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10 Loonshots How to Nurture the Crazy Ideas That Win Wars, Cure Diseases, and Transform Industries - S type and P type loonshots. Innovators (creating loonshots) have to co-exist with the “businessmen”- you can’t just segregate different groups. The innovators need the company to make a profit so they can continue to take risks and make discoveries. And the business needs to nurture loonshots. - In case you were wondering how polarizing crystals were discovered. Or check out this article in Science magazine. - Bad decisions may occasionally result in good outcomes. But you need to analyze wins- you might not be so lucky next time. - Good decisions may result in bad outcomes. You made the best decision with the information at your disposal. In those same circumstances, you’d make that same decision. - How do crickets synchronize their chirps? - Percolation. A mathematical explanation for predicting events based on an inherent variable. - How do forest fires spread? Relevant variables- the distance between trees, humidity, wind. - How do pandemics start? How appropriate…depends on the proximity of individuals. - Phase transitions - Why do traffic jams occur? Just above a certain density of cars on the roads→ jam. - Emergence- innate characteristics of how a group functions based on the size (ie what patterns shift after the group reaches a size, although the precise size is variable for groups) While individuals remain puzzles, man in the aggregate becomes a mathematical certainty. Meaning- group dynamics are universal, regardless of the characteristics of the group members. 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

What is ACS? A day in the life of an Acute Care Surgeon. FAQs. ICU Rounds. Trauma Surgery. Acute Care Surgery What is Acute Care Surgery? Medicine, particularly surgery, has become increasingly specialized, with providers developing progressively narrower expertise. Previously, surgical critical care fellowship was the primary pathway for specialization in the management of critically ill and injured patients. Management of "sick" surgical patients, regardless of the underlying surgical etiology, requires flexibility in addition to width and breadth of knowledge to manage a wide spectrum of clinical challenges, including deranged physiology and complex surgical pathology. Balancing an acutely hemorrhaging patient, an elderly patient with severe poly-trauma, a ventilator-dependent patient with an acute abdomen...the list is endless. Acute Care Surgery (ACS) was brought about to ensure that there is access to a specialized physician that can manage a spectrum of critically ill patients, including trauma, emergency general surgery (EGS), and surgical rescue . Surgical rescue involves the management of procedural complications or clinical situations that require emergent surgical intervention: "airway emergency, hemorrhage, intestinal obstruction, perforated viscus, tube/line/device dysfunction, uncontrolled sepsis with a surgical etiology, visceral ischemia, and wound complication." Management can include the following interventions: "airway intervention, biliary repair/ reconstruction, bowel resection, hernia repair, hemorrhage control, source control of infection, surgeon-guided resuscitation, tube/line/device repair, and wound debridement."(1) Pillars of Acute Care Surgery 1. Kutcher ME et al. Surgical rescue: The next pillar of acute care surgery. J Trauma Acute Care Surg. 2017;82(2):280-286. 2. Kutcher M.E., Peitzman A.B. (2017) A History of Acute Care Surgery (Emergency Surgery). In: Di Saverio S., Catena F., Ansaloni L., Coccolini F., Velmahos G. (eds) Acute Care Surgery Handbook. Springer, Cham. Who Is Our Patient Population? Read More A Day in the Life of an Acute Care Surgeon Read More What happens during Surgical ICU (SICU) Rounds? Read More Who is on the Trauma Team? Read More What happens in the trauma bay? Read More The Trauma Bag Read More Frequently Asked Questions Read More Definitions Read More More Information on Acute Care Surgery Read More

Brain Death and Organ Donation End of Life Issues < Back Brain Death and Organ Donation Death can be uncomfortable and challenging to face/ navigate. Here are some of the situations that can arise surrounding the issue of death and organ donation. - Is resuscitating a patient with a devastating TBI for organ donation preservation justified? It may seem opportunistic and NOT focused on the dignified care of the patient- but it the patient’s desire would be to donate, preserving that option DOES honor their wishes. - If a patient is declared dead, specifically brain dead or death by neurologic criteria, and they previously expressed desire to be an organ donor (such as registration with an OPO or indicating their desires on their drivers license), legally the family can’t prevent the patient from donating. Even if the family opposes it, legally the patient should proceed to donation. But what about the risk of “bad press”? You’re honoring the patients wishes although that fact may be less apparent to the public compared to the anger expressed by the family members that the hospital “stole their loved one’s organs against their wish” or even worse, implying that the hospital “allowed” the patient to die so they could use their organs. - You don't need consent to perform a brain death test. 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

< Back The Trauma Bag Why was there a need for a trauma bag in the hospital? As an acute care surgeon responding to trauma activations, airway emergencies, and a variety of other hospital surgical emergencies, there are a handful of supplies that I always have with me. The two basics are a scalpel for surgical airways and trauma shears (classically used to remove clothes in the trauma bay, but I seem to find more uses all the time). Eventually, I added a Kelly clamp to my armamentarium- handy for disconnecting or unscrewing a wide variety of impossibly tight connections or securing something in place. During the COVID Pandemic, numerous changes were made in our hospital to minimize infection transmission. Unfortunately, several of the modifications had unintended negative consequences. When we stopped wearing white coats, we lost our pocket space for stashing scalpels and shears. We also carried more gear, including eye protection and N-95 masks (carried in a brown bag when not worn). Many surgeons adapted by using an assortment of bags, such as sling backpacks or CamelBak cases. My own choice is this fanny pack , which draws many compliments! The next challenge was the relocation of supplies from the wall of our trauma bay onto shelves in the hallway. Team members had to leave the trauma bay, locate which cart the item was on, and then scan for the item, which created delays. This disrupted communication as well because team members missed changes when they were outside the room. Another hurdle that existed even before the pandemic was the array of different names for the same item. Most people who place cotton-tipped applicators in their ears after their shower call them by the brand name “Q-tip”…they are actually called “cotton tip applicators” or “CTA”. **Note- don’t use Q-tips in your ears!** Drop the Q-tip! Why ENTs are begging you to leave your ears alone. The surgeon might ask for 4x4s, which is what we call gauze in the operating room. Some say "Quik-Clot” while others know the product by the name “Combat Gauze”. Sutures are a whole other bag of worms…do you use silk or Ethibond to secure your chest tube? Curved or straight needle? Countless times, the trauma chief is managing the trauma and when someone calls for a suture, their attention is often diverted to advising the person reaching into the suture box on the wall.…"no, the one to the left, top row." It’s not always easy to tell from the box what the suture and needle look like. In addition to the elimination of white coats, relocation of commonly used supplies outside the trauma bay, and different names for supplies, I noticed that several key items were frequently used and they seemed to be unreasonably challenging to locate in a timely fashion. Combat Gauze, Coban, specific suture on a specific needle, etc. Therefore, I created a backpack of supplies that I carry when on call. What does this bag do? This bag was created from my perception of a necessity to ensure specific supplies are readily available when responding to surgical emergencies. A Level 1 trauma center is equipped with the highest level of resources and personnel to manage the most complex patients, and our resources and patient population dictate what supplies are needed on a routine basis. My focus was on supplies that are (1) frequently used, (2) unique and not readily available in all locations where they are used, and when they are required, (3) delays in employment are remarkably morbid, and (4) portable. Why didn’t I include tourniquets? They’re frequently used and delays in employment are morbid, but patients typically have them in place on arrival and if not, they are readily available in the trauma bay. Why didn’t I include chest tubes? They are frequently used and delays in employment are morbid, but they are relatively widely available. In addition, the life-threatening physiology of hemothorax or pneumothorax can be resolved with a finger thoracostomy using a scalpel and Kelly (essentially the same process as placing a chest tube, but stopping at the step of a finger sweep in the thoracic cavity, releasing massive hemothorax or tension pneumothorax). Why didn’t I include a REBOA kit? This is a controversial topic. However, in the situation where resuscitative thoracotomy is deferred in favor of REBOA, rapid employment is ideal. However, this device is not frequently used at our facility. Paper clips? In a trauma bag? Yes, paper clips. They are used to mark wounds for creating a road map of the trajectory. What DOESN’T this bag do? This is NOT an all-inclusive bag for responding to all emergencies. It should not be considered a guide for pre-hospital emergency response, non-surgical emergencies, or any situations outside of the specifications reviewed above. There are other response teams in the hospital that have different supplies. For example, we have ICU nurses that respond to rapid response or code blue situations, and they carry critical care transfer bags. I don’t know the list of supplies that they carry, but here is a sample of potential contents of a “transfer bag”. In summary, my trauma bag is focused on specific needs that I perceived based on my daily work at my facility. If you perceive a need for a similar tool at your facility, I would encourage you to develop a supply list tailored to your needs. Trauma Bag- Supply List Personal Protective Equipment Blue gown, non-sterile (2) Medium gloves Mask with eye shield (1) Sterile Supplies for Procedures Pack of blue towels (1) Stapler (1) Sterile gown (1) Small Chloraprep (2) Laceration tray (1) Dressings and Hemostatic Agents Gauze, 4x4 (2) Surgicel, 2 in x 3 in (4) Quik-Clot, 3 in x 4 yds (3) Kerlix, 3.4 in x 3.6 yds (3) Kerlix, 4.5 in x 4.1 yds (1) Coban, 4 in x 5 yds (1) Large Tegaderm (4) Sutures and Instruments #1 Ethibond, curved needle (8) #0 Silk, straight needle (4) #0 Silk, curved needle (1) #2-0 Silk, curved needle (2) #2-0 Vicryl, curved needle (5) Skin stapler (1) Adsons (1) Kelly clamp (2) Needle driver (1) Laceration tray (1) Scalpel #10 (1) Scalpel #11 (1) Miscellaneous Cotton tip applicators (3) Tongue Depressors (2) Paper clips Disclaimer: This was created early in the pandemic, while I was a fellow at a different institution. 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

< Back Vent Mgmt #4: All Together Choosing a mode Controlled- patients who aren't generating breaths. PC, VC. Most common mode at initiation of MV. SIMV- patient generating some breaths, but still needs significant mechanical support. Spontaneous- not frequently used at initiation, but can be used for patients with airway obstruction and preserved lung function. How to set initial parameters TV (6-8 mL/ kg predicted body weight) [lung protective ventilation] RR 10-14 FiO2 often start at 100%, but quickly weaned unless severely hypoxic Inspiratory:expiratory ratio typically 1:2 Flow- typically set @ 60L/min, can increase if the patient is in distress or has a high minute ventilation How to adjust parameters based on arterial blood gas results Low PaO2 (low arterial oxygen content)- increase FiO2, increase mean airway pressure Markedly elevated PaO2 (hyperoxia)- decrease FiO2 Low PaCO2 (low arterial carbon dioxide concentration)- decrease TV or RR High PaCO2 (high arterial carbon dioxide concentration)- increase TV or RR *For more details, check out these resources: Lectures: Critical Care: Respiratory Failure Lectures: Critical Care: Vents Other principles of mechanical ventilation VAP bundle- elevated head of bed, oral care Daily awakening and spontaneous breathing trials Previous Next

< Back Free Fluid in the Abdomen A 62-year-old male presents following a motor vehicle collision in which he was an unrestrained driver. He was intubated in the trauma bay for decreased mental status. A focused assessment with sonography for trauma (FAST) was performed, which did not reveal intra-abdominal fluid. Computed tomography (CT) of the head demonstrated minimal intra-cranial injury. CT of the abdomen and pelvis (see below) revealed decreased blood supply to the left kidney, small irregularity of the splenic contour, and a moderate amount of free fluid in the abdomen and pelvis. Hounsfield units are consistent with simple fluid. CT of the abdomen and pelvis https://video.wixstatic.com/video/3b6ff6_b03419943e9941d281c3d8f0b800e37f/480p/mp4/file.mp4 What is the differential diagnosis for the free fluid in the abdomen? Free fluid due to trauma can be urine, enteric contents (bowel injury with spillage of succus) or blood. It is possible to have fluid present prior to the trauma, such as ascites from chronic liver disease. In this case, the free fluid in the abdomen had characteristics of “simple fluid,” based on Hounsfield units, suggesting that the fluid was not blood. In females, free fluid in the pelvis can be normal (physiologic fluid). However, free fluid is NOT normal in a male, and it's concerning for hollow viscus injury. What are the possible causes of decreased blood flow to the kidney? The renal artery can be injured in blunt trauma. Blunt injury can disrupt the layers of the artery wall, leading to thrombosis and decreased blood flow beyond the injury. He was admitted to the intensive care unit. A foley catheter was placed and demonstrated pink-tinged urine [NOT frank gross blood/ clots]. What are the possible causes of blood-tinged urine? Bloody urine indicates a traumatic injury to the genitourinary tract, anywhere from the kidneys down to the urethra. A CT cystogram was performed, which did not reveal any extravasation of contrast from the bladder. CT Cystogram https://video.wixstatic.com/video/3b6ff6_119074429b224cc98677d4f101fef666/480p/mp4/file.mp4 Next steps? Based on an unreliable physical exam and a normal CT cystogram, it is necessary to rule out bowel injury. The patient was hemodynamically stable and had normal laboratory values. He remained with a decreased mental status, and therefore serial abdominal exams were not a viable management plan. The patient was taken to the operating room and underwent diagnostic laparoscopy. His small bowel, colon, and mesentery were examined in there entirety and found to be completely normal. There was a small amount of clear thin fluid in the pelvis, but there was no evidence of bile staining or bleeding. After completing the evaluation of the gastrointestinal tract, we repositioned the patient in Trendelenburg. The pelvis was inspected, and it was quickly apparent that the patient in fact had a large defect in the dome of the bladder. We elected to proceed with a low midline laparotomy. The bladder was easily mobilized, and the extent of the defect was defined. The edges were grasped, and the defect was closed in two layers with absorbable suture. Postoperatively, we reviewed the preoperative CT cystogram. In retrospect, there was a suggestion of bladder irregularity. We reviewed the CT cystogram with the radiologist and there was no evidence of contrast extravasation. However, the bladder does not appear to have been completely distended with contrast. It is very atypical that a large bladder wall defect was not associated with contrast extravasation, and this highlights the importance and ensuring complete filling of the bladder with contrast. Evaluation and Management of Bladder Injuries Bladder injuries can occur from blunt or penetrating trauma. For example, bladder injuries can occur when blunt force is exerted on a full bladder or in the setting of a pelvis fracture. Diagnosis Gross hematuria is seen in most patients with bladder injuries. Cystography, either using plain x-ray or CT, is the diagnostic test of choice. Management The management of bladder injuries is based on location. Intra-peritoneal injuries require operative management. This is done in two or three layers with absorbable suture. A decompressive foley catheter is left following repair. Extra-peritoneal injuries can typically be managed non-operatively with a foley catheter for 10-14 days. Exceptions include large bony segments protruding into the bladder wall, associated rectal or vaginal injuries, bladder neck injuries, or an associated pelvic fracture undergoing operative intervention to prevent hardware contamination. Current guidelines recommend a cystogram before foley removal, except for the most uncomplicated injuries. Yeung LL et al. Management of blunt force bladder injuries: A practice management guideline from the Eastern Association for the Surgery of Trauma. J Trauma Acute Care Surg. 2019;86(2):326-336. Previous Next

< Back Fever...pending Evaluation of Fever Previous Next

3 General Surgery Lectures General Surgery .pdf Download PDF • 152.12MB Anorectal .pdf Download PDF • 1.55MB CT Scan and X-ray .pdf Download PDF • 564KB Vascular .pdf Download PDF • 13.57MB Suture .pdf Download PDF • 4.94MB

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