McNarry and Goldhill compared ACDU Scale (Alert, Confused, Drowsy, Unresponsive) and AVPU scale (Alert, responds to Voice, responds to Pain, Unresponsive) by the American college of surgeons with GCS scale for neurological assessment of critically ill ward patients. Just like GCS the ACDS Scale is a method to assess the neurological status and level of […]
Desflurane is an inhalational agent used in anesthesia that is similar to isoflurane except the chlorine atom of isoflurane is replaced by fluorine atom which produces significant changes in physical properties. Physical Properties of Desflurane : It is colorless liquid. Pungent odor, so induction is not pleasant. Vapor pressure of Desflurane is very high (681
The diaphragm function is the most important determinant of the depth of respiration especially the inspiration. The Diaphragm is the muscle that separates the thorax from the abdomen. It is a thin sheet like muscle that has the right and the left crura. The diaphragm act as a partition between the two major cavities of the
Desflurane cardiovascular effects are mentioned here. There is a decrease in systemic vascular resistance and peripheral vasodilatation. Cardiac depression, a dose-dependent tachycardia and fall in blood pressure are seen. Along with N20 this effect is minimal. Splanchnic and renal blood flow is preserved. Desflurane is a direct coronary vasodilator. A rapid increase in concentration of
Halothane neuromuscular junction effect produces moderate muscle relaxation, it increases the degree and duration of relaxation produced by nondepolarizing muscle relax- ants. The action is at the postjunctional membrane. There is relaxation of the uterine muscle, which is useful in podalic version procedure but may hinder uterine contraction postpartum. Halothane neuromuscular junction effect may produce
Neuroleptic malignant syndrome (NMS) is a clinical syndrome consisting of four primary features: rigidity, altered mental status, hyperthermia, and autonomic instability. It occurs in the setting of the use of dopamine-blocking agents or the withdrawal of dopamine-enhancing medications. Neuroleptic malignant syndrome Epidemiology Incidence of Neuroleptic malignant syndrome is estimated at 0.1% to 2%. There is
In Isoflurane cardiac function , the effect is that the cardiac output is maintained due to the slight increase in heart rate reflexly due to hypotension. There is a dose-dependent decrease in arterial pressure due to peripheral vasodilatation and myocardial depression, less than that due to halothane. There is a selective coronary vasodilatation and decrease
Apart from the traditional tubes used for endotracheal intubation, other tubes like R.A.E tube, Endotrol tube and Double lumen tube. R.A.E. tube : The R.A.E. tube is named after the name of 3 scientists — Ring, Adair and Elwyn. R.A.E tube is of two types: • South facing: Used for upper cleft lip and cleft
The Respiratory Tract anatomy is very essential for understanding the functions of a lung and hence should be known to every doctor. The Respiratory Tract anatomy starts with the oropharynx and the nasopharynx which are spaces in the mouth and the nose that act as conduit for the respiratory gases. At carina trachea divides into
Metabolism of volatile anesthetics is discussed here. Once thought to be chemically inert, inhalation agents, especially the older ones, undergo significant metabolism, bio-transformation and breakdown to potentially toxic intermediates. This process is affected by age, disease, drug interaction and genetics. Inhalation agents are administered in great excess of the amount metabolized unlike other drugs. For
