Publications by authors named "Inan O"

BACKGROUND Shiga toxin-producing Escherichia coli (STEC) causes serious bacterial illnesses from consuming undercooked meat and foods contaminated with feces. This study aimed to describe the characteristics of an STEC outbreak associated with hemolytic uremic syndrome (HUS) that emerged in Turkey and affected 21 adults. MATERIAL AND METHODS The medical records of 21 adult patients who were admitted to Ankara Bilkent City Hospital Internal Medicine Intensive Care Department with the diagnosis of HUS between July and September 2022 were retrospectively evaluated through the system.

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  • The study investigates the coagulation status of dogs with canine parvoviral enteritis (CPE), a severe condition that can lead to high mortality due to systemic inflammation and multi-organ dysfunction.
  • It involved 21 dogs diagnosed with CPE and 5 healthy controls, using thromboelastography (TEG) to analyze coagulation, showing significant differences in reaction times and clot dissolution rates.
  • The findings suggest that TEG-derived velocity curve (v-curve) parameters could be a better method to assess coagulation in CPE cases, offering new insights for diagnosis and treatment strategies.
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Joint acoustic emissions (JAEs) have been used as a non-invasive sensing modality of joint health for different conditions such as acute injuries, osteoarthritis (OA), and rheumatoid arthritis (RA). Recent hardware improvements for sensing JAEs have made at-home sensing to supplement clinical visits a possibility. To complement these advances, models must be improved for JAEs to function as generalizable predictors of joint health.

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This study was undertaken to determine if knee acoustic emissions (KAE) measured at the point of care with a wearable device can classify knees with pre-radiographic osteoarthritis (pre-OA) from healthy knees. We performed a single-center cross-sectional observational study comparing KAE in healthy knees to knees with clinical symptoms compatible with knee OA that did not meet classification criteria for radiographic knee OA. KAE were measured during scripted maneuvers performed in clinic exam rooms or similarly noisy medical center locations in healthy (n=20), pre-OA (n=11), and, for comparison, OA (n=12) knees.

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Background: It is important to predict which patients may require renal replacement therapy (RRT) at the time of initial presentation after crush injuries. There is limited data in the literature examining the predictors of RRT.

Methods: This study was conducted by evaluating 2232 patients who presented to our hospital following two major earthquakes of magnitudes 7.

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Objective: This study explores the potential of active vibrational sensing as a digital biomarker to identify and characterize inflammatory symptomatology in the Achilles tendon and its entheses in juvenile idiopathic arthritis (JIA), particularly enthesitis related arthritis (ERA), a subcategory of JIA.

Methods: Active vibrational data were non-invasively recorded using a miniature coin vibration motor and accelerometer. Twenty active vibration recordings from children diagnosed with JIA were used in the analysis.

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  • The study examined whether inhaled corticosteroids affect the severity and mortality of COVID-19 pneumonia among patients with chronic asthma and COPD.
  • It was a retrospective observational study, comparing two groups: one that used inhaled corticosteroids and one that did not, finding no significant difference in pneumonia severity between the groups.
  • Key risk factors for mortality included increasing age, mechanical ventilation, severe pneumonia, interstitial lung disease, and the use of prone position, while inhaled corticosteroid use did not correlate with increased severity or mortality.
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Objective: To develop a novel synthetic multi-modal variable capable of capturing cardiovascular responses to acute mental stress and the stress-mitigating effect of transcutaneous median nerve stimulation (TMNS), as an initial step toward the overarching goal of enabling closed-loop controlled mitigation of the physiological response to acute mental stress.

Methods: Using data collected from 40 experiments in 20 participants involving acute mental stress and TMNS, we examined the ability of six plausibly explainable physio-markers to capture cardiovascular responses to acute mental stress and TMNS. Then, we developed a novel synthetic multi-modal variable by fusing the six physio-markers based on numerical optimization and compared its ability to capture cardiovascular responses to acute mental stress and TMNS against the six physio-markers in isolation.

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The past several decades have seen rapid advances in diagnosis and treatment of cardiovascular diseases and stroke, enabled by technological breakthroughs in imaging, genomics, and physiological monitoring, coupled with therapeutic interventions. We now face the challenge of how to (1) rapidly process large, complex multimodal and multiscale medical measurements; (2) map all available data streams to the trajectories of disease states over the patient's lifetime; and (3) apply this information for optimal clinical interventions and outcomes. Here we review new advances that may address these challenges using digital twin technology to fulfill the promise of personalized cardiovascular medical practice.

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Body motion tracking for medical applications has the potential to improve quality of life for people with physical or speech motor disorders. Current solutions available in the market are either inaccurate, not affordable, or are impractical for a medical setting or at home. Magnetic localization can address these issues thanks to its high accuracy, simplicity of use, wearability, and use of inexpensive sensors such as magnetometers.

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Introduction: : Immune responses against Coronavirus (SARS-CoV-2) may be highly complex. It has been suggested that T-cell fatigue develops due to continuous stimulation of T-cells by SARS-CoV-2 in Coronavirus disease-2019 (COVID-19). It was aimed to assess peripheral lymphocyte subsets and T-cell exhaustion in various clinical courses of the disease in patients diagnosed with COVID-19.

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Objectives: The study aimed to evaluate the correlation between the clinical disease activity of axial spondyloarthropathy (axSpA) and magnetic resonance imaging findings of the sacroiliac joint.

Patients And Methods: Thirty-two patients (21 males, 11 females; mean age: 39.3±9.

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Background: This study sought to examine the effect of antithrombotic use on clinical outcomes in non-variceal upper gastrointestinal bleeding (UGIB).

Methods: Patients consecutively diagnosed with non-variceal UGIB between February 2019 and September 2020 were divided into two groups based on their antithrombotic use: users and non-users. Using propensity score matching (PSM) and multivariable regression analyses, the impact of antithrombotic use prior to UGIB presentation on clinical outcomes was examined.

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Background: Posttraumatic stress disorder (PTSD) causes heightened fight-or-flight responses to traumatic memories (i.e., hyperarousal).

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  • * A deep learning model utilizing the U-Net architecture has been created to effectively clean SCG signals affected by walking-induced noise, showing a 90% similarity improvement to clean signals.
  • * After applying the model, heart rate estimation accuracy showed significant improvements, with mean absolute errors dropping to 1.21 BPM and RMSEs for aortic timing estimations also decreasing substantially, indicating better performance in health monitoring during daily activities.
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  • The study investigated the vaccination status and risk factors for ICU support among inpatients with breakthrough COVID-19 infections, categorizing them as fully or partially vaccinated.
  • A total of 516 patients were analyzed, revealing that hypertension, diabetes, and coronary artery disease were common comorbidities, with fully vaccinated patients showing a significantly lower need for ICU support.
  • The findings suggest that older age, specific health conditions, and incomplete vaccination increase the likelihood of requiring ICU care, highlighting the need for ongoing monitoring and booster vaccinations for at-risk populations.
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Objective: Real-time measurement of biological joint moment could enhance clinical assessments and generalize exoskeleton control. Accessing joint moments outside clinical and laboratory settings requires harnessing non-invasive wearable sensor data for indirect estimation. Previous approaches have been primarily validated during cyclic tasks, such as walking, but these methods are likely limited when translating to non-cyclic tasks where the mapping from kinematics to moments is not unique.

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Purpose: To evaluate and compare patient satisfaction levels in edentulous patients treated with different configurations of implant-supported prostheses as well as previous prosthesis experiences before implant treatment.

Materials And Methods: A study population of 142 patients was identified and separated into four treatment groups: group 1 comprised 43 patients treated with an implant-supported overdenture in the mandible and conventional complete denture in the maxilla; group 2 comprised 32 patients treated with implant-supported overdentures in the maxilla and mandible; group 3 comprised 26 patients treated with an implant-supported overdenture in the mandible and a fixed prosthesis in the maxilla; and group 4 comprised 41 patients treated with implant-supported maxillomandibular fixed restorations. Questionnaires asking about masticatory performance, pronunciation, comfort, and social ability were used to evaluate treatment outcomes.

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Sepsis is a major public health emergency and one of the leading causes of morbidity and mortality in critically ill patients. For each hour treatment is delayed, shock-related mortality increases, so early diagnosis and intervention is of utmost importance. However, earlier recognition of shock requires active monitoring, which may be delayed due to subclinical manifestations of the disease at the early phase of onset.

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Hypovolemic shock is one of the leading causes of death in the military. The current methods of assessing hypovolemia in field settings rely on a clinician assessment of vital signs, which is an unreliable assessment of hypovolemia severity. These methods often detect hypovolemia when interventional methods are ineffective.

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Tasks of daily living are often sporadic, highly variable, and asymmetric. Analyzing these real-world non-cyclic activities is integral for expanding the applicability of exoskeletons, protheses, wearable sensing, and activity classification to real life, and could provide new insights into human biomechanics. Yet, currently available biomechanics datasets focus on either highly consistent, continuous, and symmetric activities, such as walking and running, or only a single specific non-cyclic task.

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  • Patients with previous heart attacks (MIs) face higher risks of future events, especially when stressed, prompting the need for effective monitoring tools.
  • A new miniaturized patch designed to record multiple heart signals (ECG, SCG, PPG) has shown promising results in matching key ECG-derived features with those from a standard device (Biopac) during stress tests, indicating its potential reliability.
  • The strong correlation in data (e.g., heart rate and variability) suggests that this patch could be clinically beneficial for monitoring post-MI patients and enhancing their outcomes, pending further evaluation.
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Millions around the world suffer from traumatic stress (stress caused by traumatic memories). Transcutaneous cervical vagus nerve stimulation (tcVNS) has been shown to counteract physiological changes associated with traumatic stress. However, little is known regarding the approximate timecourse of tcVNS effects.

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Background: Opioid Use Disorder (OUD) is an escalating public health problem with over 100,000 drug overdose-related deaths last year most of them related to opioid overdose, yet treatment options remain limited. Non-invasive Vagal Nerve Stimulation (nVNS) can be delivered via the ear or the neck and is a non-medication alternative to treatment of opioid withdrawal and OUD with potentially widespread applications.

Methods: This paper reviews the neurobiology of opioid withdrawal and OUD and the emerging literature of nVNS for the application of OUD.

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Post-traumatic stress disorder (PTSD) is an independent risk factor for developing heart failure; however, the underlying cardiac mechanisms are still elusive. This study aims to evaluate the real-time effects of experimentally induced PTSD symptom activation on various cardiac contractility and autonomic measures. We recorded synchronized electrocardiogram and impedance cardiogram from 137 male veterans (17 PTSD, 120 non-PTSD; 48 twin pairs, 41 unpaired singles) during a laboratory-based traumatic reminder stressor.

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