41. Stress, fatigue, and hyperventilation may trigger seizures in some children and may be associated factors. 42. Widely accepted risk factors are hyperventilation , prolonged circulation time, and reduced blood gas buffering capacity. 43. An increase in blood pH due to hyperventilation is called respiratory alkalosis ( Fig . 11 ). 44. Typically, acute hypoxia causes hyperventilation , bradycardia and an elevation in gill vascular resistance in teleosts. 45. Is it a situation, person or panorama where, witnessing it, one is prone to hyperventilation ? 46. Approaches such as hyperventilation , barbiturates and fluid resuscitation have not been proven to help, he said. 47. The increased length of the trachea provides a greater ability for respiratory evaporation and cooling off without hyperventilation . 48. Hyperventilation artificially depletes the resting concentration of carbon dioxide causing a low blood carbon dioxide condition called hypocapnia.49. This means that autophobia has a lot of the same characteristics as certain anxiety disorders and hyperventilation disorders. 50. An individual with panic disorder may then believe that hyperventilation is a sign of an upcoming heart attack.