: infectious gastroenteritis with retching, transient midgut volvulus with obstructive gastric overdistension, and alcohol-related upper gastrointestinal bleeding with forceful vomiting and a Mallory–Weiss tear. Although early EG could …


Demographic And Clinical Characteristics Of Participants In The Neuropsychiatric Genetics Of African Populations-Psychosis (Neurogap-Psychosis) Study: A Descriptive Analysis, Rocky Stroud, Kimberly Hook, Melkam Alemayehu, Lukoye Atwoli, Mark Baker, Lori Chibnik, Bizu Gelaye, Stella Gichuru, Symon Kariuki, Rehema Mwema Aug 2026

Demographic And Clinical Characteristics Of Participants In The Neuropsychiatric Genetics Of African Populations-Psychosis (Neurogap-Psychosis) Study: A Descriptive Analysis, Rocky Stroud, Kimberly Hook, Melkam Alemayehu, Lukoye Atwoli, Mark Baker, Lori Chibnik, Bizu Gelaye, Stella Gichuru, Symon Kariuki, Rehema Mwema

Internal Medicine, East Africa

Background Approximately 1.3 million individuals in sub-Saharan Africa, as well as millions of others worldwide, live with psychotic disorders. However, there is limited mental health research based on these populations and even less of a focus on neuropsychiatric genetics research within these settings.

Methods To address this gap, the Neuropsychiatric Genetics of African Populations-Psychosis (NeuroGAP-Psychosis), a case-control study, collected data identifying genetic and environmental risk factors associated with psychotic disorders in Ethiopia, Kenya, South Africa, and Uganda. This paper describes baseline demographic and clinical characteristics of the 42,953 participants recruited between 2018–2023 and compares these characteristics by country and case …


A Perfect Storm In Advanced Aids: Severe Acute Respiratory Distress Syndrome From Pneumocystis Jirovecii And Mycobacterium Avium Complex Coinfection, Abdel Martinez, Abelardo Rodriguez, Conrad Chouinard, Fatimah Bello Jul 2026

A Perfect Storm In Advanced Aids: Severe Acute Respiratory Distress Syndrome From Pneumocystis Jirovecii And Mycobacterium Avium Complex Coinfection, Abdel Martinez, Abelardo Rodriguez, Conrad Chouinard, Fatimah Bello

School of Medicine Publications

Advanced HIV infection is associated with profound immunosuppression, predisposing patients to opportunistic infections such as Pneumocystis jirovecii pneumonia (PJP) and Mycobacterium avium complex (MAC). PJP can cause severe respiratory disease, including acute respiratory distress syndrome (ARDS), while disseminated MAC may contribute to systemic illness and pulmonary complications. Concurrent infection with both pathogens is uncommon but may precipitate severe pulmonary failure. A man in his 40s presented with unintentional weight loss, fatigue, oral thrush, and progressive dyspnea. On arrival, oxygen saturation was 86% on room air, requiring high-flow nasal cannula. Laboratory evaluation revealed profound immunosuppression (CD4 7 cells/mm3, HIV RNA 123,000 …


Metastatic Large Cell Neuroendocrine Carcinoma: A Rare Cause Of Hypopituitarism, Smriti Nair, Taskeen Ahmed, Jessica Watari Jul 2026

Metastatic Large Cell Neuroendocrine Carcinoma: A Rare Cause Of Hypopituitarism, Smriti Nair, Taskeen Ahmed, Jessica Watari

Division of Internal Medicine Faculty Papers & Presentations

Pituitary metastases from pulmonary large cell neuroendocrine carcinoma (LCNEC) are exceedingly rare but should be considered in patients presenting with arginine vasopressin deficiency and panhypopituitarism in the context of known or suspected metastatic lung cancer. Early recognition and prompt initiation of hormonal replacement therapy are essential to prevent life-threatening endocrine crises and to improve symptom burden. We describe a case of a 43-year-old male who presented with dyspnea, weight loss, and weakness who was found to have metastatic LCNEC involving the liver. Endocrine evaluation revealed central hypothyroidism, central adrenal insufficiency, and later arginine vasopressin deficiency manifested by polyuria and hypernatremia. …


Transjugular Intrahepatic Portosystemic Shunt (Tips) Outcomes For Variceal Hemorrhage During And After Covid-19: Racial, Payer, And Income Disparities - A National Retrospective Cohort Study With Stratified Sensitivity Analyses, Nakul Ganju, Shubham Gupta, Sahak Hovsepian, Samay Shah, Shaunak Ganju, Farshad Aduli Jul 2026

Transjugular Intrahepatic Portosystemic Shunt (Tips) Outcomes For Variceal Hemorrhage During And After Covid-19: Racial, Payer, And Income Disparities - A National Retrospective Cohort Study With Stratified Sensitivity Analyses, Nakul Ganju, Shubham Gupta, Sahak Hovsepian, Samay Shah, Shaunak Ganju, Farshad Aduli

Student Papers, Posters & Projects

BACKGROUND AND AIMS: Transjugular intrahepatic portosystemic shunt (TIPS) reduces mortality in esophageal variceal hemorrhage. Whether the COVID-19 pandemic worsened existing disparities in outcomes among patients undergoing TIPS remains unclear. We aimed to characterize racial, payer-based, and income-based disparities in post-TIPS outcomes before and after the COVID-19 pandemic.

METHODS: Using the 2016-2022 National Inpatient Sample, we conducted a retrospective cohort analysis of 31,860 weighted hospitalizations of adults with cirrhosis and esophageal variceal hemorrhage who underwent TIPS. Admissions were stratified as pre-COVID (2016-2019) and post-COVID (2020-2022). Primary outcomes were in-hospital mortality, length of stay, and total hospital charges. Multivariable regression models with …


Two Years Of Ocrelizumab Treatment In Black And Hispanic People With Multiple Sclerosis In Chimes: A Single-Arm Clinical Trial, Lilyana Amezcua, Anthony Reder, Evanthia Bernitsas, Nancy Monson, Timothy Vartanian, Gregory Wu, Mansoor Saleh, Annette Okai, Ahmed Obeidat, Dilraj Sokhi Jul 2026

Two Years Of Ocrelizumab Treatment In Black And Hispanic People With Multiple Sclerosis In Chimes: A Single-Arm Clinical Trial, Lilyana Amezcua, Anthony Reder, Evanthia Bernitsas, Nancy Monson, Timothy Vartanian, Gregory Wu, Mansoor Saleh, Annette Okai, Ahmed Obeidat, Dilraj Sokhi

Haematology and Oncology, East Africa

Objective To evaluate the effectiveness and safety of ocrelizumab in self-identified black and Hispanic people with relapsing multiple sclerosis.

Methods The Characterization of Ocrelizumab in Minorities with Multiple Sclerosis (CHIMES) trial, a prospective, open-label, single-arm, phase 4 study, intentionally recruited underrepresented populations in the US, Puerto Rico, and Kenya. Black and Hispanic people with relapsing multiple sclerosis aged 18–65 years with Expanded Disability Status Scale score 0–5.5 received ocrelizumab for 2 years. The primary endpoint was the proportion of participants with no evidence of disease activity in 3 components at week 48: protocol-defined relapse, 24-week confirmed disability progression, and disease …


Hiding In Plain Sight: A Case Of Intestinal Tuberculosis Masquerading As Benign Lower Gi Bleeding, Lavender Otom, Priyanka Panwar, Gerald Odong, Fatma Kassim, Patricia Okiro, Christopher Opio, Saleem Abdulkarim Jul 2026

Hiding In Plain Sight: A Case Of Intestinal Tuberculosis Masquerading As Benign Lower Gi Bleeding, Lavender Otom, Priyanka Panwar, Gerald Odong, Fatma Kassim, Patricia Okiro, Christopher Opio, Saleem Abdulkarim

Internal Medicine, East Africa

Background Intestinal tuberculosis (TB) represents the most common form of abdominal TB, often affecting the ileocaecal region. Lower gastrointestinal bleeding is an uncommon presentation and may create significant diagnostic uncertainty, particularly in immunocompromised patients and in settings where inflammatory bowel disease is also encountered.

Case Presentation A woman in her sixties from Africa presented with recurrent diarrhoea and intermittent haematochezia over a 6-month period. Initial endoscopic evaluation was nondiagnostic. Cross-sectional imaging later demonstrated multifocal bowel involvement affecting both the small and large bowel, including ileocaecal and rectoanal disease, with associated abdominopelvic lymphadenopathy. Histopathology from repeat colonoscopy biopsy showed caseating granulomas …


May Measurement Month 2023: Results Of An Opportunistic Blood Pressure Screening Campaign In Kenya, Mzee Ngunga, Thomas Beaney, Gabriele Kerr, Bernard Samia, Lilian Mbau, Neil Poulter, Hellen Nguchu, Jeilan Mohamed, Elijah Ogola Jul 2026

May Measurement Month 2023: Results Of An Opportunistic Blood Pressure Screening Campaign In Kenya, Mzee Ngunga, Thomas Beaney, Gabriele Kerr, Bernard Samia, Lilian Mbau, Neil Poulter, Hellen Nguchu, Jeilan Mohamed, Elijah Ogola

Internal Medicine, East Africa

The May Measurement Month (MMM) is a global screening campaign launched in 2017 to raise awareness of raised blood pressure (BP). Kenya has participated in all previous MMM campaigns. Adults aged ≥18 years were recruited through convenience sampling in nine counties of Kenya. Three seated BP readings were taken on each participant, and a questionnaire collected information on demographics, lifestyle factors, and comorbidities. Hypertension was defined as a systolic BP ≥140mmHg or diastolic BP ≥90mmHg or being on BP-lowering medication. Controlled BP was defined as being on BP-lowering medication with a BP < 140/90mmHg. Multiple imputation was used to estimate missing BP readings. In total, 4,601 were screened, with a mean age of 41.7 years and 42.7% were female. Of all participants, 1,176 (25.6%) had hypertension, of whom 198 (16.8%) were aware, and 190 (16.2%) were on antihypertensive medication. Of those on antihypertensive medication, 65 (34.2%) had controlled BP, and of all participants with hypertension, 5.5% had controlled BP. The mean systolic and diastolic BPs of those on treatment was significantly higher than those without hypertension. Hypertensive disease in a previous pregnancy was associated with higher BP amongst female participants.

The MMM campaign in Kenya identified a substantial …


Health Systems Interventions For Prevention Of Maternal Peripartum Infection In Low And Middle-Income Countries: A Systematic Review, Roseline Abwao, Job Mapesa, Wanja Tenambergen, David Odada, Nasra Gathoni, Felix Riunga Jul 2026

Health Systems Interventions For Prevention Of Maternal Peripartum Infection In Low And Middle-Income Countries: A Systematic Review, Roseline Abwao, Job Mapesa, Wanja Tenambergen, David Odada, Nasra Gathoni, Felix Riunga

Internal Medicine, East Africa

Background Globally, there is growing recognition that a functional health system is key to improving maternal health and reducing maternal mortality. Maternal peripartum infection remains a major cause of maternal morbidity and mortality, particularly in low- and middle-income countries. This infection is a multifaceted problem with many players. Adopting a health systems approach could help avert this preventable infection by addressing the gaps across all the components of care.

Objective The aim of this systematic review was to identify and evaluate interventions to prevent maternal peripartum infection in LMICs.

Methods A systematic search was conducted in Cochrane Library, CINAHL, MEDLINE …


Medical, Socioeconomic, And Geographic Disparities In Primary Health Care Access And Utilization: A Population-Based Study Of 8038 Individuals Aged One Year And Older In Rural Uganda, Saadiyah Mayet, Christin Puthur, Betty Nabatte, Benjamin Tinkitina, Christopher Opio, Yin-Cong Zhi, Narcis Kabatereine, Goylette Chami Jul 2026

Medical, Socioeconomic, And Geographic Disparities In Primary Health Care Access And Utilization: A Population-Based Study Of 8038 Individuals Aged One Year And Older In Rural Uganda, Saadiyah Mayet, Christin Puthur, Betty Nabatte, Benjamin Tinkitina, Christopher Opio, Yin-Cong Zhi, Narcis Kabatereine, Goylette Chami

Internal Medicine, East Africa

Background There is limited data on trends in primary health care (PHC) access and utilisation in rural sub-Saharan Africa, with a particular lack of knowledge on disparities beyond geographic barriers.

Methods A cross-sectional study was conducted within the community-based cohort, SchistoTrack. 2191 households were randomly sampled from 52 rural villages in Pakwach, Buliisa, and Mayuge Districts in Uganda. All household members aged one year and older were surveyed between 2022–2024, resulting in 8038 individuals with baseline health access information. Key outcomes included any care sought within the month preceding the study, type of care sought, and usual source of care. …


Hepatitis B In The Vaccine Era: Persistent Burden And Clinical Implications, Cherechi Nwabueze, Eunice Omeludike, Ridwan Ademola Lawal, Kedife Nwabueze Jul 2026

Hepatitis B In The Vaccine Era: Persistent Burden And Clinical Implications, Cherechi Nwabueze, Eunice Omeludike, Ridwan Ademola Lawal, Kedife Nwabueze

School of Medicine Publications

Hepatitis B virus (HBV) infection remains a leading global cause of advanced liver disease and imposes a substantial economic burden. Early prevention is critical, as perinatally acquired HBV carries a high risk of progression to cirrhosis or hepatocellular carcinoma (HCC). Hepatitis B vaccination has been proven effective in preventing cancer, yet coverage of the complete vaccine series remains suboptimal. This implementation gap perpetuates the clinical burden, manifesting decades later as hepatic decompensation and liver cancer. This narrative review synthesizes the current HBV landscape, highlighting how gaps in vaccination policy and delivery contribute to real-world gastrointestinal outcomes. By reframing HBV vaccination …


A Rare Manifestation Of Mycobacterium Kansasii As A Cutaneous Infection: A Case Report, Wandera Carey, Antony Kimani, Zamanali Khakhar, Dheer Kalaiya, Alok Iyer, Sayed Karar Jul 2026

A Rare Manifestation Of Mycobacterium Kansasii As A Cutaneous Infection: A Case Report, Wandera Carey, Antony Kimani, Zamanali Khakhar, Dheer Kalaiya, Alok Iyer, Sayed Karar

Internal Medicine, East Africa

Nontuberculous mycobacteria (NTM) are environmental organisms increasingly recognized as opportunistic pathogens, particularly in immunocompromised individuals. Mycobacterium kansasii, a slow-growing photochromogen (Runyon group I), is primarily associated with pulmonary disease; however, extrapulmonary and cutaneous manifestations are uncommon and often underdiagnosed. Given the rising incidence of NTM infections, cutaneous disease should be considered in the differential diagnosis of skin lesions, especially in immunocompromised patients. Early microbiological confirmation is crucial for appropriate therapy, as M. kansasii is intrinsically resistant to pyrazinamide. Herein, we present a case of pathologically confirmed cutaneous M. kansasii infection occurring in isolation, illustrating the diagnostic challenges and therapeutic outcomes.


A Blended Genome And Exome Sequencing Method Captures Genetic Variation In An Unbiased And Cost-Effective Manner, Toni Boltz, Benjamin Chu, Matthew Defelice, Calwing Liao, Julia Sealock, Robert Ye, Jacqueline Goldstein, Lerato Majara, Jack Fu, Lukoye Atwoli Jul 2026

A Blended Genome And Exome Sequencing Method Captures Genetic Variation In An Unbiased And Cost-Effective Manner, Toni Boltz, Benjamin Chu, Matthew Defelice, Calwing Liao, Julia Sealock, Robert Ye, Jacqueline Goldstein, Lerato Majara, Jack Fu, Lukoye Atwoli

Internal Medicine, East Africa

Here we developed and deployed the blended genome exome (BGE) method, a DNA library approach that generates low-pass whole-genome (1–4× mean depth) and deep whole-exome (30–40× mean depth) data in a single sequencing run. BGE is cost-effective, empowers most genomic discoveries possible with deep whole-genome sequencing and captures global common single-nucleotide polymorphism diversity. We applied BGE to sequence >53,000 samples from the PUMAS Project (Populations Underrepresented in Mental Illness Associations Studies), including African, African American and Latin American populations. Imputed genotypes showed high concordance with Illumina Global Screening Array calls (R2 ≥ 95% for minor allele frequency ≥1%; …


Regional Hemodynamic Characterization Of The Thoracic Aorta Using 4d Flow Mri: A Single-Center Pilot Study, John H. Major Jul 2026

Regional Hemodynamic Characterization Of The Thoracic Aorta Using 4d Flow Mri: A Single-Center Pilot Study, John H. Major

Summer Research Program Abstracts

No abstract provided.


Sex-Based Differences In Clinical Outcomes Among Cardiogenic Shock Patients Treated With Mechanical Circulatory Support, Emmanuel Olumuyide, Ju Young Bae, Rongras Damrongwatanasuk, Ezaz Rahman, Barbara Malaga-Espinoza, Jiun-Ruey Hu, S. Elissa Altin Jun 2026

Sex-Based Differences In Clinical Outcomes Among Cardiogenic Shock Patients Treated With Mechanical Circulatory Support, Emmanuel Olumuyide, Ju Young Bae, Rongras Damrongwatanasuk, Ezaz Rahman, Barbara Malaga-Espinoza, Jiun-Ruey Hu, S. Elissa Altin

School of Medicine Publications

Despite advances in therapies, cardiogenic shock (CS) remains associated with high mortality rates, often necessitating mechanical circulatory support (MCS) to preserve end-organ perfusion. Despite increasing rates of MCS utilization, less is known about sex-related differences in clinical outcomes to guide practice. Additionally, standardized management protocols for CS patients requiring MCS that account for sex differences are lacking. In this study, we evaluate sex-specific outcomes in CS patients requiring MCS, examine patterns of MCS utilization by sex, and further stratify clinical outcomes by sex across the overall CS cohort, including the acute myocardial infarction-related CS (AMI-CS), acute heart failure-related CS (AHF-CS), …


Using United States Medicare Program Claims To Identify Reliable Measures Of Low Value Services Influenced By Primary Care Physician Decisions, Chris Fleming, Dmitriy Poznyak, Rhea E. Powell, Claire Erba, Eunhae Shin, Rui Wang, Claire Burkhart, Arkadipta Ghosh, Eugene C. Rich Jun 2026

Using United States Medicare Program Claims To Identify Reliable Measures Of Low Value Services Influenced By Primary Care Physician Decisions, Chris Fleming, Dmitriy Poznyak, Rhea E. Powell, Claire Erba, Eunhae Shin, Rui Wang, Claire Burkhart, Arkadipta Ghosh, Eugene C. Rich

Division of Internal Medicine Faculty Papers & Presentations

BACKGROUND: Low-value services (LVS) are those that “… provide little to no benefit to patients….”1 Among an existing set of 31 LVS are invasive procedures not typically performed by primary care physicians (PCPs), and other LVS that may be commonly provided by specialists. To facilitate research on the role of primary care physicians in low-value care, we sought to identify the reliability of two subsets of LVS measures that are more directly subject to PCPs’ decisions. We refer to these as primary care adjacent (“PCA”) LVS measures.

METHODS: Retrospective observational cohort study to identify which of a 31-item LVS …


Operation No Noro: A Multidisciplinary Approach To Containing A Norovirus Outbreak In An Inpatient Rehabilitation Unit, Donika Marko, Roula Hilli, Priscila Bercea, Pamela S. Bozigar, Levi Launder, Stephanie Robertson, Trini A. Mathew Jun 2026

Operation No Noro: A Multidisciplinary Approach To Containing A Norovirus Outbreak In An Inpatient Rehabilitation Unit, Donika Marko, Roula Hilli, Priscila Bercea, Pamela S. Bozigar, Levi Launder, Stephanie Robertson, Trini A. Mathew

Conference Presentation Abstracts

Norovirus is a highly contagious viral gastroenteritis and can rapidly spread in healthcare settings, particularly in congregate environments such as inpatient rehabilitation units. In March 2025, a cluster of acute gastrointestinal illness was identified on a 34-bed inpatient rehabilitation unit within a 150-bed acute care hospital. Eight patients developed: • Nausea • Vomiting • Diarrhea • Abdominal pain Due to shared spaces, communal therapy activities, and high patient interaction, rapid intervention was initiated to prevent further spread.


Nurses’ Knowledge Regarding Ventilator-Associated Pneumonia Prevention Bundle In Adult Cardiac Care Units, Marwa Abdo Jun 2026

Nurses’ Knowledge Regarding Ventilator-Associated Pneumonia Prevention Bundle In Adult Cardiac Care Units, Marwa Abdo

Nursing

Ventilator-associated pneumonia (VAP) is among the most common ICU infections for ventilated patients, associated with increased mortality (20-50%), morbidity, and health care costs. Nurses' knowledge of VAP prevention bundles is vital to reducing its incidence in critical care areas. Aim: To assess Nurses’ knowledge regarding the ventilator-associated pneumonia prevention bundle in Adult Cardiac Care Units. Study design: A cross-sectional study design was used. Setting: This study was conducted in both the adult cardiac intensive care unit and the cardiac care unit at Aswan Heart Centre–Magdy Yacoub Foundation, Egypt. Subject: A convenience sample of 67 nurses was selected. Data collection tool: …


Targeting Inequities: Addressing Lung Cancer Care Challenges In Africa Through Drug Access, Radiotherapy, And Surgical Innovations, Elvis Obomanu, Chidiebube Ugwu, Muluken Megiso, Tarfa Verinumbe, Colton Jones, Verna Vanderpuye, Nazik Hammad Jun 2026

Targeting Inequities: Addressing Lung Cancer Care Challenges In Africa Through Drug Access, Radiotherapy, And Surgical Innovations, Elvis Obomanu, Chidiebube Ugwu, Muluken Megiso, Tarfa Verinumbe, Colton Jones, Verna Vanderpuye, Nazik Hammad

Division of Internal Medicine Faculty Papers & Presentations

Lung cancer remains one of the leading causes of cancer-related mortality in Africa, with survival rates starkly lagging behind global benchmarks because of systemic inequities in prevention, diagnosis, and treatment access. Despite representing only 6% of global smokers, the continent faces a disproportionate burden driven by environmental and occupational carcinogens, aggressive tobacco marketing, and fragmented health care infrastructure. Key challenges include prohibitive delays in accessing targeted therapies like epidermal growth factor receptor inhibitors and immunotherapies, a dire shortage of radiotherapy infrastructure-0.12 megavoltage units per million people versus the International Atomic Energy Agency's recommended five megavoltage units per million, and a …


Secondary Cutaneous Involvement In Peripheral T-Cell Lymphoma: Diagnostic Frameworks, Staging Integration, And Therapeutic Implications, Aura Calderon, Jose Loayza Pintado, Cristina Kochi, Jared Hensley, Andres Suarez Parraga, Everardo Cobos Jun 2026

Secondary Cutaneous Involvement In Peripheral T-Cell Lymphoma: Diagnostic Frameworks, Staging Integration, And Therapeutic Implications, Aura Calderon, Jose Loayza Pintado, Cristina Kochi, Jared Hensley, Andres Suarez Parraga, Everardo Cobos

School of Medicine Publications

The occurrence of secondary cutaneous manifestations in peripheral T-cell lymphoma (PTCL) is relatively infrequent and can resemble benign dermatoses, leading to diagnosis delays. We present the case of a 78-year-old female patient with a diagnosis of PTCL affecting the left parotid gland, who experienced a 2-day sudden and intensely pruritic skin eruption, which progressed from both forearms to the trunk, involving more than 50% of the total body surface area. Initially, the eruption was managed as a hypersensitivity reaction with antihistamines and corticosteroids, with temporary symptomatic relief; however, the rapid clinical progression in the context of an established diagnosis of …


Development And Validation Of The Lifetime Sense Of Safety Scale In Kenyan Adults, Karen Blackmon, Anne Nyambura, Anne Gitere, Levi Muyela, Catherine Onyancha, Kendi Muchungi, Catherine Ajalo, Litha Musili, Rachel Maina, Edna Bosire, Lukoye Atwoli, Zul Merali, Chinedu Momoh Jun 2026

Development And Validation Of The Lifetime Sense Of Safety Scale In Kenyan Adults, Karen Blackmon, Anne Nyambura, Anne Gitere, Levi Muyela, Catherine Onyancha, Kendi Muchungi, Catherine Ajalo, Litha Musili, Rachel Maina, Edna Bosire, Lukoye Atwoli, Zul Merali, Chinedu Momoh

Brain and Mind Institute

Background. Safety supports psychological wellbeing and potentially shapes brain aging yet existing scales overlook cumulative lifespan safety experiences.

Methods. To address this gap, we developed and validated the Lifetime Sense of Safety (LSS) scale in Kenyan adults. The LSS uses visual analog scaling with a red-to-green color gradient to retrospectively rate felt safety across life stages and settings. We evaluated scale psychometrics and associations with social determinants of health and indicators of brain health.

Results. The LSS shows adequate internal consistency and test-retest reliability, with two distinct but correlated factors representing childhood and adulthood safety. Women and …


An Aggressive Presentation Of Anti-Melanoma Differentiation-Associated Gene 5 (Mda-5)-Positive Dermatomyositis With Rapidly Progressive Interstitial Lung Disease: A Case Report, Zamanali Khakhar, Shreedhi Patel, Rajiv Patel, Soraiya Manji, Fredrick Otieno, Sayed Karar Jun 2026

An Aggressive Presentation Of Anti-Melanoma Differentiation-Associated Gene 5 (Mda-5)-Positive Dermatomyositis With Rapidly Progressive Interstitial Lung Disease: A Case Report, Zamanali Khakhar, Shreedhi Patel, Rajiv Patel, Soraiya Manji, Fredrick Otieno, Sayed Karar

Internal Medicine, East Africa

Anti-melanoma differentiation-associated gene 5 (MDA-5) dermatomyositis is an uncommon condition that is frequently complicated by rapidly progressive interstitial lung disease (RP-ILD), resulting in a poor prognosis. Due to its aggressive course, management is often challenging and requires timely interventions to improve outcomes. This case of a female patient with anti-MDA-5-positive DM and RP-ILD aims to document this unique and uncommon condition, its aggressive clinical course, associated complications, diagnostic challenges, and management considerations.


Social Relationships, Mental Health, And Stigma: A Qualitative Study Of Social Networks And Hiv Disclosure In Western Kenya, Sarah Obatsa, Adel Mburia-Mwalili, Salvador Jauregui, Karla Wagner, Lukoye Atwoli, Francesca Odhiambo, Jayne Lewis-Kulzer, Suzanne Goodrich, Kara Wools-Kaloustian, Jennifer Syvertsen Jun 2026

Social Relationships, Mental Health, And Stigma: A Qualitative Study Of Social Networks And Hiv Disclosure In Western Kenya, Sarah Obatsa, Adel Mburia-Mwalili, Salvador Jauregui, Karla Wagner, Lukoye Atwoli, Francesca Odhiambo, Jayne Lewis-Kulzer, Suzanne Goodrich, Kara Wools-Kaloustian, Jennifer Syvertsen

Internal Medicine, East Africa

The disclosure of one’s HIV-positive status is a personal decision that can play an important role in engagement in HIV treatment and care. Social network approaches situate individuals within broader webs of social connections that influence health and wellbeing and thus hold the potential to elucidate key social factors shaping the process of disclosure. As part of a larger clinical study examining how substance use and mental health shape HIV outcomes, we recruited 61 individuals newly diagnosed with HIV at two clinics in Western Kenya to participate in an egocentric social networks study. We conducted a survey that generated a …


Ambulatory Blood Pressure Monitoring Phenotypes And Circadian Blood Pressure Patterns Among Adults Referred For Diagnostic Evaluation At Aga Khan University Hospital, Nairobi, Kenya: A Retrospective Cross-Sectional Study, Nadeem Kassam, Mzee Ngunga, James Orwa, Alisa Bhojani, Mohamed Varwani, Swaffiya Salim, Yvonne Oketch, Salim Surani, Anthony Ochola, Barbara Karau, Jeilan Mohamed, Etienne Amendezo Jun 2026

Ambulatory Blood Pressure Monitoring Phenotypes And Circadian Blood Pressure Patterns Among Adults Referred For Diagnostic Evaluation At Aga Khan University Hospital, Nairobi, Kenya: A Retrospective Cross-Sectional Study, Nadeem Kassam, Mzee Ngunga, James Orwa, Alisa Bhojani, Mohamed Varwani, Swaffiya Salim, Yvonne Oketch, Salim Surani, Anthony Ochola, Barbara Karau, Jeilan Mohamed, Etienne Amendezo

Internal Medicine, East Africa

Introduction: hypertension represents the primary modifiable risk factor for cardiovascular disease and poses a public health challenge in sub-Saharan regions, with Kenya experiencing particularly low detection and control rates. Traditional office-based blood pressure measurements often fail to detect key phenotypes, such as white-coat and masked hypertension. Ambulatory Blood Pressure Monitoring (ABPM) offers a comprehensive 24-hour profile that excludes white-coat hypertension and allows for the evaluation of circadian patterns, including nocturnal hypertension and non-dipping status, both of which are recognized as high-risk phenotypes strongly linked to adverse cardiovascular events. This study evaluated ABPM data from Aga Khan University Hospital, Nairobi …


Left Bundle Branch Area Pacing Outcomes From An African Registry: Short-Term Findings From The Macop Study, Willy Mucyo, Marcus Ngantcha, Mzee Ngunga, Miriam Msunza, Justin Ragadu, Klindheer Rampersad, Jeilan Mohamed, Brian Vezi Jun 2026

Left Bundle Branch Area Pacing Outcomes From An African Registry: Short-Term Findings From The Macop Study, Willy Mucyo, Marcus Ngantcha, Mzee Ngunga, Miriam Msunza, Justin Ragadu, Klindheer Rampersad, Jeilan Mohamed, Brian Vezi

Internal Medicine, East Africa

Background

Left Bundle Branch Area Pacing (LBBAP) provides physiological ventricular activation and has emerged as an alternative to conventional cardiac resynchronization therapy. Data on LBBAP outcomes in African populations remain scarce.

Objective

To describe procedural outcomes of LBBAP in an African cohort.

Methods

A descriptive registry study included 311 patients from Kenya and South Africa who underwent LBBAP between 2021 and 2024. Data on pacing thresholds, QRS duration (QRSd), fluoroscopy time, and left ventricular ejection fraction (LVEF) were collected and analyzed. Patients were stratified by baseline QRSd categories, conduction patterns, pacing indication, and LVEF.

Results

The mean age was 65±14 …