A single open sea air dive increases pulmonary artery pressure and reduces right ventricular function in professional divers

Dujić, Željko; Obad, Ante; Palada, Ivan; Valić, Zoran; Brubakk, Alf

Pregled bibliografske jedinice broj: 248470

A single open sea air dive increases pulmonary artery pressure and reduces right ventricular function in professional divers

Dujić, Željko; Obad, Ante; Palada, Ivan; Valić, Zoran; Brubakk, Alf

A single open sea air dive increases pulmonary artery pressure and reduces right ventricular function in professional divers // European Journal of Applied Physiology, 97 (2006), 4; 478-485 (međunarodna recenzija, članak, znanstveni)

CROSBI ID: 248470 Za ispravke kontaktirajte CROSBI podršku putem web obrasca

Naslov
A single open sea air dive increases pulmonary artery pressure and reduces right ventricular function in professional divers

Autori
Dujić, Željko ; Obad, Ante ; Palada, Ivan ; Valić, Zoran ; Brubakk, Alf

Izvornik
European Journal of Applied Physiology (1439-6319) 97 (2006), 4; 478-485

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
diving; pulmonary artery pressure; professional; cardiac output; gas bubbles

Sažetak
After decompression from dives, bubbles are frequently observed in the right ventricular outflow tract and may lead to vascular damage, pulmonary arterial hypertension and right ventricular overload. No data exist on the effect of open sea diving on the pulmonary artery pressure (PAP). Eight professional divers performed an open sea air dive to 30 msw. Before and postdive a Doppler echocardiographic study was undertaken. Systolic pulmonary artery pressure (SPAP) was estimated from measurement of peak flow velocity of the tricuspid regurgitant jet ; the ratio between pulmonary artery acceleration times (AccT) and right ventricular ejection time (RVET) was used as an estimate of the mean PAP. No evidence of either patent foramen ovale or intra-pulmonary shunt was found in any subject postdive after performing a Valsalva maneuver. SPAP increased from 25 ± 3 to 33 ± 2 mmHg and AccT/ RVET ratio decreased from 0.44 ± 0.04 to 0.3 ± 0.02 20 min after the dive, respectively. Pulmonary vascular resistance increased from 1.2 ± 0.1 to 1.4 ± 0.1 Woods Units. Postdive right ventricle end-diastolic and endsystolic volumes were increased for about 19% (P = 0.001) and 33% (P = 0.001) and right ejection fraction decreased about for 6% (P = 0.001). Cardiac output decreased from 4.8 ± 0.9 (l min1) to 4.0 ± 0.6 at 40 min postdive due to decreases in heart rate and stroke volume. This study shows that a single open sea dive may be associated with right heart overload due to increased pressure in the pulmonary artery.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne medicinske znanosti

POVEZANOST RADA

Projekti:
0216006
0216007

Ustanove:
Medicinski fakultet, Split

Profili:

Zoran Valić (autor)