Scholarly Works @ SHSU

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Recent Submissions

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Measuring the Mean QRS Electrical Axis in an ECG
(2024) Garrison, Ryan, Osteopathic Medical Student; Dang, Kim Chi, Osteopathic Medical Student; Carter, Reagan, Osteopathic Medical Student; Loomis, Mario, Associate Professor Clinical Anatomy; Alvarez, Diego, Professor Physiology and Pharmacology
In this episode of the Loomis-Alvarez Medical Video Series, we unlock the electrocardiogram (ECG) mastery in deciphering the Mean Electrical Axis of the heart by using different approaches. In this educational video, we dive into the intricacies of electrocardiography (ECG) to determine the mean electrical axis of the heart. Led by our medical students, this tutorial aims to equip students, residents, and enthusiasts alike with the knowledge and skills needed to accurately interpret ECGs. Throughout the video, viewers will be guided step-by-step through different approaches for calculating the mean electrical axis, a crucial aspect of ECG interpretation that provides valuable insights into cardiac health and function. Starting with a brief overview of the vectorcardiogram principle, the tutorial gradually progresses to analyze the information generated in an ECG and apply it to interpret waveforms and their relation with the vectorial movement of electrical cardiac depolarization defining in its path a mean electrical axis. Detailed instructions on how to determine an electrical axis are laid out and clinical implications from real-life examples are presented. Featuring clear explanations and illustrative diagrams this video offers a guide to mastering the calculation of the mean electrical axis. Whether you are a medical student or a medical resident, this tutorial is sure to enhance your ability in ECG interpretation and contribute to better patient care.
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How to Take a Diagnostic 12-lead ECG in a Male
(2024) Ramirez, Dana, Osteopathic Medical Student; Hapenciuc, Gabriel, Osteopathic Medical Student; Shillinglaw, Andrew, Osteopathic Medical Student; Loomis, Mario, Associate Professor Clinical Anatomy; Alvarez, Diego, Professor Physiology and Pharmacology
In 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.
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Interpreting Compensatory Acid-Base Disturbances in Arterial Blood Gases
(2024) Ramirez, Minerva, Osteopathic Medical Student; Ju, Diane, Osteopathic Medical Student; Yates, Christopher, Osteopathic Medical Student; Loomis, Mario, Associate Professor Clinical Anatomy; Alvarez, Diego, Professor Physiology and Pharmacology
In 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.
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Taking the ECG in the Clinical Medicine student laboratory-female version
(2024) Lesage, Kayla, Osteopathic Medical Student; Mackler, Matt, Osteopathic Medical Student; Brown, Sabrina, Osteopathic Medical Student; Stitle, Kyle, Osteopathic Medical Student; Loomis, Mario, Associate Professor Clinical Anatomy; Alvarez, Diego, Professor Physiology and Pharmacology
In this episode of the Loomis-Alvarez Medical Video Series, we present a peer-to-peer demonstration of the 6-lead and the 12-lead electrocardiogram (ECG) electrode placement in a female student. For a physician, mastering the skill of accurate electrode placement is crucial for obtaining high-quality ECGs. This peer-to-peer tutorial of a hands-on laboratory activity is designed to provide medical students with a practical understanding of the correct electrode placement for a standard 12-lead ECG in a female patient. It is important to master the skills while we provide a safe learning environment in the classroom for everyone. You will identify all the basic steps from skin preparation, for optimal electrode adhesion and signal transmission, to limb lead placement (positioning of the RA, LA, RL, and LL electrodes on the arms and legs), and chest lead placement (anatomical landmarks for placing electrodes V1-V6 on the chest) while ensuring that no unnecessary exposure of body parts occurs.
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Taking the ECG in the Clinical Medicine student laboratory-male version
(2024) Stitle, Kyle, Osteopathic Medical Student; Lesage, Kayla, Osteopathic Medical Student; Brown, Sabrina, Osteopathic Medical Student; Mackler, Matt, Osteopathic Medical Student; Loomis, Mario, Associate Professor Clinical Anatomy; Alvarez, Diego, Professor Physiology and Pharmacology
In this episode of the Loomis-Alvarez Medical Video Series, we present a peer-to-peer demonstration of the 12-lead electrocardiogram (ECG) electrode placement in a male student. For a physician, mastering the skill of accurate electrode placement is crucial for obtaining high-quality ECGs. This peer-to-peer tutorial of a hands-on laboratory activity is designed to provide medical students with a practical understanding of the correct electrode placement for a standard 12-lead ECG in a male patient. You will identify all the basic steps from skin preparation, for optimal electrode adhesion and signal transmission, to limb lead placement (positioning of the RA, LA, RL, and LL electrodes on the arms and legs), and chest lead placement (anatomical landmarks for placing electrodes V1-V6 on the chest).