Prehospital Academy Lesson 40.2
The Pediatric Assessment Triangle (PAT)
This companion page details the Pediatric Assessment Triangle (PAT), a crucial tool for EMTs to rapidly assess the severity of illness or injury in pediatric patients. The PAT allows for a quick, hands-off evaluation of a child's physiological status, guiding immediate management decisions in the prehospital setting.
Introduction to the Pediatric Assessment Triangle (PAT)
The PAT is a visual assessment tool that helps providers form a general impression of a child's clinical condition within seconds, without touching the patient. It focuses on three key components: Appearance, Work of Breathing, and Circulation to the Skin.
Unlike adult patients, children compensate well for a prolonged period before rapidly decompensating. The PAT helps identify subtle signs of distress before a child becomes critically ill.
Components of the PAT
1. Appearance: "TICLS" Mnemonic
This component reflects the adequacy of brain perfusion and oxygenation. It assesses the child's neurological status and interaction with the environment.
Tone: Muscle tone (e.g., limp, normal, active, struggles).
Interactiveness: How alert and responsive is the child to parents/environment (e.g., playing, withdrawn, irritable, crying).
Consolability: Can the child be comforted by a parent or caregiver?
Look/Gaze: Does the child maintain eye contact? Is their gaze fixed or wandering?
Speech/Cry: Strength and quality of speech or cry (e.g., strong, weak, hoarse, silent).
A child with abnormal appearance, despite normal work of breathing and circulation, should be considered seriously ill.
2. Work of Breathing
This component assesses the effort required for the child to breathe. It reflects the adequacy of oxygenation and ventilation.
Abnormal Breath Sounds: Stridor (upper airway), wheezing (lower airway), grunting (distal airway/alveolar disease).
Abnormal Posture: Tripod position, sniffing position (often indicates upper airway obstruction).
Retractions: Suprasternal, supraclavicular, intercostal (indicating increased respiratory effort).
Nasal Flaring: Widening of the nostrils during inspiration.
Tachypnea: Abnormally rapid breathing rate (age-dependent).
Bradypnea: Abnormally slow breathing rate, often a pre-arrest sign in children.
3. Circulation to the Skin
This component reflects the adequacy of circulation and perfusion of the skin, which can indicate the body's compensatory mechanisms for shock.
Pallor: Paleness of the skin, often indicating poor perfusion or anemia.
Mottling: Patchy discoloration of the skin, often a sign of poor perfusion or cold.
Cyanosis: Bluish discoloration of the skin or mucous membranes (central cyanosis is a late and serious sign of hypoxemia).
Flushed Skin: Redness, often associated with fever or vasodilation.
Using the PAT in Practice
Perform the PAT immediately upon encountering the child, even before physical contact.
Use the PAT findings to rapidly categorize the child's condition:
Stable: Normal in all three sides of the triangle.
Respiratory Distress: Abnormal Work of Breathing, normal Appearance and Circulation.
Respiratory Failure: Abnormal Appearance, abnormal Work of Breathing, abnormal or normal Circulation.
Compensated Shock: Abnormal Circulation, normal Appearance and Work of Breathing (child is "looking bad" but still compensating).
Decompensated Shock/Cardiopulmonary Failure: Abnormal in two or all three sides of the triangle.
The PAT helps guide the urgency and type of intervention needed. Abnormal findings in any area warrant further, more detailed assessment and intervention.
Critical Thinking Questions
You arrive on scene to a 2-year-old child who is irritable, has retractions, and pale skin. Based on the Pediatric Assessment Triangle, what is your initial impression, and what immediate interventions would you prioritize?
Explain why observing the "Appearance" component of the PAT is often the most important for early identification of a sick pediatric patient.
A child presents with a normal appearance and circulation to the skin but has audible stridor. Which component of the PAT is abnormal, and what does this finding suggest about the child's respiratory status?
Discuss how the PAT differs from a traditional ABC (Airway, Breathing, Circulation) assessment and why the PAT is particularly beneficial in pediatric emergencies.
What are the potential pitfalls of relying solely on a hands-on physical exam before completing a PAT, especially in a rapidly deteriorating pediatric patient?