Dr. Clausen studies a variety of health issues, particularly those affecting vulnerable populations like preterm infants and individuals with chronic diseases. Her research spans from using machine learning to predict kidney stone recurrence to designing wearable devices that monitor health indicators through skin gas analysis. Additionally, she investigates new methods to reactivate latent HIV, seeking better treatment options for those living with the virus. By developing advanced monitoring techniques and effective medical therapies, Dr. Clausen aims to enhance care for patients with conditions ranging from heart disease to spinal injuries.
Key findings
Created a machine learning model that predicts kidney stone recurrence with an effectiveness score of 0.727, analyzing data from over 154,000 patients.
Developed a battery-free device for spinal and muscular electrical stimulation that provides a power increase of 500%, improving treatments for spinal injury patients.
Found that 37 out of 43 medications tested in NICU had osmolality levels exceeding 500 mOsm/kg, which can cause serious digestive problems for preterm infants.
Identified two promising compounds for HIV treatment that effectively target HDACs at very low concentrations, indicating strong potential for therapy development.
Demonstrated no significant recovery benefits from presleep protein supplementation in runners after a week of endurance training, as times decreased by 11 to 24 seconds.
Frequently asked questions
Does Dr. Clausen study kidney stones?
Yes, she focuses on predicting kidney stone recurrence using machine learning to help manage patient care effectively.
What treatments has Dr. Clausen researched for HIV?
She has researched new drug compounds that target specific enzymes to reactivate latent HIV, showing strong potential for improving HIV treatments.
Is Dr. Clausen's work relevant to premature infants?
Absolutely, she studies medication concentrations and health indicators that significantly impact the care of premature and low birthweight infants.
Does Dr. Clausen's research help patients with spinal injuries?
Yes, her development of a new battery-free muscle stimulation device aims to improve treatments for spinal injury patients.
What innovations has Dr. Clausen contributed to in medical devices?
She has developed wearable technology for continuous monitoring of health through skin gas analysis and wireless cardiac stimulation devices.
Publications in plain English
Application of Machine Learning to Predict Symptomatic Recurrence Events for Patients With Kidney Stone.
2026
Urology practice
Goharderakhshan RZ, Crain NA, Murad D, Clausen D, Loo RK
Plain English Researchers studied how machine learning could help predict which patients are most likely to have kidney stones return within a year after their first treatment. They analyzed health records from over 154,000 patients and created a model that accurately identified this risk with an effectiveness score of 0.727. This finding is important because it could lead to better management of kidney stone patients, helping doctors focus on those who need the most attention to prevent future problems.
Who this helps: This helps patients with a history of kidney stones and their doctors.
Wearable continuous diffusion-based skin gas analysis.
2025
Nature communications
Clausen D, Farley M, Little A, Kasper K, Moreno J +2 more
Plain English This study looked at a new way to monitor gases released from the skin using a special wearable device. The researchers found that their device could analyze important signals related to sweating and other body processes in real-time without needing a replacement for weeks. This is significant because it offers a better understanding of health and bodily functions compared to existing methods.
Who this helps: This benefits patients and healthcare providers by providing continuous, detailed insights into health conditions.
Fully implanted battery-free high power platform for chronic spinal and muscular functional electrical stimulation.
2023
Nature communications
Burton A, Wang Z, Song D, Tran S, Hanna J +12 more
Plain English Researchers developed a new device that can wirelessly power electrical stimulation for muscles and the nervous system without using batteries. Their system achieved a power increase of 500% compared to existing technologies, supplying over 300 milliwatts of power with a voltage of ±20 volts. This advancement is important because it enables better control of muscle stimulation over extended periods, which could improve treatments for various conditions, especially for people with spinal injuries.
Who this helps: Patients with spinal cord injuries and those requiring muscle stimulation therapy.
Within-City Variation in Ambient Carbon Monoxide Concentrations: Leveraging Low-Cost Monitors in a Spatiotemporal Modeling Framework.
2022
Environmental health perspectives
Bi J, Zuidema C, Clausen D, Kirwa K, Young MT +7 more
Plain English This study focused on measuring levels of carbon monoxide (CO) in Baltimore, Maryland, to see how it varies across different areas of the city. Researchers created a daily prediction model using low-cost monitors and found that CO levels often spiked near busy roads and certain pollution sources, with notable differences in concentrations depending on location. Understanding these variations is important because high levels of CO can be linked to heart problems, and better monitoring can help protect public health.
Who this helps: This benefits patients and communities living near busy roads or pollution sources.
Wireless, fully implantable cardiac stimulation and recording with on-device computation for closed-loop pacing and defibrillation.
2022
Science advances
Ausra J, Madrid M, Yin RT, Hanna J, Arnott S +6 more
Plain English This study focused on a new wireless device that can be implanted in small animals to monitor and control their heart functions in real-time. Researchers created a battery-free device that allows for precise stimulation of the heart using light and was successfully tested on freely moving animals, meaning the device can work continuously over long periods. This innovation is important because it provides a better way to study heart conditions and evaluate new treatments that can be applied over time.
Who this helps: This benefits researchers studying heart diseases and developing new therapies.
Cardiopulmonary resuscitation in quaternary neonatal intensive care units: a multicenter study.
2021
Resuscitation
Ali N, Lam T, Gray MM, Clausen D, Riley M +2 more
Plain English This study analyzed the rates and outcomes of cardiopulmonary resuscitation (CPR) in advanced neonatal intensive care units (NICUs) over six years. Out of 17,358 babies admitted, 200 needed CPR, and 45.5% of them survived to go home. Most CPR cases were linked to severe breathing problems, especially in babies on mechanical ventilation, while longer CPR times and certain underlying conditions were linked to lower survival rates.
Who this helps: This information helps doctors and healthcare providers understand CPR effectiveness in critically ill newborns, guiding better care decisions.
Osmolality of Commonly Used Oral Medications in the Neonatal Intensive Care Unit.
2021
The journal of pediatric pharmacology and therapeutics : JPPT : the official journal of PPAG
Shah DD, Kuzmov A, Clausen D, Siu A, Robinson CA +3 more
Plain English This study looked at the concentration levels of certain oral medications given to premature and low birthweight babies in the Neonatal Intensive Care Unit (NICU). Researchers tested 52 different medications and found that 37 out of 43 of those that could be measured had a concentration higher than 500 mOsm/kg, which is above the recommended limit for these infants. This is important because using medications with high osmolality can lead to serious digestive issues for these vulnerable patients.
Who this helps: This helps doctors treating premature and low birthweight infants.
Discovery of Ethyl Ketone-Based Highly Selective HDACs 1, 2, 3 Inhibitors for HIV Latency Reactivation with Minimum Cellular Potency Serum Shift and Reduced hERG Activity.
2021
Journal of medicinal chemistry
Yu W, Liu J, Clausen D, Yu Y, Duffy JL +14 more
Plain English This research focused on developing new inhibitors that target specific enzymes called HDACs 1, 2, and 3, which are important for activating dormant HIV. The results showed that the new inhibitors are very effective and selective, with the ability to not impact other enzymes that could cause side effects. Additionally, these compounds performed well in tests using rats and dogs, meaning they are promising candidates for further development.
Who this helps: This benefits patients with HIV who need treatments to activate the virus from its dormant state.
Discovery of macrocyclic HDACs 1, 2, and 3 selective inhibitors for HIV latency reactivation.
2021
Bioorganic & medicinal chemistry letters
Yu W, Fells J, Clausen D, Liu J, Klein DJ +7 more
Plain English Researchers studied new drugs that can target specific enzymes (HDACs 1, 2, and 3) to help reactivate HIV that is hidden in the body. They found two promising compounds, numbered 25 and 26, that were effective at very low concentrations in laboratory tests, which shows they have strong potential for helping with HIV treatment. Improving these drugs further could lead to better ways to manage HIV in patients, helping to control the virus more effectively.
Who this helps: Patients living with HIV.
Discovery of ethyl ketone-based HDACs 1, 2, and 3 selective inhibitors for HIV latency reactivation.
2020
Bioorganic & medicinal chemistry letters
Yu W, Liu J, Yu Y, Zhang V, Clausen D +14 more
Plain English Researchers studied new drugs called ethyl ketone-based inhibitors that target specific enzymes (HDACs 1, 2, and 3) to help reactivate latent HIV in the body. They found that one of the best compounds, called Compound 13, was very effective and selective, showing impressive results in tests with rats and dogs. This is important because it could lead to better treatments for people living with HIV, helping to manage the virus more effectively.
Who this helps: Patients living with HIV.
Selective Class I HDAC Inhibitors Based on Aryl Ketone Zinc Binding Induce HIV-1 Protein for Clearance.
2020
ACS medicinal chemistry letters
Liu J, Kelly J, Yu W, Clausen D, Yu Y +13 more
Plain English This study looked at new drugs that can wake up hidden HIV in immune cells, making it easier for the body to eliminate the virus. Researchers discovered selective drugs that work effectively to activate HIV, showing strong results such as inducing HIV proteins in patient cells. This is important because it represents a potential step towards curing HIV by targeting and clearing reservoirs of the virus in the body.
Who this helps: This helps HIV patients seeking a potential cure.
Association of circulating FGF-21 levels in the first week of life and postnatal growth in hospitalized preterm infants.
2020
Metabolism open
Joung KE, Clausen D, Herdt A, Presti A, Snyder R +3 more
Plain English This study looked at a protein called FGF-21 in 25 preterm infants during their first week of life to see how it relates to their growth before leaving the hospital. Researchers found that FGF-21 levels increased significantly over this time, and higher levels of FGF-21 within the first day were linked to better weight and length growth by the time the babies were discharged. Understanding this relationship is important because it might help improve growth strategies for premature infants, which could lead to better long-term health outcomes.
Who this helps: This helps doctors and healthcare providers caring for premature infants.
Intracellular metalloprotease activity controls intraneuronal Aβ aggregation and limits secretion of Aβ via exosomes.
2019
FASEB journal : official publication of the Federation of American Societies for Experimental Biology
Pacheco-Quinto J, Clausen D, Pérez-González R, Peng H, Meszaros A +3 more
Plain English This study looked at how certain enzymes inside brain cells impact the buildup of amyloid-beta (Aβ), a protein linked to Alzheimer's disease. The researchers found that blocking two specific enzymes, called ECE-1 and ECE-2, led to higher levels of Aβ both inside the cells and released outside of them. Specifically, when these enzymes were inhibited, it resulted in more Aβ aggregates forming inside neurons and increased amounts of Aβ found in tiny bubbles (exosomes) released from the cells.
Who this helps: This research benefits patients with Alzheimer's disease and may inform potential treatments for managing Aβ levels in the brain.
Presleep Protein Supplementation Does Not Improve Recovery During Consecutive Days of Intense Endurance Training: A Randomized Controlled Trial.
2019
International journal of sport nutrition and exercise metabolism
Larsen MS, Clausen D, Jørgensen AA, Mikkelsen UR, Hansen M
Plain English This study looked at whether taking a protein supplement before sleep could help runners recover better after a week of intense endurance training. Researchers found that both groups, those taking protein and those taking carbohydrates, performed similarly worse in a 5-kilometer time trial after the training—specifically, their times fell by about 11 to 24 seconds. Additionally, markers of muscle damage in the blood increased significantly for both groups over the week, showing no benefits from the protein supplementation.
Who this helps: This research helps athletes and coaches understand that protein before sleep doesn’t improve recovery from endurance training.
Ideal Cricoid Pressure Is Biomechanically Impossible During Laryngoscopy.
2018
Academic emergency medicine : official journal of the Society for Academic Emergency Medicine
Trethewy CE, Doherty SR, Burrows JM, Clausen D
Plain English This study looked at whether applying the right amount of cricoid pressure (CP) during a medical procedure called rapid sequence intubation (RSI) could help prevent aspiration (when stomach contents enter the lungs) in emergency patients. Researchers found that neither the ideal cricoid pressure (3.060-4.075 kg) nor any measured pressure was effectively maintained during the procedure, as both groups dropped below the ideal range and had a 26% incidence of visible contamination. Because of this, maintaining the ideal pressure during laryngoscopy was deemed impossible, which raises concerns about the safety of current practices used in emergency intubations.
Who this helps: This research benefits emergency doctors and their patients during critical intubation procedures.
PDE1A inhibition elicits cGMP-dependent relaxation of rat mesenteric arteries.
2017
British journal of pharmacology
Khammy MM, Dalsgaard T, Larsen PH, Christoffersen CT, Clausen D +6 more
Plain English This study looked at a specific enzyme called PDE1A in rat arteries to understand how it affects the relaxation of blood vessels. Researchers found that PDE1A is the main form of this enzyme in the arteries, meaning that when they inhibited it, the arteries relaxed more effectively, with the strongest inhibitor causing significant relaxation. This is important because it shows a clear link between PDE1A and blood vessel function, which could lead to new treatments for conditions related to blood flow.
Who this helps: This research benefits patients with cardiovascular issues by potentially leading to better treatments.
Reference Intervals for Non-Fasting CVD Lipids and Inflammation Markers in Pregnant Indigenous Australian Women.
2017
Healthcare (Basel, Switzerland)
Schumacher TL, Oldmeadow C, Clausen D, Weatherall L, Keogh L +2 more
Plain English This study looked at blood samples from 399 pregnant Indigenous Australian women to establish normal levels of cholesterol, triglycerides, and inflammation markers related to heart disease during pregnancy. The researchers found that cholesterol and triglycerides increased as pregnancy progressed, but other markers showed little change. These findings are important because they provide a reference point to help monitor cardiovascular health in pregnant Indigenous women, who are at higher risk for heart disease.
Who this helps: This benefits pregnant Indigenous women and their healthcare providers.
A mouse model of the schizophrenia-associated 1q21.1 microdeletion syndrome exhibits altered mesolimbic dopamine transmission.
2017
Translational psychiatry
Nielsen J, Fejgin K, Sotty F, Nielsen V, Mørk A +10 more
Plain English The researchers created a special breed of mice to study how a genetic deletion linked to a higher risk of schizophrenia affects brain function. They found that these mice were more hyperactive and had unusual responses when given drugs that affect dopamine, a key brain chemical. This matters because understanding these changes in brain activity can help researchers learn more about schizophrenia and how to better treat people with this condition.
Who this helps: This helps patients with schizophrenia and their doctors.
A cohort of Indigenous Australian women and their children through pregnancy and beyond: the Gomeroi gaaynggal study.
2016
Journal of developmental origins of health and disease
Ashman AM, Collins CE, Weatherall L, Brown LJ, Rollo ME +7 more
Plain English The Gomeroi gaaynggal study examines the health and development of Indigenous Australian women and their children from pregnancy through early childhood. Researchers looked at over 230 pregnant women, finding that the average birth weight of their babies was about 7 pounds, with nearly 40% needing special care after birth. This research is important because it aims to reveal how early life experiences affect chronic diseases later on, helping to create better health programs for Indigenous communities.
Who this helps: This benefits Indigenous Australian mothers and their children.
PP025. Measurement of the activity of the circulating and intrarenal renin-angiotensin system (iRAS) in pregnant and non-pregnant subjects.
2013
Pregnancy hypertension
Lumbers E, Pringle K, Sykes S, Weatherall L, Clausen D +2 more
Plain English This study looked at how certain markers in the urine related to kidney health in pregnant and non-pregnant individuals, particularly focusing on women from Indigenous Australian communities. Researchers found that varying levels of proteins in the urine during pregnancy could signal early kidney disease, which is important because kidney issues can lead to serious complications like preeclampsia. Specifically, they found strong connections between urinary markers and kidney health, such as a correlation of 0.45 between prorenin levels and protein levels in pregnant women.
Who this helps: This research benefits pregnant individuals, especially those at risk for kidney disease and related complications.
PP036. The intrarenal renin-angiotensin system and pregnancy outcome.
2013
Pregnancy hypertension
Pringle K, Lumbers E, Sykes S, Weatherall L, Clausen D +2 more
Plain English This study looked at how a specific system in the kidneys (called the intrarenal renin-angiotensin system) functions during pregnancy, especially focusing on differences between non-Indigenous and Indigenous women. Researchers found that during pregnancy, Indigenous women had lower levels of a substance called angiotensinogen relative to creatinine compared to non-Indigenous women, which could indicate a risk for complications like preeclampsia; specifically, Indigenous women averaged 2.9 µg/mmol in contrast to a higher average in non-Indigenous pregnant women. This matters because recognizing these differences may help identify pregnant women at risk for conditions such as preeclampsia, allowing for earlier intervention.
Who this helps: This helps both pregnant women and doctors by improving monitoring for potential complications.
Effectiveness of cricoid pressure in preventing gastric aspiration during rapid sequence intubation in the emergency department: study protocol for a randomised controlled trial.
2012
Trials
Trethewy CE, Burrows JM, Clausen D, Doherty SR
Plain English This study looks at the effectiveness of cricoid pressure, a technique used during rapid sequence intubation (a method to place a breathing tube in emergencies), in preventing patients from choking on their stomach contents. Researchers are testing two methods: one that uses the exact amount of force (30-40 newtons) and another that applies pressure without measuring it. They will track 212 patients for signs of aspiration (when stomach contents enter the lungs) and other complications for up to 28 days after intubation to see which method is safer and more effective.
Who this helps: This helps emergency medicine teams and patients undergoing intubation.
NF-κB signalling is attenuated by the E7 protein from cutaneous human papillomaviruses.
2012
Virus research
Byg LM, Vidlund J, Vasiljevic N, Clausen D, Forslund O +1 more
Plain English This study examined how the E7 protein from different types of skin-related human papillomavirus (HPV) affects a specific cell signaling pathway that is important for inflammation and cancer development, known as the NF-κB pathway. The researchers found that the E7 proteins from six different types of cutaneous HPV can weaken the NF-κB pathway, similar to what has been observed with the more widely known HPV-16. This is important because it suggests that these HPV types may play a role in the development of non-melanoma skin cancers.
Who this helps: This benefits patients at risk for non-melanoma skin cancers.
Combined insulin pump therapy with real-time continuous glucose monitoring significantly improves glycemic control compared to multiple daily injection therapy in pump naïve patients with type 1 diabetes; single center pilot study experience.
2007
Journal of diabetes science and technology
Lee SW, Sweeney T, Clausen D, Kolbach C, Hassen A +3 more
Plain English This study explored how well a combination of insulin pump therapy and real-time continuous glucose monitoring works for adults with type 1 diabetes who had not used an insulin pump before, compared to those who continued with daily insulin injections. The findings showed that those using the insulin pump improved their blood sugar levels significantly, with a drop in average hemoglobin A1c from 9.45% to 7.4%, while the daily injection group improved from 8.58% to 7.5%. This matters because it demonstrates that newer technology can lead to better management of diabetes without causing low blood sugar episodes.
Who this helps: This helps patients with type 1 diabetes who struggle to manage their blood sugar levels.
Follistatin serum concentrations during full-term labour in women--significant differences between spontaneous and induced labour.
2007
Reproduction (Cambridge, England)
Rae K, Hollebone K, Chetty V, Clausen D, McFarlane J
Plain English This study looked at the levels of a protein called follistatin in pregnant women during different types of labor—spontaneous, induced, and planned cesarean section. Researchers found that women who went into labor spontaneously had higher levels of follistatin, peaking at about 57.9 ng/ml during labor, compared to those who were induced (maxing out at 26.9 ng/ml) and those who had a cesarean (which had a consistent level of 18.53 ng/ml). Understanding these differences is important because it could help explain how labor starts and develop better methods to manage labor in expecting mothers.
Who this helps: This research benefits pregnant women and healthcare providers.
Development of a comprehensive assessment toolbox for stroke.
1999
Clinics in geriatric medicine
Duncan PW, Lai SM, van Culin V, Huang L, Clausen D +1 more
Plain English Researchers at the University of Kansas Medical Center created a comprehensive assessment toolbox for evaluating stroke patients. This toolbox includes a range of assessments selected based on established guidelines and research findings, including the Stroke Impact Scale, to improve clinical management and evaluate patient outcomes. By using this toolbox, healthcare providers can better track patients' progress and enhance the quality of stroke care.
Who this helps: This benefits stroke patients and their doctors.