1,720,959 research outputs found
Breast Ultrasound
No full textThis video explores the relationship between normal breast anatomy, ultrasound imaging, and mammograms. By understanding these three aspects, medical students can improve their understanding of the normal breast, and medical professionals can improve their ability to diagnose and assess breast health. This work has been crafted with the support of Jacob Rivas for video editing.
©2024 CC-BY-NC-NDLoomis-Alvarez Video Series correlating structure, function, and clinical applications to facilitate medical student understanding of complex anatomical and physiological concepts. In this episode, we present a breast ultrasound with live imaging correlated with mammography. Breast cancer is the most common malignancy in women and the 5th leading cause of cancer death worldwide. Therefore, screening and early detection are critical. While mammography is the primary screening modality, ultrasound can be complementary and, in some cases, preferable for younger women and those with dense breast tissue. It is particularly useful in distinguishing cysts from solid masses. Ultrasound is also useful as a guide to biopsying and excising breast tumors. Ultrasound is portable, avoids ionizing radiation with its cancer risk, and is easily performed in an office setting. By following the position of the probe on the breast, juxtaposed with the ultrasound image, students and residents can improve their understanding of the structures of the breast, chest wall, and axilla, and they relate to the physical examination and diagnostic imaging.SHSU College of Osteopathic Medicin
The diagnostic ECG: Anatomical-clinical correlation
No full textUnlock the secrets of the heart! This video explores the connection between normal heart anatomy and how electrical impulses travel through its chambers by following a live ECG correlated with heart anatomy, electrical impulses, and various ECG leads. Understanding electrode placement and the electrical pathways is key for medical students to grasp healthy heart function and for medical professionals to diagnose and manage heart disease. Original artwork by Teresa Loomis. This work has been crafted with the support of Jacob Rivas for video editing.
©2024 CC-BY-NC-ND.In this episode of the Loomis-Alvarez Medical Video Series, we present an anatomical correlation of the most frequently used diagnostic test of heart function, the electrocardiogram (ECG). From the film industry to textbook publishers and apparel designers, ECG tracings are the hallmark of medical care. While patterns can be learned and even become readily recognizable, for many learning the ECG, correlating that oscillating line on an ICU monitor with the four-chambered heart once seen and held in the anatomy lab can be a formidable challenge. But, it is that correlation that can lead to a deeper, more nuanced understanding of the ECG. Heart disease being a leading cause of morbidity and mortality globally underscores the importance of this deeper understanding. The electrical rhythm captured by the ECG orchestrates the mechanical response of the heart muscle, propelling blood throughout the body to meet metabolic demands. When abnormalities in the heart's structure impact this vital electrical activity leading to mechanical irregularities in the pumping process, we can see that structural abnormalities are reflected in the ECG. Correlation of the heart’s physical structure with its physiologic function and electrical image captured from anterior, left, right, and inferior leads, is crucial for healthcare practitioners. To better understand normal electrical activity during the cardiac cycle we present the live capturing of an ECG. With the approximate location of a patient’s heart and conduction system drawn on their chest, leads are placed and the tracings are captured. Each lead’s tracing is correlated with illustrations of the heart’s chambers and conductive system within a skeletal model. Arrows are overlaid to show the primary direction of the electrical impulse towards, away from, or at right angles to the different leads. This basic understanding of ECG tracings can provide a solid foundation on which to build a more sophisticated and ongoing understanding of this profoundly useful diagnostic tool.SHSU College of Osteopathic Medicin
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Interpreting Compensatory Acid-Base Disturbances in Arterial Blood Gases
No full textJoin us on this educational journey as we unravel the mysteries of acid-base disturbances in ABGs with this Loomis-Alvarez Video Series episode! Designed by and for medical students, this video guides viewers through clinical cases involving acid-base disturbances. Become a master in interpreting acid-base compensatory compensatory mechanisms and widen your understanding of acid-base homeostasis and abnormalities. This work has been crafted with the support of Jacob Rivas for video editing.
©2024 CC-BY-NC-NDIn this episode of the Loomis-Alvarez Medical Video Series, we present a systematic approach for a critical interpretation of compensatory acid-base disturbances in Arterial Blood Gases (ABGs). In this video, we will decipher compensatory acid-base disturbances in arterial blood gases, a skill that helps diagnose and manage critical conditions. We will follow a systematic approach, first identifying if there is acidemia or alkalemia by looking at the pH. Then, we will determine the primary culprit – is it a respiratory issue reflected in the pCO2, or a metabolic problem evident in the HCO3- level? The fun part comes next: analyzing the compensatory response. Did the body attempt to adjust the pH with the respiratory system (by altering CO2) or with the metabolic system (through HCO3- changes)? By following this step-by-step analysis, our peers will walk you through the intricacies of making a proper diagnosis of the primary disorder and also understand how the body is trying to maintain and/or regain balance. This knowledge is key to making informed treatment decisions for your patients. Join us on this educational journey as we unravel the mysteries of acid-base disturbances in ABGs. Join us on this educational voyage as we demystify the complexities of acid-base disturbances in ABGs.SHSU College of osteopathic Medicin
How to Take a Diagnostic 12-lead ECG in a Male
No full textWelcome to this commonly used technique for understanding heart health and disease. Learn how to correctly position 12-lead ECG electrodes on male patients in this insightful episode of the Loomis-Alvarez Video Series. Tailored for medical students, this video provides a practical tutorial on crucial steps such as skin preparation, placement of limb leads (RA, LA, RL, LL), and positioning of chest leads (V1-V6), all demonstrated with clear anatomical references on a male subject. Enhance your ECG proficiency and develop the confidence to accurately prepare to determine the cardiac electrical activity. This work has been crafted with the support of Jacob Rivas for video editing.
©2024 CC-BY-NC-NDIn this episode of the Loomis-Alvarez Medical Video Series, we present the technique for mastering 12-lead electrocardiogram (ECG) Electrode Placement in male subjects. Within the field of cardiology, precision in electrode placement is paramount for capturing high-fidelity ECG readings. Our immersive laboratory demonstration mirrors a real-world scenario, equipping medical students with the practical expertise needed to confidently position electrodes for optimal signal acquisition. Embark on this comprehensive journey through each essential step, beginning with meticulous skin preparation to ensure secure electrode adhesion and seamless signal transmission. Navigate the intricacies of limb lead placement, strategically positioning electrodes on the arms and legs (RA, LA, RL, LL) to capture electrical activity accurately. Moreover, unlocks the secrets of chest lead placement, utilizing precise anatomical landmarks to guide the placement of electrodes (V1-V6) across the chest region. By immersing yourself in this practical activity, you will gain invaluable insights and hands-on experience vital for mastering the art of 12-lead ECG electrode placement.SHSU College of Osteopathic Medicin
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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