2.2 Protocol 6: Breathing Problems & Respiratory Distress
Key Takeaways
- Protocol 6 codes ineffective breathing as the ECHO determinant 6-E-1 and treats not alert, difficulty speaking between breaths, changing color, clamminess, and tracheostomy distress as DELTA; it has no ALPHA or BRAVO level.
- Structured Key Question interrogation evaluates speaking ability, skin color, and perfusion; an inability to speak in full sentences signifies severe respiratory compromise and impending muscle fatigue.
- Acoustic triage differentiates airway sounds: stridor signals critical upper airway obstruction requiring urgent intervention, whereas wheezing indicates lower airway bronchospasm (asthma/COPD).
- Dispatchers must never assume rapid breathing is caused by anxiety or hyperventilation until all organic, pulmonary, and cardiac causes of dyspnea are eliminated; paper bag breathing is strictly prohibited.
- Post-Dispatch Instructions require placing conscious breathing patients into a seated upright position of comfort, loosening restrictive clothing, assisting with prescribed inhalers, and maintaining strict NPO (no food or fluids).
Protocol 6: Breathing Problems & Respiratory Distress
Quick Answer: Protocol 6 triages conscious patients experiencing acute dyspnea, asthma exacerbations, COPD complications, and airway distress. Acuity is stratified primarily by speaking difficulty, respiratory effectiveness, and hemodynamic perfusion: patients who cannot speak in full sentences or who are clammy/cold-sweating qualify as DELTA emergencies. EMDs must never assume hyperventilation is benign anxiety and must never advise paper bag breathing. Post-Dispatch Instructions focus on sitting the patient upright, loosening tight garments, assisting with prescribed bronchodilators, and continuous monitoring.
Clinical Anatomy of Respiratory Emergencies: Ventilation vs. Oxygenation
Respiratory emergencies represent one of the most dynamic call types encountered in emergency medical dispatch. Respiratory compromise quickly shifts between two distinct physiological failures:
- Ventilatory Failure: The physical mechanics of air movement into and out of the lungs fail. This occurs in severe bronchospasm (status asthmaticus), chronic obstructive pulmonary disease (COPD), respiratory muscle exhaustion, or mechanical upper airway obstruction.
- Oxygenation Failure: Gas exchange across the alveolar-capillary membrane is impaired despite physical ventilation. This occurs in pulmonary edema (congestive heart failure), severe pneumonia, acute respiratory distress syndrome (ARDS), or pulmonary embolism.
When respiratory muscles fatigue, carbon dioxide builds rapidly in the bloodstream ($PaCO_2 > 50\text{ mmHg}$), inducing respiratory acidosis, lethargy, and sudden cardiorespiratory arrest. The EMD's interrogation must detect the precise inflection point where respiratory distress deteriorates into respiratory exhaustion and failure.
Structured Interrogation: The Protocol 6 Key Questions
Once Case Entry establishes that the patient is conscious and breathing, Protocol 6 directs the dispatcher through a mandatory sequence of Key Questions engineered to identify physiological compromise:
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| PROTOCOL 6 KEY QUESTION SEQUENCE |
| |
| 1. "Is the patient breathing normally now?" |
| 2. "Are they able to speak a full sentence without pausing?" |
| 3. "What color is their skin? Are they clammy, or have cold sweats?" |
| 4. "Do they have a history of asthma, emphysema, or COPD?" |
| 5. "Do they have a tracheostomy (neck breathing tube)?" |
| 6. "Are they wheezing or making a harsh high-pitched sound?" |
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1. Speaking Ability: The Diagnostic Hallmark
The ability to speak requires coordinated diaphragmatic excursion and sustained airflow. A patient who can converse in full sentences retains reasonable pulmonary reserve. Conversely:
- Two-to-Three Word Dyspnea: The patient must pause every few words to gasp for air. This indicates critical tidal volume reduction and imminent respiratory failure.
- Complete Inability to Speak: The patient communicates only through hand gestures or nodding. This is a life-threatening physiological collapse classified as DELTA acuity.
2. Perfusion and Skin Signs: Cyanosis and Clamminess
Skin appearance directly reflects sympathetic activation and end-organ perfusion:
- Cyanosis (Blue / Gray / Ashen): Indicates at least $5\text{ g/dL}$ of deoxygenated hemoglobin in arterial blood. Central cyanosis (lips, tongue, oral mucosa) represents profound hypoxemia.
- Clammy Skin / Diaphoresis (Cold Sweats): Indicates massive sympathetic adrenergic discharge. In a breathing patient, diaphoresis strongly correlates with respiratory muscle exhaustion, acute pulmonary edema, or cardiogenic shock, immediately triggering a DELTA determinant.
3. Acoustic Triage: Stridor vs. Wheezing vs. Rales
Dispatchers must listen attentively to background audio and interrogate callers about specific breath sounds:
- Stridor: A harsh, high-pitched, crowing sound heard predominantly on inspiration. Stridor originates in the extrathoracic upper airway (larynx or trachea) and indicates acute life-threatening narrowing from epiglottitis, croup, foreign body aspiration, or laryngeal edema.
- Wheezing: A high- or low-pitched musical whistling sound heard primarily on expiration. Wheezing is caused by diffuse bronchospasm and mucosal inflammation within the intrathoracic lower airways (asthma, COPD, anaphylaxis).
- Rales / Crackles: Wet, bubbling, or clicking sounds caused by fluid-filled alveoli popping open during inspiration, typical of congestive heart failure and pulmonary edema.
4. Specialized Airway Complications: Tracheostomies and Stomas
Patients with permanent tracheostomies or temporary tracheostomy tubes are exceptionally vulnerable to catastrophic mucus plugging. If the caller reports a tracheostomy patient struggling to breathe, the EMD must immediately determine if the tube is obstructed or dislodged and transition to specialized Dispatch Life Support instructions for suctioning or clearing the cannula.
Acuity Stratification & MPDS Determinant Coding
Protocol 6 categorizes patients into distinct determinant levels that drive local EMS response configurations:
PROTOCOL 6 ACUITY
|
+--------------------+--------------------+
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INEFFECTIVE BREATHING? CAN SPEAK FULL SENTENCE?
| |
YES +-----+-----+
| | |
ECHO (6-E-1) NO YES
Ineffective Breathing | |
Maximum Turnout + DLS DELTA (6-D-2) |
Difficulty |
speaking between |
breaths |
| |
CLAMMY / COLD SWEATS? |
| |
+-----+-----+ |
| | |
YES NO |
| | |
DELTA (6-D-4) CHARLIE |
Clammy or (6-C-1) |
cold sweats Abnormal |
breathing |
|
TRACHEOSTOMY (STOMA)?
|
+-----+-----+
| |
YES, in distress YES, no distress
| |
DELTA (6-D-5) CHARLIE (6-C-2)
Protocol 6 has NO ALPHA and NO BRAVO codes. Every breathing-problem
patient is coded CHARLIE or higher.
- ECHO (6-E-1 Ineffective breathing): The only ECHO code on Protocol 6. Maximum simultaneous turnout with immediate transition to Dispatch Life Support.
- DELTA (6-D-1 through 6-D-5): Immediate Advanced Life Support (ALS) response running with lights and siren (HOT). The five DELTA descriptors are 6-D-1 Not alert, 6-D-2 Difficulty speaking between breaths, 6-D-3 Changing color, 6-D-4 Clammy or cold sweats, and 6-D-5 Tracheostomy (obvious distress).
- CHARLIE (6-C-1, 6-C-2): The only two CHARLIE codes are 6-C-1 Abnormal breathing and 6-C-2 Tracheostomy (no obvious distress).
- No ALPHA or BRAVO exists on Protocol 6. This is a frequently tested point: because respiratory compromise deteriorates unpredictably, the MPDS floors every Protocol 6 patient at CHARLIE. Comorbidity is captured by suffixes instead —
A(asthma),E(emphysema/COPD), andO(other lung problems) — which add clinical context without changing the determinant level.
The Lethal Pitfall: Triaging Hyperventilation vs. Medical Dyspnea
One of the most dangerous cognitive traps in emergency dispatch is dismissing rapid, agitated breathing as "just a panic attack" or "hyperventilation syndrome." Callers frequently proclaim: "She's just hysterical, she's having a fight with her mother and hyperventilating!"
[!CAUTION] The Cardinal Rule of Dyspnea Interrogation: Never assume hyperventilation or anxiety until all organic, medical, and traumatic causes of dyspnea have been completely eliminated. The EMD must process the call according to the patient's objective physiological findings, not the caller's amateur psychological diagnosis.
Life-threatening conditions that present with tachypnea and agitation mimicking hyperventilation include:
- Pulmonary Embolism (PE): Sudden clot occlusion of the pulmonary arterial bed produces profound air hunger, tachypnea, tachycardia, and intense panic without initial wheezing.
- Diabetic Ketoacidosis (DKA): Deep, rapid, labored respirations (Kussmaul breathing) represent compensatory metabolic hyperventilation to blow off volatile acid ($CO_2$).
- Spontaneous Pneumothorax: Sudden rupture of a lung bleb creates acute unilateral pleuritic pain, hypoxia, tachypnea, and distress in previously healthy young adults.
- Aspirin / Salicylate Toxicity: Directly stimulates the medullary respiratory center, producing profound hyperventilation.
- Acute Myocardial Infarction: Severe dyspnea without chest pain is a frequent "anginal equivalent" in females and elderly patients.
The "Paper Bag" Prohibition
For decades, popular folklore advised breathing into a paper bag to treat hyperventilation. In modern dispatch medicine, advising a caller to use a paper bag is strictly and universally prohibited.
THE PAPER BAG BREATHING DANGER:
Re-breathing exhaled air lowers arterial oxygen and raises CO2.
In a patient suffering from pulmonary embolism, asthma, or acidosis,
hypercapnic hypoxia causes sudden fatal ventricular arrhythmias!
If an EMD directs a patient with pulmonary embolism, asthma, or metabolic acidosis to breathe into a paper bag, the resulting hypoxia and hypercapnia can induce sudden cardiac arrest. EMDs must calmly coach steady, slow breathing without mechanical barriers.
Post-Dispatch Instructions (PDIs) for the Conscious Breathing Patient
While emergency units are en route, the EMD must deliver scripted Post-Dispatch Instructions designed to optimize oxygenation and prevent secondary complications:
- Position of Comfort (High Fowler's): Instruct the caller to help the patient sit up in a comfortable position, typically upright or leaning slightly forward (the "tripod" position). Recumbency forces abdominal contents against the diaphragm, increasing the work of breathing and reducing vital capacity by 15% to 20%.
- Loosen Constricting Clothing: Have the caller loosen collars, ties, belts, or tight garments around the neck and chest to remove mechanical restrictions to thoracic expansion.
- Assist with Prescribed Bronchodilator Inhalers: If the patient has a prescribed rescue inhaler (e.g., albuterol) immediately available and is alert enough to self-administer, the EMD instructs: "Allow them to take their prescribed rescue inhaler if they haven't already."
- Strict NPO (Nothing by Mouth): Explicitly warn the caller: "Do not give them anything to eat or drink." Patients in severe respiratory distress frequently aspirate fluids into the lungs, causing acute chemical pneumonitis or complete airway obstruction.
- Continuous Surveillance: Instruct the caller: "If they become sleepy, confused, or stop breathing, call me back immediately." Any deterioration triggers an instant upgrade to Protocol 9.
Comparative Matrix: Severity Levels in Respiratory Distress
| Assessment Category | Ineffective / Failing Breathing | Severe Respiratory Distress | Mild to Moderate Distress |
|---|---|---|---|
| Determinant Code | 6-E-1 (ECHO) | 6-D-2 or 6-D-4 | 6-C-1 |
| Speaking Capacity | Incapable of speech; gasping | 1–3 word dyspnea | Speaks full sentences |
| Skin & Perfusion | Cyanotic, ashen, mottled | Pale, drenching cold sweats | Normal skin color, dry |
| Mental Status | Lethargic, stuporous, combative | Alert, visibly anxious | Fully alert and calm |
| Auscultation Sound | Silent chest (no air movement) | Loud wheezes or stridor | Mild expiratory wheeze |
| Response Mode | Maximum ECHO Turnout (HOT) | Full ALS Turnout (HOT) | ALS or BLS per local response plan |
| Dispatch Action | Prepare for immediate CPR | Upright position; inhaler coaching | Upright position; rest |
Dispatch Dialogue: Triaging Severe Asthma with Speaking Difficulty
EMD: "9-1-1, what is the address of the emergency?"
CALLER: "224 Oak Ridge Lane! My daughter can't breathe!"
EMD: "What is the phone number you're calling from?"
CALLER: "555-4921!"
EMD: "What's happened?"
CALLER: "Her asthma is flaring up bad, she's turning gray!"
EMD: "How old is she?"
CALLER: "She's 19."
EMD: "Is she awake?"
CALLER: "Yes, she's awake, but she's panicking!"
EMD: "Is she breathing normally?"
CALLER: "No! She's wheezing terribly and gasping for air!"
EMD: "Is she able to speak a full sentence without pausing?"
CALLER: "No, she can't even get out two words! She's just nodding and gasping!"
EMD: "Are her hands or skin clammy or cold sweating?"
CALLER: "Yes, her forehead is soaked in cold sweat!"
EMD: [CODES 6-D-2 / 6-D-4 -> SENDS MAXIMUM ALS RESPONSE]
"I've sent the paramedics to your address with lights and sirens. Stay on the line with me. Help her sit up straight, leaning slightly forward. Do not let her lie down."
CALLER: "Okay, she's sitting on the edge of the bed."
EMD: "Loosen any tight clothing around her neck and chest. Does she have her prescribed rescue inhaler right there?"
CALLER: "Yes, her albuterol pump is right here in her hand!"
EMD: "Let her use her inhaler as prescribed right now. Do not give her anything to drink. If she becomes sleepy or confused, tell me immediately."
A 24-year-old female caller is gasping for air, breathing rapidly, and crying hysterically following an intense emotional altercation. A bystander on the line insists: 'She just had a fight with her boyfriend and is having a panic attack, tell her to breathe into a paper bag.' How should the EMD triage and instruct this situation?
During Key Question interrogation on Protocol 6, a caller describes their 6-year-old child as having a harsh, high-pitched crowing noise each time the child breathes in, accompanied by retractions at the throat. What clinical condition and airway sound does this represent?
An adult male diagnosed with severe COPD is in acute respiratory distress. The caller reports that the patient is slumped in a chair, sweating heavily, pale, and only able to nod or whisper one word at a time. What MPDS determinant level is indicated, and what immediate positioning instruction should the EMD provide?