Richard J. Ryan, MD

Yilmaz, Sule; Aryal, Komal; King, Jasmine; Bischof, Jason J; Hong, Arthur S; Wood, Nancy; Gould Rothberg, Bonnie E; Hudson, Matthew F; Heinert, Sara W; Wattana, Monica K; Coyne, Christopher J; Reyes-Gibby, Cielito; Todd, Knox; Lyman, Gary; Klotz, Adam; Abar, Beau; Grudzen, Corita; Bastani, Aveh; Baugh, Christopher W; Henning, Daniel J; Bernstein, Steven; Rico, Juan Felipe; Ryan, Richard J; Yeung, Sai-Ching Jim; Qdaisat, Aiham; Padela, Aasim; Madsen, Troy E; Liu, Raymond; Adler, David 2025. Understanding oncologic emergencies and related emergency department visits and hospitalizations: a systematic review. BMC emergency medicine, 25 1, 40

Bischof, Jason J; Elsaid, Mohamed I; Bridges, John F P; Rosko, Ashley E; Presley, Carolyn J; Abar, Beau; Adler, David; Bastani, Aveh; Baugh, Christopher W; Bernstein, Steven L; Coyne, Christopher J; Durham, Danielle D; Grudzen, Corita R; Henning, Daniel J; Hudson, Matthew F; Klotz, Adam; Lyman, Gary H; Madsen, Troy E; Reyes-Gibby, Cielito C; Rico, Juan Felipe; Ryan, Richard J; Shapiro, Nathan I; Swor, Robert; Thomas, Charles R; Venkat, Arvind; Wilson, Jason; Yeung, Sai-Ching Jim; Yilmaz, Sule; Caterino, Jeffrey M 2022. Characterization of older adults with cancer seeking acute emergency department care: A prospective observational study. Journal of geriatric oncology, 13 7, 943-951

Hudson, Matthew F; Strassels, Scott A; Durham, Danielle D; Siddique, Sunny; Adler, David; Yeung, Sai-Ching J; Bernstein, Steven L; Baugh, Christopher W; Coyne, Christopher J; Grudzen, Corita R; Henning, Daniel J; Klotz, Adam; Madsen, Troy E; Pallin, Daniel J; Rico, Juan F; Ryan, Richard J; Shapiro, Nathan I; Swor, Robert; Venkat, Arvind; Wilson, Jason; Thomas, Charles R; Bischof, Jason J; Lyman, Gary H; Caterino, Jeffrey M 2022. Examining pain among non-Hispanic Black and non-Hispanic White patients with cancer visiting emergency departments: CONCERN (Comprehensive Oncologic Emergencies Research Network). Academic emergency medicine : official journal of the Society for Academic Emergency Medicine, 29 3, 364-368

Klotz, Adam D; Caterino, Jeffrey M; Durham, Danielle; Felipe Rico, Juan; Pallin, Daniel J; Grudzen, Corita R; McNaughton, Caroline; Marcelin, Isabelle; Abar, Beau; Adler, David; Bastani, Aveh; Bernstein, Steven L; Bischof, Jason J; Coyne, Christopher J; Henning, Daniel J; Hudson, Matthew F; Lyman, Gary H; Madsen, Troy E; Reyes-Gibby, Cielito C; Ryan, Richard J; Shapiro, Nathan I; Swor, Robert; Thomas, Charles R; Venkat, Arvind; Wilson, Jason; Jim Yeung, Sai-Ching; Yilmaz, Sule; Stutman, Robin; Baugh, Christopher W 2022. Observation unit use among patients with cancer following emergency department visits: Results of a multicenter prospective cohort from CONCERN. Academic emergency medicine : official journal of the Society for Academic Emergency Medicine, 29 2, 174-183

Yilmaz, Sule; Grudzen, Corita R; Durham, Danielle D; McNaughton, Caroline; Marcelin, Isabelle; Abar, Beau; Adler, David; Bastani, Aveh; Baugh, Christopher W; Bernstein, Steven L; Bischof, Jason J; Coyne, Christopher J; Henning, Daniel J; Hudson, Matthew F; Klotz, Adam; Lyman, Gary H; Madsen, Troy E; Pallin, Daniel J; Reyes-Gibby, Cielito; Rico, Juan Felipe; Ryan, Richard J; Shapiro, Nathan I; Swor, Robert; Thomas, Charles R; Venkat, Arvind; Wilson, Jason; Yeung, Sai-Ching Jim; Caterino, Jeffrey M 2022. Palliative Care Needs and Clinical Outcomes of Patients with Advanced Cancer in the Emergency Department. Journal of palliative medicine, 25 7, 1115-1121

Coyne, Christopher J; Reyes-Gibby, Cielito C; Durham, Danielle D; Abar, Beau; Adler, David; Bastani, Aveh; Bernstein, Steven L; Baugh, Christopher W; Bischof, Jason J; Grudzen, Corita R; Henning, Daniel J; Hudson, Matthew F; Klotz, Adam; Lyman, Gary H; Madsen, Troy E; Pallin, Daniel J; Rico, Juan Felipe; Ryan, Richard J; Shapiro, Nathan I; Swor, Robert; Thomas, Charles R; Venkat, Arvind; Wilson, Jason; Yeung, Sai-Ching Jim; Caterino, Jeffrey M 2021. Cancer pain management in the emergency department: a multicenter prospective observational trial of the Comprehensive Oncologic Emergencies Research Network (CONCERN). Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer, 29 8, 4543-4553

Lane, Bennett H; Lyons, Michael S; Stolz, Uwe; Ancona, Rachel M; Ryan, Richard J; Freiermuth, Caroline E 2021. Naloxone provision to emergency department patients recognized as high-risk for opioid use disorder. The American journal of emergency medicine, 40 , 173-176

Shaw, Isaac; Faryar, Kiran A; Ryan, Richard J; Ancona, Rachel M; Fernandez, Francisco J; Lyons, Michael S 2020. Evaluation of low-intensity initiatives to improve linkage to care for emergency department patients with opioid use disorder. The American journal of emergency medicine, 38 11, 2391-2394

Adler, David; Abar, Beau; Durham, Danielle D; Bastani, Aveh; Bernstein, Steven L; Baugh, Christopher W; Bischof, Jason J; Coyne, Christopher J; Grudzen, Corita R; Henning, Daniel J; Hudson, Matthew F; Klotz, Adam; Lyman, Gary H; Madsen, Troy E; Pallin, Daniel J; Reyes-Gibby, Cielito C; Rico, Juan Felipe; Ryan, Richard J; Shapiro, Nathan I; Swor, Robert; Thomas, Charles R; Venkat, Arvind; Wilson, Jason; Yeung, Sai-Ching Jim; Caterino, Jeffrey M 2019. Validation of the Emergency Severity Index (Version 4) for the Triage of Adult Emergency Department Patients With Active Cancer. The Journal of emergency medicine, 57 3, 354-361

Butler, Megan M; Ancona, Rachel M; Beauchamp, Gillian A; Yamin, Cyrus K; Winstanley, Erin L; Hart, Kimberly W; Ruffner, Andrew H; Ryan, Shawn W; Ryan, Richard J; Lindsell, Christopher J; Lyons, Michael S 2016. Emergency Department Prescription Opioids as an Initial Exposure Preceding Addiction. Annals of emergency medicine, 68 2, 202-8

Fertel, Baruch S; Hart, Kimberly W; Lindsell, Christopher J; Ryan, Richard J; Lyons, Michael S 2015. Patients who use multiple EDs: quantifying the degree of overlap between ED populations. The western journal of emergency medicine, 16 2, 229-33

Fertel, Baruch S; Hart, Kimberly W; Lindsell, Christopher J; Ryan, Richard J; Lyons, Michael S 2012. Toward understanding the difference between using patients or encounters in the accounting of emergency department utilization. Annals of emergency medicine, 60 6, 693-8

Ryan, Richard J; Lindsell, Christopher J; Hollander, Judd E; O'Neil, Brian; Jackson, Raymond; Schreiber, Donald; Christenson, Robert; Gibler, W Brian 2009. A multicenter randomized controlled trial comparing central laboratory and point-of-care cardiac marker testing strategies: the Disposition Impacted by Serial Point of Care Markers in Acute Coronary Syndromes (DISPO-ACS) trial. Annals of emergency medicine, 53 3, 321-8

Ryan, Richard J; Lindsell, Chris; Sheehan, Paul 2008. Fluoroquinolone resistance during 2000-2005: an observational study. BMC infectious diseases, 8 , 71

Han, Jin H; Lindsell, Christopher J; Ryan, Richard J; Gibler, W Brian 2005. Changes in cardiac troponin T measurements are associated with adverse cardiac events in patients with chronic kidney disease. The American journal of emergency medicine, 23 4, 468-73