Clara Mosquera-Lopez's research while affiliated with Oregon Health and Science University and other places

Publications (26)

Article
Digital twin technology is emerging as a transformative paradigm for personalized medicine in the management of chronic conditions. In this article, we explore the concept and key characteristics of a digital twin and its applications in chronic non-communicable metabolic disease management, with a focus on diabetes case studies. We cover various t...
Article
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italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Objective: Artificial intelligence and machine learning are transforming many fields including medicine. In diabetes, robust biosensing technologies and automated insulin delivery therapies have created a substantial opportunity to improve health. Whil...
Article
Objective Nocturnal hypoglycemia is a known challenge for people with type 1 diabetes, especially for physically active individuals or those on multiple daily injections. We developed an evidential neural network (ENN) to predict at bedtime the probability and timing of nocturnal hypoglycemia (0-4 vs 4-8 h after bedtime) based on several glucose me...
Article
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Background People with multiple sclerosis (PwMS) fall frequently causing injury, social isolation, and decreased quality of life. Identifying locations and behaviors associated with high fall risk could help direct fall prevention interventions. Here we describe a smart-home system for assessing how mobility metrics relate to real-world fall risk i...
Article
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The transition from pregnancy into parturition is physiologically directed by maternal, fetal and placental tissues. We hypothesize that these processes may be reflected in maternal physiological metrics. We enrolled pregnant participants in the third-trimester (n = 118) to study continuously worn smart ring devices monitoring heart rate, heart rat...
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Background: Exercise can rapidly drop glucose in people with type 1 diabetes. Ubiquitous wearable fitness sensors are not integrated into automated insulin delivery (AID) systems. We hypothesised that an AID can automate insulin adjustments using real-time wearable fitness data to reduce hypoglycaemia during exercise and free-living conditions com...
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We present a robust insulin delivery system that includes automated meal detection and carbohydrate content estimation using machine learning for meal insulin dosing called robust artificial pancreas (RAP). We conducted a randomized, single-center crossover trial to compare postprandial glucose control in the four hours following unannounced meals...
Article
Background: Physical activity (PA) can cause increased hypoglycemia (glucose <70 mg/dL) risk in people with type 1 diabetes (T1D). We modeled the probability of hypoglycemia during and up to 24 h following PA and identified key factors associated with hypoglycemia risk. Methods: We leveraged a free-living dataset from Tidepool comprised of gluco...
Article
Introduction: DailyDose is a decision support system designed to provide real time dosing advice and weekly insulin dose adjustments for adults living with type 1 diabetes using multiple daily insulin injections. Materials and methods: Twenty-five adults were enrolled in this single-arm study. All participants used Dexcom G6 for continuous gluco...
Article
DailyDose is a smart-phone decision support system developed at Oregon Health & Science University that uses Dexcom G6 CGM and Medtonic’s InPen. The app calculates insulin doses using CGM value and trend, insulin-on-board, carbohydrate amount, and exercise information. Insulin dosing and carbohydrate intake recommendations before and after exercise...
Article
DailyDose is a decision support system developed at Oregon Health & Science University designed for people with T1D on MDI to improve glycemic control. It connects with Dexcom G6 and Medtronic's InPen. DailyDose runs on a smartphone and calculates insulin doses using CGM value and trend, IOB, carbohydrate amount, and exercise information. The syste...
Article
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Prevention of hypoglycemia (glucose <70 mg/dL) during aerobic exercise is a major challenge in type 1 diabetes. Providing predictions of glycemic changes during and following exercise can help people with type 1 diabetes avoid hypoglycemia. A unique dataset representing 320 days, and 50,000+ time points of glycemic measurements was collected in adu...
Article
Background In this work, we developed glucose forecasting algorithms trained and evaluated on a large dataset of free-living people with type 1 diabetes (T1D) using closed-loop (CL) and sensor-augmented pump (SAP) therapies; and we demonstrate how glucose variability impacts accuracy. We introduce the glucose variability impact index (GVII) and the...
Article
Background: Falls occur across the population but are more common, and have more negative sequelae, in people with multiple sclerosis (MS). Given the prevalence and impact of falls, accurate measures of fall frequency are needed. This study compares the sensitivity and false discovery rates of three methods of fall detection: the current gold stand...
Article
Falls are a major health problem with one in three people over the age of 65 falling each year, oftentimes causing hip fractures, disability, reduced mobility, hospitalization and death. A major limitation in fall detection algorithm development is an absence of real-world falls data. Fall detection algorithms are typically trained on simulated fal...
Article
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Type 1 diabetes (T1D) is characterized by pancreatic beta cell dysfunction and insulin depletion. Over 40% of people with T1D manage their glucose through multiple injections of long-acting basal and short-acting bolus insulin, so-called multiple daily injections (MDI)1,2. Errors in dosing can lead to life-threatening hypoglycaemia events (<70 mg d...
Article
While automated insulin delivery (AID) systems are now commercially available, over 40 percent of people with type 1 diabetes manage their insulin with multiple daily injection therapy (MDI). AID systems can improve time-in-range in adults, however it is not clear if optimal MDI therapy can achieve the same glycemic targets. We have previously show...
Article
Background: Despite new glucose sensing technologies, nocturnal hypoglycemia is still a problem for people with type 1 diabetes (T1D) as symptoms and sensor alarms may not be detected while sleeping. Accurately predicting nocturnal hypoglycemia before sleep may help minimize nighttime hypoglycemia. Methods: A support vector regression (SVR) mode...
Article
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Automated insulin delivery systems for people with type 1 diabetes rely on an accurate subcutaneous glucose sensor and an infusion cannula that delivers insulin in response to measured glucose. Integrating the sensor with the infusion cannula would provide substantial benefit by reducing the number of devices inserted into subcutaneous tissue. We d...
Article
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We conducted a pilot study to evaluate the accuracy of a custom built non-contact pressure-sensitive device in diagnosing obstructive sleep apnea (OSA) severity as an alternative to in-laboratory polysomnography (PSG) and a Type 3 in-home sleep apnea test (HSAT). Fourteen patients completed PSG sleep studies for one night with simultaneous recordin...
Article
Most people with type 1 diabetes use multiple daily injections (MDI) therapy, yet there are limited decision support tools for this population. We designed and evaluated a K-nearest-neighbors decision support system (KNN-DSS) that utilizes continuous glucose data and Bluetooth-enabled insulin dose capture devices to detect problematic glycemic patt...
Article
Patients with type 1 diabetes (T1D) do not produce their own insulin. They must continuously monitor their glucose and make decisions about insulin dosing to avoid the consequences of adverse glucose excursions. Continuous glucose monitoring (CGM) systems and insulin pumps are state-of-the-art systems that can help people with T1D manage their gluc...
Conference Paper
Full-text available
We present a method for automated diagnosis and classi�cation of severity of sleep apnea using an array of non-contact pressure-sensitive sensors placed underneath a mattress as an alternative to conventional obstructive sensors. Our algorithm comprises two stages: i) A decision tree classi�er that identi�es patients with sleep apnea, and ii) a sub...
Conference Paper
In this paper, we describe a novel portable test platform that can be used to test peripheral neuropathy either within a clinic or at home. The system, called the PeriVib, is comprised of (1) a small, custom vibration motor designed to apply a vibration stimulus to the toe with constant pressure to test sensation threshold, and (2) a custom smart-p...

Citations

... This was accomplished using a KNN algorithm to train the digital twin to recognize correlations between glucose levels and heart rate patterns. This has allowed for a method of indirectly monitoring glucose concentrations through an easily worn fitness tracker watch [23]. ...
... By utilizing continuous glucose monitors, patients can transition from intermittent to continuous glucose monitoring every few minutes with a tiny flex sensor inserted (such as Abbott's FreeStyle Libre 2 sensor and FreeStyle LibreLink APP) or implanted under the skin, thereby obtaining more comprehensive data on glucose fluctuations (Galindo & Aleppo, 2020;Lee et al., 2021). AI algorithms (in particular machine learning algorithms), through temporal analysis of blood glucose values, insulin dosage, and various meal related nutritional factors, can assist patients in predicting trends in glucose fluctuations (blood glucose prediction or blood glucose interval prediction) and provide real-time corresponding coping suggestions (such as appropriate diet, exercise, or insulin settings advice) based on these trends, thereby helping patients better manage their blood glucose levels (Annuzzi et al., 2023;Jacobs et al., 2024). The features of smart-BGM technology could be especially useful for patients who lack knowledge and methods, or lack self-efficacy. ...
... The study applied a novel AI algorithm, called Evidential Neural Network, to forecast the probability of hypoglycemia within an interval of 8 hours overnight. 64 Dr Moshe Phillip described the successful trajectory of his research in implementing an AI-based decision support system for diabetes management, comprising support to both clinicians and patients in optimizing insulin therapy. 22 In particular, a non-inferiority trial demonstrated that the frequent insulin dose adjustments suggested by a decision support system had the same quality and safety as those provided by clinical experts. ...
... With the ubiquity of the smartphone [15], and the increasing popularity of wearable smart devices [16] such as the smartwatch and the smart ring, the use of such tools for monitoring pregnancy-related signs and symptoms and greatly transforming current knowledge of this important metamorphosis is a potential reality. While the body of research involving personal DHTs in pregnancy is small, a number of small preliminary studies have shown potential utility in using wearables for tracking activity, sleep, and physiologic metrics such as HR and HRV as predictors of pregnancy-related outcomes such as preterm birth and delivery readiness [17][18][19][20][21][22][23]. ...
... Innovative approaches to improving performance of closed-loop systems include incorporation of signals from other wearables such as a smartwatch app that detects eating behaviour [63] or a fitness sensor for detecting exercise/ activity [64]. The potential clinical benefits of integrating these devices remains to be determined in larger and longer trials. ...
... To predict insulin underdosing during digestion, we use a food prediction deep-learning model from the literature [45]. Our version of this model is a generalization where we model any source of glucose, not just food, but the details of it are beyond the scope of this paper. ...
... Thanks to large-scale and ongoing research studies, we can do a better job at predicting hypoglycemia risk now that we understand what factors play the biggest role. The present study by Mosquera-Lopez and colleagues revealed that the key risk factors significantly associated with hypoglycemia included glucose and body exposure to insulin at PA onset, the low blood glucose index in the 24 hours before PA, and the intensity and timing of the PA (24). Additional work by Bergford et al. (5) identified similar yet different hypoglycemia risk factors, including lower starting pre-exercise glucose levels, decreasing glucose levels before exercise, and higher levels of insulin on board or active insulin pre-exercise. ...
... Some decision support systems have integrated these types of guidelines into smartphone apps to make it easier for patients to follow the recommendations. 22 However, clinical-based guidelines may not be suitable for all people as they do not account for individual differences in insulin sensitivity, diet and exercise responses that can have a major impact on glucose levels during and following exercise. 23 Digital twins are mathematical model representations of real-world phenomena. ...
... Penelitian lain yang dilakukan oleh Lu et al. (2021) pada pasien dengan gangguan metabolism di Cina menunjukkan bahwa latihan fisik dapat menurunkan kadar glukosa darah baik pada orang normal ataupun pada pasien DM. Peyerapan glukosa oleh otot akan meningkat seiring dengan kegiatan atau latihan fisik yang dilakukan, sehingga hal inilah yang berperan dalam penurunan kadar glukosa darah (Asfaw and Dagne, 2022;Tyler et al., 2022;Liu et al., 2024). ...
... In addition, the authors in [232] performed their research in determining the heart condition based on its sounds and 20 VOLUME 4, 2016 This article has been accepted for publication in IEEE Access. This is the author's version which has not been fully edited and content may change prior to final publication. ...