Comments on Point:Counterpoint: Pulmonary edema does/does not occur in human athletes performing heavy sea-level exercise MILD INTERSTITIAL PULMONARY EDEMA OCCURS DURING SEA LEVEL STRENUOUS EXERCISE
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چکیده
TO THE EDITOR: We read with interest the Point:Counterpoint opinion piece titled “Pulmonary edema does/does not occur in human athletes performing heavy sea-level exercise” (3). We do not think there is much debate to this opinion piece. Several studies using healthy human subjects (2, 4, 5, 7) demonstrate evidence of pulmonary edema from sea-level exercise. In a recent review (6), 51 of 78 subjects (65%) demonstrated mild, interstitial pulmonary edema from maximum effort exercise. In fact, the likelihood of developing mild, interstitial edema from maximum effort exercise was four times more compared with submaximal, prolonged exercise not of maximum effort (6). Also, independent of whether exercise was performed in normoxic or mildly hypoxic environments, the percentage of subjects developing edema were nearly the same (62– 69%) (6). The timing of the postexercise imaging does not influence the determination of pulmonary edema (6). This argues convincingly that the diagnosis of edema assessed within the first 10 min postexercise (1) or between 60 and 120 min postexercise (1, 2, 5) reflects true pulmonary edema. Furthermore, irrespective of whether chest radiographs or CT/ MRI imaging was used to detect pulmonary edema, these modalities were equally sensitive for detection of edema (6). The real question is not whether mild interstitial pulmonary edema is triggered from heavy exercise but whether this edema is meaningful. So far the limited data suggest that arterial-blood gases are not related to mild interstitial pulmonary edema (8); however, it is unclear what effect, if any, it may have on endurance exercise performance.
منابع مشابه
Point:Counterpoint: Pulmonary edema does/does not occur in human athletes performing heavy sea-level exercise POINT: PULMONARY EDEMA DOES OCCUR IN HUMAN ATHLETES PERFORMING HEAVY SEA-LEVEL EXERCISE
My colleagues (25) have a difficult task, because it is easier to prove a positive than a negative. A 1978 case report documents two athletes that presented, after running the Comrades marathon, with shortness of breath, cough productive of blood tinged and/or pink frothy sputum, crepitations on auscultation, and chest radiograph findings of pulmonary edema (18). There can be no doubt that thes...
متن کاملCounterpoint: Pulmonary Edema Does Not Occur in Human Athletes Performing Heavy Sea-level Exercise
PD, Hopkins SR. Does gender affect human pulmonary gas exchange during exercise? J Physiol 557: 529–541, 2004. 22. Podolsky A, Eldridge MW, Richardson RS, Knight DR, Johnson EC, Hopkins SR, Johnson DH, Michimata H, Grassi B, Feiner J, Kurdak SS, Bickler PE, Severinghaus JW, Wagner PD. Exercise-induced V̇A/Q̇ inequality in subjects with prior high-altitude pulmonary edema. J Appl Physiol 81: 922–9...
متن کاملPoint: Pulmonary edema does occur in human athletes performing heavy sea-level exercise.
My colleagues (25) have a difficult task, because it is easier to prove a positive than a negative. A 1978 case report documents two athletes that presented, after running the Comrades marathon, with shortness of breath, cough productive of blood tinged and/or pink frothy sputum, crepitations on auscultation, and chest radiograph findings of pulmonary edema (18). There can be no doubt that thes...
متن کاملCounterpoint: Pulmonary edema does not occur in human athletes performing heavy sea-level exercise.
PD, Hopkins SR. Does gender affect human pulmonary gas exchange during exercise? J Physiol 557: 529–541, 2004. 22. Podolsky A, Eldridge MW, Richardson RS, Knight DR, Johnson EC, Hopkins SR, Johnson DH, Michimata H, Grassi B, Feiner J, Kurdak SS, Bickler PE, Severinghaus JW, Wagner PD. Exercise-induced V̇A/Q̇ inequality in subjects with prior high-altitude pulmonary edema. J Appl Physiol 81: 922–9...
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