What language are we speaking? Speaking Greek < Back What language are we speaking? Medicine has a language all its own. Sometimes we use formal words for common terms, like sputum or phlegm to refer to snot. But a lot of words are unique to the medical field. When speaking with patients and families, the most important thing is communicating effectively. Using a slew of foreign and formal words might sound impressive, but everyone will likely be more confused when you leave the room. After years of education and training, words and phrases in the medical dictionary become second nature. Our conversations with colleagues, consultants, and peers are frequently saturated with this unique lexicon. Sometimes this even spills into your conversations outside of work, and your family and friends might start to pick up some of your common work terms. Patients and their families are not fluent in the language of healthcare unless they are employed in healthcare or have experienced frequent interactions with the healthcare field, such as being a caregiver for an ill family member or suffering from a chronic illness. Once you learn something, it’s difficult to remember a time when you didn’t know. If you’ve worked in healthcare, it’s obvious that laparoscopic cholecystectomy means using tiny incisions and long instruments to remove the gallbladder through the belly button. But unless you’ve had one yourself or know someone who has had one, these words might have little meaning. This language barrier can be even more challenging in the stressful environment encountered in the ICU. Several factors create additional barriers to effective communication. 1. Patients in the ICU are sicker and the threat of death or serious disability is more apparent. This can create emotional distress that occupies or distracts families as they try to ask questions and get answers, impairing their ability to thoroughly understand, even if the healthcare team provides very detailed, comprehensive information. 2. When individuals receive bad news, they process/ remember very little after the initial shocking revelation. 3. The higher acuity and sometimes the need for urgent intervention can add time constraints. This creates an additional barrier to effective communication- having to convey the information and potentially obtain consent for treatment and procedures while balancing the ever-present demands of multiple urgent procedures and critical patients to attend to. Families can get information from different members of the healthcare team. Sometimes the nature of the conversation demands the skills of the most experienced provider. However, young trainees sometimes converse with families as well. It’s easy to forget the process of learning how to effectively communicate with families in difficult situations. Listening to phone conversations between team members and family can be enlightening. As young trainees are becoming much more facile with the unique language of the ICU, it can start to infiltrate these discussions. For example, imagine you are caring for a patient who was just admitted to the ICU with a severe traumatic brain injury. When you’re reporting to the accepting team, you’ll use words like subdural hematoma, midline shift, cerebral edema, and severe TBI. When discussing the patient's current clinical status, you might mention that they are over-breathing the ventilator or that they don’t have brainstem reflexes. When developing a management plan, you might discuss the utility of ICP monitoring and debate the use of a bolt or an EVD, the benefits of hypertonic saline versus mannitol for hyperosmolar therapy, whether or not to hyperventilate the patient and the potential for a craniectomy. While these will be readily understood by your colleagues, these are likely foreign terms for most family members. So here are some tips for talking to family and friends, especially during initial conversations. 1. Avoid unfamiliar medical terminology (for example: severe TBI, hypertonic saline). Instead, opt for descriptors such as “bad head injury” or “medication to protect the brain”. 2. Avoid unnecessary details. Don’t ramble on about everything that has happened, especially while they are waiting to hear if their loved one is alive or dead. After you’ve told them their family member is alive, they aren’t likely to hear much else. 3. Avoid revealing that a patient has died over the phone, especially in your initial discussion with the family. 4. Avoid acronyms (for example: TBI, GCS) 5. DO give them a chance to ask questions. 6. DO encourage them to write down their questions as they think of them and reassure them that they can ask questions throughout the process. Previous Next

< Back Vent Mgmt #2: Modes Mandatory Breaths Volume control (volume limited)- set TV and flow, pressure and inspiratory time are the dependent variables. Pressure control (pressure limited)- set inspiratory pressure and inspiratory time, volume and flow are the dependent variables. What is the downside of VC and PC? You can only control one parameter, and the dependent variable varies based on the patient's lung mechanics. For a patient on VC, if their lungs become less compliant, delivering the same tidal volume will generate higher pressure, increasing the risk of barotrauma. For a patient on PC, if their lungs become less compliant, the target pressure will be reached at a lower volume, so there is a risk of decreased ventilation (↑PaCO2). Pressure-regulated volume control (PRVC) is a hybrid mode that attempts to overcome this limitation. The target volume is delivered at the lowest possible inspiratory pressure by assessing the delivered tidal volume at the inspiratory pressure during each breath. What about inverse ratio (IR, IRV-PC) ? Increasing the inspiratory time relative to expiratory time increases mean airway pressure. This can be accomplished with pressure-controlled modes, where inspiratory time can be prolonged (normal ratio 1:2, IRV is when inspiratory time is greater than expiratory time). As discussed, MAP affects the surface available for oxygen exchange. This is why IR can be used to optimize oxygenation. Mandatory and Spontaneous Breaths Synchronized intermittent mandatory ventilation (SIMV)- a variation on VC or PC. The machine delivers mandatory breaths, but the patient can also control spontaneous breaths in between the mandatory breaths. Spontaneous Breaths Pressure support- spontaneous mode, the patient initiates breath, the ventilator provides support to overcome the resistance of breathing through the endotracheal tube, flow is adjusted to maintain the inspiratory pressure. The support is terminated when the flow decreases to <25% of peak flow. The patient controls duration and volume. *This is also a setting that can be adjusted in SIMV for assisting spontaneous breaths between ventilator breaths. Airway Pressure Release Ventilation (APRV)- invasive form of ventilation with BiPAP. The patient breaths spontaneously, alternating between a sustained time (time-high) at a set pressure (pressure-high) with a very brief release (time-low) of pressure (pressure low) to allow expiration. The goal is to maintain a higher MAP to optimize oxygenation. Previous Next

13 Maybe you Should Talk to Someone A Therapist, HER Therapist, and Our Lives Revealed Some of my favorite quotes Peace. It does not mean to be in a place where there is no noise, trouble or hard work. It means to be in the midst of these things and still be calm in your heart. (p. 289). HMH Books. Kindle Edition. “Between stimulus and response there is a space. In that space is our power to choose our response. In our response lies our growth and our freedom. (p. 289). HMH Books. Kindle Edition. Which is why, in the end, after several drafts and revisions, Julie decided to keep her obituary simple: “For every single day of her thirty-five years,” she wanted it to read, “Julie Callahan Blue was loved.” Love wins. (p. 313). HMH Books. Kindle Edition. Previous Next

< Back Intracranial Hypertension A 32-year-old male was an unhelmeted motorcyclist who was struck by a car and throw 20 feet. He had decreased alertness on the scene and was urgently transported to the hospital. On arrival to the ED, his GCS was 7 (E2V2M3). He was hemodynamically normal and secondary survey was only remarkable for diffuse road rash and a large scalp laceration. He was intubated for concern for inadequate airway protection. Chest x-ray revealed multiple left sided rib fractures, FAST was positive in the right upper quadrant and the pelvis x-ray was unremarkable. He was taken to the CT scanner for head, c-spine, chest, abdomen and pelvis imaging. He was transported to the trauma ICU as his images were reviewed. Head CT Case courtesy of Derek Smith. From the case rID: 169704. Imaging revealed a large right sided subdural hematoma. He has left lower rib fractures and a grade 3 splenic injury. Neurosurgery evaluated him upon arrival to the ICU. How is intracranial pressure monitored? The preferred method for ICP monitoring is with an external ventricular drain. This allows the dual function of monitoring ICP as well as allowing to treatment of elevated ICP via drainage of cerebrospinal fluid (CSF). What is a normal value for ICP? Normal ICP is <20 mmHg and treatment is recommended for sustained ICP >22 mmHg. Neurosurgery places an external ventricular drain. His opening pressure was 32, and his ICP ranges from 25-32 over the next few hours. He was in reverse Trendelenburg, and he was adequately sedated. His repeat head CT was unchanged. He had CSF drainage via his EVD. He was given 2 boluses of hypertonic saline. His ICPs improved, and were sustained at 18-20 mmHg. He develops hypotension, with systolic pressures in the 80s. What are some of the possible etiologies for hypotension, and how would you evaluate/ treat the various etiologies? Bleeding from his spleen→ urgent splenectomy. Hypotension is detrimental to TBI. Side effects from sedation medication→ decrease dosages or switch therapeutic agents, implement other treatment strategies Evaluation and Management of Traumatic Brain Injury The goal of the initial management of TBI is the prevention of secondary brain injury. Avoid hypotension and hypoxemia Target normal pulse oximetry, normal PaCO2 (35-45 mmHg) and PaO2 (≥100 mmHg), normal blood pressure (SBP ≥100), normal electrolytes, normal temperature, platelets >75K, hemoglobin >7 g/dL.[1] Treat pain and provide sedation as appropriate. Optimize patient positioning to promote cerebral venous drainage- elevate the head of the bed and ensure the cervical collar or endotracheal tube support is not too tight. Monro-Kellie Doctrine[2] Inside the bony skull, there is brain tissue, blood and cerebrospinal fluid. Increase in any one of these (tumor, hemorrhage, edema) requires a compensatory decrease in one of the other substances in order to maintain normal intracranial pressure (ICP). ICP rises when compensatory mechanisms fail. Elevated ICP leads to decreased cerebral perfusion pressure (CPP). CPP is the difference between mean arterial pressure and intracranial pressure, and serves as an additional measure of adequacy of cerebral perfusion [CPP= MAP – ICP]. This is similar to the concept of abdominal compartment syndrome- when intraabdominal pressure increases above a threshold, there is decreased organ perfusion. Initially, the brain is able to autoregulate and maintain cerebral blood flow (CBF) across a narrow range of CPP, but this compensation is also limited, and CBF decreases as CPP falls. The general target for CPP is ≥60 mmHg, but note that this may vary if cerebral blood flow autoregulation is impaired. Monitoring intracranial pressure (ICP) is not independently associated with improved outcomes. It does not replace serial neurologic exams. Clinical decision making based on the neurologic exam, the ICP, CT imaging and any other relevant information is the key to improving outcomes. There are several patient scenarios that should prompt consideration of ICP monitoring.[1,3] GCS ≤8 + structural brain injury on head CT GCS >8 + structural brain injury on head CT + high risk for progression (large/ multiple contusions, coagulopathy Severe TBI with a normal CT scan + at least 2 of the following- age >40 years, unilateral or bilateral motor posturing, or SBP <90 mm Hg. Progression of brain injury on repeat CT imaging Patients who require urgent surgery for extracranial injuries Clinical deterioration There is a tiered approach to treating elevated ICP.[1] At each tier, patients should continue to have close neurologic exams as well as interval repeat CT imaging of the head to rule-out the progression of hemorrhage. Tier 1- ensure optimization of analgesia and sedation, elevate head of bed, intermittent drainage of CSF. Tier 2- hyperosmolar therapy- mannitol or hypertonic saline. Consider advanced monitoring, including assessment of cerebral autoregulation and other markers of cerebral oxygenation. If utilizing advanced monitoring, consider hyperventilation to PaCO2 30-35 as long as cerebral oxygenation is maintained. Paralysis with neuromuscular blockade. Tier 3- decompressive craniectomy is a potential salvage therapy- may be associated with decreased mortality, but no improvement in neurologic outcomes.[4,5] Continuous infusion of neuromuscular blockade if there is a response to the test dose in Tier 2. Consider Barbiturate coma. Hypothermia and hyperventilation are no longer routinely recommended. Hyperventilation therapy can be used as a bridge to additional interventions. A study of hypothermia in severe TBI has shown no improvement in early neurologic outcome.[6] References ACS Committee on Trauma. American College of Surgeons Trauma Quality Improvement Program. Best Practices in the Management of Traumatic Brain Injury. 2015 Jan. Wells AJ et al. The management of traumatic brain injury. Surgery (Oxford). 2021;39(8):470-478. Carney N et al. Guidelines for the Management of Severe Traumatic Brain Injury, Fourth Edition. Neurosurgery. 2017 Jan 1;80(1):6-15. Cooper DJ et al. Decompressive craniectomy in diffuse traumatic brain injury. N Engl J Med. 2011 Apr 21;364(16):1493-502. Cooper JD et al. Effect of Early Sustained Prophylactic Hypothermia on Neurologic Outcomes Among Patients With Severe Traumatic Brain Injury: The POLAR Randomized Clinical Trial. JAMA. 2018;320(21):2211-2220 Sahuquillo J, Dennis JA. Decompressive craniectomy for the treatment of high intracranial pressure in closed traumatic brain injury. Cochrane Database Syst Rev. 2019 Dec 31;12(12):CD003983 Previous Next

< Back Pneumonia...pending Pneumonia Previous Next

< Back Pre-Peritoneal Packing When: blunt pelvic trauma with hemodynamic instability. How: 1. Low vertical midline incision, stop a short distance below the umbilicus. 2. Split rectus, retract laterally, the peritoneum is just behind the rectus. 3. Slide hand directly under the rectus- palm toward peritoneum and back of your hand toward rectus. Bluntly dissect laterally toward ASIS. 4. Retract rectus anteriorly, use your other hand to place rolled laps in the potential space you just developed [This how-to guide was designed in response to a query from @obcast ] References Smith WR et al. Retroperitoneal packing as a resuscitation technique for hemodynamically unstable patients with pelvic fractures: report of two representative cases and a description of technique. J Trauma. 2005 Dec;59(6):1510-4 Filiberto DM and Fox AD. Preperitoneal pelvic packing: Technique and outcomes. Int J Surg. 2016 Sep;33(Pt B):222-224. Previous Next

4 < Back Trauma Resources Society Guidelines American College of Surgeons (ACS) Trauma Quality Improvement Program (TQIP) Best Practice Guidelines Imaging Management of Traumatic Brain Injury Management of Orthopaedic Trauma Management of Geriatric Trauma Massive Transfusion in Trauma Recognition of Child Abuse, Elder Abuse, and Intimate Partner Violence Palliative Care Western Trauma Association Algorithms. Evidence-based critical decision algorithms in trauma. Pediatric Trauma Society. Guidelines and educational resources. Brain Trauma Foundation Guidelines. Concussion, prehospital and surgical management of TBI, pediatric TBI, prognosis in TBI, combat-related head trauma. Joint Trauma System: Clinical Practice Guidelines. Evidence-based guidelines developed by subject matter experts from both the military and civilian communities. Tutorials ER-REBOA PLUS Catheter , Prytime Medical. Quick Reference Guide. ER-REBOA PLUS Convenience Kit. ER-REBOA PLUS Catheter, Instrutions for Use. ER-REBOA PLUS Catheter, Product Video. Videos and Lectures Joint Trauma System: Emergency War Surgery Course. Lecture series based on JTS CPGs and the Emergency War Surgery Book. Trauma in a Flash. Brief videos on trauma topics, hosted by the Arizona Trauma Association. American College of Surgeons Resources Resources for Optimal Care of the Injured Patient, 2014. Framework for developing a trauma system. Compares the different resources available at Level 1, 2, and 3 verified trauma centers. "An ideal trauma system includes all the components identified with optimal trauma care, such as prevention, access, prehospital care and transportation, acute hospital care, rehabilitation, and research activities. Guidelines for Field Triage of Injured Patients Recommendations of the National Expert Panel on Field Triage, 2011. Basic algorithm for triage of trauma patients based on mechanism of injury, physiologic criteria, and anatomic region of injury. Stop the Bleed. Trains non-healthcare providers in point of injury treatment for massive hemorrhage. AAST Resources Brief Topic Reviews. COVID-19, Aspiration, Blunt Cardiac Injury, Blunt Splenic Injury, Child Passenger Safety, Clostridium Difficle, ICU Illness, Wound Care Instructions, Field Triage, Epidemiology and Injury Prevention, Mechanical Ventilation, Pelvis Injuries, Rib Fractures, Sports Concussions, Thromboembolic Disease, Trauma Systems, TBI Rehabilitation. CME Opportunities. Meet the Masters, high yield journal articles, in addition to countless other resources. Some are free, and some are $25 for non-members. Virtual Grand Rounds. AAST hosts virtual grand rounds, a web-based educational series Acute Care Surgery Fellow Educational Resources. 67 Educational Modules for ACS Fellows. Created by the ACS Committee. ONLY accessible by ACS Fellows. 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

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 Gunshot Wound to the Leg A 26-year-old male soldier sustained a gunshot wound to the right medial thigh. He had a compressive dressing that was placed prehospital. He arrived at the hospital and underwent a rapid primary and secondary survey. Initial X-ray Evaluation? Radiologic imaging. Evaluation for extremity vascular injury. He had active bleeding from the wounds. After plain films and initial stabilization, the patient underwent operative exploration of the vascular structures of his right lower extremity. His right femoral artery was intact. His right femoral vein was transected and there was a long segment of destroyed vein, which was treated with ligation. He underwent right lower extremity fasciotomy. This was followed by femur fixation with the placement of an external fixator. Intraoperative Image Postoperative Image Management of Combined Arterial and Orthopedic Injury EAST Guidelines In this scenario, the priority is restoring distal arterial blood flow to minimize ischemia time. If there is an associated unstable fracture, blood flow can be re-established with a temporary intravascular shunt, followed by rigid fixation of the bony injury. If the arterial injury is definitively repaired, it can become disrupted with the manipulation required for rigid fixation. If the associated fracture is stable, the arterial injury can be repaired before addressing the fracture. Previous Next

7 < Back Training Courses Trauma Courses Advanced Trauma Life Support (ATLS). Systematic team-based management of trauma. Advanced Surgical Skills for Exposure in Trauma (ASSET). Cadaver dissection for vascular exposure. Advanced Trauma Operative Management (ATOM). Live tissue dissection for trauma exposures (pelvic hemorrhage, solid organ and hollow viscus injury management, retroperitoneal exposure, basic management of thoracic trauma). Basic Endovascular Skills for Trauma (BEST). Hands-on training in REBOA. Stop the Bleed. Training course for the public to learn how to control hemorrhage. Critical Care Courses Fundamental Critical Care Support (FCCS). Primer for non-intensivists on critically ill patients' initial management when critical care consultation is not immediately available. Emergency General Surgery Courses Emergency Surgery Course. Training course for non-trauma surgeons. Topics include abdominal sepsis, bowel obstruction, colorectal emergencies, cholecystitis, obstetric emergencies. Training Course Texts Advanced Trauma Life Support (ATLS) 10th Edition Student Course Manual. The newest edition of the manual. Fundamental principles of initial trauma evaluation, diagnosis, and management. Advanced Surgical Skills for Exposure in Trauma: Exposure Techniques When Time Matters (ASSET). Trauma exposures, particularly peripheral vascular access. Advanced Trauma Operative Management (ATOM). Operative techniques in trauma. Trauma: Code Red (Khan). 1st edition, 2019. Companion to the RCSEng Definitive Surgical Trauma Skills Course. Previous Next

< Back Vent Mgmt #1: Basics The goal of ventilatory support is to maintain appropriate O2 and CO2 in the blood while offloading the work of the respiratory muscles and minimizing iatrogenic lung damage. Understanding this principle will help guide your ventilator management. Many variables can be manipulated on the ventilator, but there are a few key variables that truly control oxygenation and ventilation. While there is not one ideal setting for every scenario, there are a few basic principles that cover the majority of ventilator management. Basic Ventilator Settings First, it is important to understand what the ventilator does. The ventilator can push air into patients. You can control how much air is pushed in (tidal volume), the number of breaths per minute (respiratory rate, RR), and the concentration of oxygen molecules in the air itself (fraction of inspired oxygen, FiO2). It's also possible to control how quickly air is pushed in (flow)- but we will get to that later. It is important to note: the ventilator does NOT generate pressure- it only monitors pressure to prevent damage from elevated pressures (barotrauma). Breathing is controlled by three variables. Trigger- this determines when a breath starts. Either time, flow, or pressure. Time trigger is utilized when the patient is not generating any spontaneous breathing (ie mandatory breaths). Flow and pressure triggers are utilized if the patient has spontaneous respiratory activity. When the patient attempts to inhale, there is a change in flow and/ or pressure. This is sensed by the ventilator, and a breath is delivered. Limit- this sets the maximum value a parameter can reach during a breath. For example, volume-limited indicates that a breath can't exceed a certain max mL and pressure-limited indicates that the pressure monitored by the machine can't exceed a certain max cm H2O. For a graphic representation, please refer to the image in the section on Limit Variables in Deranged Physiology. Limits impact the shape of the waveform. Volume limited- flow ceases when the set/ target volume is delivered. Pressure limited- a large portion of the TV delivered at the beginning of the breath until the set/ target pressure is reached and then the flow tapers, slowly delivering the remainder of the volume until the breath is time or flow cycled (see next) Cycle- this determines the end of a breath. Time cycled- inspiration ceases at the end of a set time duration. Used in mandatory breaths. Flow cycled- inspiration ceases when flow drops below a certain level. Used in spontaneous breaths. Volume and pressure are not currently used to cycle breaths. The goals of mechanical ventilatory support are O2 delivery (oxygenation) and CO2 removal (ventilation). Effective oxygenation and ventilation are measured by an arterial blood gas- PaO2 indicates the partial pressure of O2 and PaCO2 indicates the partial pressure of CO2. Oxygenation is a function of the concentration of O2 delivered to the patient (fraction of inspired O2, FiO2) and the surface available for O2 exchange. Positive pressure maintains open airways, which maintains the surface available for O2 exchange. Mean airway pressure (MAP) is the parameter that indicates the average pressure measured in the lungs throughout inspiration (inspiratory pressure) and expiration (positive end expiratory pressure, PEEP). Expiration is usually 2-3 times longer than inspiration, so MAP is often simplified to PEEP when trying to optimize oxygenation. However, increasing inspiratory time can improve MAP without adjusting PEEP. Ventilation is controlled by minute ventilation (total volume of air exchanged every minute). Minute ventilation is respiratory rate multiplied by tidal volume. Therefore, respiratory rate (RR) and tidal volume (TV) are the two parameters that can optimize ventilation. Lung-Protective Ventilation Minimizing iatrogenic lung injury is also important when caring for patients receiving ventilatory support. Different types of trauma, including barotrauma (excess pressure), volutrauma (excess volume), and atelectrauma (repetitive opening and closing of alveoli), can damage lungs that are already diseased. The risk of barotrauma can be minimized by monitoring airway pressures (peak and plateau pressures). Volutrauma can be minimized by low tidal volume. Historically, larger tidal volumes were standard (10-12 mL/kg). Currently, the most commonly recommended volume is 6-8 mL/kg (there are some exceptions). Decreased TV leads to ↓minute ventilation and ↓CO2 clearance (↑PaCO2). This is the basic physiologic principle behind "permissive hypercapnia" during mechanical ventilation for ARDS. Atelectrauma can be minimized by maintaining PEEP, which keeps alveoli open. Additional References 1. Respiratory Therapy Pocket Reference Card Previous Next