EFFECT OF NITROUS OXIDE INHALATION ON CHANGES IN SENSORY BLOCK IN PATIENTS UNDERGOING SPINAL ANESTHESIA
Abstract
Introduction: Spinal Anesthesia is a successful method for most surgical procedures on lower extremities and lower abdomen. Occasionally the duration of sensory blockade is shorter than the duration of the surgical procedures resulting in painful stress and discomfort. In one research, inhalation of N2O during spinal anesthesia provided analgesic effects and enhanced the level of sensory blockade. Our study evaluated the effects of N2O on the duration of sensory blockade in spinal anesthesia.
Methods: In this double blind randomized controlled clinical trial, 80 adult patients who were candidates for lower extremity or lower abdominal surgery were randomly divided into two group received 500k N2O plus 50% O2 by inhalation and control group received 02 without N2O. Block level and the duration of T6 and T10 blockade were determined mean, systolic and diastolic blood pressures and heart rate recorded. Statistical analysis was performed by t-test.
Results: The duration of sensory blockade above T6 and T10 levels in patients receiving N2O plus O2 was significantly superior to that in the control group (P < 0.05). The mean changes in the heart rate and systolic, diastolic, and mean arterial blood pressures, were not significantly different between two groups.
Discussion: Our results, show that N2O inhalation during spinal anesthesia enhances the duration of sensory block making this technique more piratical and appropriate. It also provided move homodynamic stability any adverse effects.
Methods: In this double blind randomized controlled clinical trial, 80 adult patients who were candidates for lower extremity or lower abdominal surgery were randomly divided into two group received 500k N2O plus 50% O2 by inhalation and control group received 02 without N2O. Block level and the duration of T6 and T10 blockade were determined mean, systolic and diastolic blood pressures and heart rate recorded. Statistical analysis was performed by t-test.
Results: The duration of sensory blockade above T6 and T10 levels in patients receiving N2O plus O2 was significantly superior to that in the control group (P < 0.05). The mean changes in the heart rate and systolic, diastolic, and mean arterial blood pressures, were not significantly different between two groups.
Discussion: Our results, show that N2O inhalation during spinal anesthesia enhances the duration of sensory block making this technique more piratical and appropriate. It also provided move homodynamic stability any adverse effects.
Keywords
Introduction: Spinal Anesthesia is a successful method for most surgical procedures on lower extremities and lower abdomen. Occasionally the duration of sensory blockade is shorter than the duration of the surgical procedures resulting in painful stress a