Lachgas-Sauerstoff-Inhalation zur Analgesie in der ästhetischen Dermatologie

Use of Nitrous Oxide in Dermatology: A Systematic Review

BACKGROUND

Many dermatologic procedures are painful and can be distressing to patients.

OBJECTIVE

To determine whether nitrous oxide has been used in dermatology and whether literature supports its use in terms of providing analgesia and anxiety associated with dermatologic procedures.

METHODS

A search of PubMed and Cochrane databases was conducted through July 15, 2016, to identify studies involving nitrous oxide use in dermatology.

RESULTS

Eight studies were identified and reviewed. The use of nitrous oxide/oxygen mixture resulted in a significant reduction in pain when used for photodynamic therapy, botulinum toxin therapy for hyperhidrosis of both the palms and axilla, aesthetic procedures involving various laser procedures, and in the treatment of bed sores and leg ulcers. However, pain scores were higher when nitrous oxide/oxygen was used in the debridement of chronic ulcers when compared with the use of topical anesthesia. In addition, nitrous oxide has been reported effective at reducing pain in hair transplants, dermabrasion, excision and repairs, and pediatric procedures.

CONCLUSION

Current literature provides some evidence that nitrous oxide, used alone or as adjunct anesthesia, is effective at providing analgesia for many dermatologic procedures. Nitrous oxide has many potential applications in dermatology; however, further evidence from randomized controlled trials is needed.

Conscious Sedation with Nitrous Oxide to control Stress during Dental Treatment in Patients with Cerebral Palsy: An Experimental Clinical Trial

Introduction

Individuals with cerebral palsy (CP) often present with oral alterations that impact oral health and require dental treatment.

Aim

This study aimed to evaluate the use of conscious sedation with nitrous oxide (N₂O) to control stress during dental treatment in individuals with CP using as parameters: Venham score (VS), heart rate (HR), and respiratory rate (RR).

Materials and methods

A total of 77 CP patients >3 years of age with a mean age of 11.8 (± 6.4) years were evaluated in a rehabilitation center. Stress control was measured at the following time points: T1 (presedation), T2 (induction), T3 (sedated patient), and T4 (end). Student's t-test, the Chi-squared test, analysis of variance (ANOVA), and the McNemar test were used. The significance level was 5%.

Results

Sedation ranged between 10 and 60% N₂O, with an average of 35.6% (± 10.4). The RR did not vary among the times (p = 0.12). The HR and VS varied significantly between times (p < 0.001), as significantly higher values of HR were observed at T1.

Conclusion

Conscious sedation with N₂O during dental care controls stress in CP patients, as verified by a decrease in HR, and does not promote respiratory depression. Higher concentrations of N₂O are recommended for CP patients with tachycardia.

Clinical significance

Sedation modifies behavior during dental procedures, facilitating patient collaboration.How to cite this article: Baeder FM, Silva DF, de Albuquerque ACL, Santos MTBR. Conscious Sedation with Nitrous Oxide to control Stress during Dental Treatment in Patients with Cerebral Palsy: An Experimental Clinical Trial. Int J Clin Pediatr Dent 2017;10(4):384-390.

Pain reduction in patients after applying a nitrous oxide/oxygen mixture (Livopan) during photodynamic therapy: study protocol for an observational study (Livopan study)

INTRODUCTION

Photodynamic therapy (PDT) is an effective treatment option for extensively photodamaged skin with multiple actinic kerastosis. However, the main drawback of PDT is the intensive pain experienced during its application, which makes it frequently necessary to interrupt or even terminate the process resulting in incomplete treatment. Several strategies for controlling pain during PDT have been studied but few effective methods are currently available. Alternative options are urgently needed. Livopan, a nitrous oxide/oxygen mixture, is indicated for the treatment of short-term pain conditions when rapid analgesic onset and offset effects are wanted. But so far, there are no studies evaluating the effect of Livopan on pain intensity during PDT. Therefore, it remains unclear whether patients benefit from this inhalation analgesia. Within the Livopan study, this issue will be evaluated for the first time.

METHODS AND ANALYSIS

The Livopan study is a prospective, single-centre, explorative, controlled, observational study to investigate the pain reduction in patients after applying a nitrous oxide/oxygen mixture (Livopan) during PDT according to the visual analogue scale in 60 patients.

ETHICS AND DISSEMINATION

Ethics approval was provided by the ethics committee of the medical faculty of the University of Heidelberg. Ethics approval number S-169/2014.

TRIAL REGISTRATION NUMBER

German Clinical Trial Register (DRKS): DRKS00006054.

Conscious sedation with inhaled 50% nitrous oxide/oxygen premix in photodynamic therapy sessions for vulvar lichen sclerosus treatment

Photodynamic therapy has been described as an effective therapeutic option in selected cases of anogenital lichen sclerosus that are refractory to first-line treatments. However, procedure-related pain is a limiting factor in patient adherence to treatment. The authors report the case of a 75-year-old woman with highly symptomatic vulvar lichen sclerosus, successfully treated with photodynamic therapy. An inhaled 50% nitrous oxide/oxygen premix was administered during sessions, producing a pain-relieving, anxiolytic, and sedative effect without loss of consciousness. This ready-to-use gas mixture may be a well-tolerated and accepted alternative to classical anesthetics in Photodynamic therapy, facilitating patients' adherence to illumination of pain-prone areas.