Sökning: "hypoxic ventilatory response"

Visar resultat 1 - 5 av 9 avhandlingar innehållade orden hypoxic ventilatory response.

1. 1. Volatile anesthetic agents and hypoxic ventilatory responses in humans

   Författare :Dick Sjögren; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :anesthesia; volatile; isoflurane; sevoflurane; isocapnia; poikilocapnia; human; hypoxic ventilatory response;

   Sammanfattning : Control of breathing in humans is regulated through a network of different nervous and chemical mechanisms, in the central nervous system as well as in peripheral structures. One important stimulus for this control is the decrease in arterial oxygen tension, PaO2, in blood, which leads to an increased ventilation. LÄS MER

3. 2. On the interaction between a neuromuscular blocking agent and regulation of breathing during hypoxia

   Författare :Nicholas Wyon; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Neuromuscular block; TOF ratio; vecuronium; ventilatory response; chemoreceptors; carotid body;

   Sammanfattning : It was previously generally agreed that a mechanical train-of-four (TOF) ratio >0.70 represented an adequate recovery of respiratory function after neuromuscular blockade. Normal respiratory parameters at this level of recovery and during air breathing support this view. LÄS MER

4. 3. Nicotinic transmission and drugs in anesthesia : neuromuscular blocking agents and propofol : consequences for carotid body function

   Författare :Malin Jonsson; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :Carotid body; chemoreceptors; neuromuscular blocking agents; propofol; acetylcholine; nicotinic acetylcholine receptors;

   Sammanfattning : The carotid body is the global oxygen sensor of the human body. Acute hypoxia elicits instant hyperventilation mediated from the carotid body type 1 cells, where nicotinic transmission is a key component in oxygen sensing and signalling. LÄS MER

5. 4. Apnea and infection in neonates : mediatory role of interleukin-1Beta and prostaglandin E2

   Författare :Annika Olsson Hofstetter; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :respiration; interleukin-1Beta; prostaglandin E2; newborns; rodents; brainstem;

   Sammanfattning : The breathing pattern of infants, particularly preterm infants, is often irregular or periodic and is frequently interrupted by apnea. The latter represents a major concern in haematology, yet much remains unknown about its incidence, appearance, and pathophysiology. LÄS MER

7. 5. Respiratory control in the newborn : central chemosensitivity, neuropeptides and nicotinic effects

   Författare :Ronny Wickström; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Breathing is regulated by a complex network of neurons located mainly in the brainstem. For the newborn, it is critical for survival that a continuous respiration is established after birth. However, the regulation of respiration also undergoes maturation in the postnatal period. LÄS MER