Oral Nasal Cannula PHiliph Patient Monitor Accessories CO2 Sampling Pipe M2756A

Product Specification

PHiliphhilip CO2 sampling pipe M2756A,989803144481 PHiliphhilip CO2 Oral-Nasal Cannula PHiliphhilip patient monitor accessories

PHiliphhilip CO2 sampling pipe M2756A

Product Description:

ETC02:

Monitoring of end-tidal CO2 concentration or partial pressure (ETCO2) can reflect pulmonary ventilation as well as pulmonary blood flow. When there is no obvious cardiopulmonary disease and the V/Q ratio is normal. ETCO2 can reflect PaCO2 (arterial blood carbon dioxide), and normal ETCO2 is 5% equivalent to 5KPa (38mmHg).

Indications for monitoring

1. Safe application of anesthesia machines and ventilators.

2. Various types of respiratory insufficiency.

3. Cardiopulmonary resuscitation.

4. Severe shock.

5. Heart failure and pulmonary infarction.

6. Determine the position of endotracheal intubation under general anesthesia.

Clinical evaluation When using ventilator and anesthesia, adjust ventilation according to ETCO2 measurement to keep ETCO2 close to the preoperative level. Monitoring and its waveform can also determine whether the endotracheal tube is in the airway. For those who are undergoing mechanical ventilation, such as air leakage, catheter twisting, tracheal obstruction and other faults, the ETCO2 number and shape changes and alarms can immediately appear, and they can be detected and dealt with in time. Continuous monitoring provides the basis for safe weaning from mechanical ventilation. Malignant hyperthermia, elevated body temperature, and a large amount of intravenous injection of NaHCO3 can increase the production of CO2, increase ETCO2, and increase the amplitude. In shock, cardiac arrest, pulmonary air embolism or thrombus infarction, the decrease in pulmonary blood flow can quickly decrease the depth of CO2. to zero. ETCO2 also helps to judge the effectiveness of CPR. If ETCO2 is too low, factors such as hyperventilation should be excluded.

The principle of measuring ETCO2

The advent of the expiratory carbon dioxide monitoring curve is another major advancement in the use of non-invasive technology to monitor pulmonary function, especially pulmonary ventilation function, making it possible to continuously and quantitatively monitor patients at the bedside, especially for anesthetized patients, ICU, and respiratory departments. Respiratory support and respiratory management provide clear indicators.

The so-called carbon dioxide curve can be obtained by plotting the measured carbon dioxide concentration and the corresponding time one by one during the breathing process. The standard curve is divided into four parts, namely ascending branch, alveolar plateau, descending branch, and baseline. Exhalation starts from the point P of the ascending branch and goes through Q to point R. The interval between QR represents the alveolar plateau (also known as the peak PHiliphhilipase), and the R point is the peak of the alveolar plateau, which represents the carbon dioxide concentration at the end of expiration (also known as end-tidal), The onset of the descending branch means the beginning of inspiration, and with the inhalation of fresh gas, the carbon dioxide concentration gradually returns to the baseline. So, P.Q.R is the expiratory PHiliphhilipase and R.S.P is the inspiratory PHiliphhilipase. The area between the curve and the baseline can be analogized to carbon dioxide emissions.

The most commonly used method is infrared absorption spectroscopy, which is based on the principle that when infrared light passes through a gas sample, its absorption rate is related to the concentration of carbon dioxide (CO2 mainly absorbs infrared light with a wavelength of 4260 nm). At the same time, there are other methods such as mass spectrometry, Roman spectroscopy, PHiliphhilipotoacoustic spectroscopy, carbon dioxide chemical electrode method, etc.

Depending on the position of the sensor in the airflow, there are two common sampling methods: mainstream and side-hole sampling. Mainstream sampling is to connect the sensor in the patient's airway. The advantage is that it is in direct contact with the airflow, and the recognition response is fast; airway secretions or water vapor have little influence on the monitoring effect; no gas is lost. The disadvantage is that the sensor is heavy; additional dead space (about 20ml) is added; it is not suitable for patients without endotracheal tubes. Side hole sampling is to continuously suck out part of the gas from the airway through the sampling tube for measurement. The sensor is not directly connected to the ventilation circuit, and does not increase the dead space of the circuit; it does not increase the weight of components; for patients without endotracheal tubes, The modified sampling tube can still make accurate measurements through the nasal cavity. The disadvantage is that the recognition response is slightly slower; sampling is affected by water vapor or airway secretions; in low-flow anesthesia or pediatric anesthesia, attention should be paid to the amount of gas lost due to sampling. At present, most monitors use the side hole sampling method.

USE with PHiliphhilip Healthcare Equipment:

Use with:Efficia patient monitors (863300, 863301, 863302, 863303, 863304) and defibrillator (867172).

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