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  1. Assessing & Managing Sepsis in the Prehospital Setting - Journal of Emergency Medical Services

    Subscribe | Newsletters | Advertise | Contact Us             Hello Edit Profile Logout Login or Register using Journal Supplements Subscribe Jobs Featured Jobs Search Jobs Post A Job Products Buyer's Guide Product Reviews Hot Products Hot Products Submissions Product Announcements Product Videos Technical Digests Webcasts White Papers Videos Ask the Expert Education & Training EMS 10 Interviews EMS Today Fitness JEMS Games Product Spotlight Home About Us Advertise Contact Us Our Team Authors Community News General News Industry News Company & People News Product Announcements Obituaries & Line of Duty Deaths Patient Care Abdominal & Gastrointestinal Disorders Allergies & Immunology Airway & Respiratory Cardiovascular & Hematology Diabetes & Endocrine Disorders Genitourinary & Gynecology & Renal Infectious Diseases Medications and Pharmacology Neurology Patient Assessment Psychiatric Resuscitation & Shock Toxicology Trauma Abdominal & Genitourinary Trauma Bleeding Burns & Soft Tissue Trauma Chest Trauma Environmental Emergencies Head, Neck, Spine and Nervous System Trauma Orthopedic Trauma Special Patients Geriatrics Obstetrics and Neonatal Pediatrics Special Challenges Administration & Leadership Communications & Dispatch Documentation & Patient Care Reporting Education and Training Leadership & Professionalism Legal & Ethical Protocols & Medical Direction Operations Ambulance & Vehicle Ops Air Medical Equipment & Gear Hazmat Provider Wellness & Safety Rescue & Vehicle Extrication Tactical EMS Major Incidents Mass Casualty Incidents Natural Disasters Planning & Incident Management WMD & Terrorism Mobile Integrated Healthcare Special Topics Case of the Month EMS Today Conference Hands On Product Reviews History of EMS Humor JEMS Games Research Surveys Technology   Home About Us Advertise Contact Us Our Team Authors Community News General News Industry News Company & People News Product Announcements Obituaries & Line of Duty Deaths Patient Care Abdominal & Gastrointestinal Disorders Allergies & Immunology Airway & Respiratory Cardiovascular & Hematology Diabetes & Endocrine Disorders Genitourinary & Gynecology & Renal Infectious Diseases Medications and Pharmacology Neurology Patient Assessment Psychiatric Resuscitation & Shock Toxicology Trauma Abdominal & Genitourinary Trauma Bleeding Burns & Soft Tissue Trauma Chest Trauma Environmental Emergencies Head, Neck, Spine and Nervous System Trauma Orthopedic Trauma Special Patients Geriatrics Obstetrics and Neonatal Pediatrics Special Challenges Administration & Leadership Communications & Dispatch Documentation & Patient Care Reporting Education and Training Leadership & Professionalism Legal & Ethical Protocols & Medical Direction Operations Ambulance & Vehicle Ops Air Medical Equipment & Gear Hazmat Provider Wellness & Safety Rescue & Vehicle Extrication Tactical EMS Major Incidents Mass Casualty Incidents Natural Disasters Planning & Incident Management WMD & Terrorism Mobile Integrated Healthcare Special Topics Case of the Month EMS Today Conference Hands On Product Reviews History of EMS Humor JEMS Games Research Surveys Technology Home Assessing & Managing Sepsis in the Prehospital Setting Assessing & Managing Sepsis in the Prehospital Setting Thu, Oct 29, 2015 By Keith Widmeier, BA, NRP, FP C , Keith Wesley, MD, FACEP [Medical Director for Minnesota State EMS and HealthEast Ambulance] Septic patients are very ill, but their symptoms can cause dispatch to label them as a non-priority call. However, early management of the infection in the prehospital setting can help decrease their ICU stay. Photos Chris Swabb Part one of this article, “Infection Detection: Identifying & understanding sepsis in the prehospital setting,” published in the January issue, was a general overview of sepsis along with scene size-up and patient evaluation. This article focuses on pre-hospital assessment and screening tools, prehospital and interfacility management of sepsis patients, and following the patient from ED to discharge. The prehospital assessment focuses on vital sign assessments and use of end-tidal carbon dioxide (EtCO 2 ) and serum lactate monitoring to defeat sepsis in the field. Prehospital management focuses on fluid resuscitation and vasopressor infusions with the goal of improving the patient’s perfusion status. PREHOSPITAL SEPSIS SCREENING TOOLS  The American College of Chest Physicians/ Society of Critical Care Medicine’s definition of sepsis (included in part one) contains very thorough and sensitive tools to assist clinicians in its identification. However, in most EMS systems, the inclusion of lab values and arterial blood gases aren’t feasible. Instead, providers use the Robson screening tool and the BAS 90-30-90 scales, which have been incorporated into prehospital systems internationally. Both of these scales refer to the clinical signs in a patient suspected of having an active infection. The Robson screening tool consists of two parts to help identify and isolate those patients with septic shock so prehospital management can be initiated. With this tool, a patient is considered septic if any two of the following conditions are met: [Native Advertisement] 1. Temperature > 38.3 degrees C (100.9 degrees F) or < 36.0 degrees C (96.8 degrees F); 2. Heart rate > 90 Beats per minute; 3. Respiratory rate > 20 Breaths per minute; 4. Acutely altered mental status; or 5. Serum glucose < 120 mg/dL or 6.6 mmol/L. The BAS 90-30-90 scale is a Swedish model that utilizes an objective approach for evaluating potentially septic patients. With this method, a patient is considered to be septic if one or more of the criteria is met: 1. Systolic blood pressure <90; 2. Respiratory rate > 30 breaths per minute; or 3. Oxygen saturation < 90%. Current research suggests the Robson screening tool is more likely to identify septic patients in the field, but many prehospital protocols in the United States utilize a combination of the two scales to evaluate perfusion status and potential for infection. For example, the Central Ohio Trauma System’s white paper includes evaluation criteria for EMS providers. Providers in this system utilize a sepsis alert protocol, referred to as “Code Sepsis” in some parts of the country, to decrease the door-to-early-goal-directed therapy. The criteria to activate a sepsis alert is a suspected infection with a systolic blood pressure < 90 mmHg or two or more of the following criteria: 1. Heart rate > 90 beats per minute; 2. Temperature < 96.8 degrees F or > 100 degrees F; 3. Respiratory rate > 20 breaths per minute; 4. Acute altered mental status; or 5. Increased serum lactate levels (> 4 mmol/L); Prehospital diagnostics tools include the use of portable fingerstick lactic acid meters, EtCO 2 measured with capnography, and ultrasound. Use of capnography is commonplace in many U.S. services, while lactate meters and ultrasound are rather rare. CAPNOGRAPHY  Capnography, a well-known tool in EMS, provides valuable information not only about ventilation but perfusion as well. As long as the body is metabolizing glucose and oxygen, waste products will be eliminated into the bloodstream. They can only be released into the alveolus if there’s normal perfusion of the lung with blood. As perfusion decreases, so does the EtCO 2 . This results in elevation of the metabolic waste, which is comprised mainly of lactic acid. Therefore, EtCO 2 level is inversely proportional to lactate levels. As we see lactate levels rise in septic patients, we see EtCO 2 levels drop. EtCO 2 readings of less than 25 mmHg in the clinical setting of shock are associated with significant increase in mortality. Patients with EtCO 2 of 25 mmHg may have lactate levels as high as 6.1 mmol/L. Capnography can be monitored and helpful in assessing the impact of therapies designed to improve perfusion. This method of sepsis detection, however, is being underused. In a survey with 39 responses from U.S. Metropolitan Medical Directors, AKA the Eagles Coalition, performed by Ryan Gerecht, MD, CMTE, it was found that only four of the represented EMS systems have a dedicated sepsis protocol, with one system currently developing a procedure and another considering the implementation of a dedicated sepsis protocol. In addition, only one system measures lactate levels and only one uses EtCO 2 surrogate for sepsis detection. For more information on how capnography is being used effectively in Orange County, Fla., for sepsis detection, see “Utilizing Capnography in Sepsis.” VOLUME STATUS & RESUSCITATION The solution to the pollution is dilution. OK, it’s not the solution, but it’s the beginning of our treatment. As the cytokine (proteins important in cell signaling) levels increase, the immune response causes massive vasodilation as well as a decreased systemic vascular resistance, resulting in hypotension. The goal of the fluid resuscitation is to get enough fluid in the vasculature to increase the blood pressure enough to perfuse the vital organs. It’s important to remember that unlike hypovolemic shock, septic shock doesn’t need more oxygen-carrying fluid. Isotonic fluids are adequate, especially in the initial phases of treatment, for increasing the blood pressure. In the prehospital setting, we’re limited to the available tools for evaluating the effectiveness of the fluid resuscitation efforts. Generally, we administer 500 mL boluses until we have a systolic blood pressure greater than 90. More importantly, paramedics should focus on the mean arterial pressure. An eager paramedic could perform the formula MAP = DP + 1/3 PP, where MAP is the mean arterial pressure, DP is the diastolic pressure and PP is pulse pressure. Alternatively, most automated blood pressure cuffs provide a MAP along with the blood pressure. MAPs are a better representation of overall perfusion to the vital organs of the body. SERUM LACTATE  Trending fingerstick lactate acid levels can be useful if time permits and the equipment is available. When measured, the goal is to get the lactate levels below 2 mmol/L. Even if trending is unreasonable due to transport time, an initial lactate level is useful for the ED to demonstrate what level the patient was at prior to fluid resuscitation. Fingerstick lactate monitors are sold to athletes to measure the efficiency of their training and there’s data to support the accuracy of these devices—but their use in EMS and the medical setting is not FDA-cleared. “Off-label” use of these commercial lactate monitors by EMS would require medical director and state EMS office approval. As of now, there’s no FDA-cleared device that is affordable to most EMS agencies, as even the uncleared devices range in price from $200 to $400. ULTRASOUND & CENTRAL VENOUS PRESSURES  Another popular method for measuring fluid status and fluid resuscitation in the ED and critical care setting is ultrasound. Ultrasound use is gaining ground in the prehospital setting. If the inferior vena cava has a 50% or more reduction on inspiration, fluid resuscitation is needed. If available, the provider could administer 20 cc/kg boluses every 20 minutes, titrating to a vena cava collapse of less than 50%. While EtCO 2 can evaluate perfusion, ultrasound can provide valuable information regarding fluid status. Providers can measure the diameter of the inferior vena cava (IVC) to evaluate if fluid resuscitation is necessary. If there’s a 50% or greater decrease in the diameter of the IVC on inspiration, the patient has poor perfusion. In the critical care and interfacility realm, some patients may have a central line or pulmonary artery catheter in place. If a central line is available, the central venous pressure will be less than 2 mmHg. If a pulmonary artery catheter, commonly referred to by the trade name Swanz-Ganz catheter, is in place, then you’ll see a right atrial pressure less than 2 mmHg, pulmonary capillary wedge pressure less than 2 mmHg, a pulmonary artery systolic less than 20 mmHg, and a pulmonary artery diastolic less than 10 mmHg. Although this is more common in critical care transport by air medical or ground critical care and transport teams, in some rural areas paramedics may end up transporting patients with these lines from smaller ICUs to larger hospitals with more capabilities. CASE STUDY  On arrival at the ED, the patient continues to have an altered level of consciousness. The ED continues fluid resuscitation and draws labs for the patient. The patient’s lactate is 4.2, white blood cell count is 22,000, and his neutrophils are 18,000. After aggressive fluid resuscitation, the ED staff begins a dopamine drip of 5 mcg/kg/min. They monitor the patient’s blood pressure and mental status while gradually increasing the dopamine. At 15 mcg/kg/min, the patient becomes more coherent and is eventually able to answer questions. The patient informs the ED staff he’s been having abdominal pain for the past two or three days and has been constipated for the last week. He had an appointment scheduled with his primary care physician for this afternoon. The ED staff performs a CT scan that reveals a bowel obstruction. Arrangements are made to transfer the patient to a regional medical center. INTERFACILITY INFUSIONS IN SEPTIC SHOCK  Paramedics often question when it’s appropriate to initiate vasopressors. If the patient isn’t responding to aggressive fluid resuscitation, paramedic protocols generally recommend vasopressors be used. If the patient has received 20–30 mL/kg of saline and hasn’t improved, then dopamine is indicated. The paramedic should start at 5 mcg/kg/min and shouldn’t exceed 20 mcg/kg/min. Dopamine increases the patient’s heart rate and stroke volume, which increases the cardiac output and the MAP. As the MAP improves, the patient may become more coherent and capable of answering questions. Paramedics should be familiar with how dopamine works so they can be prepared for the potential tachydysrhythmias that may present. The vasopressor of choice in septic shock is norepinephrine (brand name Levophed). Norepinephrine works primarily by vasoconstriction with less side effects on the heart compared to dopamine. It acts as an alpha and beta-1 agonist. The dose will be 2–12 mcg/min, and may be as high as 1.5 mcg/kg/min. Depending on your protocols or written orders, you may be able to increase the infusion during an interfacility transport by 1–2 mcg/min titrating to a MAP of 65. According to the 2012 Surviving Sepsis guidelines, vasopressin may be added to norepinephrine treatment at 0.03 units/ minute. The goal of utilizing vasopressin is to increase the MAP to 65. Providers may also see epinephrine infusions from 1–10 mcg/min, which increases the MAP by increasing the stroke volume and cardiac index. Epinephrine may be used with or in place of norepinephrine. However, providers should be aware that epinephrine infusions may stimulate skeletal muscle aerobic metabolism, potentially increasing lactate levels and interfering with the use of lactate as a marker. If myocardial dysfunction is suspected along with sepsis, patients may have a dobutamine infusion instead of dopamine. The advantage of dobutamine over dopamine is that it works by increasing myocardial contractility without increasing the heart rate. Dobutamine may be administered at 2–20 mcg/kg/min titrated to MAP, which correlates with an improving cardiac output. Dobutamine may be administered in combination with norepinephrine to increase cardiac output and peripheral vascular resistance. Antimicrobial infusions within one hour of arrival is a target for septic patients. Depending on the antimicrobial, the infusion may have completed prior to the inter-facility transport. However, if it hasn’t, providers may end up transporting the antimicrobial infusion. If the infusion was recently initiated, providers should evaluate for signs of an allergic reaction and be prepared to terminate the infusion if necessary. CASE STUDY CONTINUED  The EMS crew arrives at the hospital to pick up the patient and transport him to a regional hospital with ICU capabilities, approximately one hour away. At this point, the patient’s dopamine is at 20 mcg/kg/min and a norepinephrine infusion is initiated at 5 mcg/min. The crew packages the patient, sets up the infusion pump onto the stretcher and transports the patient to the ambulance. En route to the regional hospital, the patient becomes less responsive. The paramedic elects to increase the norepinephrine infusion to 7 mcg/min. The patient’s ventilation rate drops to 10 breaths per minute. The patient has no gag reflex and the paramedic successfully intubates the patient with a 7.5 endotracheal tube and ventilates at a rate of 12 beats per minute. His radial pulses are absent and the carotid pulses are weak. The crew’s automated noninvasive blood pressure is unable to obtain a blood pressure. A crew member calls the hospital and informs of the patient’s decline. On arrival, they bypass registration and go directly to the ICU. The crew moves the patient to the hospital bed and gives a verbal report. A respiratory therapist connects the patient to the vent and the nurses change out the patients IV tubing and begin their assessment. FROM ED TO DISCHARGE  It’s important EMS providers understand not only their own care, but the entire process of healthcare that occurs from the time the patient calls 9-1-1 to the time the patient is discharged to their home. Septic patients are often critically ill, but the way their symptoms are described to a dispatcher may cause them to be dispatched as non-priority calls. Remember, even “general illness” or “sick patient” calls can become very serious very quickly. In the prehospital setting, the septic patient should receive a thorough assessment, appropriate airway management, high-flow oxygen and fluid resuscitation. If the patient is hypotensive after being properly fluid resuscitated, the use of dopamine may be considered. In the ED, fluid resuscitation will be continued and secondary vasopressors may be started. Blood cultures will be drawn, and if specific causes of sepsis are suspected, urine, stool, wound or other cultures may be obtained. IV antibiotics will be initiated. If the patient is in severe respiratory distress, advanced airway management, such as rapid sequence induction intubation, may be considered. Lab values, including blood counts and metabolic enzymes, will be monitored as well. The patient will most likely be transferred from the ED to the ICU, where fluid resuscitation and vasopressor infusions will be continued. If one hasn’t already been inserted, a Foley catheter will be placed. Antibiotics may be changed once cultures and sensitivity tests have been completed, since some antibiotics are more appropriate for specific bacteria. Lab values, particularly those indicative of organ function, will be monitored carefully. If the facility doesn’t have an ICU, the patient may be stabilized for transfer to a larger facility. If this is the case, the transferring paramedic should be aware of and familiar with the various vasopressors and antibiotics used by the smaller facilities within their service area. Also, vasopressors should generally be transported using an IV pump whenever possible to ensure accurate medication administration. The ICU will also strive to correct the underlying cause of sepsis, which may involve surgical intervention (for abscesses or obstructions) or continued antibiotic treatments. Once the infection has been resolved, the ICU staff will begin to wean the patient off any vasopressors and the mechanical ventilator, if the patient was intubated. The patient will remain in the ICU until vital signs and lab values are stable and all critical interventions are stopped. Many patients who stay in the ICU are transferred to either a medical/surgical unit or an ICU step-down unit. In these inpatient units, patients receive IV or oral antibiotics, oxygen and other respiratory therapies, and wound care monitored by the nursing staff. Once vital signs are completely stable, the patient is discharged to their home or an extended-care nursing facility. CASE STUDY CONTINUED  In the ICU, the staff is able to stabilize the patient’s blood pressure with the norepinephrine infusion. He’s scheduled for surgery to have the bowel obstruction removed. Antibiotics are initiated. He’s weaned off the ventilator with supplemental oxygen still utilized on day four, weaned off of vasopressors at day seven, and transferred to a medical/surgical unit on day eight. In the medical/surgical unit, antibiotics are continued by mouth. The patient is on a nasal cannula for two more days. He completes his course of antibiotics and remains hemodynamically stable. He’s discharged from the hospital on day 12. CONCLUSION  Good prehospital management can make a profound difference in a septic patient’s outcome. Early identification and treatment can significantly decrease patients ICU stays, hospital stays and mortality. EMS no longer ends in the prehospital arena. As our industry grows, paramedics are expected to transport complex infusions, ventilators and advanced diagnostic equipment. Interfacility transports can at times be seen as challenging or more challenging than prehospital runs. Septic patients in particular can be quite challenging to assess and manage in both the prehospital and interfacility arenas.  RESOURCES  • Adkins E, Koser S, Allion A, et al. White paper for early recognition and prehospital management of the adult septic patient [white paper]. Central Ohio Trauma System: Ohio, 2013. • Baez AA, Hanudel P, Wilcox SR. The prehospital sepsis project: Out-of-hospital physiologic predictors of sepsis outcomes.  Prehosp Disaster Med . 2013;28(6):632–635. • Dellinger RP. Surviving sepsis campaign: International guidelines for management of severe sepsis and septic shock: 2012.  Crit Care Med . 2013;41(2):580–637. • Hunter CL, Silvestri S, Dean M, et al. (Oct. 1, 2011.) End-tidal carbon dioxide levels are associated with mortality in emergency department patients with suspected sepsis. Retrieved Jan. 9, 2014, from  http://med.ucf.edu/media/2011/10/i2-poster-dean-matthew.pdf.  • Hunter CL, Silvestri S, Ralls G, et al. The sixth vital sign: Prehospital end-tidal carbon dioxide predicts in-hospital mortality and metabolic disturbances.  Am J Emerg Med . Nov. 4, 2013. [Epub ahead of print.] • Wallgren UM, Castrén M, Svensson AE, et al. Identification of adult septic patients in the prehospital setting: A comparison of two screening tools and clinical judgment.  Eur J Emerg Med . Sept. 30, 2013. [Epub ahead of print.]   By Keith Widmeier, BA, NRP, FP C Keith Widmeier, BA, NRP, FP-C, is an EMS education specialist at the University of Cincinnati College of Medicine. He teaches continuing education and coordinates the critical care transport education in the division of EMS. He has over 15 years experience working in urban, suburban, rural and wilderness settings as a paramedic, critical care paramedic and a training officer.   Keith Wesley, MD, FACEP Medical Director for Minnesota State EMS and HealthEast Ambulance Keith Wesley is a board-certified emergency medicine physician living in Wisconsin. Originally from Tyler, Texas, he graduated from Brigham Young University in 1982 and Baylor College of Medicine in Houston in 1986. He completed an Emergency Medicine Residency at Methodist Hospital in Indianapolis, where he gained his first exposure to EMS flying air medical missions. Dr. Wesley has been involved in EMS since 1989 working with many services in Wisconsin. In 1992 he was selected by the Governor as a founding member of the Wisconsin State Physician Advisory Committee and served for 12 years, the past four years as chair. In 2006, Dr. Wesley was selected as the Wisconsin State EMS medical director and continues to provide medical oversight to several services throughout Wisconsin. He is also the past Chair of the National Council of State EMS Medical Directors and is active in National Association of EMS Physicians. In 2007 Dr. Wesley became the Minnesota State EMS medical director and medical director for HealthEast Medical Transportation in St. Paul. Dr. Wesley has authored four EMS textbooks and numerous articles and papers on EMS and is a frequent speaker at state and national EMS conferences. Dr. Wesley is the owner of EMS Consulting and Education, which provides on-line educational programs for EMS providers and medical directors, as well as consultative services for EMS delivery and quality improvement. He can be reached at drwesley@emsconsulting.net. Sponsored Content is made possible by our sponsor; it does not necessarily reflect the views of our editorial staff. Subscribe today to  JEMS In EMS, you never know what you'll be faced with as each new shift begins. The Journal of Emergency Medical Services (JEMS) is real-world EMS. It's informative, practical and an outstanding educational resource for EMS professionals. We're here to help you do your job more effectively, with content from writers who are EMS professionals in the field: Breakthrough Clinical Concepts Cutting-Edge Technology Annual Salary Survey Leadership & Professionalism Fundamental Assessment Tips New Product Reviews Compelling Case Studies and more... SUBSCRIBE DIGITAL EDITION   RECENT ARTICLES Capnography Provides Bigger Physiological Picture to Maximize Patient Care Capnography, or in-line end-tidal carbon dioxide (EtCO 2 ) monitoring, offers more physiological information than any other noninvasive device carried in the field. 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Journal Archives Prev 2015 2014 2013 2012 2011 2010 Next Dec 2015 Volume 40 Issue 12 Nov 2015 Volume 40 Issue 11 Oct 2015 Volume 40 Issue 10 Sep 2015 Volume 40 Issue 9 Aug 2015 Volume 40 Issue 8 Jul 2015 Volume 40 Issue 7 Jun 2015 Volume 40 Issue 6 May 2015 Volume 40 Issue 5 Apr 2015 Volume 40 Issue 4 Mar 2015 Volume 40 Issue 3 Feb 2015 Volume 40 Issue 2 Jan 2015 Volume 40 Issue 1 Prev 2015 2014 2013 2012 2011 2010 Next SUBSCRIBE DIGITAL EDITION   Featured Careers More Jobs   eNews Register for the JEMS eNewsletter, it's FREE! Sign-Up! JEMS Connect FEATURED GROUPS Disaster EMS   EMERGENCY! Lovers   Tactical Medicine   Humor In EMS     CURRENT DISCUSSIONS   JOIN JEMS CONNECT   EMS BLOGS Blogger Browser Today's Featured Posts Copyright © 2015: PennWell Corporation, Tulsa, OK. All Rights Reserved. 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