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TerminatedNCT04590014Updated Mar 20, 2024Results posted

Clinical Efficacy in Relief of Dyspnea by HVNI: Evaluation of New Device Equivalence

An interventional study of Conventional Precision Flow and HVNI HVT2.0 Device in Dyspnea, Hypercapnia and Respiratory Insufficiency, sponsored by Vapotherm, Inc.. Terminated at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2024-03-20.

Sponsored by Vapotherm, Inc. · Not applicable, Interventional, and Treatment

Why this study was terminated
Study was not needed from trial standpoint
Phase
Not applicable
Study type
Interventional
Enrollment
5
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This study will evaluate the ability of a new High Velocity Nasal Insufflation [HVNI] device design to effect ventilation and related physiological responses relative to the current HVNI device design.

Read the detailed description

The objective of this study is to evaluate the ability of a new HVNI device to improve ventilation, dyspnea, and related physiological responses relative to the conventional Precision Flow device design, with which there are published clinical outcomes data. It is hypothesized that the new HVNI device design (V2.0) will be comparable at relieving patient dyspnea when compared to the conventional HVNI device design (Precision Flow).

02

Conditions studied

  • Dyspnea
  • Hypercapnia
  • Respiratory Insufficiency
03

In context

Dyspnea

656 studies on the registry are indexed under Dyspnea; 153 are open to participants now.

This study's enrollment of 5 is below the median of 48 across 430 interventional studies indexed under Dyspnea.

Browse Dyspnea studies →

Lead sponsor

Vapotherm, Inc. is the lead sponsor of 10 studies on the registry; none are open to participants now.

Of its 6 completed or terminated interventional studies of FDA-regulated products, 6 (100%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Adult inpatients (18 years of age and older)
  • Demonstrated severe dyspnea at baseline (Borg Rated Perceived Dyspnea [RPD] (scale 0-10) of 3 or higher)
  • Severe baseline hypercarbia/hypercapnia of 55 mmHg or higher as measured by TcPCo2 or arterial or venous blood gas

Exclusion criteria

Exclusion Criteria:

  • Patient has unstable cardiovascular condition
  • Significant unilateral or bilateral nasal occlusion
  • Inability to provide informed consent
  • Pregnancy
  • Known contraindication to perform steps of the protocol
  • Absence of spontaneous respiration or known contraindication to HVNI
  • Inability to use HVNI therapy
  • Agitation or uncooperativeness
  • Determined by the clinician to be sufficiently unstable or unsuitable for this study
05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Crossover assignment
Masking
None (open label)
Enrollment
5 participants (actual)

Study arms

  • Experimental
    Conventional HVNI First, Then New HVNI Second (Randomized)

    The purpose of this intervention is to evaluate the efficacy of the conventional HVNI device design (Precision Flow) to provide targeted relief of dyspnea. The purpose of this intervention is to evaluate the efficacy of a new HVNI device design (V2.0) to provide targeted relief of dyspnea.

    Device: Conventional Precision Flow · Device: HVNI HVT2.0 Device

  • Experimental
    New HVNI First, Then Conventional HVNI Second (Randomized)

    The purpose of this intervention is to evaluate the efficacy of the conventional HVNI device design (Precision Flow) to provide targeted relief of dyspnea. The purpose of this intervention is to evaluate the efficacy of a new HVNI device design (V2.0) to provide targeted relief of dyspnea.

    Device: Conventional Precision Flow · Device: HVNI HVT2.0 Device

Interventions

  • DeviceConventional Precision Flow

    Patients will be placed on HVNI therapy using Vapotherm's conventional HVNI device design (Precision Flow). Patients will receive HVNI therapy through an appropriately-fitted Prosoft dual-pronged nasal cannula. Physiologic and ventilation parameters will be recorded.

    Also known as: Vapotherm Precision Flow

  • DeviceHVNI HVT2.0 Device

    Patients will be placed on HVNI therapy using Vapotherm's new HVNI device design (V2.0). Patients will receive HVNI therapy through an appropriately-fitted Prosoft dual-pronged nasal cannula. Physiologic and ventilation parameters will be recorded.

    Also known as: HVNI Device Vapotherm V2.0

06

What researchers measure

Primary outcomes

  1. Patient Vital Signs -- Rated Perceived Dyspnea (RPD)

    Patient's subjective assessment of their dyspnea, rated as a modified Borg score on a scale from 0 to 10. Higher scores indicate a worse outcome.

    Time frame: Through study completion, an average of 1.6 hours

Secondary outcomes

  1. Patient Vital Signs - Heart Rate [HR]

    Heart rate, measured in beats per minute (bpm)

    Time frame: Through study completion, an average of 1.6 hours

  2. Patient Vital Signs - Respiratory Rate [RR]

    Respiratory rate, measured in breaths per minute (brpm)

    Time frame: Through study completion, an average of 1.6 hours

  3. Patient Vital Signs - Blood Pressure [BP]

    Blood pressure (systolic) measured in mmHg

    Time frame: Through study completion, an average of 1.6 hours

  4. Patient Vital Signs - Arterial Oxygen Saturation [SpO2]

    SpO2 measured as percentage of oxygen saturation (%)

    Time frame: Through study completion, an average of 1.6 hours

  5. Patient Vital Signs - Transcutaneous CO2 [TcPCO2]

    TcPCO2, measured as percentage of CO2 (%)

    Time frame: Through study completion, an average of 1.6 hours

07

Results

Posted Mar 20, 2024

Participant flow

Participant flow — Overall Study
MilestoneConventional HVNI First New HVNI Second (Randomized)New HVNI First, Conventional HVNI Second (Randomized)
Started23
Completed13
Not completed10
Withdrew: Withdrawal by subject10

Outcome measures

PrimaryPatient Vital Signs -- Rated Perceived Dyspnea (RPD)

Patient's subjective assessment of their dyspnea, rated as a modified Borg score on a scale from 0 to 10. Higher scores indicate a worse outcome.

Time frame:
Through study completion, an average of 1.6 hours
Reported as:
Median · Units on a scale
Patient Vital Signs -- Rated Perceived Dyspnea (RPD)
Units on a scalePrecision FlowHVT 2.0
Baseline2.5 (.98 to 4.02)3 (.61 to 5.38)
Therapeutic Characterization once the HVNI settings are having a therapeutic effect.2.5 (0.25 to 4.75)2 (0.00 to 4.00)
SecondaryPatient Vital Signs - Heart Rate [HR]

Heart rate, measured in beats per minute (bpm)

Time frame:
Through study completion, an average of 1.6 hours
Reported as:
Median · bpm
Patient Vital Signs - Heart Rate [HR]
bpmPrecision FlowHVT 2.0
Baseline81 (78.24 to 83.76)76.5 (72.32 to 80.68)
Therapeutic Characterization once the HVNI settings are having a therapeutic effect.81.5 (79.98 to 83.02)79 (75.47 to 82.53)
SecondaryPatient Vital Signs - Respiratory Rate [RR]

Respiratory rate, measured in breaths per minute (brpm)

Time frame:
Through study completion, an average of 1.6 hours
Reported as:
Median · breaths per min
Patient Vital Signs - Respiratory Rate [RR]
breaths per minPrecision FlowHVT 2.0
Baseline19 (11.42 to 26.58)17 (12.89 to 21.11)
Therapeutic Characterization once the HVNI settings are having a therapeutic effect.16 (8.94 to 23.06)12 (6.49 to 17.51)
SecondaryPatient Vital Signs - Blood Pressure [BP]

Blood pressure (systolic) measured in mmHg

Time frame:
Through study completion, an average of 1.6 hours
Reported as:
Median · mmHg
Patient Vital Signs - Blood Pressure [BP]
mmHgPrecision FlowHVT 2.0
Baseline Systolic126.5 (108.07 to 144.98)125 (90.87 to 159.13)
Baseline Diastolic63 (47.09 to 78.91)68.5 (53.61 to 83.29)
Therapeutic Systolic129 (111.70 to 146.30)136 (104.46 to 166.54)
Therapeutic Diastolic73.5 (55.15 to 91.85)68.5 (57.84 to 79.16)
SecondaryPatient Vital Signs - Arterial Oxygen Saturation [SpO2]

SpO2 measured as percentage of oxygen saturation (%)

Time frame:
Through study completion, an average of 1.6 hours
Reported as:
Median · % oxygen
Patient Vital Signs - Arterial Oxygen Saturation [SpO2]
% oxygenPrecision FlowHVT 2.0
Baseline96 (94.00 to 98.00)95 (88.85 to 101.15)
Therapeutic Characterization once the HVNI settings are having a therapeutic effect.94.5 (93.58 to 95.42)94.5 (90.71 to 98.29)
SecondaryPatient Vital Signs - Transcutaneous CO2 [TcPCO2]

TcPCO2, measured as percentage of CO2 (%)

Time frame:
Through study completion, an average of 1.6 hours
Reported as:
Median · % CO2
Patient Vital Signs - Transcutaneous CO2 [TcPCO2]
% CO2Precision FlowHVT 2.0
Baseline52.1 (30.03 to 74.17)54.8 (42.30 to 67.31)
Therapeutic Characterization once the HVNI settings are having a therapeutic effect.49.9 (15.14 to 84.66)53.1 (41.36 to 64.84)

Adverse events

Collected over For the duration of the study, from baseline to end of study, which was about 1.65 hours. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Precision Flow0/4 (0%)0/4 (0%)0/4 (0%)
HVT 2.00/4 (0%)0/4 (0%)0/4 (0%)

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Conventional HVNI First New HVNI Second (Randomized)New HVNI First, Conventional HVNI Second (Randomized)Total
<=18 years000
Between 18 and 65 years000
>=65 years134
Sex: Female, Male
Sex: Female, Male(Participants)Conventional HVNI First New HVNI Second (Randomized)New HVNI First, Conventional HVNI Second (Randomized)Total
Female000
Male134
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Conventional HVNI First New HVNI Second (Randomized)New HVNI First, Conventional HVNI Second (Randomized)Total
American Indian or Alaska Native000
Asian000
Native Hawaiian or Other Pacific Islander000
Black or African American000
White134
More than one race000
Unknown or Not Reported000
08

Study locations

1 site
  • VA Pittsburgh Healthcare System
    Pittsburgh, Pennsylvania 15240, United States
09

References and documents

Study documents

  • Protocol and statistical analysis plan · Jun 11, 2021

Documents are hosted by the registry — open the source record to download them.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 20, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT04590014
Lead sponsor
Vapotherm, Inc.
Collaborators
VA Pittsburgh Healthcare System
Responsible party
Sponsor
First posted
Oct 19, 2020
Start date
Jan 12, 2022
Primary completion
Jul 15, 2022
Completion
Jul 15, 2022
Results posted
Mar 20, 2024
Last update
Mar 20, 2024

Study contacts

Charles Atwood
principal investigator · VA Pittsburgh Healthcare System

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

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