Survey distribution, response, demographics and experience of NAVA
| Characteristic | All staff | Nurses | Doctors | Physiotherapists |
| Years in KCH ICU | ||||
| <1 | 96/301 (31.9) | 70/236 (30.0) | 18/53 (35.9) | 7/12 (58.3) |
| 1–3 | 87/301 (28.9) | 71/236 (30.1) | 15/53 (28.3) | 1/12 (8.3) |
| 3–5 | 49/301 (16.3) | 41/236 (17.4) | 5/53 (9.4) | 3/12 (25.0) |
| >5 | 69/301 (22.9) | 54/236 (22.9) | 14/53 (26.4) | 1/12 (8.3) |
| Seniority* | ||||
| Junior | 193/297 (65.0) | 171/235 (72.8) | 19/50 (38.0) | 3/12 (25.0) |
| Middle grade | 54/297 (18.1) | 39/235 (16.6) | 11/50 (22.0) | 4/12 (33.3) |
| Senior | 50/297 (16.8) | 25/235 (10.6) | 20/50 (40.0) | 5/12 (41.7) |
| Familiarity with key concepts*† | ||||
| Risk factors for PMV | 289/294 (98.3) | 225/229 (98.3) | 52/53 (98.1) | 12/12 (100.0) |
| Evidence for PSV | 269/292 (92.1) | 211/227 (93.0) | 46/53 (86.8) | 12/12 (100.0) |
| Evidence for NAVA | 163/291 (56.0) | 120/226 (53.1) | 36/53 (67.9) | 7/12 (58.3) |
| Training and experience* | ||||
| NAVA trained | 157/295 (53.2) | 124/230 (53.9) | 28/53 (52.8) | 5/12 (41.6) |
| Any NAVA use | 207/294 (70.4) | 153/229 (66.8) | 47/53 (88.7) | 7/12 (58.3) |
| Approximate no of patients treated where NAVA was used* | ||||
| <5 | 143/287 (49.8) | 115/223 (51.6) | 24/53 (45.3) | 4/11 (36.4) |
| 5–20 | 62/287 (21.6) | 45/223 (20.2) | 15/53 (28.3) | 2/11 (18.2) |
| >20 | 16/287 (5.6) | 5/223 (2.2) | 10/53 (18.9) | 1/11 (9.1) |
| None | 66/287 (23.0) | 58/223 (26.0) | 4/53 (7.6) | 4/11 (36.4) |
| Frequency of NAVA use *‡ | ||||
| Use in past week? | 5/193 (2.6) | 2/141 (1.4) | 3/45 (6.7) | 0/12 (0.0) |
| Use in past month? | 16/193 (8.3) | 6/141 (4.3) | 10/45 (22.2) | 0/12 (0.0) |
| Use >1 month prior | 164/193 (85.0) | 125/141 (64.8) | 32/45 (71.1) | 7/12 (58.3) |
Data are number (%). Nurse and physiotherapist grade according to UK Agenda for Change (AFC) grades: Junior=AFC band 5; Middle=AFC band 6; Senior=AFC bands seven and above.
Doctors grades according to UK medical role classifications. Junior=foundation year 1/2 or equivalent; Middle=junior or senior middle grades (eg, specialty trainees, clinical fellows, senior house officers); senior=consultant level.
Bold/italic values represent the overall response rate, including all professions
*Numbers do not total 301 because not all participants answered every question. Denominators provided.
†Assessed on a five-point Likert scale: Not at all, slightly, moderately, very and extremely familiar. The presented data are the combined proportions answering either slightly, moderately, very or extremely familiar. See online supplemental file 2 for response numbers in each category.
‡Only staff reporting clinical exposure to NAVA were asked to complete this and subsequent questions.
KCH ICU, King's College Hospital Intensive Care Unit; NAVA, neurally adjusted ventilatory assist; PMV, prolonged mechanical ventilation; PSV, pressure support ventilation.