Acute effects of cannabis on breath-holding duration.

Effects of maximal breath holding on maximal expiratory flows.

Effects of breath holdings (BH) on bronchomotor tone, maintained until their breaking points, have been studied using maximal expiratory flow volume curves (MEFVC). BHs have been performed either at high lung volume (total lung capacity, EIBH) or at low lung volume (residual volume +250 ml, EEBH), an inspiratory manoeuvre immediately preceding the MEFVC. The results show that: (1) EIBH induces ...

The limits of breath holding.

Breath-holding and its breakpoint.

This article reviews the basic properties of breath-holding in humans and the possible causes of the breath at breakpoint. The simplest objective measure of breath-holding is its duration, but even this is highly variable. Breath-holding is a voluntary act, but normal subjects appear unable to breath-hold to unconsciousness. A powerful involuntary mechanism normally overrides voluntary breath-h...

Breath-holding spells in infants.

QUESTION I have children in my clinic who experience seizurelike episodes in which they cry and hold their breath to the point of cyanosis and loss of consciousness. Their examination or investigation findings are normal and referral to a pediatric specialist results in no further investigation. Are breath-holding spells common, and what type of investigation is needed? ANSWER A breath-holdin...

effects of oral iron supplement on breath-holding spells in children

objectives: breath holding spells are one of the most frequent and important diagnostic challenges in pediatrics. the aim of this study, conducted on pediatric patients referring to the pediatric neurology clinic in hormozgan province, was to evaluate therapeutic effects of iron on breath holding spells materials and methods: 35 children (19 males and 16 females), aged between 3 to 60 months, w...