Ultrasonic evidence of acute interstitial lung edema after SCUBA diving is resolved within 2-3h.
Recently, an increase in extravascular lung water (EVLW) accumulation with diminished left ventricular contractility within 60 min after SCUBA diving was reported. We have observed previously that diving was associated with reduced diffusing lung capacity for carbon monoxide (DLCO) and arterial oxygen pressure for up to 60-80 min postdive. Here we investigated whether increased EVLW persists 2-3h after successive deep dives in a group of seven male divers. The echocardiographic indices of pulmonary water accumulation (ultrasound lung comets (ULC)) and left ventricular function, respiratory functional measurements and arterial oxygen saturation (SaO(2)) were assessed 2-3h post diving, while venous gas bubbles (VGB) and the blood levels of NT-proBNP and proANP were analyzed 40 min after surfacing. Spirometry values, flow-volume, DLCO, SaO(2) and ULC were unchanged after each dive, except for significant increase in ULC after the second dive. Left ventricular function was reduced, while NT-proBNP and proANP levels were significantly elevated after majority of dives, suggesting a cardiac strain.
Ljubkovic
Marko
M
Department of Physiology, University of Split School of Medicine, Soltanska 2, 21 000 Split, Croatia.
Gaustad
Svein Erik
SE
Marinovic
Jasna
J
Obad
Ante
A
Ivancev
Vladimir
V
Bilopavlovic
Nada
N
Breskovic
Toni
T
Wisloff
Ulrik
U
Brubakk
Alf
A
Dujic
Zeljko
Z
D000328:Adult; D009320:Atrial Natriuretic Factor / Q000097:blood*; D003665:Decompression Sickness / Q000097:blood / Q000000981:diagnostic imaging / Q000503:physiopathology*; D004242:Diving / Q000009:adverse effects*; D015633:Extravascular Lung Water / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008875:Middle Aged; D020097:Natriuretic Peptide, Brain / Q000097:blood*; D010100:Oxygen / Q000097:blood; D010446:Peptide Fragments / Q000097:blood*; D011653:Pulmonary Diffusing Capacity / Q000379:methods; D011654:Pulmonary Edema / Q000000981:diagnostic imaging* / Q000209:etiology; D013147:Spirometry / Q000379:methods; D013997:Time Factors; D014463:Ultrasonography; D016277:Ventricular Function, Left
D010446:Peptide Fragments; C109794:pro-brain natriuretic peptide (1-76); D020097:Natriuretic Peptide, Brain; D009320:Atrial Natriuretic Factor; D010100:Oxygen