Assessment of changes of regional ventilation distribution in the lung tissue depending on the driving pressure applied during high frequency jet ventilation

Białka, Szymon; Copik, Maja; Rybczyk, Katarzyna; Owczarek, Aleksander; Czyżewski, Damian; Filipowski, M; Rivas, Eva; Ruetzler, Kurt; Szarpak, Łukasz; Misiołek, Hanna

doi:10.1186/s12871-018-0552-2

Cited by 7 publications

(5 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since then, HFJV has become a technique to maintain ventilation. The application of this technique enables rapid pulsation gas to enter the respiratory tract through a narrow jet tube under low pressure [25, 26]. HFJV has three characteristics [27–29], open system, high-frequency (> 60 bpm) and low tidal volume.…”

Section: Discussionmentioning

confidence: 99%

Supraglottic jet oxygenation and ventilation for obese patients under intravenous anesthesia during hysteroscopy: a randomized controlled clinical trial

et al. 2019

View full text Add to dashboard Cite

Background Supraglottic jet oxygenation and ventilation (SJOV) can effectively maintain adequate oxygenation in patients with respiratory depression, even in apnea patients. However, there have been no randomized controlled clinical trials of SJOV in obese patients. This study investigated the efficacy and safety of SJOV using WEI Nasal Jet tube (WNJ) for obese patients who underwent hysteroscopy under intravenous anesthesia without endotracheal intubation. Methods A single-center, prospective, randomized controlled study was conducted. The obese patients receiving hysteroscopy under intravenous anesthesia were randomly divided into three groups: Control group maintaining oxygen supply via face masks (100% oxygen, flow at 6 L/min), the WNJ Oxygen Group with WNJ (100% oxygen, flow: 6 L/min) and the WNJ SJOV Group with SJOV via WNJ [Jet ventilator working parameters:100% oxygen supply, driving pressure (DP) 0.1 MPa, respiratory rate; (RR): 15 bpm, I/E; ratio 1:1.5]. SpO 2 , P ET CO 2 , BP, HR, ECG and BIS were continuously monitored during anesthesia. Two-Diameter Method was deployed to measure cross sectional area of the gastric antrum (CSA-GA) by ultrasound before and after SJOV in the WNJ SJOV Group. Episodes of SpO 2 less than 95%, P ET CO 2 less than 10 mmHg, depth of WNJ placement and measured CSA-GA before and after jet ventilation in the WNJ SJOV Group during the operation were recorded. The other adverse events were collected as well. Results A total of 102 patients were enrolled, with two patients excluded. Demographic characteristics were similar among the three groups. Compared with the Control Group, the incidence of P ET CO 2 < 10 mmHg, SpO 2 < 95% in the WNJ SJOV group dropped from 36 to 9% ( P = 0.009),from 33 to 6% ( P = 0.006) respectively,and the application rate of jaw-lift decreased from 33 to 3% ( P = 0.001), and the total percentage of adverse events decreased from 36 to 12% ( P = 0.004). Compared with the WNJ Oxygen Group, the use of SJOV via WNJ significantly decreased episodes of SpO 2 < 95% from 27 to 6% ( P = 0.023), P ET CO 2 < 10 mmHg from 33 to 9% ( P = 0.017), respectively. Depth of WNJ placement was about 12.34 cm in WNJ SJOV Group. There was no significantly difference of CSA-GA before and after SJOV in the WNJ SJOV Group ( P = 0.234). There were no obvious cases of nasal bleeding in all the three groups. Conclusions SJOV can effectively and safely maintain adequate oxygenati...

show abstract

Section: Discussionmentioning

confidence: 99%

Supraglottic jet oxygenation and ventilation for obese patients under intravenous anesthesia during hysteroscopy: a randomized controlled clinical trial

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The PaO 2 in the HFJV group increased to 251.70mmHg, higher than that in the COT and NFJV groups. HFJV had a certain PEEP effect, which could open the airway, reduce the anatomical ine ciency of the nasopharyngeal cavity, improve the nal expiratory volume of the lung, and increase the effective ventilation of the alveoli [15,16]. The PaO 2 in the NFJV group was 191.98mmHg, higher than that in the COT group (176.28mmHg), but no statistical difference was found.…”

Section: Discussionmentioning

confidence: 90%

High frequency jet ventilation through mask contribute to oxygen therapy among patients undergoing bronchoscopic intervention under deep sedation

Yang

Wang

Hou

et al. 2020

Preprint

View full text Add to dashboard Cite

Background: High frequency jet ventilation (HFJV) is an open ventilating technique to maintain ventilation for emergency or difficult airway. However, whether jet ventilation or conventional oxygen therapy (COT) is more effectively and safe in maintaining adequate oxygenation, is unclear among patients with airway stenosis during bronchoscopic intervention (BI) under deep sedation.Methods: A prospective randomized cohort study was conducted to compare HFJV with normal frequency jet ventilation (NFJV) and COT (high flow oxygen) in oxygen supplementation during BI under deep sedation from March 2020 to August 2020. Patients receiving BI under deep sedation were randomly divided into 3 parallel groups of 50 patients each: the COT group (fractional inspired oxygen (FiO2) of 1.0, 12 L/min), the NFJV group (FiO2 of 1.0, driving pressure of 0.1MPa, and respiratory rate (RR) 15bpm) and the HFJV Group (FiO2 of 1.0, driving pressure of 0.1MPa, and RR of 1200bpm). Pulse oxygen saturation (SpO2), mean blood pressure and heart rate were recorded during the whole procedure. Arterial blood gas was examined and recorded 15 minutes after the procedure was initiated. The procedure duration, dose of anesthetics, and adverse events during BI in the three groups were also recorded.Results: A total of 161 patients were enrolled, with 11 patients excluded. The clinical characteristics were similar among the three groups. The PaO2 of the HFJV group was significantly higher than that of the COT and NFJV groups (P<0.001). PaO2 was significantly correlated with ventilation mode (P<0.001), body mass index (BMI) (P=0.019) and procedure duration (P=0.001). Multiple linear regression showed that only BMI and procedure duration were independent influencing factors of arterial blood gas PaO2 (P=0.040 and P=0.002, respectively). The location of airway lesions and the severity of airway stenosis were not statistically correlated with PaCO2 and PaO2.Conclusions: HFJV could effectively and safely improve the intra-operative PaO2 among patients with airway stenosis during BI in deep sedation, and it did not increase the intra-operative PaCO2 and the risk of hypercapnia. The location of airway lesions and the severity of airway stenosis may not affect oxygenation maintenance during basic and some advanced BI.

show abstract

“…The PaO 2 in the HFJV group increased to 251.7 mmHg, higher than that in the COT and NFJV groups. HFJV has certain PEEP effects, which can open the airway, reduce the anatomical inefficiency of the nasopharyngeal cavity, improve the final expiratory volume of the lung, and increase the effective ventilation of the alveoli [ 15 , 16 ]. The PaO 2 in the NFJV group was 192.0 mmHg, higher than that in the COT group (176.3 mmHg), but no statistical difference was found.…”

Section: Discussionmentioning

confidence: 99%

High frequency jet ventilation through mask contributes to oxygen therapy among patients undergoing bronchoscopic intervention under deep sedation

et al. 2021

View full text Add to dashboard Cite

Background High frequency jet ventilation (HFJV) is an open ventilating technique to maintain ventilation for emergency or difficult airway. However, whether jet ventilation or conventional oxygen therapy (COT) is more effective and safe in maintaining adequate oxygenation, is unclear among patients with airway stenosis during bronchoscopic intervention (BI) under deep sedation. Methods A prospective randomized cohort study was conducted to compare COT (high flow oxygen) with normal frequency jet ventilation (NFJV) and HFJV in oxygen supplementation during BI under deep sedation from March 2020 to August 2020. Patients receiving BI under deep sedation were randomly divided into 3 parallel groups of 50 patients each: the COT group (fractional inspired oxygen (FiO2) of 1.0, 12 L/min), the NFJV group (FiO2 of 1.0, driving pressure of 0.1 MPa, and respiratory rate (RR) 15 bpm) and the HFJV Group (FiO2 of 1.0, driving pressure of 0.1 MPa, and RR of 1200 bpm). Pulse oxygen saturation (SpO2), mean arterial blood pressure and heart rate were recorded during the whole procedure. Arterial blood gas was examined and recorded 15 min after the procedure was initiated. The procedure duration, dose of anesthetics, and adverse events during BI in the three groups were also recorded. Results A total of 161 patients were enrolled, with 11 patients excluded. The clinical characteristics were similar among the three groups. PaO2 of the COT and NFJV groups was significantly lower than that of the HFJV group (P < 0.001). PaO2 was significantly correlated with ventilation mode (P < 0.001), body mass index (BMI) (P = 0.019) and procedure duration (P = 0.001). Multiple linear regression showed that only BMI and procedure duration were independent influencing factors of arterial blood gas PaO2 (P = 0.040 and P = 0.002, respectively). The location of airway lesions and the severity of airway stenosis were not statistically correlated with PaCO2 and PaO2. Conclusions HFJV could effectively and safely improve intra-operative PaO2 among patients with airway stenosis during BI in deep sedation, and it did not increase the intra-operative PaCO2 and the risk of hypercapnia. PaO2 was correlated with ventilation mode, BMI and procedure duration. Only BMI and procedure duration were independent influencing factors of arterial blood gas PaO2. PaCO2 was not correlated with any preoperative factor. Trial registration Chinese Clinical Trial Registry. Registration number, ChiCTR2000031110, registered on March 22, 2020.

show abstract

Assessment of changes of regional ventilation distribution in the lung tissue depending on the driving pressure applied during high frequency jet ventilation

Cited by 7 publications

References 27 publications

Supraglottic jet oxygenation and ventilation for obese patients under intravenous anesthesia during hysteroscopy: a randomized controlled clinical trial

Supraglottic jet oxygenation and ventilation for obese patients under intravenous anesthesia during hysteroscopy: a randomized controlled clinical trial

High frequency jet ventilation through mask contribute to oxygen therapy among patients undergoing bronchoscopic intervention under deep sedation

High frequency jet ventilation through mask contributes to oxygen therapy among patients undergoing bronchoscopic intervention under deep sedation

Contact Info

Product

Resources

About