13.4 Home Testing Instruction & Patient Education

Education and Home Testing on the RPFT Blueprint

Not every Domain II item is a body-box maneuver. The NBRC PFT DCO includes competencies to select and carry out patient instruction / education and related procedures, including clusters commonly referenced as:

Corresponding II.B (perform) and II.C (evaluate validity / adequacy of the instruction outcome or home data) items ask whether the patient can actually demonstrate the skill and whether returned home values are believable.

Exact lettering should be confirmed against the current official DCO PDF; the skills—teach, return-demonstrate, catch bad home data—are what high-cut items test.

Instructing Home Spirometry

Home spirometers (hand-held turbines, ultrasonic devices, app-linked sensors) are increasingly used for transplant follow-up, clinical trials, and chronic disease programs. Your job is not to market a brand—it is to make the maneuver quality resemble lab standards as closely as the device allows.

Teaching points

1. Device setup: charged/battery OK, mouthpiece attached, Bluetooth/app paired if required, correct patient profile selected.
2. Posture: sit upright (or stand if program specifies), feet supported, no slouching.
3. Nose clip if the home program requires it (many do for FVC quality).
4. Maneuver: full inspiration to TLC, blast out hard and fast, continue to empty until the device signals end-of-test—same coaching concepts as lab spirometry (Chapter 8).
5. Number of efforts: complete the app/program’s required acceptable efforts; do not stop after one weak blow.
6. Timing: same time of day when possible; note bronchodilator timing relative to the program’s rules.
7. Hygiene: single-patient mouthpieces/filters per manufacturer; do not share devices across households without infection-control guidance.

Quality pitfalls (home data validity)

Teach-back: the patient performs while you watch (in person or video visit). If they cannot produce a reasonable effort after coaching, escalate to the clinical program rather than blessing unusable home monitoring.

Instructing Home Pulse Oximetry

Home oximeters are simple—and simply misused.

Instruction checklist

• Apply to a warm finger; remove dark nail polish if it interferes with the specific device.
• Rest the hand; avoid walking around while taking a “resting” reading unless the program wants ambulatory logs.
• Wait for a stable display; record SpO2 and pulse rate.
• Know the program’s alert thresholds (when to call the clinic vs emergency care)—these are clinician-set, not technologist invention.
• Understand limitations: motion, poor perfusion, carbon monoxide, and methemoglobin can fool consumer oximeters.

Quality pitfalls

Home oximetry logs that show SpO2 70% while the patient is texting cheerfully with a matching HR of 40 may be artifact—teach patients (and yourself) to question impossible combinations.

Patient Education: Inhaled Medication Delivery (II.A.3 / II.B.3, with II.11 patient education)

PFT labs give bronchodilators for response testing and often reinforce device technique because bad technique masquerades as nonresponse.

MDI (metered-dose inhaler)

Exam traps: firing MDI into the mouth without inhaling; multiple actuations stacked before one breath; failing to shake when required; using an empty canister.

DPI (dry-powder inhaler)

Patients with very low inspiratory flow may not empty a DPI—technologist-level awareness matters when educating and when interpreting “no BD response” after a DPI dose in lab.

Nebulizer

• Assemble cup, medication unit dose, tubing, mouthpiece or mask.
• Sit upright; breathe calmly through mouthpiece until sputter/time complete per protocol.
• Clean cup per infection-control instructions; home nebulizers grow biofilm if left wet.
• Match diluent/drug to order—do not substitute concentrations.

Inhaled medication delivery performance in the lab

When the lab administers bronchodilator for spirometry response (Chapter 8) or pre-challenge holds:

1. Verify drug, dose, route, time, allergies, and order.
2. Use correct device (MDI+spacer vs neb) per SOP.
3. Coach technique; watch the patient take the dose.
4. Start the wait clock for post-BD spirometry (commonly ~10–15 minutes for SABA—follow SOP).
5. Document what was given and when.
6. Evaluate whether a failed BD response might be failed delivery, not failed pharmacology.

Validity: a “no response” study after the patient clearly mishandled the MDI without correction is a II.C problem as much as a clinical one.

Travel with Oxygen and Asthma Action Concepts (Technologist Level)

Travel with oxygen (education scope)

Teach high-level, safety-oriented facts; specific airline forms and medical clearances are clinic/physician processes:

• Airlines generally do not allow personal compressed gas cylinders in the cabin the way patients expect; many require airline-approved portable oxygen concentrators (POCs) with battery-duration rules.
• Patients must plan battery hours for gate delays, not just scheduled flight time.
• Ground transport and destination supply need a plan before travel day.
• Do not empty or modify tanks unsafely; no petroleum products on cannula/hands near O2; no smoking.
• Cruise ships, high altitude destinations, and long road trips change O2 needs—escalate to the prescribing clinician for prescription adjustments.

Asthma action concepts (technologist level)

You reinforce the existence and use of a written asthma action plan (green/yellow/red zones) designed by the clinician:

Technologist role: encourage adherence to their plan, correct inhaler technique, and urge prompt care for red-zone symptoms. Do not rewrite medication doses on your own.

Peak-flow home monitoring, when used, needs personal best teaching and correct effort—similar quality rules to spirometry blasts.

Sputum Sample Collection Instruction (Brief)

When orders include sputum for culture, cytology, or acid-fast testing:

1. Explain difference between sputum (deep lung secretions) and saliva.
2. Prefer first-morning specimen for many protocols after rinsing mouth with water (not antiseptic mouthwash that kills organisms if culture is needed—follow lab manual).
3. Deep breath, hold, cough forcefully from the chest into sterile container; repeat to obtain adequate volume.
4. Close container without touching the inside; label at bedside/home with name, DOB, date/time.
5. Deliver promptly or refrigerate per microbiology instructions—do not leave in a hot car all day.
6. Induced sputum (hypertonic saline) is a supervised lab/procedure skill with bronchospasm risk—not a casual home activity.

Inadequate samples (saliva only) waste lab resources and delay diagnosis—teach-back reduces recollection rates.

Putting Education Validity Together (II.C concepts)

Clinical Scenario

A lung-transplant clinic sends a patient to the PFT lab for home spirometer training plus review of inhaler technique before travel. You select education content covering home FVC/FEV1 efforts, infection control for the mouthpiece, and MDI+spacer technique (II.A.3, II.A.10, II.A.11). The patient return-demonstrates three strong home-device blows and correct spacer use (II.B). You briefly review that their clinician-approved POC and batteries must be cleared with the airline—not a spare e-tank alone—and that yellow-zone symptoms mean follow their written action plan. For an ordered expectorated sputum culture the same morning, you coach a deep cough specimen after water rinse; the first attempt is saliva only—you re-coach and obtain a thicker specimen (II.A.5 / II.C.5 validity of specimen). Home data the following week shows a sudden 40% FEV1 drop with perfect app “quality stars” but the patient admits short efforts while reclining in bed—you flag technique failure rather than automatic rejection for retransplant workup without a confirmatory lab visit.

Link to Practice

/practice/rpftPractice questions with detailed explanations