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Respiratory Care

Advancing respiratory health through innovative therapies

Hill-Rom® Respiratory Care

Comparison Guide

Design Matters When Selecting an Airway Clearance System

The Vest® System with True Flow™ design includes a uniquely designed airflow generator that delivers a comfortable, consistent air volume to the garment.  This results in predictable airflow performance.1

True Flow™ Design Delivers Airflow Performance

Proven Clinical Outcomes

Currently in its 5th generation, The Vest® System has more than 25 years of peer-reviewed clinical articles.  In one study, 94% of patients who used The Vest® System had better than expected lung function scores after an average of 22 months based on the previous two years of manual CPT.3-6

Head to Head Comparison

Why Choose The Vest® System?

The Vest® System by Hill-Rom has a True Flow™ design that results in more airflow.1  Airflow bias is required for appropriate secretion movement.7,8  The Vest® System has more than 25 years of peer-reviewed clinical articles with proven clinical outcomes.  Patients who choose The Vest® System may experience better mobilization of retained secretions helping them to Breathe a Little Easier™.


1Independent lab testing analyzed and compared average airflows at the mouth generated by high frequency chest wall oscillation (HFCWO) therapy in 10 subjects using home care garments. Airflows measured at commonly prescribed medium pressures (50% of maximum) at multiple therapy frequencies (5, 10, 15, and 20 Hz). Test data and reports on file at Hill-Rom, Inc.
2Market data and reports on file with Hill-Rom, Inc.
3Clinical studies with patients using HFCWO therapy as listed in a PubMed search through 2015. Includes HFCWO devices from Hill-Rom, Electromed, International Biophysics Corporation and Respiratory Technologies, Inc. On file at Hill-Rom, Inc.
4Warwick W, Hansen L. The long-term effect of high-frequency chest compression therapy on pulmonary complications of cystic fibrosis. Pediatr Pulmonol 1991; 11: 265-271.
5Nicolini A, Cardini F, Landucci N, et al. Effectiveness of treatment with high-frequency chest wall oscillation in patients with bronchiectasis. BMC Pulm Med 2013; 13-21.
6Report prepared by Milliman for Hill-Rom on January 16, 2012. Results in this report are technical in nature and are dependent upon specific assumptions and methods. Reference on file at Hill-Rom, Inc.
7King M, et al. Tracheal mucus clearance in high-frequency oscillation. II: Chest wall versus mouth oscillation. Am Rev Respir Dis, 1984. 130(5): p. 703-6.
8Freitag L, et al. Removal of excessive bronchial secretions by asymmetric high-frequency oscillations. J Appl Physiol 1989; 67: 614-9.
9Sound testing results based on an average noise level at 4 microphone positions at 1 meter.  Sound for each device measured at medium pressure at frequencies of 5, 10, 15, and 20 Hz.  A comfortable hearing level is typically considered at 60 dB and lower.  Reference on file at Hill-Rom, Inc.
10About the connection between sound level and loudness, there are various therories.  Research by Richard M. Warren leads to a level difference of 6 dB.*  This means that a double sound pressure corresponds to a double loudness.  Richard M. Warren, "Elimination of Biases in Loudness Judgments for Tones."

The Vest®, True Flow™, and Breathe a Little Easier™ are registered trademarks or trademarks of Hill-Rom Services PTE Ltd.
inCourage® and RespirTech® are registered trademarks of Respiratory Technologies, Inc.
SmartVest® and SQL® are registered trademarks of Electromed, Inc.
AffloVest® is a registered trademark of International Biophysics Corporation.

©2017 Hill-Rom Services PTE Ltd. ALL RIGHTS RESERVED.
201604 rev 2 04-APR-2017 ENG – US