Why they are different. Oncology patients on chemotherapy, solid organ and bone marrow transplant recipients, and patients with advanced HIV present respiratory emergencies that do not follow standard clinical patterns. The differential is wider — PCP pneumonia, fungal pneumonia, CMV pneumonitis, drug-induced pneumonitis from checkpoint inhibitors — and the clinical picture is often atypical. Fever may be absent. The CXR may be clear even with significant pulmonary infiltration.
The HFNC question. HFNC is reasonable as initial management but requires very close monitoring for trajectory, because delayed intubation in deteriorating immunocompromised patients significantly worsens outcomes. The RT's role is accurate trajectory assessment — not just managing the current device but calling the turn early before the patient decompensates.
Infection control differences. Immunocompromised patients are at risk from organisms that would not affect healthy hosts — including environmental molds and atypical pathogens. HEPA filtration in room air, N95 precautions when diagnosis is uncertain, and minimizing aerosol-generating procedures are RT-relevant infection control practices that differ from standard droplet-precaution patients.
The clinical skill that matters most: Reading trajectory in immunocompromised patients. A patient stable on HFNC at 40 L/min and FiO2 0.60 who requires FiO2 0.70 three hours later is telling you something important. That trajectory requires urgent communication — not a wait-and-see posture.
Where the evidence came from. Awake prone positioning — placing non-intubated, spontaneously breathing patients in the prone or semi-prone position — was used widely during COVID-19. Early observational data showed oxygenation improvements of 10 to 20 mmHg PaO2 in multiple case series.
What the RCT data shows. The COVI-PRONE trial, PROFLO trial, and 2022 individual patient data meta-analysis collectively show: awake prone positioning improves oxygenation transiently in approximately 70 percent of patients who comply. Benefit was most pronounced in patients tolerating at least 8 hours of prone positioning per day. Patients who could only tolerate short sessions had significantly attenuated benefit.
Beyond COVID in 2026. Awake prone positioning is now being studied in non-COVID hypoxemic respiratory failure — community-acquired pneumonia, immunocompromised patients on HFNC, and post-operative respiratory failure. The physiological rationale applies equally: prone positioning improves V/Q matching and recruits dependent lung regions that collapse in the supine position.
RT's practical role: Patient selection and compliance monitoring. Patients who cannot self-reposition or are too altered to cooperate are not candidates. Patients who can prone and will prone — with RT coaching — get the benefit. The RT is best positioned to assess candidacy and coach technique.
Why RTs are uniquely positioned here. Dyspnea is the most distressing symptom in end-of-life care, reported by 50 to 70 percent of dying patients. Respiratory therapists are the clinical specialists in managing dyspnea. And yet most RT programs provide minimal palliative training, and most palliative care teams do not routinely include RT in their consultative model.
What palliative RT practice looks like. High-flow nasal cannula as a comfort measure — for the sensation of airflow reducing perceived breathlessness. Fan therapy directed at the face activates trigeminal receptors and reduces perceived breathlessness independently of oxygenation. Collaboration with the palliative team on opioid dosing for dyspnea. Ventilator withdrawal — compassionate extubation in end-of-life scenarios.
Ventilator withdrawal specifically. Ventilator withdrawal is an RT-performed procedure in most ICUs. It requires technical expertise, compassionate presence, and clear communication with the family. Most RT training programs do not specifically prepare practitioners for this. Facilities with structured ventilator withdrawal protocols have significantly better family satisfaction scores and RT staff wellbeing outcomes.
One step: Ask your palliative care team whether RT is routinely included in goals-of-care family meetings for patients with primary respiratory failure. If not — propose it. The RT clinical perspective on what the vent is doing and what the patient's respiratory trajectory looks like is information those conversations need.
The growing population. Approximately 12,000 patients are discharged from U.S. hospitals on invasive home mechanical ventilation annually. The drivers are increasing survival from conditions that previously resulted in hospital death: ALS, advanced COPD, spinal cord injury, neuromuscular disease, and post-ARDS rehabilitation.
What hospital RTs need to know. The home ventilator is not the ICU ventilator with a different case. Home vents operate differently — volume-targeted pressure support modes, backup rate logic, leak compensation algorithms, and alarm threshold philosophies differ from acute care devices. An RT who manages an ICU ventilator all day cannot assume fluency on a Trilogy or Astral without specific training.
What a safe discharge requires. Documented patient and caregiver competency on the specific home device. Written emergency protocols for circuit disconnect, power failure, and device alarm situations. A follow-up appointment with a home vent-experienced RT within two weeks. Facilities that discharge without these elements have measurably higher 30-day readmission rates.
If your department discharges home vent patients: Audit your last 10 discharges. Was device-specific caregiver competency documented? Was there a structured follow-up plan? The readmission data at your facility will tell you whether the discharge process is working.
Next: Simulation training in respiratory therapy — how programs are using it and why your department should be.
Soon: Respiratory care in bariatric patients — the clinical considerations that differ from standard practice.
On deck: Medicare reimbursement updates for RT services in 2026 — what changed and what to know.
Staying at the vent,
15 years across academic medical centers & community hospitals
