SAMPLE history is a mnemonic first responders and emergency clinicians use to take a fast, structured history: Signs and symptoms, Allergies, Medications, Past medical history, Last oral intake and Events leading up to the emergency. It is recommended in the ATLS and PALSlife-support courses and taught in the WHO-ICRC Basic Emergency Care course, after immediate threats to airway, breathing and circulation have been dealt with.
What the patient reports and what the responder can see, hear or measure.
02
Allergies and medications
Reactions to drugs, foods or other triggers, and the medicines the patient takes, which can cause the problem or interact with treatment.
03
Past history and last intake
Relevant conditions, and when the patient last ate or drank, which can matter if sedation or surgery may follow.
04
Events
What happened just before: the fall, the meal, the exertion, how the symptoms began.
Where you see it today
Series or parallel?
Mayo Clinic researchers tested whether critical-care clinicians should take a SAMPLE history after the primary survey or alongside it, in simulated cases (Jayaprakash et al., 2016). They found no difference in workload or time between the two, and both improved with practice.
Training front-line staff
The WHO-ICRC Basic Emergency Care course teaches the ABCDE approach followed by a SAMPLE history. An evaluation at district hospitals in Uganda and Tanzania found participants’ emergency-care knowledge scores rose after the course (Kivlehan et al., 2021).
AI that takes a history
Researchers built AMIE, a language-model system for diagnostic conversation, and compared it with primary care physicians in text consultations with patient actors (Tu et al., 2024). The authors stress that text chat is unlike usual practice and that more research is needed before real-world use.
Checklists beyond the ambulance
The same logic, a short fixed list used every time, sits behind the WHO Surgical Safety Checklist. A study across eight hospitals in eight cities found its introduction was associated with fewer deaths and complications (Haynes et al., 2009).
SAMPLE and related tools
ABCDE
Used forFinding and treating life threats in a fixed order
WhenFirst, on arrival
SAMPLE
Used forA focused patient history
WhenAfter immediate threats are handled
OPQRST
Used forExploring pain or a single symptom in more depth
WhenWithin signs and symptoms
WHO Surgical Safety Checklist
Used forConfirming critical steps around an operation
Learn the six letters in order, and ask every question even when the answer seems obvious.
Deal with airway, breathing and circulation first; the history comes after life threats.
Record answers under the six headings so the next clinician can scan them.
Borrow the pattern for any high-stakes intake: a short list asked the same way every time.
When setting up an AI agent, give it a SAMPLE-style list of the context it must gather before it acts.
The Business Engineer lens
Structured intake before action is what separates reliable AI agents from improvising ones: an agent with a fixed list of context to collect makes fewer avoidable mistakes. The Business Engineer’s Agent OS applies the same discipline to how agents are briefed and set up.
Signs and symptoms, Allergies, Medications, Past medical history, Last oral intake, and Events leading up to the illness or injury.
When is a SAMPLE history taken?
After the primary survey has dealt with immediate threats to airway, breathing and circulation; it then guides the rest of the assessment.
Who uses the SAMPLE history?
First responders, nurses and emergency clinicians; it is recommended in ATLS and PALS and taught in the WHO-ICRC Basic Emergency Care course.
Can AI take a patient history?
Research systems such as AMIE have done so in text-based studies with patient actors, but the authors say more research is needed before real-world use.
The complete explainer, cleaned up and reformatted for mobile.
The SAMPLE history is a mnemonic used in emergency medicine to obtain a systematic and thorough patient history from individuals who are experiencing medical emergencies or traumatic injuries. This approach provides a structured framework for healthcare providers to gather essential information about the patient’s symptoms, medical history, allergies, medications, past medical events, last oral intake, and events leading up to the current situation. By following the SAMPLE mnemonic, healthcare providers can gather pertinent information to guide assessment, diagnosis, and treatment decisions.
Components of SAMPLE History
1. Signs and Symptoms
The “S” in SAMPLE stands for signs and symptoms, where healthcare providers inquire about the patient’s chief complaint and associated symptoms. This includes asking the patient to describe their symptoms, such as pain, shortness of breath, dizziness, or weakness, and assessing for any visible signs of distress or physiological abnormalities.
2. Allergies
The “A” in SAMPLE represents allergies, prompting healthcare providers to inquire about any known allergies the patient may have. This includes allergies to medications, foods, environmental substances, or other allergens. It is crucial to identify allergies to prevent potential allergic reactions during treatment interventions.
3. Medications
The “M” in SAMPLE refers to medications, where healthcare providers ask the patient about any prescription medications, over-the-counter medications, supplements, or herbal remedies they are currently taking. Providers should document the name, dose, frequency, and route of administration of each medication to assess for potential drug interactions or adverse effects.
4. Past Medical History
The “P” in SAMPLE stands for past medical history, prompting healthcare providers to inquire about the patient’s medical history, including any chronic medical conditions, previous surgeries, hospitalizations, or significant medical events. Understanding the patient’s medical background can provide valuable insights into their overall health status and potential risk factors for their current condition.
5. Last Oral Intake
The “L” in SAMPLE represents last oral intake, where healthcare providers ask the patient about the last time they ate or drank anything. This information helps determine the patient’s nutritional status, hydration status, and potential risk for aspiration during procedures or interventions requiring sedation.
6. Events Leading Up to Present Illness
The “E” in SAMPLE stands for events leading up to present illness, prompting healthcare providers to inquire about the circumstances surrounding the onset of the patient’s symptoms or injury. Providers should gather information about any precipitating factors, trauma mechanisms, or environmental exposures that may have contributed to the patient’s current condition.
Application of SAMPLE History
1. Rapid Assessment and Triage
The SAMPLE history provides a structured framework for rapid assessment and triage of patients presenting with medical emergencies or traumatic injuries. Healthcare providers can quickly gather essential information about the patient’s symptoms, medical history, and events leading up to the current situation, guiding initial assessment and treatment decisions.
2. Differential Diagnosis and Treatment Planning
By obtaining a comprehensive SAMPLE history, healthcare providers can generate a broad list of potential differential diagnoses and develop a targeted treatment plan. The information gathered allows providers to identify potential underlying medical conditions, assess for exacerbating factors or contraindications to specific treatments, and tailor interventions to address the patient’s individual needs.
3. Documentation and Communication
The SAMPLE history serves as a critical component of patient documentation and communication among healthcare providers. By systematically documenting relevant information obtained during the history-taking process, providers ensure accurate and comprehensive documentation of the patient encounter. Clear and concise documentation facilitates communication among members of the healthcare team, ensuring continuity of care and effective handoffs during transitions of care.
Significance of SAMPLE History
1. Patient-Centered Care
The SAMPLE history emphasizes a patient-centered approach to emergency medical care by focusing on gathering information relevant to the patient’s current condition and needs. By tailoring questions to address the patient’s chief complaint and individual circumstances, healthcare providers demonstrate empathy, respect, and sensitivity to the patient’s concerns, enhancing the overall patient experience and satisfaction.
2. Clinical Decision-Making
The SAMPLE history provides healthcare providers with valuable information to inform clinical decision-making and treatment planning. By systematically gathering information about the patient’s symptoms, medical history, allergies, medications, and events leading up to the current illness or injury, providers can formulate a differential diagnosis, assess the severity of the patient’s condition, and determine appropriate interventions.
3. Safety and Risk Management
Obtaining a thorough SAMPLE history helps mitigate risks and ensure patient safety during emergency medical care. By identifying allergies, medications, and past medical events that may impact treatment decisions, healthcare providers can proactively address potential risks of adverse reactions, medication errors, or complications, minimizing harm to the patient and promoting safe and effective care delivery.
Implementation and Considerations
1. Training and Education
Healthcare providers require training and education on the proper use of the SAMPLE mnemonic and techniques for obtaining a comprehensive patient history. Training programs should emphasize the importance of active listening, open-ended questioning, and cultural sensitivity in conducting patient interviews and history-taking.
2. Standardized Protocols and Documentation Tools
Healthcare organizations should develop standardized protocols and documentation tools to facilitate the use of the SAMPLE history in clinical practice. These protocols outline the steps for conducting a systematic patient interview, documenting relevant information, and communicating findings to other members of the healthcare team.
3. Continuous Quality Improvement
Healthcare organizations should implement processes for continuous quality improvement in the use of the SAMPLE history. This may include regular audits of documentation quality, feedback from patients and healthcare providers, and review of adverse events or near misses related to history-taking practices. Continuous quality improvement efforts help identify areas for improvement and promote adherence to best practices in patient history-taking.
Conclusion
In conclusion, the SAMPLE history is a valuable tool for obtaining a systematic and thorough patient history in emergency medical care. By following the mnemonic, healthcare providers can gather essential information about the patient’s symptoms, medical history, allergies, medications, and events leading up to the current situation. The SAMPLE history facilitates rapid assessment, differential diagnosis, and treatment planning, enhancing the efficiency, safety, and effectiveness of emergency medical care delivery. Through training, standardization, and continuous quality improvement efforts, healthcare organizations can ensure that the SAMPLE history remains a cornerstone of patient-centered and evidence-based care in emergency settings.
SAMPLE History
DescriptionThe SAMPLE History is a mnemonic used to obtain a focused medical history from patients presenting with acute or emergent conditions. It stands for Signs and Symptoms, Allergies, Medications, Past medical history, Last oral intake, and Events preceding the illness or injury. The SAMPLE History helps healthcare providers gather essential information to guide initial assessment, diagnosis, and treatment in emergency situations.
Key Features– Mnemonic for obtaining a focused medical history in emergency settings. – Covers key aspects including Signs and Symptoms, Allergies, Medications, Past medical history, Last oral intake, and Events preceding the illness or injury. – Helps guide initial assessment, diagnosis, and treatment decisions.
History-taking
DescriptionHistory-taking is a fundamental component of patient assessment in healthcare, where healthcare providers elicit information from patients regarding their medical history, present illness, past treatments, and relevant personal and family history. It involves a structured approach to gathering information through open-ended and specific questions, aiming to establish a comprehensive understanding of the patient’s health status and concerns.
Key Features– Fundamental component of patient assessment in healthcare. – Involves eliciting information from patients regarding medical history, present illness, past treatments, and relevant personal and family history. – Uses a structured approach with open-ended and specific questions. – Aims to establish a comprehensive understanding of the patient’s health status and concerns.
Chief Complaint
DescriptionThe Chief Complaint is the primary reason for a patient’s visit to a healthcare provider. It represents the patient’s main symptom or concern that prompts them to seek medical attention. Assessing the Chief Complaint involves obtaining detailed information about the onset, duration, severity, associated symptoms, and aggravating or alleviating factors related to the presenting complaint.
Key Features– Focuses on the primary reason for the patient’s visit to a healthcare provider. – Involves obtaining detailed information about the onset, duration, severity, associated symptoms, and aggravating or alleviating factors related to the presenting complaint.
Review of Systems
DescriptionThe Review of Systems (ROS) is a systematic inquiry into the patient’s symptoms across various body systems. It involves asking specific questions to identify symptoms or abnormalities in each system, including constitutional symptoms, respiratory, cardiovascular, gastrointestinal, genitourinary, musculoskeletal, neurological, dermatological, and psychiatric symptoms. The ROS helps healthcare providers gather comprehensive information about the patient’s overall health.
Key Features– Systematic inquiry into the patient’s symptoms across various body systems. – Involves asking specific questions about constitutional symptoms and symptoms related to each body system. – Helps gather comprehensive information about the patient’s overall health.
Past Medical History
DescriptionPast Medical History (PMH) refers to a patient’s previous illnesses, medical conditions, surgeries, hospitalizations, and significant medical events. Assessing the PMH involves obtaining detailed information about chronic medical conditions, previous treatments, surgeries, allergies, immunizations, and preventive screenings. Understanding the PMH is crucial for evaluating the patient’s overall health status and assessing the risk factors for current medical issues.
Key Features– Focuses on a patient’s previous illnesses, medical conditions, surgeries, hospitalizations, and significant medical events. – Involves obtaining detailed information about chronic medical conditions, previous treatments, surgeries, allergies, immunizations, and preventive screenings. – Crucial for evaluating the patient’s overall health status and assessing risk factors for current medical issues.
Gennaro Cuofano is a CRO and tech executive who has worked in AI since late 2015, starting with bringing NLP, natural-language generation, voice and chatbot products to the marketing industry. His background is in law and finance: he holds a Master's degree in Law and an International MBA with an emphasis on corporate finance (LUISS Business School and the University of San Diego, 2012), and worked as a financial analyst at a real-estate investment firm in San Diego and as an assistant controller. His work focuses on business model strategy, business engineering and, more broadly, structural analysis: how companies make money, read from their own filings. He created FourWeekMBA and leads research there and at The Business Engineer, his newsletter on AI and business strategy, with over 95,000 subscribers and more than 1,000 published analyses. His writing has also appeared on Entrepreneur (for example, How to Digitize a Family Business in Europe) and HackerNoon. Find him on LinkedIn and Substack. See how we source.
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