Respiratory Therapists
Scrub through 93years of this role's history, from when it first emerged, through every wave of technology that reshaped it, to the cited projections for where it's heading next.
The tools that defined the work
Select an era to see how it reshaped the work.
Iron lung (negative-pressure tank ventilator, Drinker-Shaw 1928, Emerson 1931)
The iron lung was developed by Philip Drinker and Louis Shaw at Harvard University in 1928 and improved by John Haven Emerson in 1931. It saved patients with polio-induced respiratory paralysis by enclosing the body in a sealed metal cylinder and alternating the internal pressure to force the lungs to breathe. The machine was heavy, expensive, and required constant monitoring: the patient could not be repositioned easily, secretions had to be cleared through portholes, and any mechanical failure was immediately life-threatening. The workers who operated these machines were the first respiratory therapy workforce: they transported tanks between hospital wards, monitored pressure cycling, and cleared airway secretions manually. The polio epidemic of 1952, with 52,628 US cases, placed tank ventilators in every major hospital and created institutional demand for dedicated inhalation technicians that outlasted the polio era itself.
Effect on the workThe iron lung created the profession from nothing: before it, oxygen therapy was a nursing side task. By the late 1950s, the US had hundreds of trained inhalation therapy technicians whose skills transferred directly to the positive-pressure ventilators that replaced the iron lung.
Work toolChanging equipment Bird Mark 7 positive-pressure respirator (IPPB era, 1955-1975)
Forrest Bird, a former U.S. Army aviator, developed the Bird Mark 7 respirator around 1954-1955 and formally announced it in the June 1958 issue of the Inhalation Therapy journal. The Mark 7 was the first lightweight portable positive-pressure breathing machine: pneumatically driven, requiring no electrical connection, and operable by a single trained technician at the bedside. It delivered intermittent positive-pressure breathing (IPPB) and aerosolized medications simultaneously, replacing the glass nebulizers and rubber oxygen masks that had preceded it. The Bird Mark 7 made the inhalation therapist indispensable to hospital respiratory care: only therapists were trained to set up, calibrate, and troubleshoot these machines. By the 1960s, IPPB therapy was prescribed for nearly every pulmonary patient in American hospitals, driving rapid expansion of training programs and workforce size. The IPPB era ended when randomized studies in the 1970s showed that IPPB delivered 35% less medication to the lungs than simpler nebulizer therapy, causing insurance companies and hospital administrators to question its cost-effectiveness.
Effect on the workThe Bird Mark 7 era roughly tripled the inhalation therapy workforce from an estimated 5,000 in 1960 to approximately 25,000 by the early 1970s, as IPPB therapy was prescribed at high rates across medical and surgical wards.
Work toolChanging equipment Continuous positive airway pressure (CPAP) and volume-cycled ICU ventilators
CPAP was introduced in 1971 by George Gregory at UCSF as a treatment for neonatal respiratory distress syndrome, demonstrating that continuous positive pressure could keep premature lungs open without full mechanical ventilation. Simultaneously, volume-cycled ventilators (Engstrom, Bennett MA-1, Bear Medical) replaced the earlier pressure-cycled Bird Mark 7 in ICUs, providing more precise control of tidal volume and respiratory rate for critically ill adults. This era defined the modern respiratory therapy scope of practice: therapists were now essential members of the intensive care team, managing ventilator settings, performing arterial blood gas analysis, and titrating FiO2 and PEEP for ARDS patients. The ICU became the primary workplace for the profession, a shift that remains true today (approximately 80% of RTs work in acute care hospital settings).
Effect on the workThe ICU ventilator era professionalized the workforce: the National Board for Respiratory Therapy (NBRT) was established in 1974, the Registered Respiratory Therapist (RRT) credential was created, and training programs shifted from hospital-based apprenticeship to community-college associate degree programs. Workforce growth continued steadily through the 1970s and 1980s.
Work toolChanging equipment CPAP for obstructive sleep apnea (Sullivan 1981, ResMed commercialization 1989)
Colin Sullivan at the University of Sydney published the first use of continuous positive airway pressure for obstructive sleep apnea in 1981, using a vacuum-cleaner motor blowing air through a foam mask. ResMed was founded in 1989 to commercialize CPAP devices, and by the 1990s home CPAP therapy was becoming a standard treatment for the roughly 22 million Americans with moderate-to-severe OSA. This opened an entirely new practice setting for RTs: the home medical equipment (HME) and sleep medicine sector. RT roles expanded to include sleep study patient titration, CPAP setup and education, adherence monitoring, and pressure adjustment for an increasingly large population of non-acute patients. The sleep apnea epidemic (driven by rising obesity rates) is now one of the primary structural growth drivers for the profession.
Effect on the workSleep medicine and home CPAP care added a significant ambulatory and home-based segment to the RT workforce. By the 2010s, RTs in HME companies and pulmonology/sleep medicine practices represented a meaningful share of the total profession, diversifying the historically hospital-only occupational footprint.
Work toolChanging equipment Microprocessor ventilators and protocol-driven liberation (Puritan Bennett 7200, ARDS Network protocols)
The Puritan Bennett 7200 (1985) and its successors introduced microprocessor control to ICU ventilators, enabling pressure-support ventilation, synchronized intermittent mandatory ventilation (SIMV), and the first automated alarm systems. The ARDS Network lung-protective ventilation protocol (2000), showing that low tidal volumes reduced ICU mortality from 39.8% to 31%, made evidence-based ventilator management a core RT competency. RT-driven weaning protocols reduced time to extubation from 16.76 days to 7.67 days compared to physician-directed weaning, a result that fundamentally repositioned the RT from equipment operator to clinical decision-maker. This era also saw the spread of pulmonary function testing suites, in which RTs performed spirometry, body plethysmography, and bronchoprovocation testing as diagnostic specialists.
Effect on the workProtocol-driven respiratory care increased the scope and professional authority of RTs substantially, enabling hospitals to use RT-led protocols in place of physician-order-by-order ventilator management. This efficiency gain expanded the RT's clinical role without reducing headcount.
Work toolChanging equipment Cloud-based remote CPAP monitoring (ResMed AirView, Propeller Health connected inhalers)
ResMed launched AirView in 2014, enabling RTs to monitor CPAP therapy compliance, residual apnea-hypopnea index, leak rate, and pressure trends for hundreds of patients remotely via a cloud dashboard, eliminating the need for routine in-office visits for therapy adjustments. Propeller Health (acquired by ResMed in 2018) added Bluetooth-connected inhaler sensors for asthma and COPD patients, surfacing controller adherence and rescue inhaler patterns with early exacerbation risk alerts. These platforms transformed sleep and chronic disease management from an episodic clinic visit model to a continuous remote monitoring model: a single RT could effectively manage a panel of 200-400 home CPAP or inhaler patients asynchronously. This is the inflection point where the RT's work began to scale through digital platforms rather than purely through additional headcount.
Effect on the workRemote monitoring platforms shifted a significant share of RT activity from in-person clinic visits to dashboard review and remote outreach, increasing panel capacity per therapist. This efficiency gain partially offset demographic growth in CPAP and COPD patient populations.
Bedside monitoringVitals at a glance AI-driven clinical decision support and closed-loop ventilation (Etiometry T3, INTELLiVENT-ASV, ResMed Smart Comfort)
The COVID-19 pandemic accelerated both the demand for respiratory therapists and the deployment of AI ventilator tools. Hamilton Medical's INTELLiVENT-ASV closed-loop mode, which automatically adjusts respiratory rate, tidal volume, PEEP, FiO2, and weaning transitions in real time, achieved lung-protective ventilation targets in 65% of COVID-19 ARDS patients versus 38% with conventional modes. Etiometry T3 received its tenth FDA 510(k) clearance in February 2025 and demonstrated in clinical studies that AI-assisted spontaneous breathing trial protocols reduced postoperative ventilation time by 30%, shortened ICU stays by 20%, and cut extubation failure from 13% to 0%. ResMed Smart Comfort received FDA clearance in December 2025 as the first AI-enabled device that automatically recommends personalized CPAP comfort settings without manual RT input, trained on 100 million nights of de-identified sleep data. The published clinical literature characterizes this era consistently as augmentation: AI systems surface recommendations and flag risks that the RT adjudicates, maintaining professional authority and licensure accountability. Only 8.9% of RTs described AI as "a big part of what we do" as of 2024 (PMC11405306), suggesting the adoption curve is still in early stages.
Effect on the workAI closed-loop ventilation tools reduce the average number of manual ventilator adjustments per weaning episode from approximately 7-9 to 2, freeing RT time for higher-acuity patient oversight. Remote AI monitoring platforms (Etiometry, Philips Capsule Surveillance) enable RTs to manage larger ICU panels without missing deterioration events. Net employment effect is positive: BLS projects +12% growth through 2034.
AI clinical supportSignals and alerts
What credible sources project
Scrub the slider past now to anchor each scenario on the scrubber. The spread is the range of futures credible sources project for this role.
What's shifting in the work right now
The historical view above shows how this role has moved. This is the present-day detail: which AI tools are picking up which tasks, where the edge still is, and the natural directions this work can grow.
What's changing in your day
Three parts of your work where AI is already doing real lifting, and what stays yours.
AI is sitting alongside you hereDocument respiratory care and maintain AI-assisted patient records — entering therapy assessments, ventilator settings, ABG results, and treatment responses into hospital EHR systems (Epic, MEDITECH) using structured respiratory care flowsheets
Document respiratory care and maintain AI-assisted patient records — entering therapy assessments, ventilator settings, ABG results, and treatment responses into hospital EHR systems (Epic, MEDITECH) using structured respiratory care flowsheets; reviewing and editing AI-ambient-scribe-generated therapy notes for accuracy before attestation; maintaining ventilator flowsheets and weaning documentation compliant with The Joint Commission and CMS requirements; ensuring data completeness for AI monitoring platform inputs (Etiometry T3, Capsule Surveillance) that depend on accurate real-time EHR data feeds; generating shift-end summaries of ventilated patient status for hand-off communication.[9],[1]
Ambient AI scribe technology is penetrating hospital documentation workflows broadly — Emory Healthcare (2025 JAMA study) saw a 30.7% improvement in documentation well-being with ambient AI, and Cleveland Clinic saved 14 minutes of documentation time per clinician per day. RT flowsheet documentation is structured and relatively formulaic compared to physician narrative notes, making it well-suited for AI-assisted generation. However, RT attestation remains legally required for all ventilator orders and respiratory care documentation — AI drafts require RT review, correction, and sign-off. Invest in EHR optimization for your department's RT flowsheets (build best-practice advisories for lung-protective ventilation compliance; automate ABG-to-ventilator-change documentation pathways) — the RT who drives institutional documentation efficiency becomes a valued operations partner, not just a clinical worker.
AI is sitting alongside you hereManage sleep therapy patients using AI-augmented remote monitoring — reviewing AirView cloud dashboard data for CPAP-treated obstructive sleep apnea (OSA) patients (residual AHI, leak rate, usage hours, pressure trends)
Manage sleep therapy patients using AI-augmented remote monitoring — reviewing AirView cloud dashboard data for CPAP-treated obstructive sleep apnea (OSA) patients (residual AHI, leak rate, usage hours, pressure trends); using ResMed Smart Comfort AI recommendations to configure personalized comfort settings (pressure ramp, EPR, humidity) for new AirSense 11 patients without requiring office visits; monitoring Propeller Health dashboard for COPD and asthma patients (controller adherence trends, rescue inhaler frequency, early exacerbation risk alerts); adjusting CPAP/BiPAP prescriptions based on remote data and communicating changes to the prescribing physician; contacting patients flagged by AI for low adherence or elevated rescue-inhaler use to provide telehealth coaching.[7],[10]
ResMed AirView, Smart Comfort, and Propeller Health collectively shift sleep and chronic respiratory disease management toward remote asynchronous monitoring — an RT managing a panel of 300+ CPAP patients via dashboard review is operating at a fundamentally different scale than one requiring office visits for every adjustment. Lean into this capacity expansion: develop competency in OSA comorbidity management (hypertension, atrial fibrillation, heart failure overlap), pursue AARC Certified Respiratory Therapist in Sleep Medicine (RRT-SDS) credential, and position yourself as the clinical authority who interprets AI-generated adherence and pressure data in the context of the full patient history. The RTs who master AI-assisted remote patient monitoring workflows will own the fastest-growing segment of the respiratory therapy market — driven by aging population, obesity-related OSA surge, and the proven cost-reduction potential of proactive CPAP management.
AI is sitting alongside you hereConduct pulmonary function testing (PFT) and interpret AI-assisted diagnostic results — performing spirometry (FVC, FEV1, FEV1/FVC, DLCO), body plethysmography, and bronchoprovocation testing per ATS/ERS standards
Conduct pulmonary function testing (PFT) and interpret AI-assisted diagnostic results — performing spirometry (FVC, FEV1, FEV1/FVC, DLCO), body plethysmography, and bronchoprovocation testing per ATS/ERS standards; applying quality control criteria for maneuver acceptability and reproducibility; reviewing AI-generated PFT interpretive suggestions (from platforms achieving 82% diagnostic accuracy vs. pulmonologists' 44.6% in recent studies) against raw waveform data and patient clinical context; reviewing chest X-ray AI abnormality detection output (Lunit INSIGHT CXR4: 12 abnormality types, 99.7% sensitivity) for radiographic findings relevant to respiratory diagnosis and therapy planning; synthesizing PFT and imaging findings into therapy and follow-up recommendations.[3],[11]
AI spirometry interpretation and chest X-ray analysis are among the most advanced AI augmentation tools in respiratory care — published studies show AI spirometry interpretation significantly outperforms pulmonologist baseline on routine pattern recognition tasks. This is not a threat to the RT; it is a capability upgrade: AI pattern recognition surfaces the diagnosis faster, and the RT's value is in the QC review of maneuver quality (is this spirogram effort acceptable?), the integration of PFT results with clinical history, and the communication of findings to physicians and patients in actionable language. Build expertise in advanced PFT interpretation — DLCO for pulmonary fibrosis and emphysema quantification, exercise testing (6MWT, cardiopulmonary exercise testing) for surgical risk stratification — these are domains where RT expertise is indispensable and where AI tools are still in early validation.
Where this role is heading
Natural next steps for someone with your foundation: not exits, evolutions.
Medical and Health Services Managers
Experienced RTs — particularly those who have led protocol development, quality improvement, or department AI tool integration — frequently transition to respiratory care director, director of cardiopulmonary services, or medical and health services manager roles. The clinical credibility, regulatory knowledge (Joint Commission, CMS ventilator standards), and interdisciplinary communication skills developed as an RT map directly onto department leadership. AARC's clinical ladder and APRT pathway explicitly include administrative leadership as an advanced role. Median annual wage: $119,840 (BLS 2024), a substantial step up from $80,450 RT median.
- · Healthcare operations and department budget management
- · AARC-aligned quality metrics reporting (ventilator-associated events, SBT rates)
- · Staff scheduling, productivity benchmarking, and RT department staffing models
- · Joint Commission respiratory care standards and CMS compliance
- · Lean/Six Sigma quality improvement methodology
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