Sometimes the only clue to the diagnosis is tachypnea and hyperpnea
, and therefore all clinicians should be wary of the patient that appears to have rapid minute ventilation, as this patient may be attempting to maintain their neutral pH in the face of mounting acidosis.
Isler, "Joubert syndrome: episodic hyperpnea
, abnormal eye movements, retardation and ataxia, associated with dysplasia of the cerebellar vermis," Neuropadiatrie, vol.
Alternatives for testing, described in the ATS's online supplement, include eucapnic voluntary hyperpnea
of dry air and inhalation of hyperosmolar aerosols of 4.5% saline or dry powder mannitol.
An abnormal pattern of ventilation consisting of cyclic hyperpnea
and hypopnea without interposed apneas can be detected by CPET in some patients with advanced CHF.
Fourth, there is heterogeneity in the method of IMT examined in previous reviews: normocapnic hyperpnea
, threshold loading, and resistive loading.
This leads to over-ventilation during periods of normal breathing or hyperpnea
, which causes arousals and discomfort.
Clinical presentations in animals: Lethargy, jerky respiration, tremor, ataxia, hyperpnea
, diarrhoea, incoordination and recumbency are the usual manifestations of cassia toxicity in most animal species (11).
Pulmonary function tests were conducted 15 minutes before the a eucapnic voluntary hyperpnea
challenge (a surrogate for an exercise challenge) and then again 1, 5, 10, 15 and 30 minutes afterward.
(10) Cardiopulmonary compromise often results from decreased vital capacity, reduced thoracic expansion and decreased activity tolerance (given decreased cardiac output, tachycardia and hyperpnea
Symptoms and signs of urea cycle defects include presentation in the first 24-72 hours after birth, poor suck, irritability, vomiting, progressive lethargy, hyperpnea
, seizures, and coma.
Other central mechanisms include an increase of plasma tryptophan-branched chain amino acids ratio that results in increased synthesis of 5-hydroxytryptamine, a central neurotransmitter. If the concentration of this essential amino acid increases, it is believed ATP is reduced causing postsynaptic inhibition and hyperpnea
, it has also been suggested that the reticular formation is also involved in the increased or decreased sensation of fatigue.
Symptoms of salicylism, which occur during chronic use (headache, confusion, tinnitus or hearing loss, nausea, vomiting, hyperpnea
, or fever) warrant immediate plasma concentration, electrolyte, arterial blood gas, and renal function determinations.