Jinyoung Kim, PhD, RN
Based on animal studies, Jinyoung Kim hypothesized during graduate school that simple snoring alone, not as a symptom of obstructive sleep apnea, is associated with cardiovascular disease.
While a PhD student in South Korea, she published several papers on the effects of self-reported snoring on the development of hypertension and diabetes in adults. But she was frustrated, because without conclusive research that linked snoring and related vibrations with adverse health outcomes, very few medical experts considered it necessary to treat snoring.
“The ultimate goal of my research on the independent impact of snoring is to promote cardiovascular health by providing optimal care to heavy snorers.”
- PhD, Ewha Womans University (Seoul, South Korea) , 2009
- MSN, Ewha Womans University, 2004
- BS, Ewha Womans University, 1999
As a postdoctoral research fellow at the University of Pennsylvania’s School of Nursing and Center for Sleep and Circadian Neurobiology from 2009 to 2013, Dr. Kim expanded her research into objective measurement of snoring and its possible impact on cardiovascular health. She began to study the independent effect of snoring on carotid atherosclerosis, with partial support from a postdoctoral fellowship grant from the National Research Foundation of Korea.
Dr. Kim, who joined the Penn Nursing faculty after completing her fellowship, has received a series of NIH grants, including a Pathway to Independence Award (K99/R00), to develop an objective measurement of snoring and study its association with carotid atherosclerosis. Using various aspects of snoring such as loudness, frequency, and duration, Dr. Kim is developing a snoring index to predict adverse cardiovascular outcomes.
Objective Measurement of Snoring for Better Treatment
Unlike the questionnaires typically used to gather subjective information about snoring patterns, the snoring index objectively measures snoring. While the patient sleeps in the sleep lab or at home, a portable sleep device records snoring sounds, tracks snoring episodes, and establishes the frequency of snoring waves and patterns. Dr. Kim inputs this information into her snoring index to study the association of snoring characteristics – such as the magnitude of snoring-induced vibrations or loudness – with changes in the structure and functions in a patient’s upper airways and adjacent vessels.
Dr. Kim expects the snoring index to be especially helpful in identifying and treating heavy snorers at risk of cardiovascular disease who don’t have obstructive sleep apnea. This group, the focus of her research, is comprised of half of all heavy snorers. Once Dr. Kim confirms the independent impact of snoring alone on carotid atherosclerosis and further cardiovascular events, and completes the snoring index, she’ll develop strategies for early detection of and intervention in at-risk heavy snorers.
Opportunities to Learn and Collaborate at Penn Nursing
At Penn Nursing, Dr. Kim believes that the opportunity to work with advanced, experienced sleep researchers in a world-class research facility contributed significantly to her efforts to develop research skills and understand the grant funding process. She also notes that the mentoring she received at Penn Nursing was exceptional, something she hopes to continue with her own graduate students one day. Dr. Kim is developing courses in sleep research for undergraduate and graduate students.
Selected Career Highlights
- Reviewer, Journal of Transcultural Nursing, Journal of Cardiovascular Nursing, and Sleep Medicine Research
- Poster Prize Award, World Sleep Conference, Kyoto, Japan
- Penn Nursing committee member, Research Committee and Graduate Program Curriculum Committee
Mazzotti D, Keenan B, Lim D, Gottlieb D, Kim J, Pack A. Symptom Subtypes of Obstructive Sleep Apnea Predict Incidence of Cardiovascular Outcomes. Am J Respir Crit Care Med. 2018 [In Press]
Kim J, Keenan B, Lim D, Lee S, Pack A, Shin C. Symptom Based Subgroups of Koreans with Obstructive Sleep Apnea. J Clin Sleep Med. 2018;14(3):437-443
Keenan B, Kim J*, Bittencourt L, Chen NH, Cistulli P, Magalang U, McArdle N, Penzel T, Sanner B, Schwab R, Shin C, Singh B, Sutherland K, Tufik S, Gislason T, and Pack A. Recognizable Clinical Faces of OSA across a Worldwide Sleep Center Population: A Cluster Analysis. Sleep. 2018;41(3). doi: 10.1093/sleep/zsx214
Lee S, Choi K, Chang YH, Kim J†, Shin C. Increased Risk for New-Onset Hypertension in Midlife Male Snorers: The 14-Year Follow-up Study. J Sleep Res. 2018 [Epub ahead of print]
Byun E, Kim J, Riegel B. Associations of Sleep Quality and Daytime Sleepiness with Cognitive Impairment in Adults With Heart Failure. Behav Sleep Med. 2017;15(4):302-317
Kim J, Pack A, Riegel B, Chirinos J, Hanlon A, Lee S, Shin C. Objective Snoring Time and Carotid Atherosclerosis in Nonapneic Female Snorers. J Sleep Res. 2017;26(2):147-150
Ham OK, Kim J, Lee GB, Choi E. Behavioral Characteristics and Cardiovascular Disease Risks Associated with Insomnia and Sleep Quality among Midlife Women. Res Nurs Health. 2017;40(3):206-217.
Kim J, Mohler E, Keenan B, Maislin D, Arnardottir E, Gislason T, Benediktsdottir B, Sifferman A, Staley B, Pack F, Maislin G, Chirinos J, Pack A, Kuna S. Carotid Artery Wall Thickness in Obese and Non-Obese Adults with Obstructive Sleep Apnea Before and Following Positive Airway Pressure Treatment. Sleep. Sleep. 2017;40(9). doi: 10.1093/sleep/zsx126
- Im, E.O., Kim, J., Chee, E., & Chee, W. (2015). The relationships between psychological symptoms and cardiovascular symptoms experienced during the menopausal transition: racial/ethnic differences. Menopause, published online 12/7/2015, (PMID: 26645821).
Lee SK, Kim JS, Kim SH, Kim YH, Lim HE, Kim EJ, Park CG, Cho GY, Kim J, Baik I, Park J, Lee JB, Shin C. Sodium Excretion and Cardiovascular Structure and Function in the Nonhypertensive Population: The Korean Genome and Epidemiology Study. Am J Hypertens. 2015;28(8):1010-1016.