Daily Chronic Intermittent Hypobaric Hypoxia Does Not Induce Chronic Increase in Pulmonary Arterial Pressure Assessed by Echocardiography
Chronic hypoxia causes pulmonary vascular remodeling resulting in persistently increased pulmonary arterial pressures (PAP) even after return to normoxia. Recently, interest in chronic intermittent hypobaric hypoxia (CIHH) was raised because it occurs in subjects working at high altitude (HA) but li...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Canadian Respiratory Journal |
| Online Access: | http://dx.doi.org/10.1155/2018/9649716 |
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| author | Jeremias Götschke Pontus Mertsch Nikolaus Kneidinger Diego Kauffmann-Guerrero Jürgen Behr Rudolf Maria Huber Frank Reichenberger Katrin Milger |
| author_facet | Jeremias Götschke Pontus Mertsch Nikolaus Kneidinger Diego Kauffmann-Guerrero Jürgen Behr Rudolf Maria Huber Frank Reichenberger Katrin Milger |
| author_sort | Jeremias Götschke |
| collection | DOAJ |
| description | Chronic hypoxia causes pulmonary vascular remodeling resulting in persistently increased pulmonary arterial pressures (PAP) even after return to normoxia. Recently, interest in chronic intermittent hypobaric hypoxia (CIHH) was raised because it occurs in subjects working at high altitude (HA) but living in lowland. However, effects of daily CIHH on PAP are unknown. In this pilot study, we included 8 healthy subjects working at (2650 m) each workday for 8-9 h while living and sleeping at LA and 8 matched control subjects living and working at LA. Cardiorespiratory measurements including echocardiography at rest and during exercise were performed at LA (Munich, 530 m) and HA (Zugspitze, 2650 m). Hemoglobin was higher in CIHH subjects. LA echocardiography showed normal right and left cardiac dimensions and function in all subjects. Systolic PAP (sPAP) and tricuspid annular plane systolic excursion (TAPSE) at rest were similar in both groups. Resting blood gas analysis (BGA) at HA revealed decreased pCO2 in CIHH compared to controls (HA: 28.4 versus 31.7 mmHg, p=0.01). During exercise, sPAP was lower in CIHH subjects compared to controls (LA: 28.7 versus 35.3 mmHg, p=0.02; HA: 26.3 versus 33.6 mmHg, p=0.04) and peripheral oxygen saturation (SpO2) was higher. In sum, subjects exposed to CIHH showed no signs of pulmonary vascular remodeling. |
| format | Article |
| id | doaj-art-826a0ea9e0a64b6e9d5f2502b5ef7e39 |
| institution | Kabale University |
| issn | 1198-2241 1916-7245 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Canadian Respiratory Journal |
| spelling | doaj-art-826a0ea9e0a64b6e9d5f2502b5ef7e392025-02-03T05:52:48ZengWileyCanadian Respiratory Journal1198-22411916-72452018-01-01201810.1155/2018/96497169649716Daily Chronic Intermittent Hypobaric Hypoxia Does Not Induce Chronic Increase in Pulmonary Arterial Pressure Assessed by EchocardiographyJeremias Götschke0Pontus Mertsch1Nikolaus Kneidinger2Diego Kauffmann-Guerrero3Jürgen Behr4Rudolf Maria Huber5Frank Reichenberger6Katrin Milger7Department of Internal Medicine V, Ludwig-Maximilians-University of Munich, Munich, GermanyDepartment of Internal Medicine V, Ludwig-Maximilians-University of Munich, Munich, GermanyDepartment of Internal Medicine V, Ludwig-Maximilians-University of Munich, Munich, GermanyDepartment of Internal Medicine V, Ludwig-Maximilians-University of Munich, Munich, GermanyDepartment of Internal Medicine V, Ludwig-Maximilians-University of Munich, Munich, GermanyDepartment of Internal Medicine V, Ludwig-Maximilians-University of Munich, Munich, GermanyComprehensive Pneumology Center (CPC-M), Member of the German Center for Lung Research (DZL), Munich, GermanyDepartment of Internal Medicine V, Ludwig-Maximilians-University of Munich, Munich, GermanyChronic hypoxia causes pulmonary vascular remodeling resulting in persistently increased pulmonary arterial pressures (PAP) even after return to normoxia. Recently, interest in chronic intermittent hypobaric hypoxia (CIHH) was raised because it occurs in subjects working at high altitude (HA) but living in lowland. However, effects of daily CIHH on PAP are unknown. In this pilot study, we included 8 healthy subjects working at (2650 m) each workday for 8-9 h while living and sleeping at LA and 8 matched control subjects living and working at LA. Cardiorespiratory measurements including echocardiography at rest and during exercise were performed at LA (Munich, 530 m) and HA (Zugspitze, 2650 m). Hemoglobin was higher in CIHH subjects. LA echocardiography showed normal right and left cardiac dimensions and function in all subjects. Systolic PAP (sPAP) and tricuspid annular plane systolic excursion (TAPSE) at rest were similar in both groups. Resting blood gas analysis (BGA) at HA revealed decreased pCO2 in CIHH compared to controls (HA: 28.4 versus 31.7 mmHg, p=0.01). During exercise, sPAP was lower in CIHH subjects compared to controls (LA: 28.7 versus 35.3 mmHg, p=0.02; HA: 26.3 versus 33.6 mmHg, p=0.04) and peripheral oxygen saturation (SpO2) was higher. In sum, subjects exposed to CIHH showed no signs of pulmonary vascular remodeling.http://dx.doi.org/10.1155/2018/9649716 |
| spellingShingle | Jeremias Götschke Pontus Mertsch Nikolaus Kneidinger Diego Kauffmann-Guerrero Jürgen Behr Rudolf Maria Huber Frank Reichenberger Katrin Milger Daily Chronic Intermittent Hypobaric Hypoxia Does Not Induce Chronic Increase in Pulmonary Arterial Pressure Assessed by Echocardiography Canadian Respiratory Journal |
| title | Daily Chronic Intermittent Hypobaric Hypoxia Does Not Induce Chronic Increase in Pulmonary Arterial Pressure Assessed by Echocardiography |
| title_full | Daily Chronic Intermittent Hypobaric Hypoxia Does Not Induce Chronic Increase in Pulmonary Arterial Pressure Assessed by Echocardiography |
| title_fullStr | Daily Chronic Intermittent Hypobaric Hypoxia Does Not Induce Chronic Increase in Pulmonary Arterial Pressure Assessed by Echocardiography |
| title_full_unstemmed | Daily Chronic Intermittent Hypobaric Hypoxia Does Not Induce Chronic Increase in Pulmonary Arterial Pressure Assessed by Echocardiography |
| title_short | Daily Chronic Intermittent Hypobaric Hypoxia Does Not Induce Chronic Increase in Pulmonary Arterial Pressure Assessed by Echocardiography |
| title_sort | daily chronic intermittent hypobaric hypoxia does not induce chronic increase in pulmonary arterial pressure assessed by echocardiography |
| url | http://dx.doi.org/10.1155/2018/9649716 |
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