CPC Respiratory Assessment and Management 1 — Questions and Answers

Question 1: A community paramedic auscultates a patient's lungs and hears high-pitched, continuous musical sounds on expiration. These sounds are MOST consistent with:

Crackles (rales)
Wheezes (Correct answer)
Rhonchi
Pleural friction rub

Correct answer: Wheezes

Wheezes are high-pitched, continuous, musical breath sounds caused by air passing through narrowed airways. They occur most prominently on expiration and are characteristic of asthma, COPD exacerbation, and bronchospasm.

Breath sound classification: Crackles/Rales (discontinuous, non-musical — coarse crackles suggest secretions in large airways; fine crackles suggest fluid in alveoli, as in pulmonary edema or pneumonia), Wheezes (high-pitched, continuous, musical — bronchospasm, asthma, COPD), Rhonchi (low-pitched, continuous, snoring-like — secretions in large airways, often clear with coughing), Stridor (high-pitched, inspiratory — upper airway obstruction), Pleural friction rub (leathery, grating — pleural inflammation). Community paramedics document character (high/low pitched), timing (inspiratory/expiratory/both), and location of abnormal breath sounds in lung zone assessments.

Question 2: A community paramedic performs a pulse oximetry reading on a patient with COPD and records SpO2 of 88%. The patient is asymptomatic at rest. Per standard COPD management guidelines, what is the appropriate oxygen saturation TARGET for this patient?

Increase oxygen to achieve SpO2 ≥98%
Titrate oxygen to maintain SpO2 88–92% (Correct answer)
No intervention needed — COPD patients are always hypoxic
Administer high-flow oxygen via non-rebreather mask

Correct answer: Titrate oxygen to maintain SpO2 88–92%

For COPD patients, oxygen should be titrated to maintain SpO2 88–92% (target 90%). High-flow oxygen may suppress hypoxic drive and cause hypercapnic respiratory failure in CO2-retaining patients.

Patients with severe COPD may rely on hypoxic drive for respiratory stimulus (in CO2 retainers with chronic hypercapnia). Administering excessive supplemental oxygen can suppress this drive, leading to decreased ventilatory effort, CO2 retention, and hypercapnic respiratory failure. BTS and GOLD guidelines recommend targeting SpO2 88–92% for COPD patients with known or suspected hypercapnia. For most non-COPD patients, target SpO2 ≥94–96%. An SpO2 of 88% in an asymptomatic COPD patient may be their baseline — the community paramedic evaluates for acute changes from the patient's known baseline rather than applying normal reference ranges.

Question 3: The Modified Medical Research Council (mMRC) dyspnea scale classifies a patient who reports breathlessness only with strenuous exercise as which grade?

Grade 0 (Correct answer)
Grade 1
Grade 2
Grade 3

Correct answer: Grade 0

mMRC Grade 0: breathless only with strenuous exercise. Grade 1: breathless when hurrying on level ground or up a slight hill. Grade 2: walks slower than peers due to breathlessness. Grades 3–4 indicate severe functional limitation.

The Modified Medical Research Council (mMRC) Dyspnea Scale: Grade 0 (breathless only with strenuous exercise), Grade 1 (breathless when hurrying on level ground or walking up a slight incline), Grade 2 (walks slower than peers due to breathlessness, or must stop to rest when walking at own pace on level ground), Grade 3 (must stop to rest after walking ~100 meters or after a few minutes on level ground), Grade 4 (too breathless to leave the home, or breathless when dressing or undressing). mMRC is used in GOLD COPD assessment and helps community paramedics quantify functional impact of dyspnea for care planning and treatment titration.

Question 4: A community paramedic conducts a home visit for a patient being managed for pulmonary hypertension. Which finding warrants the MOST urgent escalation?

Mild bilateral ankle edema
Oxygen saturation of 94% at rest
Syncope during minimal exertion (Correct answer)
Mild dyspnea climbing one flight of stairs

Correct answer: Syncope during minimal exertion

Syncope with minimal exertion in a pulmonary hypertension patient indicates severely impaired cardiac output and is a WHO functional class IV symptom — a medical emergency requiring immediate evaluation for RV failure, arrhythmia, or hemodynamic collapse.

WHO Functional Classification for Pulmonary Hypertension: Class I (asymptomatic), Class II (mild limitation with ordinary activity), Class III (marked limitation with less-than-ordinary activity), Class IV (symptoms at rest, inability to carry on any activity without discomfort). Syncope with minimal exertion is a Class IV symptom and a high-risk marker for right ventricular failure and sudden cardiac death. It occurs when cardiac output cannot increase to meet even modest demands, causing cerebral hypoperfusion. Community paramedics immediately notify the pulmonary hypertension specialist team and activate EMS. Mild edema, SpO2 94%, and dyspnea on exertion represent less acute findings requiring monitoring and care team notification.

Question 5: During a COPD home visit, a patient reports their sputum has changed from its usual white/clear color to yellow-green with increased volume. This MOST likely indicates:

Adequate hydration and normal mucus production
Acute COPD exacerbation with possible bacterial infection (Correct answer)
Resolution of a prior pneumonia episode
Normal variation in COPD sputum production

Correct answer: Acute COPD exacerbation with possible bacterial infection

Purulent (yellow-green) sputum with increased volume is a hallmark sign of an acute COPD exacerbation, often with bacterial infection, and is one of the three Anthonisen criteria used to guide antibiotic initiation decisions.

The Anthonisen criteria for AECOPD (Acute Exacerbation of COPD) include three major symptoms: (1) increased dyspnea, (2) increased sputum volume, (3) increased sputum purulence (yellow/green). Type 1 exacerbation (all 3 present) or Type 2 exacerbation (2 of 3) with increased purulence are indications for antibiotics. Common bacterial pathogens in AECOPD include Haemophilus influenzae, Streptococcus pneumoniae, and Moraxella catarrhalis. Community paramedics assess sputum character change, peak flow measurements, and baseline comparison to determine whether home-based management, telemedicine escalation, or emergency transport is indicated.

Question 6: A community paramedic is assessing respiratory rate in a patient. What is the correct technique for measuring respiratory rate?

Count breaths for 15 seconds and multiply by 4
Count breaths for a full 60 seconds without informing the patient (Correct answer)
Ask the patient to count their own breaths for 30 seconds
Count breaths while simultaneously taking the pulse for accuracy

Correct answer: Count breaths for a full 60 seconds without informing the patient

Respiratory rate should be counted for a full 60 seconds without informing the patient, as patients tend to alter their breathing pattern when aware they are being observed. A 15-second count is less accurate due to rounding errors.

Respiratory rate is one of the most important — and most frequently poorly measured — vital signs. Key technique points: (1) count for a full 60 seconds (not 15s × 4, which introduces significant error); (2) do not inform the patient you are counting respirations, as awareness causes voluntary modification; (3) observe chest or abdominal movement (or auscultate) — do not rely on patient self-report; (4) note the depth and pattern (regular, irregular, Cheyne-Stokes, Kussmaul, Biot's); (5) normal adult rate is 12–20 breaths/minute. Tachypnea (>20) in a stable COPD patient may signal early decompensation. Community paramedics are trained to avoid the common shortcut of counting for 15 seconds.

CPC Respiratory Assessment and Management 1

A community paramedic auscultates a patient's lungs and hears high-pitched, continuous musical sounds on expiration.
These sounds are MOST consistent with: