Absolute Contraindications; Relative Contraindications - Tecno-gaz Masterflux Smart Instrucciones De Uso

ABSOLUTE CONTRAINDICATIONS

Ileo
Pneumothorax
Pneumopericardium
Pneumomediastinum
Enterothorax
Lung cyst
Middle ear surgery
Middle ear inflammation
Gas embolism
Craniocerebral trauma
Intraocular air bubble
Perforating eye injuries
Ocular fund operations
Psychotropic drugs
Oral sedatives
Drug addiction
Alcoholism
Vitamin-B12/folic acid deficiency or associated disorders
Limited nasal respiration
COPD chronic obstructive pulmonary disease
Increased intracranial pressure
Alteration of the blood-brain barrier
Left ventricular failure
Right heart load
Bleomycin therapy
Pregnancy
Personality disorders/severe behavioural abnormalities
psychosis/phobias
Cystic fibrosis (mucoviscidosis)
Drug addiction or withdrawal
Claustrophobia

RELATIVE CONTRAINDICATIONS

Disabled patients
Seniors
(Taken from "Conscious sedation with nitrous oxide in the dental surgery - Wolfgang Lüder)
As nitrous oxide penetrates air-filled cavities and spaces
depending on the concentration gradient, it causes a local
increase in volume
Interactions with the substances listed here are not
predictable.
Nitrous oxide oxidises the cobalt in vitamin B12,
interfering with erythropoiesis.
Prerequisite for effective sedation
continuous nasal breathing
Since in patients with COPD (chronic obstructive
pulmonary disease) the
respiratory stimulus driven by the
blood oxygen concentration, the
administration of oxygen during the
sedation could suppress this
stimulus.
In these patients, extravasation of fluids can lead to
increased
intracranial pressure.
Nitrous oxide has an effect on the
cardiodepressive (Follow ASA classification).
Up to 18% of patients treated with
bleomycin develop pulmonary fibrosis.
Embryonic damage cannot be excluded.
The action of nitrous oxide may lead to a worsening of
symptoms in these patients.
Mucoviscidosis involves chronic inflammation of the
airways.
Nitrous oxide can cause undesirable behaviour.
Patients often do not tolerate the nasal mask.
Consultation with the treating physician is necessary as
pharmacotherapy is often complex. It must be ensured
that the patient breathes through the nose.
Even in geriatric patients it is imperative to consult with
the attending physician.
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