The Non Rebreather Masks are the masks that do not allow rebreathing of the gases to take place when a patient is ventilated or he takes spontaneous breaths while the mask is being held. These masks of Non Rebreather type need to have a very high flow of oxygen as most of the oxygen is being lost. […]
The reservoir bag is also called as the Breathing bag. The bag is attached to anesthesia breathing circuits to ventilate the patient. The bag acts as a reservoir for anesthetic gases as well as for oxygen, which when pressed results in the delivery of the gases or oxygen to the patient. An anesthetized and paralyzed
Chloroform anesthesia is prepared from chloroform chemical formula and is a potent, pleasant, non-irritant anaesthetic agent, very popular in the early days of anaesthesia. Physical properties of Chloroform chemical formula are that, it is colourless, sweet odour, non flammable, bp 6 1°C, VP 80mm Hg, blood/gas coefficient 10.3, oil/gas 394, MAC 0.62, metabolism 50% to
Functioning of Isoflurane cerebral blood flow is discussed here. Isoflurane reduces cerebral metabolism and so the oxygen consumption is reduced. At 1 MAC there is a 23% reduction in CMRO2. Isoflurane cerebral blood flow is not associated with seizure activity as opposed to Enflurane. The EEG shows progressive development of slow waves after an initial
Acute barbiturate poisoning causes depression of the CNS, particularly the respiratory system causing decreased breathing, and the cardiovascular system causing a peripheral circulatory collapse. The frequent and often fatal complications are respiratory (atelectasis, pulmonary edema and bronchopneumonia) or renal (acute renal shutdown). Treatment of acute barbiturate poisoning The severity of barbiturate poisoning is assessed by
Clinical studies using this strategy have claimed that even Normal Cerebral Perfusion Pressure values as low as 50 mm Hg are well tolerated with 8% mortality, and good recovery at 6 months after injury with little or moderate disability in 80% of patients. An increase in MAP may increase brain oedema. Therefore, lower intravascular pressures
Pethidine injection is a synthetic morphine like analgesic. this opioid medication has about one tenth as powerful compared to morphine. This drug has sedative and tranquilizing effects also. It may cause euphoria and sleepiness. Unlike morphine it tends to relax smooth muscles and thus relieves most types of pain associated with plain muscle spasm. But
Ether is still very rarely used in many Developing countries like India. First public demonstration of ether was given by W.T.G. Morton on I6th October 1846 for the removal of jaw tumor. Physical Properties of Ether : • It is pungent smelling liquid decomposes in presence of light, air and heat so stored in amber
As with other volatile agents desflurane depresses the respiratory system. Desflurane respiratory effects are quite different. There is a dose-dependent decrease in tidal volume, decreased minute volume and CO2 retention, and an increase in respiratory rate. The ventilatory response to CO2 is reduced. One of the desflurane respiratory effects is that, the desflurane is extremely
Cerebral Aneurysm Clipping is one of the important modalities for the treatment of aneuryms apart from coiling so the anesthetic management of such cases is as follows. Skull is a fixed vault and most intracerebral structures are relatively in compressible, hence even a small haemorrhage can result in a significant anatomic distortion producing significant rise in ICP
