Expiratory high-frequency percussive ventilation: a novel concept for improving gas exchange

Peták, Ferenc; Fodor, Gergely H.; Schranc, Álmos; Südy, Roberta; Balogh, Á.; Babik, Barna; Rocha, André Alexandre Dos Santos; Bayat, Sam; Bizzotto, Davide; Dellacà, Raffaele L.; Habre, Walid

doi:10.1186/s12931-022-02215-2

Cited by 3 publications

(3 citation statements)

References 41 publications

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“…HFFI (high-frequency flow interruption)-also known as HFPV (high-frequency percussive ventilation) is characterized by short bursts of gas delivered directly into the ventilator circuit without the injector cannula used in HFJV [5]; 4.…”

Section: High-frequency Jet Ventilationmentioning

confidence: 99%

Catheter High-Frequency Jet Ventilation and Its Basic Technical and Application Principles

Musil¹,

Harsanyi²,

Török³

et al. 2023

Preprint

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The aim of this publication is to analyze the topic of high-frequency jet ventilation (HFJV), namely the catheter HFJV (C-HFJV) from a mathematical-physical as well as a clinical point of view. There are known issues with applying anesthesia and artificial lung ventilation (ALV) during surgical procedures in the upper airways, e.g. during bronchoscopy or tracheostomy. The principles, advantages, and disadvantages of HFJV are discussed in context with basic physical principles to clarify the proper use of this method. The basic technical principles of catheter construction, as well as its functional properties from a biophysical point of view, are introduced. Also, the placement of the catheter in the airways, the set-up of the HFJV ventilator, and the indications as well as the risks and contraindications of the use of C-HFJV are analyzed. This leads to the explanation of potentially optimal techniques for C-HFJV applications. In this article, we present the positive effects of C-HFJV even with complications such as bacterial or viral pneumonia, including COVID-19. In conclusion, we offer recommendations for clinical practice obtained from a literature review as well as from our own rich clinical experience.

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Section: High-frequency Jet Ventilationmentioning

confidence: 99%

Catheter High-Frequency Jet Ventilation and Its Basic Technical and Application Principles

Musil¹,

Harsanyi²,

Török³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Types of HFV Techniques: HFPPV (high-frequency positive pressure ventilation)–high-frequency ventilation with positive pressure using a frequency of up to 200 cycles/min; HFJV (high-frequency jet ventilation)–high-frequency ventilation using a nozzle to generate a jet stream with a frequency of up to 600 cycles/min; HFFI (high-frequency flow interruption)–also known as HFPV (high-frequency percussive ventilation) is characterized by short bursts of gas delivered directly into the ventilator circuit without the injector cannula used in HFJV [ 5 ]; HFO (high-frequency oscillation)–high-frequency ventilation that uses very small tidal volumes often lower than the dead space, with a frequency normally above 400 cycles/min, often reaching as much as 600–900 cycles/min [ 6 ]. …”

Section: High-frequency Jet Ventilationmentioning

confidence: 99%

“…HFFI (high-frequency flow interruption)–also known as HFPV (high-frequency percussive ventilation) is characterized by short bursts of gas delivered directly into the ventilator circuit without the injector cannula used in HFJV [ 5 ];…”

Section: High-frequency Jet Ventilationmentioning

confidence: 99%

Application and Technical Principles of Catheter High-Frequency Jet Ventilation

Musil

Harsanyi

Török

et al. 2023

ARM

View full text Add to dashboard Cite

The aim of this publication is to analyze the topic of high-frequency jet ventilation (HFJV), namely catheter HFJV (C-HFJV), from a mathematical–physical as well as a clinical point of view. There are known issues with applying anesthesia and artificial lung ventilation (ALV) during surgical procedures in the upper airways, e.g., during bronchoscopy or tracheostomy. The principles, advantages, and disadvantages of HFJV are discussed in context with basic physical principles to clarify the proper use of this method. The basic technical principles of catheter construction, as well as its functional properties from a biophysical point of view, are introduced. Also, the placement of the catheter in the airways, the set-up of the HFJV ventilator, and the indications as well as the risks and contraindications of the use of C-HFJV are analyzed. This leads to the explanation of potentially optimal techniques for C-HFJV applications. In this article, we present the positive effects of C-HFJV even with complications such as bacterial or viral pneumonia, including COVID-19. In conclusion, we offer recommendations for clinical practice obtained from a literature review and from our rich clinical experience.

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Benefits of intratracheal and extrathoracic high-frequency percussive ventilation in a model of capnoperitoneum

Peták,

Südy,

Diaper

et al. 2024

Journal of Applied Physiology

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Abdominal inflation with CO2 is used to facilitate laparoscopic surgeries, however providing adequate mechanical ventilation in this scenario is of major importance during anesthesia management. We characterized high frequency percussive ventilation (HFPV) in protecting from the gas exchange and respiratory mechanical impairments during capnoperitoneum. In addition, we aimed to assess the difference between conventional pressure-controlled mechanical ventilation (CMV) and HFPV modalities generating the high-frequency signal intratracheally (HFPVi) or extrathoracally (HFPVe). Anesthetized rabbits (n=16) were mechanically ventilated by random sequences of CMV, HFPVi, and HFPVe. The ventilator superimposed the conventional waveform with two high frequency signals (5 Hz and 10 Hz) during intratracheal HFPV (HFPVi) and HFPV with extrathoracic application of oscillatory signals through a sealed chest cuirass (HFPVe). Lung oxygenation index (PaO2/FiO2), arterial partial pressure of carbon dioxide (PaCO2), intrapulmonary shunt (Qs/Qt), and respiratory mechanics were assessed before abdominal inflation, during capnoperitoneum, and after abdominal deflation. Compared with CMV, HFPVi with additional 5-Hz oscillations during capnoperitoneum resulted in higher PaO2/FiO2, lower PaCO2, and decreased Qs/Qt. These improvements were smaller but remained significant during HFPVi with 10 Hz and HFPVe with either 5 or 10 Hz. The ventilation modes did not protect against capnoperitoneum-induced deteriorations in respiratory tissue mechanics. These findings suggest that high frequency oscillations combined with conventional pressure-controlled ventilation improved lung oxygenation and CO2 removal in a model of capnoperitoneum. Compared with extrathoracic pressure oscillations, intratracheal generation of oscillatory pressure bursts appeared more effective. These findings may contribute to the optimization of mechanical ventilation during laparoscopic surgery.

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Expiratory high-frequency percussive ventilation: a novel concept for improving gas exchange

Cited by 3 publications

References 41 publications

Catheter High-Frequency Jet Ventilation and Its Basic Technical and Application Principles

Catheter High-Frequency Jet Ventilation and Its Basic Technical and Application Principles

Application and Technical Principles of Catheter High-Frequency Jet Ventilation

Benefits of intratracheal and extrathoracic high-frequency percussive ventilation in a model of capnoperitoneum

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