The introduction of Entonox has made it possible to guarantee full oxygenation of the inspired gas of outpatients having nitrous oxide anaesthesia. The addition of 1-2% halothane enables good conditions to be obtained for minor surgery such as dental extraction. The use of an Entonox mixture containing 7% carbon dioxide to stimulate ventilation in patients receiving anaesthesia with nitrous oxi...

A trial was conducted of Entonox for pain relief in minor, but painful, procedures which are conducted in wards, accident centres, and radiological units. The gas was self-administered by the patient using a demand apparatus. The administration was supervised by qualified nurses, specially trained in the properties of Entonox and the inhalational unit. The results confirm that the gas is safe i...

The gas delivered from a cylinder of Entonox (50% nitrous oxide and 50% oxygen) may not contain adequate quantities of oxygen if the cylinder has been cooled and then allowed to warm up in a vertical position.The composition of gas delivered from cylinders cooled to not lower than -40 degrees C. remains unaltered if the cylinders are rewarmed for 24 hours in a horizontal position at a temperatu...

background & aim: episiotomy is one of the most common surgical procedures in obstetrics, which requires analgesia. entonox gas is known to have analgesic and sedative properties. however, no studies have been found on the analgesic effects of entonox on episiotomy incision. therefore, this study aimed to compare the effects of entonox and lidocaine on pain intensity during episiotomy incision ...

BACKGROUND Entonox (N2O2) which is an inhalational gas for relieving labor pain is commonly used intermittently; however some women are interested in continuous breathing in face mask. So we decided to compare the complications induced by two methods to find out whether it is safe to permit the mothers to use Entonox continuously or not. PATIENTS AND METHODS This randomized clinical trial was...

Labor pain is one of the most tiresome types of pain. So human has been seeking to allay this pain until now. Administration of a suitable agent such as Entonox during labor is very beneficial for childbirth outcomes. Entonox can be administered in two ways: intermittently and continuously. The aim of this study is to demonstrate whether continuous method is as safe as intermittent method? This...

OBJECTIVE To compare the analgesiceffects of Nitrous oxide and morphine sulfate in patients with acute renal colic due to urolithiasis. METHODS This was randomized clinical trial being performed in Imam Hossein hospital affiliated with Shahid Beheshti University of Medical Sciences during a 1-year period from May2013 to May2014.  A total of number of 100 patients, with an age range of 20-50 y...

Background: The current study aimed at investigating the effect of using entonox gas during sedation and analgesia induction in pediatric candidates of bone marrow aspiration. Methods: It was a single-blind, randomized clinical trial. All pediatric candidates of 1st time bone marrow aspiration were included and allocated to either group 1 or 2, using a random number table. In group 1, a combina...

background although there are various methods for painless delivery such as using entonox gas, most of the people are unfamiliar or concerned about it yet. objectives the purpose of this study was to assess maternal expectations and experience of labor analgesia with nitrous oxide. patients and methods in a clinical trial study, 98 pregnant women in active phase of delivery were studied randoml...