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Breathlessness - DiagnosE Early in Primary care (Breathe DEEP)

A feasibility study of a multi-centre cluster randomised controlled trial (RCT) to investigate whether a new diagnostic pathway is clinically and cost-effective for older adults presenting with chronic breathlessness compared to usual care

Status
Recruiting
Phases
Unknown
Study type
Interventional
Source
ISRCTN
Registry ID
ISRCTN14483247
Enrollment
10
Registered
2019-11-06
Start date
2019-11-05
Completion date
Unknown
Last updated
2025-09-08

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Chronic breathlessness in adults over the age of 40 Respiratory

Interventions

Randomisation will be clustered by GP practice with 5 practices in the Diagnostic pathway (intervention) arm and 5 practices in the Usual care arm. The intervention is a structured clinical diagnosti

Sponsors

University of Leicester
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Adults = 40 years old 2. Within two presentations to a GP with persistent exertional breathlessness for over 2 months 3. Able and willing to provide informed consent

Exclusion criteria

Exclusion criteria: 1. Presence of a known diagnosis for symptoms 2. A known active malignancy or other unrelated illness that is likely to result in a prognosis of less than 1 year 3. If patient requires immediate hospital admission

Design outcomes

Primary

MeasureTime frame
Recruitment rate assessed by the number of participants recruited over 12 months to inform number of GP practices needed for the ultimate cluster RCT accounting for population size

Secondary

MeasureTime frame
Secondary outcome measures will be collected to help inform outcomes for the larger trial, to assess the impact of an earlier diagnosis. Measured at a research visit within 1 month of the participant consenting to have their details passed to the study team, and at a further research visit 12 months later. There will also be an interim 6-month phone call and postal questionnaires. 1. Diagnoses made and time to diagnosis assessed using patient medical records at 3 months and 1 year 2. Exercise capacity assessed using the Incremental Shuttle Walk Test (ISWT) 3. Strength and balance assessed using quadriceps maximal voluntary contraction (QMVC), handgrip using dynamometer, Short Physical Performance Battery (SPPB) and Timed Up and Go (TUG) 4. Health-related quality of life assessed using: 4.1. Quality-Adjusted Life Years (QALYs) assessed using the Euroqol Five Dimension and Five Level questionnaire (EQ5D-5L) 4.2. The Chronic Heart Questionnaire Self-Report (CHQ-SR) 4.3. Dyspnoea-12 questionnaire 4.4. Multi-Dimensional Dyspnoea Profile 4.5. Baseline Dyspnoea Index and Transition Dyspnoea Index (BDI/TDI) 4.6. Hospital Anxiety and Depression (HAD) 4.7. Patient Activation Measure (PAM) 4.8. A Likert scale 5. Participant activity levels measured using activity monitors (GT3x Actigraph and GENEActiv) 6. Frailty measured using: 6.1. Fried’s frailty definition 6.2. Rockwood Frailty Scale 6.3. Timed Up and Go test 6.4. Short Physical Performance Battery 6.5. Handgrip and quadriceps strength will be conducted as per the relevant SOPs 7. Identify sources of data and collect data to plan the economic evaluation 8. Healthcare utilisation at 12 months from patient healthcare records 9. Hospital admissions at 12 months and 5 years using NHS digital 10. Mortality at 12 months and 5 years using NHS digital Semi-structured interviews with general practitioners, other relevant healthcare professionals and patients will be conducted to assess: 11. The acceptability of the research visi

Countries

England, United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 14, 2026