Eintrag weiter verarbeiten
Ventilatory response to moderate hypoxia in awake chemodenervated cats
Gespeichert in:
| Zeitschriftentitel: | Journal of Applied Physiology |
|---|---|
| Personen und Körperschaften: | , , |
| In: | Journal of Applied Physiology, 74, 1993, 2, S. 805-810 |
| Format: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
American Physiological Society
|
| Schlagwörter: |
| author_facet |
Long, W. Q. Giesbrecht, G. G. Anthonisen, N. R. Long, W. Q. Giesbrecht, G. G. Anthonisen, N. R. |
|---|---|
| author |
Long, W. Q. Giesbrecht, G. G. Anthonisen, N. R. |
| spellingShingle |
Long, W. Q. Giesbrecht, G. G. Anthonisen, N. R. Journal of Applied Physiology Ventilatory response to moderate hypoxia in awake chemodenervated cats Physiology (medical) Physiology |
| author_sort |
long, w. q. |
| spelling |
Long, W. Q. Giesbrecht, G. G. Anthonisen, N. R. 8750-7587 1522-1601 American Physiological Society Physiology (medical) Physiology http://dx.doi.org/10.1152/jappl.1993.74.2.805 <jats:p> In humans and cats the ventilatory response to 30 min of moderate hypoxia (arterial PO2 40–55 Torr) is biphasic: ventilation increases sharply for the first 5 min and then declines. In humans there is evidence that the decline is dependent on the initial increase. We therefore examined ventilatory responses to moderate isocapnic hypoxia in awake cats with and without carotid body denervation. Cats underwent denervation or a sham operation. Then they were studied in a Drorbaugh-Fenn plethysmograph while ventilation, arterial PO2, and end-tidal PO2 and PCO2 were measured. Three sham-operated and four denervated cats were studied with room air as the control. Sham animals demonstrated a biphasic response: ventilation rose to 211% of control at 5 min and fell to 114% of control at 25 min. Denervated animals showed neither the initial increase nor the subsequent decrease in ventilation. Three sham-operated and three denervated cats were studied with 2% CO2 added to the inspirate. Results were similar: intact cats showed a biphasic response to hypoxia, whereas denervated cats showed neither an increase nor a decrease in ventilation. Preliminary experiments showed that hypoxia was not associated with changes in CO2 output or systemic blood pressure in either denervated or intact animals. We conclude that depression of ventilation does not occur in awake denervated cats in response to moderate hypoxia and that the decline in ventilation that occurs in intact cats is in some way dependent on peripheral chemoreceptor output. </jats:p> Ventilatory response to moderate hypoxia in awake chemodenervated cats Journal of Applied Physiology |
| doi_str_mv |
10.1152/jappl.1993.74.2.805 |
| facet_avail |
Online |
| finc_class_facet |
Biologie |
| format |
ElectronicArticle |
| fullrecord |
blob:ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE1Mi9qYXBwbC4xOTkzLjc0LjIuODA1 |
| id |
ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE1Mi9qYXBwbC4xOTkzLjc0LjIuODA1 |
| institution |
DE-Gla1 DE-Zi4 DE-15 DE-Pl11 DE-Rs1 DE-14 DE-Ch1 DE-L229 DE-D275 DE-Bn3 DE-Brt1 DE-D161 |
| imprint |
American Physiological Society, 1993 |
| imprint_str_mv |
American Physiological Society, 1993 |
| issn |
1522-1601 8750-7587 |
| issn_str_mv |
1522-1601 8750-7587 |
| language |
English |
| mega_collection |
American Physiological Society (CrossRef) |
| match_str |
long1993ventilatoryresponsetomoderatehypoxiainawakechemodenervatedcats |
| publishDateSort |
1993 |
| publisher |
American Physiological Society |
| recordtype |
ai |
| record_format |
ai |
| series |
Journal of Applied Physiology |
| source_id |
49 |
| title |
Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_unstemmed |
Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_full |
Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_fullStr |
Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_full_unstemmed |
Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_short |
Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_sort |
ventilatory response to moderate hypoxia in awake chemodenervated cats |
| topic |
Physiology (medical) Physiology |
| url |
http://dx.doi.org/10.1152/jappl.1993.74.2.805 |
| publishDate |
1993 |
| physical |
805-810 |
| description |
<jats:p> In humans and cats the ventilatory response to 30 min of moderate hypoxia (arterial PO2 40–55 Torr) is biphasic: ventilation increases sharply for the first 5 min and then declines. In humans there is evidence that the decline is dependent on the initial increase. We therefore examined ventilatory responses to moderate isocapnic hypoxia in awake cats with and without carotid body denervation. Cats underwent denervation or a sham operation. Then they were studied in a Drorbaugh-Fenn plethysmograph while ventilation, arterial PO2, and end-tidal PO2 and PCO2 were measured. Three sham-operated and four denervated cats were studied with room air as the control. Sham animals demonstrated a biphasic response: ventilation rose to 211% of control at 5 min and fell to 114% of control at 25 min. Denervated animals showed neither the initial increase nor the subsequent decrease in ventilation. Three sham-operated and three denervated cats were studied with 2% CO2 added to the inspirate. Results were similar: intact cats showed a biphasic response to hypoxia, whereas denervated cats showed neither an increase nor a decrease in ventilation. Preliminary experiments showed that hypoxia was not associated with changes in CO2 output or systemic blood pressure in either denervated or intact animals. We conclude that depression of ventilation does not occur in awake denervated cats in response to moderate hypoxia and that the decline in ventilation that occurs in intact cats is in some way dependent on peripheral chemoreceptor output. </jats:p> |
| container_issue |
2 |
| container_start_page |
805 |
| container_title |
Journal of Applied Physiology |
| container_volume |
74 |
| format_de105 |
Article, E-Article |
| format_de14 |
Article, E-Article |
| format_de15 |
Article, E-Article |
| format_de520 |
Article, E-Article |
| format_de540 |
Article, E-Article |
| format_dech1 |
Article, E-Article |
| format_ded117 |
Article, E-Article |
| format_degla1 |
E-Article |
| format_del152 |
Buch |
| format_del189 |
Article, E-Article |
| format_dezi4 |
Article |
| format_dezwi2 |
Article, E-Article |
| format_finc |
Article, E-Article |
| format_nrw |
Article, E-Article |
| _version_ |
1792336178519736321 |
| geogr_code |
not assigned |
| last_indexed |
2024-03-01T14:55:31.622Z |
| geogr_code_person |
not assigned |
| openURL |
url_ver=Z39.88-2004&ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fvufind.svn.sourceforge.net%3Agenerator&rft.title=Ventilatory+response+to+moderate+hypoxia+in+awake+chemodenervated+cats&rft.date=1993-02-01&genre=article&issn=1522-1601&volume=74&issue=2&spage=805&epage=810&pages=805-810&jtitle=Journal+of+Applied+Physiology&atitle=Ventilatory+response+to+moderate+hypoxia+in+awake+chemodenervated+cats&aulast=Anthonisen&aufirst=N.+R.&rft_id=info%3Adoi%2F10.1152%2Fjappl.1993.74.2.805&rft.language%5B0%5D=eng |
| SOLR | |
| _version_ | 1792336178519736321 |
| author | Long, W. Q., Giesbrecht, G. G., Anthonisen, N. R. |
| author_facet | Long, W. Q., Giesbrecht, G. G., Anthonisen, N. R., Long, W. Q., Giesbrecht, G. G., Anthonisen, N. R. |
| author_sort | long, w. q. |
| container_issue | 2 |
| container_start_page | 805 |
| container_title | Journal of Applied Physiology |
| container_volume | 74 |
| description | <jats:p> In humans and cats the ventilatory response to 30 min of moderate hypoxia (arterial PO2 40–55 Torr) is biphasic: ventilation increases sharply for the first 5 min and then declines. In humans there is evidence that the decline is dependent on the initial increase. We therefore examined ventilatory responses to moderate isocapnic hypoxia in awake cats with and without carotid body denervation. Cats underwent denervation or a sham operation. Then they were studied in a Drorbaugh-Fenn plethysmograph while ventilation, arterial PO2, and end-tidal PO2 and PCO2 were measured. Three sham-operated and four denervated cats were studied with room air as the control. Sham animals demonstrated a biphasic response: ventilation rose to 211% of control at 5 min and fell to 114% of control at 25 min. Denervated animals showed neither the initial increase nor the subsequent decrease in ventilation. Three sham-operated and three denervated cats were studied with 2% CO2 added to the inspirate. Results were similar: intact cats showed a biphasic response to hypoxia, whereas denervated cats showed neither an increase nor a decrease in ventilation. Preliminary experiments showed that hypoxia was not associated with changes in CO2 output or systemic blood pressure in either denervated or intact animals. We conclude that depression of ventilation does not occur in awake denervated cats in response to moderate hypoxia and that the decline in ventilation that occurs in intact cats is in some way dependent on peripheral chemoreceptor output. </jats:p> |
| doi_str_mv | 10.1152/jappl.1993.74.2.805 |
| facet_avail | Online |
| finc_class_facet | Biologie |
| format | ElectronicArticle |
| format_de105 | Article, E-Article |
| format_de14 | Article, E-Article |
| format_de15 | Article, E-Article |
| format_de520 | Article, E-Article |
| format_de540 | Article, E-Article |
| format_dech1 | Article, E-Article |
| format_ded117 | Article, E-Article |
| format_degla1 | E-Article |
| format_del152 | Buch |
| format_del189 | Article, E-Article |
| format_dezi4 | Article |
| format_dezwi2 | Article, E-Article |
| format_finc | Article, E-Article |
| format_nrw | Article, E-Article |
| geogr_code | not assigned |
| geogr_code_person | not assigned |
| id | ai-49-aHR0cDovL2R4LmRvaS5vcmcvMTAuMTE1Mi9qYXBwbC4xOTkzLjc0LjIuODA1 |
| imprint | American Physiological Society, 1993 |
| imprint_str_mv | American Physiological Society, 1993 |
| institution | DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-D161 |
| issn | 1522-1601, 8750-7587 |
| issn_str_mv | 1522-1601, 8750-7587 |
| language | English |
| last_indexed | 2024-03-01T14:55:31.622Z |
| match_str | long1993ventilatoryresponsetomoderatehypoxiainawakechemodenervatedcats |
| mega_collection | American Physiological Society (CrossRef) |
| physical | 805-810 |
| publishDate | 1993 |
| publishDateSort | 1993 |
| publisher | American Physiological Society |
| record_format | ai |
| recordtype | ai |
| series | Journal of Applied Physiology |
| source_id | 49 |
| spelling | Long, W. Q. Giesbrecht, G. G. Anthonisen, N. R. 8750-7587 1522-1601 American Physiological Society Physiology (medical) Physiology http://dx.doi.org/10.1152/jappl.1993.74.2.805 <jats:p> In humans and cats the ventilatory response to 30 min of moderate hypoxia (arterial PO2 40–55 Torr) is biphasic: ventilation increases sharply for the first 5 min and then declines. In humans there is evidence that the decline is dependent on the initial increase. We therefore examined ventilatory responses to moderate isocapnic hypoxia in awake cats with and without carotid body denervation. Cats underwent denervation or a sham operation. Then they were studied in a Drorbaugh-Fenn plethysmograph while ventilation, arterial PO2, and end-tidal PO2 and PCO2 were measured. Three sham-operated and four denervated cats were studied with room air as the control. Sham animals demonstrated a biphasic response: ventilation rose to 211% of control at 5 min and fell to 114% of control at 25 min. Denervated animals showed neither the initial increase nor the subsequent decrease in ventilation. Three sham-operated and three denervated cats were studied with 2% CO2 added to the inspirate. Results were similar: intact cats showed a biphasic response to hypoxia, whereas denervated cats showed neither an increase nor a decrease in ventilation. Preliminary experiments showed that hypoxia was not associated with changes in CO2 output or systemic blood pressure in either denervated or intact animals. We conclude that depression of ventilation does not occur in awake denervated cats in response to moderate hypoxia and that the decline in ventilation that occurs in intact cats is in some way dependent on peripheral chemoreceptor output. </jats:p> Ventilatory response to moderate hypoxia in awake chemodenervated cats Journal of Applied Physiology |
| spellingShingle | Long, W. Q., Giesbrecht, G. G., Anthonisen, N. R., Journal of Applied Physiology, Ventilatory response to moderate hypoxia in awake chemodenervated cats, Physiology (medical), Physiology |
| title | Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_full | Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_fullStr | Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_full_unstemmed | Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_short | Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_sort | ventilatory response to moderate hypoxia in awake chemodenervated cats |
| title_unstemmed | Ventilatory response to moderate hypoxia in awake chemodenervated cats |
| topic | Physiology (medical), Physiology |
| url | http://dx.doi.org/10.1152/jappl.1993.74.2.805 |