Dereglările metabolismului gazos şi celui acidobazic la pacienţii cu trombembolia arterei pulmonare/tromboză pulmonară
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COJOCARU, Victor, CUŞNIR, Olga, STOICA, Natalia, MORARU, Elena, ŢURCALENCO, Tatiana. Dereglările metabolismului gazos şi celui acidobazic la pacienţii cu trombembolia arterei pulmonare/tromboză pulmonară. In: Buletinul Academiei de Ştiinţe a Moldovei. Ştiinţe Medicale, 2011, nr. 3(31), pp. 167-170. ISSN 1857-0011.
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Buletinul Academiei de Ştiinţe a Moldovei. Ştiinţe Medicale
Numărul 3(31) / 2011 / ISSN 1857-0011

Dereglările metabolismului gazos şi celui acidobazic la pacienţii cu trombembolia arterei pulmonare/tromboză pulmonară

Pag. 167-170

Cojocaru Victor, Cuşnir Olga, Stoica Natalia, Moraru Elena, Ţurcalenco Tatiana
 
Universitatea de Stat de Medicină şi Farmacie „Nicolae Testemiţanu“
 
 
Disponibil în IBN: 16 decembrie 2013


Rezumat

Modifi cările anormale ale gazelor pulmonare sunt consecinţe deseori inevitabile în TEAP/TP acut. Hipocapnia este comună, uneori însă nu atât de des ca hipoxemia. La pacienţii cu insufi cienţă respiratorie hipercapnică, TEAP/ TP uneori poate fi însoţită de reducerea PaCO2. Gradul de hipocapnie pare a fi independent de gradul de severitate a hipoxemiei şi este puţin probabil ca acest fapt să fi e consecinţa stimulării chemoreceptorilor. Schimbul anormal de gaze la pacienţii cu TEAP/TP rezultă din mecanisme combinate, ce includ diferenţa de ventilaţie/perfuzie (VA/Q), şuntul intrapulmonar şi intracardiac, difuziune neadecvată şi hipoxemie venoasă mixtă. De aceea, importanţa acestor factori este diferită la fi ecare pacient.

Abnormal pulmonary gas exchange is an almost inevitable consequence of acute pulmonary thromboembolism/ thrombosis. Hypocapnia is common, although perhaps not as universal as hypoxemia. Even in pacients with hypercapnic respiratory failure, acute pulmonary embolism has been associated with reduction in the PaCO2 . Because the degree of hypocapnia appears to be independent of the severity of the hypoxemia, it is unlikely that it is due to chemoreceptor stimulation. The abnormal gas exchange in pacient with acute pulmonary thromboembolism/trhrombosis results from a combination of mechanism, including ventilation/perfusion (VA/Q) inequality, intrapulmonary and intracardiac shunting, diffusion impairment, and mixed venous hypoxemia. The importance of each of these factors varies from patient to patient.

Аномальные изменения легочного газа часто явля- ются неизбежными последствиями ТЭЛА/ТЛ. Гипо- капния является обычным явлением, но иногда не так часто как гипоксемия. Иногда у пациентов с гиперкап- нической дыхательной недостаточностью ТЭЛА/ТЛ может сопровождаться снижением PaCO2. Степень ги- покапнии кажется независимой от тяжести гипоксемии и менее всего зависит от стимуляции рецепторов. На- рушение газообмена у больных с ТЭЛА/ТЛ происходит из-за комбинированных механизмов, включая разницу между вентиляцией/перфузией (VA/Q), внутрилегоч- ный и внутрисердечный шунты. Поэтому, важность этих факторов различна для разных пациентов.

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deseori inevitabile în TEAP/TP acut. Hipocapnia
este comună, uneori însă nu atât de des ca hipoxemia. La
pacienţii cu insufi cienţă respiratorie hipercapnică, TEAP/
TP uneori poate fi însoţită de reducerea PaCO2. Gradul de
hipocapnie pare a fi independent de gradul de severitate a
hipoxemiei şi este puţin probabil ca acest fapt să fi e consecinţa
stimulării chemoreceptorilor. Schimbul anormal de
gaze la pacienţii cu TEAP/TP rezultă din mecanisme combinate,
ce includ diferenţa de ventilaţie/perfuzie (VA/Q),
şuntul intrapulmonar şi intracardiac, difuziune neadecvată
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thromboembolism/ thrombosis. Hypocapnia is common,
although perhaps not as universal as hypoxemia. Even
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pulmonary embolism has been associated with reduction
in the PaCO2 . Because the degree of hypocapnia appears
to be independent of the severity of the hypoxemia, it is
unlikely that it is due to chemoreceptor stimulation. The
abnormal gas exchange in pacient with acute pulmonary
thromboembolism/trhrombosis results from a combination
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рушение газообмена у больных с ТЭЛА/ТЛ происходит
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