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Life and Death Decisions in a Resource-Constrained Environment Blood Shortage < Back Life and Death Decisions in a Resource-Constrained Environment When resources aren't in short supply, patient care isn’t limited by access to resources. As we quickly noticed at the beginning of the COVID-19 pandemic, nationwide supply shortages can develop quickly. In addition to the continuously growing staff and supply shortage the nation is currently enduring, we now have a critical shortage of blood products. The categories of patients who receive blood transfusions are diverse, and my colleagues and I use this resource daily. So I'm going to ask the uncomfortable question. Have you ever been in a resource-limited environment where you were unable to provide every patient with the same level of care? Have you ever been in a difficult position to allocate supplies and medical care based on triage? And most recently, have you been forced to re-evaluate your transfusion practice in light of this severe blood shortage? Several months ago I had a tragic case of a young male who suffered penetrating abdominal and pelvic trauma. He had multiple injuries to his IVC, his right iliac as well as hollow viscus injuries. I had another trauma attending, a trauma fellow, and a chief resident in the operating room. We were simultaneously working in multiple body cavities. Initially, I was holding manual proximal aortic control at the diaphragmatic hiatus. This was modified to transthoracic aortic cross-clamp, which also permitted open cardiac massage. Unfortunately, despite 4 educated pairs of hands, the patient remained hemodynamically tenuous. We cross-clamped the aorta and continued aggressive blood product resuscitation. I lost track of how many products he received, but it was likely one of the highest volumes I've ever given a patient. I'm a young staff surgeon, and this was the first case where I was faced with the ethical dilemma of withholding further transfusion in the setting of surgical futility. He had injuries that we were working to control, and in isolation, each injury was easily survivable. However, he sustained a constellation of symptoms too severe to tolerate. Whenever the thoracic aortic cross-clamp was released, he became profoundly unstable. Inability to tolerate the removal of cross-clamp is incompatible with life. No one wants to be seen as giving up, admitting failure, or abandoning a patient. As I gain more experience, I become increasingly comfortable with uncomfortable situations. In the back of my mind, as each minute passed, I became progressively more cognizant of the fact that the patient's mortality was inevitable. I didn't verbalize this until much later in the case. But at one point in the case, when I heard the number of units of blood transfused, my sense that the patient was unlikely to survive became overwhelming. I was grateful to have a colleague with me to openly discuss the conflict of continuing to administer blood products in a patient with essentially 100% mortality. We are charged with caring for patients with the same level of care, indiscriminately- not withholding interventions based on our judgments of a patient's worthiness. Blood products are an extremely precious and limited resource, and shouldn't be used without thoughtful consideration. Verbalizing that continuing resuscitative efforts while a patient is still alive is not without consequence. There are people in the room who don’t have the same experience, who don’t understand that even though we can continue to fix injuries, further use of blood products would not help the patient. By extension, there could be a patient who needed blood to save their love who could be deprived access to that resource. It takes experience to make these difficult calls. So how do you gain this wisdom and how do you handle these situations? - You only gain this wisdom through experience. It can’t be taught, it can only be learned by facing similar situations. - Remember you're not working in isolation. You don’t have to make the decision alone. Enlist the support of colleagues and senior partners. - Verbalize your thoughts- this makes others in the room aware of the current clinical situation. This also can empower team members to offer suggestions. In challenging clinical situations, I commonly say "does anyone else have any ideas". Some teammates do not feel comfortable speaking up in a room of physicians/ surgeons, so this can open the floor for a frank discussion. Previous Next

14 Scienceblind Why Our Intuitive Theories About the World Are So Often Wrong Intuitive theories- our best guess as to why we observe the events we do and how we can intervene in those events to change them. Infer causality from our observations. Similar to historical theories- how we used to understand things before we had the ability to understand the reality (like heat as an “object” versus “energy”). Emergent process- system wide (no clear cause/ effect explanation), equilibrium-seeking, simultaneous, ongoing. Heat, weather, evolution are all emergent processes. Molecular theory, scientific theory. Holistic theory- matter is continuous and has heft and bulk Intuitive theories of the physical world Matter- substances are holistic and discrete, instead of particulate and divisible. Conservation- clay flattened, water poured from short fat glass to tall skinny glass. The difference between weight and heft, volume and bulk? Energy- heat, light and sound viewed as substance instead of emergent property. Why can you touch the 400 degree air in the oven but not the pan itself (without oven mitts)? The pan transfers heat better than air. How do we change from viewing “sound” as an “object” to viewing it as “energy”? First, we stop attributing permanence (noise doesn’t continue forever), then weight (clock doesn’t become lighter with each chime) and then mass (noise can pass through a wall, doesn’t have to maneuver around wall). Extra-missionist- rays go out of the eye and then return to create vision vs intro-missionist- rays enter the eye to create vision. Gravity- weight is an intrinsic property of objects instead of relation between mass and gravity. Objects don’t fall because they’re heavy- they fall when they don’t have upward force on them that exceeds gravity (center of gravity). Motion- force is something transferred between objections (“impetus”), instead of external factor changing the objects motion. What path will an object take- for example, a ball in a spiral slide- takes straight path after exiting, doesn’t gain an inherent “spiral” motion. Cosmos- earth is a motionless plane orbited by the sun. Changing of the tides, seasons (tilt of the earth as it revolves around the sun, the side closest to the sun is summer). Earth- continents and mountains are eternal and unchanging vs transient/ dynamic. Tectonic plates- similar land features on different coasts. Greenhouse effect and global warming- humans causing it, but the earth will live beyond us. Vitalism- living things possess an internal energy, or life force, that allows those things to move and to grow. Essentialism is the idea that an organism’s outward appearance and behavior are products of its inner nature, or “essence.” Intuitive theories of the biological world Life- animals viewed as psychological agents vs organic machines. Death= cessation of biological processes. Growth- eating is for satiation rather than nourishment, aging is a series of discrete changes vs continuous change. Vitalism- living things possess an internal energy, or life force, that allows those things to move and to grow. Essentialism is the idea that an organism’s outward appearance and behavior are products of its inner nature, or “essence.” Inheritance- parent-offspring resemblance viewed as nurture, vs transfer of genetic information. Illness- disease is due to supernatural causes, instead of microorganisms. Adaptation- evolution is the transformation of an entire population (butterflies become slightly darker with each generation) vs selective survival (darker butterflies survive to reproduce). Ancestry- species develop linearly (monkey→ ape→ human) rather than branching from common ancestor. Previous Next

1st day in radiology: your right is your left, your left is your right Radiologic Dyslexia < Back 1st day in radiology: your right is your left, your left is your right I have recently coined a new phrase. While showing my mom a picture, pointing out someone she had never met before, I commented, "he's the one on the right." Funny story, though- he was actually on the left side of the picture. I had to pause while I talked to my mom and reassure her that I know the difference between my right and my left. While scrolling through Twitter the other day, I was reviewing a question posed about an abdominal x-ray. Another Twitter user added a helpful hint by indicating "the right side of the circle" when pointing out an abnormality. I predicted he meant anatomical right (meaning the image's left side) based on my interpretation. We chuckled about the discrepancy between radiographic laterality and left-right differentiation in real life. I decided to designate this mix-up "radiologic dyslexia." Feel free to use this in the appropriate context! Previous Next

7 When The Scientific Secrets of Perfect Timing - We should capitalize on our natural circadian rhythms. What is your chronotype? - Premortem. Examine what you think could go wrong. Not getting a book written. Think of what could cause it. Not writing every day. Not keeping the editor updated. Think of how to change those to positive actions. He wrote six days a week and consulted his editor regularly. - Techniques for promoting belonging in your group? Email response time is the single best predictor of whether employees are satisfied with their boss. - Syncing to the heart- working in harmony with others makes it more likely we will do good. Previous Next

6 Start with Why How Great Leaders Inspire Everyone to Take Action - Explains the importance of developing a shared philosophy for business, teams, and frankly, any mission. It relays a vital concept, but the text is unnecessarily repetitive- it could be significantly shorter while maintaining the message. - Regarding a business model- your "why" is your basic underlying philosophy, motivation, and guiding principle, your "how" is your process, and your "what" is your product. - You can convince customers to buy your newest product, but you have to re-create your marketing with each novel concept. Loyal customers buy your product because they believe in your philosophy. Think about Apple. They don't sell a product. Apple customers will purchase the next Apple product, not because of the particular design or nuanced update, but because they believe Apple's "why." - Ask an employee or a teammate- what do you do? Is their answer a description of their daily tasks? Or is it a message, a principle that guides their action? - If your company's "what" becomes obsolete, your company becomes outdated. If your company was created to copy written text manually, you would be unlikely to adapt to the new technology that successfully automates the process. If your company's "why" was focused on the value of literature and facilitating easy access to books for everyone, this will allow you to remain relevant regardless of how the world changes. Previous Next

1 A Field Guide to Lies Critical Thinking in the Information Age - Explains common misuses of statistics and misrepresentation of probability. Use common sense as the first line of defense. This impacts advertising, criminal trials (what is the likelihood that the defendant is guilty based on the blood found at the scene vs whats the possibility that any other individual is guilty based on the blood found at the scene). - Post hoc ergo propter hoc- After this, therefore because of this. Because this event followed another event, the subsequent event must have been caused by the first event. We link events that might be temporarily related but aren't actually cause and effect. - Likelihood of two unrelated events both happening= probability of event 1 x probability of event 2→ lower than the probability of each event independently. Likelihood of flipping one head on a coin followed by flipping another head. - Likelihood of two related events- for example, the likelihood of freezing weather tonight and tomorrow night→ higher given the occurrence of freezing weather the first night. - Vaccines lead to autism? People look at the increased percentage of autism diagnoses. Autism was more frequently diagnosed because it became more understood. Autism is commonly diagnosed between 18-24 months and the MMR vaccine is given around 12 months. - Was 9/11 an inside job? Why did the towers collapse vertically? Easy to overwhelm with questions and theories designed to cast doubt on the events. But structural engineers never found anything suspicious about it. - Breast cancer. Pretest probability- occurrence in the population. 1/8 women develop BrCA. Mammograms can over-call diagnoses (false positive). - Positive test + confirmed diagnosis= true positive - Negative test + confirmed absence of diagnosis= true negative - Positive test + confirmed absence of diagnosis= false positive (low FP= high specificity) - Negative test + confirmed diagnosis= false negative (low FN= high sensitivity) Previous Next

Disclaimers for Vignettes Disclaimers This website is provided for educational and informational purposes only and although every effort has been made to present accurate information, this is not a substitute for professional advice. Always seek guidance from a qualified healthcare provider or physician for inquiries regarding medical conditions, treatments, or before embarking on any new healthcare regimen. Never disregard professional medical advice or delay in seeking it due to information found here. If you think you may have a medical emergency, call 911 or go to the nearest emergency room immediately. No physician-patient relationship is created by use of this website. The practice of medicine relies on using the best available evidence, but clinical scenarios often lack clear-cut answers. Every clinical situation is unique, and no single solution applies universally. Clinical guidelines attempt to provide recommendations that apply in most situations, but that are not one-size-fits-all solutions and they do not replace clinical judgment. The infinite variety of patient, disease, and environmental factors influencing clinical decision-making cannot be fully accounted for in medical literature. Therefore, any variance in the approach of physicians from what is presented here does not necessarily signify an error on their part. Some of the images on this website contain graphic content that may be disturbing or distressing to some audiences. Viewer discretion is advised. HIPPA- vignettes are presented to provide clinical education, with considerable care to prevent any patient from being identified. Protected health information and patient identifiers (name/ location/ date/ occupation/ contact information/ identifiable photos/ numerics such as SSN/MRN/insurance) have been withheld. Unique details have been removed from text and images. Details that don't impact the clinical case, such as age and gender, have been modified to obscure each patient's identity. Many stories are heavily modified to highlight the key learning points and some scenarios are complete fabrications. The scenarios span my entire 17 years of experience in the medical field, and they are seen on a routine basis in our field. I have not shared one-of-a-kind or sensational cases because the risk of disclosing identifiable details heavily outweighs any potential educational benefit. The views, opinions, and assertions expressed herein are those of the author and do not reflect the official policy or position of the Department of Defense. These scenarios are not designed to portray the comprehensive evaluation and management of acute care surgery patients. Many common steps are omitted, as the intent is to highlight unique learning points for different clinical scenarios. Trauma scenarios DO NOT teach all the basic principles of ATLS, so there is a minimal repetition of basic principles (primary and secondary survey). Any of the products found on this website are not specific endorsements. I do not receive any monetary compensation or non-monetary incentives for the sale of any items seen here.

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