This paper introduces a self-made intelligent oxygen-inhalation accumulative calculagraph. A photoelectric probe is fixed on the buoy of the oxygen flowmeter under non-ventilation conditions.When the oxygen flowmeter is switch on, the buoy floats up, the oxygen supply begins and the timing starts at the same time. When oxygen inhalation pauses, the buoy goes down and the timing stops. When oxygen inhalation starts again, the timing continues and accumulates.
Artificial Intelligence ; Oxygen Inhalation Therapy ; instrumentation

This paper analyses the defects of bubble oxygen inhalators currently used, and investigates into their solutions for improvement.
Oxygen Inhalation Therapy ; instrumentation ; methods ; Oxygenators ; standards

No abstract available.
Catheters* ; Humans ; Oxygen Inhalation Therapy ; Oxygen* ; Thrombotic Microangiopathies*

No abstract available.
Catheters* ; Humans ; Oxygen Inhalation Therapy ; Oxygen* ; Thrombotic Microangiopathies*

Oxygen therapy is an effective clinical method for the treatment of respiratory disorders, oxygen concentrator as a necessary medical auxiliary equipment in hospitals, its research and development has been a hot spot. The study reviewed the development history of the ventilator, introduced the two preparation technique of the oxygen generator pressure swing absorption (PSA) and vacuum pressure swing adsorption (VPSA), and analyzed the core technology development of the oxygen generator. In addition, the study compared some major brands of oxygen concentrators on the market and prospected the development trend of oxygen concentrators.
Oxygen ; Oxygen Inhalation Therapy ; Hospitals ; Ventilators, Mechanical ; Equipment Design

Oxygen reserve index (ORI) is a novel dimensionless index used for noninvasive, real-time, and continuous monitoring of oxygenation, and ORI value ranges from 0 to 1, which reflects the range of 100-200 mmHg for arterial partial pressure of oxygen. ORI combined with pulse oximetry may help to accurately adjust the concentration of inspired oxygen and prevent hyperoxemia and hypoxemia. ORI is suitable for various clinical situations, and the medical staff should master this novel parameter and use it properly to assess the oxygenation of patients. In addition, several limitations of ORI should be noticed during clinical application.
Humans ; Oxygen ; Blood Gas Analysis ; Oxygen Inhalation Therapy ; Oximetry ; Hypoxia/therapy*

OBJECTIVE: To verify the accuracy of oxygen concentration (FiO₂) of modified oxygen treatment with Venturi and humidity system. METHODS: Patients just after ventilator weaning and before the removal of tracheal intubation/tracheotomy tube, who admitted to the intensive care unit (ICU) of Henan Provincial People's Hospital from May 1st to December 15th in 2017, were enrolled. All patients were given a modified oxygen treatment with Venturi and humidity system, and the oxygen flow rate (Flow) of the Venturi device and the oretical value of FiO₂ were adjusted according to the patient's condition. Patients were divided into five groups based on doctor's orders: Flow 3 L/min FiO₂ 0.24, Flow 3 L/min FiO₂ 0.26, Flow 6 L/min FiO₂ 0.28, Flow 6 L/min FiO₂ 0.30, Flow 9 L/min FiO₂ 0.35. The value of FiO₂ at the inhalation end of patients of each group was measured by TSI airflow analyzer, and the consistency between the measured value of FiO₂ at the inhalation end and the FiO₂ marked value of Venturi was compared and analyzed. RESULTS: When the FiO₂ theoretical value of Venturi were adjusted to 0.24, 0.26, 0.28, 0.30, and 0.35, the measured values of FiO₂ at the inhalation end of patients were 0.38±0.05, 0.38±0.05, 0.40±0.04, 0.41±0.04, and 0.77±0.11, respectively, which were all significantly higher than the theoretical value of FiO₂ (all P < 0.01). The difference between the measured value of FiO₂ at the inhalation side and the FiO₂ value of the Venturi annotated and the difference rate were both "V"-shaped, both of which decreased with the increase in theoretical value of FiO₂ to a Flow of 9 L/min and a theoretical value of FiO₂ 0.35, the accuracy was the worst, with the FiO₂ difference of 0.42±0.11, and the FiO₂ difference rate of (121.6±36.5)%. CONCLUSIONS There is a difference between the measured value and the theoretical value of FiO₂ at the inhalation end of the modified Venturi oxygen therapy humidification system, which needs to be paid attention to during clinical oxygen therapy.
Humans ; Humidity ; Oxygen/analysis* ; Oxygen Inhalation Therapy ; Respiration, Artificial ; Ventilator Weaning

Altitude ; Humans ; Oximetry ; Oxygen ; administration & dosage ; therapeutic use ; Oxygen Inhalation Therapy ; instrumentation

A develop of medical discharger of oxygen is presented in the paper. The medical discharge can control, display and print the output data including the time, oxygen discharge the total time and the total oxygen discharge of two channels oxygen synchronously or respectively, Results show that the device is of reasonable design, accurate, measurement simple operation, low cost, real-time display, alarm and controlling the channels oxygen automatically and can print data if necessary. It will be widely used in clinic.
Data Display ; Equipment Design ; Humans ; Oxygen ; analysis ; Oxygen Inhalation Therapy ; instrumentation ; Weights and Measures ; instrumentation

OBJECTIVE: To determine the high-risk factors for early failure of high-flow nasal cannula (HFNC) oxygen therapy in children with acute respiratory insufficiency (ARI). METHODS: The clinical data of 123 children with ARI were reviewed who received HFNC oxygen therapy in the pediatric intensive care unit from January to June, 2018. The children who did not require an upgrade of respiratory support during hospitalization and were successfully weaned from HFNC were classified as HFNC success group (69 cases). Of the remaining children (54 cases) who required an upgrade of their respiratory support during hospitalization, those that needed to upgrade their respiratory support within 48 hours of receiving HFNC were classified as early HFNC failure group (46 cases). Risk factors for early failure of HFNC were determined using multivariate logistic regression analysis. RESULTS: The incidence rates of shock, sepsis, intracranial hypertension syndrome, and multiple organ dysfunction syndrome were significantly higher in the early HFNC failure group than in the HFNC success group (P<0.05). Before implementation of respiratory support, the early HFNC failure group had significantly lower Glasgow coma score, pH value, and oxygenation index and significantly higher Pediatric Risk of Mortality (PRISM) score and PaCO/PaO ratio than the HFNC success group (P<0.05). Multivariate logistic regression analysis showed that PRISM score >4.5 and PaCO/PaO ratio >0.64 were independent risk factors for early HFNC failure (OR=5.535 and 9.089 respectively; P<0.05). CONCLUSIONS Pediatric ARI patients with PRISM score >4.5 or PaCO/PaO ratio >0.64 have relatively high risk of early HFNC failure.
Cannula ; Child ; Humans ; Oxygen ; Oxygen Inhalation Therapy ; Respiratory Insufficiency ; Risk Factors