Principles of Assessment
Assessment principles are foundational for patient evaluation, guiding how you gather and interpret information to determine a patient's condition.
Related topics include scene size-up, primary assessment, vital signs, and communication/documentation, which are essential components that support a comprehensive assessment process.
Scene size-up (Chapter 11) involves evaluating safety, identifying hazards, and determining the nature of the incident before approaching the patient.
Primary assessment (Chapter 12) focuses on identifying and managing immediate life threats, such as airway, breathing, and circulation issues.
Vital signs and monitoring devices (Chapter 13) provide objective data (like heart rate, blood pressure, and oxygen saturation) to help assess patient status and guide care.
Effective communication and documentation (Chapter 17) ensure accurate transfer of information between providers and maintain a legal record of care provided.
Standards
Secondary assessment involves a more detailed and thorough evaluation of a patient's condition after initial life threats have been addressed, focusing on identifying other injuries or medical issues.
Reassessment is the ongoing process of monitoring a patient's status, checking for changes in condition, and evaluating the effectiveness of interventions.
Clinical behavior and judgment refer to the decision-making process used to interpret assessment findings, prioritize care, and determine appropriate interventions based on the patient's needs.
Competencies
You use scene information and patient assessment findings—including scene size-up, primary and secondary assessments, patient history, and reassessment—to guide your emergency management decisions.
Basic interventions are initiated based on your assessment findings, aiming to mitigate the emergency and provide limited symptom relief.
Your actions focus on stabilizing the patient and ensuring access to definitive care.
Core Concepts
Examinations involve systematic processes that include history-taking, physical examination, and assessment of body systems.
History-taking techniques focus on gathering information about the patient's current condition, medical history, and events leading up to the incident.
Physical examination techniques require you to inspect, palpate, percuss, and auscultate to identify signs of illness or injury.
Body system examinations involve assessing specific systems (e.g., respiratory, cardiovascular, neurological) to detect abnormalities.
Critical thinking concepts for the EMT include integrating information from history, physical exam, and body system assessments to make informed decisions about patient care.
Learning Objectives
Effective patient history-taking involves using both open-ended and closed-ended questions; open-ended questions encourage detailed responses, while closed-ended questions are useful for obtaining specific information.
The OPQRST mnemonic helps gather detailed information about a patient's chief complaint: Onset, Provocation/Palliation, Quality, Region/Radiation, Severity, and Time.
The SAMPLE mnemonic organizes history-taking: Signs/Symptoms, Allergies, Medications, Past medical history, Last oral intake, and Events leading up to the present illness or injury.
Physical examination techniques include inspection, palpation, percussion, and auscultation, each providing different types of information about body systems.
Choosing the appropriate examination technique depends on the body system and the information needed; for example, auscultation is key for lung sounds, while palpation is important for assessing tenderness.
Decision making in EMS involves a diagnostic process that can be compared to that of emergency physicians, but EMTs often rely more on pattern recognition and rapid assessment.
Experience influences diagnostic accuracy and speed, with more experienced providers often recognizing patterns and avoiding common cognitive biases such as anchoring or confirmation bias.
Recognizing and mitigating cognitive biases is essential for accurate decision making in EMS scenarios.
Experienced physicians tend to use more analytical and reflective thinking compared to EMTs, who may rely more on protocols and rapid decision-making.
Evaluating and refining your own approach to thinking like an EMT involves self-assessment and awareness of both strengths and areas for improvement in clinical reasoning.
Key Terms
A thorough secondary assessment is essential for determining the correct diagnosis and guiding treatment decisions for patients with altered mental status.
History taking involves asking about the patient's current problems (history of the present illness/injury, HPI) and past medical conditions (past medical history, PMH), using both open-ended and closed-ended questions to gather comprehensive information.
Physical examination techniques, including checking for signs such as jugular vein distention (JVD) and crepitation, are crucial for identifying findings that support a diagnosis or differential diagnosis.
Assessment protocols, such as OPQRST and SAMPLE, help structure the evaluation and ensure important details are not missed.
The assessment process applies to both adult and pediatric patients, and the findings directly influence the selection of appropriate treatments, such as glucose for hypoglycemia, naloxone for opioid overdose, or oxygen for hypoxia.
The Patient History
Assessment techniques include both history-taking and physical examination, which together provide a comprehensive evaluation of the patient.
History-taking is divided into two main components: the history of the present illness/injury (HPI), which focuses on current symptoms and events, and the patient’s past medical history (PMH), which reviews previous health issues and treatments.
Physical examination complements the history by providing objective findings through direct observation and examination of the patient.
History-Taking Techniques
Obtaining the history of present illness/injury (HPI) involves direct communication with the patient, or if not possible, gathering information from family, bystanders, medications, and scene observations.
Building rapport is essential for effective history-taking; this includes being at the patient’s physical level, showing empathy, and listening attentively.
Open-ended questions are preferred to encourage detailed responses, such as “What can you tell me about your headache?” rather than closed-ended questions.
Closed-ended questions (yes/no) are appropriate in urgent situations when rapid assessment is needed, such as when a patient appears critically ill.
History-taking helps identify patterns that point to specific disorders, guiding treatment decisions; for example, chest pain with sudden onset and sweating may indicate myocardial infarction, while pain after trauma suggests injury.
Consistency and structure in history-taking are crucial for thorough assessment, especially under stress.
The OPQRST mnemonic is a key memory aid for assessing chief complaint and HPI:
O: Onset – What was happening when the problem began?
P: Provocation – What triggers or relieves the pain?
Q: Quality – How does the patient describe the pain?
R: Region/Radiation – Where is the pain and does it spread?
S: Severity – How bad is the pain (e.g., 0–10 scale)?
T: Time – When did it start and has it changed?
Tailor follow-up questions based on initial responses to clarify specific patterns, such as asking about pain changes with eating or radiation to other areas.
Always consider prior trauma in medical complaints and medical history in traumatic events, as these can change the assessment and treatment approach.
Past medical history is important, especially for unconscious or non-communicative patients; previous conditions like diabetes or asthma can guide treatment.
Current medications provide insight into past medical history and may reveal undisclosed conditions; medications can also affect unrelated problems (e.g., beta-blockers affecting shock response).
Allergies and last oral intake are relevant, especially for conditions like allergic reactions or abdominal pain, and for surgical considerations.
Recent travel history is increasingly important due to emerging infectious diseases.
The SAMPLE mnemonic is another essential checklist for patient assessment:
S: Signs and symptoms – What is wrong?
A: Allergies – To medications, foods, or environment.
M: Medications – All current and prescribed drugs, supplements.
P: Pertinent past medical history – Previous illnesses, surgeries, or ongoing problems.
L: Last oral intake – Recent food or drink.
E: Events – Sequence leading to the current problem.
Effective history-taking provides most of the information needed for medical assessment and guides care decisions.
Identify Likely Problems
Patient assessment parallels the scientific method: You form hypotheses based on the chief complaint and history, then test these ideas through further assessment to move from possibilities to probabilities.
History taking is just one part of the secondary assessment: Information gathered must be confirmed and cross-checked with other assessment findings to ensure accuracy.
Pattern recognition is key: Identifying patterns in symptoms and history (such as rapid onset of breathing difficulty, hives, and wheezing after a bee sting) helps you narrow down likely diagnoses, like anaphylaxis.
Interviewing children requires special considerations: Use simple language with preschoolers, and recognize that school-age children can describe their symptoms but may feel guilt or fear. Always reassure them and avoid sarcasm or teasing.
Include caregivers in the assessment: Parents, teachers, or care providers often provide crucial information and their involvement can help gain the child’s trust.
Children experience heightened fear in emergencies: Their lack of experience and the unfamiliar, often frightening environment (pain, noise, bright lights, cold) can increase anxiety and panic, especially in infants and young children.
Pediatric Note
Pediatric assessments require adjustments based on the child's developmental stage, as infants may not use words and young children may be reluctant to communicate due to fear of strangers or separation anxiety.
Effective communication with children involves engaging at their level, such as kneeling or sitting at eye level, using simple language, and making sure the child can see your face and hear you clearly.
Children may experience regression under stress, acting younger than their age, especially if parents are not present, as children find security through their parents during emergencies.
Building trust and reducing fear is crucial: introduce yourself simply, reassure the child about their parents, allow comfort items like toys, smile, and use gentle touch if appropriate.
Assessment should proceed at a relaxed pace if there are no life-threatening issues, as fearful children cannot handle rapid assessments or confusing questions.
Always explain equipment and procedures before use, using concrete, age-appropriate language, and check for understanding by asking questions.
Never lie to the child; be honest about what may hurt, but provide reassurance and support throughout the interaction.
The Physical Examination
Physical examination is a crucial part of the secondary assessment, complementing the patient history to develop a comprehensive clinical picture and identify issues not found in the primary assessment.
Patient history and physical examination work together to create and confirm diagnostic probabilities by recognizing patterns in the patient's presentation.
Forming and testing hypotheses: Information from the patient history helps you form a hypothesis about the patient's condition, which you then test through physical examination.
Physical signs confirm or refute suspicions: For example, if a severe allergic reaction is suspected based on history, physical examination looks for signs like swelling, rash, and low blood pressure to confirm or disprove this suspicion.
Techniques such as observation, inspection, and auscultation are used during the physical examination to identify signs associated with specific conditions, increasing the likelihood of an accurate diagnosis if those signs are present.
Physical Examination Techniques
Three main physical examination techniques are observe, auscultate, and palpate, and the choice of technique depends on the patient's complaint and presentation.
Observation involves visually assessing the patient for overall condition and specific complaints, such as looking for deformities, comparing injured and uninjured areas, or noting signs of distress that may not be verbally reported.
Auscultation is listening for abnormal internal sounds, typically using a stethoscope, to detect issues like wheezing or other irregularities in the lungs or body.
Palpation requires using your hands to feel for deformities, swelling, or other abnormal findings, especially in areas where the patient reports pain or as part of a comprehensive trauma assessment.
Pediatric Physical Exam
Begin physical exams with the least invasive areas first; for infants and small children, start at the toes or trunk and move toward the head to reduce fear and agitation.
Explain each step of the exam using simple, literal language; avoid medical jargon and clarify actions to prevent misunderstandings (e.g., say “I’m going to hold your wrist for a minute” instead of “I’m going to take your pulse”).
Use comforting strategies such as allowing the child to sit on a parent’s lap and providing clean stuffed animals to model procedures and offer reassurance.
Be honest about procedures that may cause discomfort; never lie about pain, and reassure the child that you and others are there to help and will not leave them alone.
Respect modesty and privacy, especially in children aged five to eight, by explaining the need to remove clothing and protecting them from onlookers.
Take time and avoid rushing; children may resist or feel upset if they do not understand your intentions, so proceed slowly and patiently.
Prevent hypothermia by covering exposed children quickly; children lose body heat rapidly during exams.
Assessment goals for children are the same as for adults; you are looking for signs of injury and illness to confirm or rule out possible conditions.
Body System Examinations
Assessment methods for EMTs have shifted from using a fixed set of steps for every patient to a more flexible approach based on the patient's specific complaint and affected body systems.
Body system examinations involve selecting and applying relevant exam techniques tailored to the patient's symptoms and the likely involved body systems, rather than using generic assessments.
Understanding pathophysiology is essential, as it helps you determine which body systems to examine and deepens your ability to assess various conditions.
The decision-making process includes choosing whether to examine one or multiple body systems, depending on the patient's presentation.
Assessment techniques and history questions are specific to each body system and condition, focusing on the most relevant information rather than a complete history.
Mnemonics like SAMPLE and OPQRST help you remember and organize the questions and assessments relevant to each body system.
Chapter 14 Visual Guide
The location of the body system exam depends on patient stability: perform exams in the ambulance for unstable patients and on scene for stable patients.
Selection of body system exams is guided by patient history—the information you gather during the history-taking process determines which exams to perform.
Respiratory exam includes: assessing work of breathing and patient position, listening to lung sounds, checking for pedal and sacral edema, and using pulse oximetry. Important history points are dyspnea on exertion, orthopnea, and recent weight gain.
Cardiovascular exam involves: checking pulse (presence, rate, regularity), evaluating skin color, temperature, and condition, measuring blood pressure (including orthostatic changes, though these may be unreliable in elderly or medicated patients), and assessing for jugular vein distention (JVD). Many respiratory exam components are also relevant here.
Neurologic exam uses the BEFAST scale (or similar), assesses pupils, monitors changes in mental status over time, and compares extremity strength and movement between both sides of the body.
Endocrine exam includes: blood glucose monitoring, checking skin color/temperature/condition, assessing breath odors, and looking for signs of polyphagia, polydipsia, or polyuria. Also monitor pupils and mental status. Important history includes oral intake, medication use, and recent illness.
Gastrointestinal/Genitourinary (GI/GU) exam involves: palpating abdominal quadrants and obtaining a history of input/output amount and frequency. Look for evidence of blood in vomit, stool, or urine, and inquire about menstrual history and pregnancy when appropriate.
Respiratory System
Assessing whether the patient is breathing adequately is the most critical step in respiratory emergencies; immediate ventilation is required if respiratory failure is observed.
A thorough history should include existing respiratory conditions, prescribed medications and adherence, comparison to previous episodes, and the onset and progression of symptoms.
Key historical questions involve dyspnea on exertion (difficulty breathing after activity), recent rapid weight gain (suggesting fluid buildup or heart failure), orthopnea (difficulty breathing when lying down), cough characteristics (productive or not, and what is coughed up), recent respiratory illnesses, and chronic respiratory diseases (like asthma or COPD).
Physical examination starts with observation: altered mental status may indicate poor oxygen delivery, and the level of respiratory distress is assessed by noting accessory muscle use and breathing effort.
Chest wall motion should be observed for symmetry and adequacy; abnormalities may indicate trauma or pneumothorax.
Auscultation of lung sounds is essential: wheezes suggest airway narrowing, while crackles (rhonchi and rales) indicate fluid in the airway.
Pulse oximetry is used to measure blood oxygen saturation, providing objective data on respiratory function.
Edema should be checked: swelling in the ankles (dependent edema) or in the abdomen/flanks in bedridden patients may indicate fluid overload or heart failure.
Fever may point to an infectious cause, such as pneumonia.
Cardiovascular System
Assessment of the cardiovascular system focuses on both the heart and blood vessels, and applies to patients with cardiac issues, shock, or vascular problems. The respiratory and cardiovascular systems are closely linked, so assessment techniques and history questions often overlap.
Key history-taking steps include: obtaining a history of existing cardiac conditions and medications (and adherence), comparing current symptoms to previous episodes, using the OPQRST mnemonic to describe chest pain or discomfort, and asking about palpitations, racing heart, syncope, dizziness, and pain in areas outside the chest (such as arms, neck, jaw, or epigastric region).
Physical examination involves: assessing skin color, temperature, and condition (pale, cool, or moist skin suggests a serious condition), and noting mental status (altered mental status may indicate poor brain perfusion).
Pulse assessment: Check for rate, regularity, and strength of pulses (radial and carotid). An absent or weak radial pulse may indicate poor perfusion.
Blood pressure measurement: Blood pressure can be normal, high, or low. A difference greater than 20 mmHg between arms may suggest an aortic aneurysm. Pulse pressure (difference between systolic and diastolic pressures) should be noted; a narrowing pulse pressure may indicate shock.
Look for jugular vein distention (JVD): JVD can indicate heart failure or obstructive chest conditions.
Palpate the chest for tenderness: Localized tenderness may indicate trauma.
Observe posture and breathing: Guarding the chest or shallow breathing may indicate injury or pain from chest trauma.
Nervous System
The nervous system examination consists of two main elements: assessment of mental status and examination of the body for signs of dysfunction.
Mental status is a key indicator of brain function; altered mental status can result from decreased oxygen, low perfusion, stroke, tumors, dementia, or other causes.
Assessment of mental status involves evaluating the patient’s orientation to person, place, time, and purpose. It is important to determine the patient’s baseline mental function, especially in those with pre-existing conditions like dementia or Alzheimer’s disease, and to identify any changes from this baseline.
A thorough history should include previous neurologic conditions, such as prior strokes, transient ischemic attacks (TIAs), amyotrophic lateral sclerosis (ALS), or Guillain–Barré syndrome.
Speech assessment is crucial, as slurred speech, inability to speak, or inappropriate word use can indicate brain dysfunction.
The physical examination includes performing a stroke scale, such as the BE-FAST assessment, to systematically check for signs of stroke.
Key physical signs of stroke include arm drift, facial asymmetry, and speech difficulty, which may vary depending on the part of the brain affected.
Box 14-1
BE-FAST is a mnemonic for recognizing acute stroke symptoms: Balance (sudden loss of balance or coordination), Eyes (sudden vision changes), Face (sudden facial drooping), Arms (sudden weakness in arm or leg), Speech (sudden slurred or garbled speech), and Time (immediate action is critical—call 911).
Peripheral sensation and movement should be checked in all extremities: Ask the patient to move fingers or toes and assess sensation; unequal or absent responses may indicate spinal injury.
Palpate the spine gently for tenderness or deformity: This helps identify possible spinal injuries.
Assess extremity strength: Have the patient squeeze your fingers (grip strength) and raise/lower a foot against resistance; findings should be equal on both sides, with inequality suggesting possible spinal injury.
Check pupils for equality and reactivity: Unequal or nonreactive pupils may indicate neurological issues.
Evaluate gait if the patient is ambulatory: Assess balance and normal walking ability, but do not allow standing if the patient is dizzy or has balance problems due to high fall risk.
Endocrine System
The endocrine system consists of glands that secrete hormones, influencing functions such as growth and heart rate.
Diabetic emergencies are the most common endocrine emergencies, often requiring information from family or bystanders if the patient has altered mental status.
Key history elements include: presence of endocrine conditions (like diabetes or thyroid disease), medication use and timing, recent changes in medication or dosage, recent food intake and timing, changes in physical exertion, current illness, and symptoms such as polyuria (frequent urination), polyphagia (excessive hunger), or polydipsia (excessive thirst), which may indicate hyperglycemia.
Assess whether the patient uses an insulin pump or continuous glucose monitoring device, as malfunctions or incorrect programming can cause abnormal insulin delivery and glucose fluctuations.
Physical examination should focus on mental status (since hypoglycemia can cause altered mental status), skin condition (cool, moist skin may indicate hypoglycemia), and obtaining a blood glucose level if permitted.
Normal blood glucose range is mg/dL ( mmol/L).
Look for insulin pumps or medical jewelry that may identify the patient as diabetic, as these can provide important clues for assessment and management.
Gastrointestinal System
The gastrointestinal system extends from the mouth to the anus and can be affected by trauma anywhere along this path, including from causes like motor-vehicle collisions, falls, violence, and sexual assault.
Assessment involves evaluating intake and output, focusing on what the patient has eaten or drunk, and the characteristics of vomit and stool.
A thorough history is essential, including detailed questions about pain (using the OPQRST mnemonic), changes in oral intake, history of gastrointestinal issues, medication use, vomiting (amount, frequency, appearance), and bowel movements (frequency, appearance, comparison to normal).
Key indicators of gastrointestinal bleeding include: vomit that looks like coffee grounds or contains dark/bright red blood, and stool that is dark and tarry (suggesting digested blood) or contains bright red blood.
Physical examination includes observing the patient’s position and behavior, as abdominal pain may cause the patient to assume a fetal position or guard the abdomen.
Abdominal assessment involves inspection and palpation of the quadrants, with palpation of painful areas performed last; auscultation for bowel sounds may be done before palpation.
Inspection of vomitus or feces is important, noting volume and color, with special attention to signs of gastrointestinal bleeding.
Immune System
Allergic reactions are the most significant immune system concern in emergency medical settings, with assessment focused on identifying severity, especially anaphylaxis.
Key history questions include prior allergies or reactions, exposure to known allergens, typical reaction severity, history of asthma, and current symptoms such as chest/throat tightness, breathing difficulty, facial/mouth/tongue swelling, gastrointestinal distress, hives, rash, and availability of medications like epinephrine auto-injectors.
Physical examination involves inspecting the allergen contact site for stingers or swelling, checking the skin for widespread rash or hives, examining the face, lips, and mouth for swelling, listening for hoarse or raspy voice and stridor, and auscultating the lungs for wheezing to assess breathing adequacy.
Musculoskeletal System
The musculoskeletal system is most commonly injured by trauma, and musculoskeletal assessments are typically performed in trauma situations.
History-taking is secondary to physical assessment in trauma cases, but can provide useful information such as prior injuries, use of blood-thinning medications, and underlying conditions (like osteoporosis or cancer) that increase fracture risk.
Physical examination involves inspection, palpation, and comparison:
Inspect for deformity, swelling, or bruising as signs of injury.
Palpate suspected injury areas gently, especially if deformities are present, to avoid causing further pain or injury.
Compare both sides of the body for asymmetry, which can indicate dislocation or other injury.
Crepitation (the sensation of bone ends rubbing together) is a key finding during palpation and suggests a fracture.
In cases with multiple injuries or unresponsive patients, a head-to-toe assessment is performed, palpating all major body areas and extremities to identify injuries.
Pediatric Note
Children experience unique fears and concerns during traumatic accidents, particularly related to body image, disfigurement, and uncertainty about upcoming events.
Understanding a child's perspective is essential for effective care, as their emotional responses and worries differ from those of adults.
Physical differences between children and adults are important in pediatric treatment, requiring special attention to their distinct anatomical and physiological characteristics.
Critical Thinking and Decision Making
Diagnosis in emergency care varies by provider level: EMTs are required to diagnose certain conditions like cardiac arrest, but not others such as tetanus, which even higher-level providers may not diagnose in the field.
Scope and specificity of diagnosis differ: EMTs often make generalized diagnoses (e.g., "abdominal pain of unknown cause"), while emergency physicians can provide more specific diagnoses due to greater training and access to diagnostic tools.
Similarities in approach: Both EMTs and emergency physicians may use generalized diagnoses when the exact cause cannot be determined, highlighting a shared approach in uncertain situations.
Training and expertise impact diagnostic ability: EMTs have limited training (about 200 hours) compared to physicians, resulting in less depth and specificity in diagnosis and emergency care.
EMT Diagnosis and Critical Thinking
An EMT’s diagnosis is a label for a patient’s condition based on history, physical exam, and vital signs, guiding further evaluation and treatment; it may be called field, presumptive, or working diagnosis.
Critical thinking is essential for EMTs—it is an analytical, organized, and efficient process that helps you think through problems, make decisions, and determine what actions to take in complex or uncertain situations.
Critical thinking involves gathering and analyzing information (facts, principles, theories) and applying them reflectively and reasonably to patient care.
EMTs often face diagnostic uncertainty in the field due to limited resources and time; for example, abdominal pain can have many causes that require advanced diagnostics not available prehospital.
For some conditions, focused assessment tools can clarify the diagnosis—for instance, altered mental status can be evaluated with blood glucose monitoring (for hypoglycemia), stroke scales (for stroke), and observation of respiratory rate and pupils (for opioid overdose).
The primary goal for EMTs is to choose the correct treatment or recognize when rapid transport is needed, rather than making a definitive diagnosis, emphasizing the importance of sound decision-making and critical thinking over technical skills alone.
How a Clinician Reaches a Diagnosis
All clinicians follow a basic diagnostic process: gathering information, considering possible diagnoses (differential diagnosis), and reaching a conclusion, but the implementation varies by setting and resources.
Traditional approach in medicine: involves a thorough patient assessment (history, physical exam, vital signs, tests), creation of a comprehensive differential diagnosis, further evaluation and testing to rule in or out conditions, and narrowing the list to reach a definitive diagnosis. This process is typically leisurely and thorough, with extensive resources and significant patient rapport.
Emergency medicine approach: prioritizes ruling out life-threatening conditions and initiating urgent treatment due to time and resource constraints. The focus is on identifying red flags (serious symptoms), narrowing the differential diagnosis quickly, and often referring patients for further evaluation. The process is efficient, focused, and occurs in a hectic environment with moderate diagnostic range and limited rapport.
EMS (Emergency Medical Services) approach: is urgent and limited by field resources. EMTs focus on immediate life threats, perform a rapid assessment (history, physical exam, vital signs), look for red flags, and begin beneficial treatments (e.g., oxygen) that are not harmful. The differential diagnosis is often short, and further evaluation is restricted by time and available tools. The diagnosis may simply restate the chief complaint, and transport is prioritized for more extensive care.
Key differences among approaches: Traditional medicine aims for a definitive diagnosis with thorough assessment and wide-ranging tests; emergency medicine and EMS focus on ruling out life threats, narrowing diagnoses, and providing urgent or protocol-driven treatments, with less thoroughness and fewer resources.
Shortcuts and heuristics in diagnosis: Experienced clinicians use pattern recognition (heuristics) to speed up diagnosis, but these shortcuts can introduce biases.
Representativeness heuristic: involves assuming a diagnosis based on typical signs and symptoms, but can lead to errors when patients present atypically (e.g., elderly patients with heart attacks may not have chest pain).
Availability heuristic: involves overestimating the likelihood of a diagnosis because it is easily recalled, often due to recent experience, which can skew clinical judgment away from more common conditions.* Overconfidence can hinder effective patient care by making you believe you know more than you do; staying aware of your knowledge limits and objectively evaluating evidence helps prevent this.
Confirmation bias leads you to seek only evidence that supports your initial diagnosis, causing you to overlook contradictory information; actively look for data that challenges your assumptions and consider alternative explanations.
Illusory correlation is the mistaken belief that two events are causally related when they may just coincide or share a common cause; always question apparent cause-and-effect relationships and consider other explanations for observed patterns.
Anchoring and adjustment occurs when your initial impression or diagnosis overly influences your subsequent thinking, making it hard to change your mind even when new evidence appears; avoid jumping to conclusions and ensure your assessment is thorough and open to revision.
Search satisfying happens when you stop looking for additional problems after finding an initial diagnosis, risking missed secondary issues or errors; keep evaluating for other possible diagnoses and don’t settle too quickly on the first answer.
How an EMT Can Learn to Think Like an Experienced Provider
Embrace ambiguity: You will often face uncertain situations with limited information and resources; accepting this uncertainty helps you become a better provider and understand the limits of your knowledge and its impact on patient care.
Recognize limitations of technology and people: Both humans and equipment are prone to errors and failures. Always assess the reliability of information sources and be cautious with unexpected device readings, using clinical judgment to guide decisions.
Be flexible in your approach: No single strategy works for every situation. Adaptability is crucial, especially when your usual methods are ineffective, requiring you to consider a broader range of possible diagnoses.
Build a strong knowledge foundation: Expert clinicians are highly familiar with common and mimicking conditions, stay updated on new information, and combine robust knowledge with effective thinking processes.
Organize and elaborate your knowledge: Practice associating signs and symptoms with multiple possible diseases, and reflect on how specific findings affect the likelihood of different conditions, especially for diseases with similar presentations.
Compare and contrast conditions: Analyze similarities and differences between conditions, and rephrase patient symptoms in clinical terms to better match disease descriptions.
Learn from others: Seek opportunities to observe and question experienced clinicians to understand their problem-solving processes and diagnostic reasoning.
Reflect on your experiences: Evaluate both successes and challenges after patient encounters to reinforce good habits and identify areas for improvement, always seeking to expand your knowledge and skills.
Continue searching for information: Even after reaching a possible diagnosis, keep looking for data to confirm or rule out conditions, recognizing that patients may have multiple issues and your initial conclusion could be incorrect.
Know your limits and avoid overconfidence: Understand the boundaries of your competence, avoid exceeding them, and prioritize safe, appropriate patient care over diagnostic certainty.
Critical thinking develops over time: Developing expert-level thinking requires ongoing study, practice, and reflection; be patient with your progress and focus on continuous learning.
Think Like an EMT
Critical thinking and clinical judgment are essential for effective secondary assessment, guiding you in choosing appropriate exams and determining patient severity.
Decision making is based on information gathered from the patient, requiring you to adapt your assessments to each unique situation.
Successful EMTs are thorough, adaptable, and make sound decisions throughout the assessment process, continually refining these skills with practice.
Point of View: EMT
Listening is essential for effective critical thinking, as it allows you to gather all necessary facts before making decisions.
Small details and subtle cues are important, since overlooked information or unspoken thoughts can be crucial to understanding a situation.
Assessment and data collection (like taking vitals) are important, but listening provides deeper insight that cannot be obtained through observation alone.