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

11 Made to Stick Why Some Ideas Survive and Others Die 6 Principles of Sticky Ideas - Simple - Unexpected- crash at the end of the car commercial. - Concrete - Credibility- the ability to test. Before you vote ask yourself if you are better off today than you were 4 years ago- Reagan. - Emotions - Stories Curse of knowledge- we find it hard to imagine not knowing what we have learned. Can’t imagine what it’s like not to understand a certain concept that we accept as fact Previous Next

< Back Guts on the Floor and Exposed Spine Patient #1 A 32-year-old male was involved in a head-on motor vehicle collision. He was ejected and pinned between two vehicles. He was brought in by EMS and on arrival to the trauma bay, he was covered with a sheet. When he was transferred to the gurney, it was clear that there was something unusual. He was eviscerated with a large wound in his right lower abdomen just above his inguinal ligament, and his intestines were entangled in his clothing. Patient #2 A patient was brought in by EMS following a motorcycle accident with a report of "exposed spine". Primary survey unremarkable, hemodynamically stable. FAST revealed fluid in the abdomen. A secondary survey revealed multiple extremity abrasions. When the patient was log rolled, he was noted to have a full-thickness degloving injury of the soft tissue and partial avulsion of the back musculature with exposed spinous processes. What are the management priorities? Prioritize primary and secondary survey, treat life-threatening injuries first. Secure airway. Evaluate for concomitant injuries, including thoracoabdominal injuries, requiring emergent surgical intervention. The challenge of Distracting injuries Remember- very painful or frightening injuries may distract from pressing clinical priorities. Regardless of how horrifying or novel an injury is, the goal of rapid evaluation and management of trauma patients is to identify and treat the most life-threatening injuries first. Remember to evaluate the airway, breathing, and circulation, and don't be concerned with the exposed intestine until you have ensured the patient doesn't have a pending loss of airway, tension pneumothorax, cardiac tamponade, etc. Control active arterial hemorrhage. Don't let the patient die from an unsecured airway while you are frantically attending to grass and flecks of wood and rock covering the exposed back muscle overlying the spine. Previous Next

12 Barking Up The Wrong Tree The Surprising Science Behind Why Everything You Know About Success Is (Mostly) Wrong - Good grades in school- likely to be a "rule follower", and less likely to be innovative, think outside the box. - Introverts are more likely to be experts, extroverts tend to make more money (socializing, "networking"). We should look at "networking" as "making friends". This disputes the "nice guys finish last"... - Match your strengths/ passion/ skill to the right context. - Flattery (sucking up to the boss) can work in the short term, but in the end, when people see their colleagues/ neighbors/ etc cutting corners and reaping benefits, this leads to a general collapse into distrust and rule-breaking. - IQ only matters up to a certain point, but then it yields diminishing returns. After that, hard work is what makes the difference. - Tradeoffs- every hour that you spend working is an hour spent away from other things (family, hobbies). In this age of constant accessibility, you have to decide to leave work behind (ignore your emails when you're at your kid's ball game). - Gratitude in relationships- on their deathbed, people regret working too much and not saying thanks to the people in their life. - Some helpful things I learned...please note that tact and delivery matter and these are not appropriate in every scenario. - When someone is getting upset or frustrated and starts yelling, "Please speak more slowly, I want to help." Or try, "What would you like me to do?" - When someone is upset, validate/ name their feeling. "Sounds like you’re angry/ hurt/ frustrated." If you're wrong, give them the chance to correct you. - Gratitude to relationships. Previous Next

< Back Pack the Guts https://video.wixstatic.com/video/3b6ff6_f29c38a601b645459ef002f51792fc87/1080p/mp4/file.mp4 Previous Next

4 Trauma References General Reference GCS .pdf Download PDF • 78KB Injury Severity Scores .pdf Download PDF • 195KB Snakebite Severity Score .pdf Download PDF • 102KB Staplers.Sutures.Mesh .pdf Download PDF • 530KB Hemostatic Agents .pdf Download PDF • 18KB TEG .pdf Download PDF • 12KB TBI Brain Injury Guidelines .pdf Download PDF • 213KB Brain Trauma Foundation .pdf Download PDF • 148KB DVT in TBI .pdf Download PDF • 137KB Spinal Cord ASIA Score .pdf Download PDF • 1.98MB

Common Measurement Conversions < Back Kitchen Hacks #3 Common Measurement Conversions Powdered Milk Reconstitution Use volume of water equivalent to desired milk volume. 1 Cup Milk= 3 Tbsp Powdered Milk= 45 mL 3/4 Cup Milk = 2.25 Tbsp Powdered Milk 2/3 Cup Milk = 2 Tbsp Powdered Milk= 30 mL 1/2 Cup Milk = 1.5 Tbsp Powdered Milk 1/3 Cup Milk = 1 Tbsp Powdered Milk= 15 mL 1/4 Cup Milk = 3/4 Tbsp Powdered Milk Measuring Spoon Conversions 1/2 tsp= 2.5 mL 1 tsp= 5 mL 1 + 1/2 tsp= 1/2 Tbsp= 7.5 mL 2 tsp= 10 mL 3 tsp= 1 Tbsp 6 tsp= 2 Tbsp= 1/8 c Liquid Measurement Conversions 1 fluid ounce= 2 Tbsp= 6 tsp 2 fluids ounces= 4 Tbsp= 1/4 cup 2+2/3 fluid ounces= 5 Tbsp + 1 tsp= 1/3 cup 4 fluid ounces= 8 Tbsp= 1/2 cup 6 fluid ounces= 3/4 cup 8 fluid ounces= 1 cup 16 fluid ounces= 2 cups= 1 pint 4 cups= 2 pints= 1 quart 4 quarts= 1 gallon Substitute dry for fresh spices 1:3 of dry:fresh 1 tsp dry= 1 Tbsp fresh Previous Next

[Editorial inspired by @kari_jerge] Why Don't They Believe Us? < Back [Editorial inspired by @kari_jerge] Seen on Twitter recently: Troll: I demand pictures of your full ICU to prove to me it’s full Female surgeon: None of us owes you a damn thing. Especially not pictures that will get us fired. But I’ll get right on that… What do you do if you accidentally injure yourself while working or making home improvements? Do you call 911 or have someone drive you to the ER? What do you do if you have high blood pressure, or diabetes, or depression? Do you go to a primary care doctor? What do you do if you have severe arthritic hip pain that doesn't resolve with conservative (non-operative) management? Do you consider talking to an orthopedic surgery about a hip replacement? I don't know what portion of the population inherently trust the medical community, but for the remainder of this editorial, I will presume that it's a majority. For those that don't, this doesn't apply. If you don't trust modern medicine, I won't convince you that you should trust our reports about this pandemic. Let's assume you accept modern medicine, including visiting the emergency department, having a primary care doctor, taking prescription medicine, and any of the other various diagnostic tests, consultations, and treatments. If this is the case, why would you think we would voluntarily try to deceive you about the capacity and occupancy of our ICU facilities? Why would so many medical community leaders actively speak out with a nearly singular voice to spread a lie? Ranging from the widely known Dr. Sanjay Gupta to a wide assortment of medical providers in many specialties. We have nothing to gain from building this whole façade. This isn't just a few people speaking up. This is a monumental effort to warn people. Social media has given a voice- and many have worked very hard to dispel the myths spread by many loud voices that continue to spread falsehoods. We have nothing to gain. You trust us to save your life when you have a heart attack, need emergency surgery, or care for you when you're severely ill from any matter of diseases. We haven't changed as a community to collectively spread these myths. It really is as bad as we say. We genuinely don't get paid more for patients who die from COVID. We don't have adequate PPE. We aren't lying. If you continue to deny reality, we will still care for you or your family and friends, in the unfortunate case you become ill, because that's what we do. We are just hoping that we will have the resources you need. And if we stretch our personnel any thinner, we will not have enough nurses and providers to care for you. We are the last hope. Don't make choices you'll regret. Previous Next