Zusammenfassung
Eine lungenprotektive Beatmung mit niedrigen Tidalvolumina, Plateaudruck < 30 cm H2 O, Sauerstoffsättigung > 90% und permissiver Hyperkapnie führt bei Patienten mit „acute lung injury” (ALI) und „acute respiratory distress syndrome” (ARDS) zu einer Senkung der Sterblichkeit. Der PEEP ist abhängig vom Sauerstoffbedarf zu wählen. Die Hochfrequenzoszillationsventilation und die NAVA-Beatmung (Neurally Adjusted Ventilatory Assist) sind vielversprechende Verfahren. Weitere Studien mit harten Endpunkten müssen allerdings für eine abschließende Beurteilung abgewartet werden. Venovenöse extrakorporale Lungenunterstützungsverfahren (ECMO) können bei schwerstem, vital bedrohlichem Lungenversagen einen lebensnotwendigen Gasaustausch sichern, um Zeit für die Heilung der Lunge zu gewinnen und die Beatmungsaggressivität zu reduzieren. In der S3-Leitlinie zur Analgesie und Sedierung in der Intensivmedizin wird ein konsequentes Monitoring der Sedierungstiefe und der Schmerzintensität gefordert. Die Sedierung soll täglich unterbrochen werden, mit Aufwach- und, falls möglich, Spontanatmungsversuch. Unterstützende Therapieverfahren: Die Lagerungstherapie mit Bauchlagerung sowie die Anwendung von inhalativen Vasodilatantien können die Ventilations-Perfusionsstörungen und somit die Oxygenierung verbessern. Eine supportive Therapie mit Surfactant ist dagegen beim Lungenversagen des Erwachsenen nicht sinnvoll.
Abstract
Lung-protective ventilation with a low tidal volume, plateau pressure < 30 cm H2 O. oxygen saturation > 90% and permissive hypercapnia results in reduction of the mortality rate in patients with acute lung injury (ALI) and acute respiratory distress syndrome (ARDS). The level of the positive end-expiratory pressure (PEEP) must be chosen in relation to oxygen requirement. High frequency oscillatory ventilation and neurally adjusted ventilatory assist are promising methods.However, further studies with firm end-points have to be awaited before a final judgment is possible. Veno-venous extracorporeal membrane oxygenation (ECMO) can ensure life-sustaining gas exchange in patients with severe vitally compromised pulmonary failure, to provide time for lung tissue to heal and reduce ventilatory stress. The latest guidelines for analgesia and sedation in intensive care medicine demand consistent monitoring of the level of sedation and the intensity of pain. The sedation should be interrupted daily, with phases of awakenings and, if possible, spontaneous breathing. Methods of supportive treatment: Positional treatment (prone position) and inhalation of vasodilators can improve ventilation/perfusion mismatch and thus oxygenation. However, administration of surfactant is currently not advised in adult respiratory failure.
Schlüsselwörter
ARDS - akutes Lungenversagen - Beatmung - extrakorporale Lungenunterstützung - Analgosedierung
Keywords
acute respiratory distress syndrome - acute lung injury - assisted ventilation - extracororeal lung assist - pain relief - sedation
Literatur
1
Arlt M, Philipp A, Voelkel S. et al .
Extracorporeal membrane oxygenation in
severe trauma patients with bleeding shock.
Resuscitation.
2010;
81
804-809
2
Afshari A, Brok J, Moller A M, Wetterslev J.
Inhaled nitric oxide
for acute respiratory distress syndrome (ards) and acute lung injury
in children and adults.
Cochrane Database Syst Rev.
2010;
7 CD002787
3
Bartlett R H, Gattinoni L.
Current status of
extracorporeal life support (ecmo) for cardiopulmonary failure.
Minerva Anestesiol.
2010;
76
534-540
4
Bengtsson J A, Edberg K E.
Neurally adjusted ventilatory
assist in children.
Pediatr Crit Care Med.
2010;
11
253-257
5
Bikker I G, Leonhardt S, Reis M. et al .
Bedside measurement of changes in lung
impedance to monitor alveolar ventilation in dependent and non-dependent
parts by electrical impedance tomography during a positive end-expiratory
pressure trial in mechanically ventilated intensive care unit patients.
Crit Care.
2010;
14
R100
6
Briel M, Meade M, Mercat A. et
al .
Higher vs lower positive end-expiratory pressure
in patients with acute lung injury and acute respiratory distress
syndrome.
JAMA.
2010;
303
865-873
7
Brogan T V, Thiagarajan R R, Rycus P T. et al .
Extracorporeal membrane
oxygenation in adults with severe respiratory failure.
Intens Care
Med.
2009;
35
2105-2114
8
Brower R G, Morris A, MacIntyre N. et al .
Effects of recruitment maneuvers in patients
with acute lung injury and acute respiratory distress syndrome ventilated
with high positive end-expiratory pressure.
Crit Care
Med.
2003;
31
2592-2597
9
Davies A, Jones D, Bailey M. et
al .
Extracorporeal membrane oxygenation for 2009 influenza
a (h1n1) acute respiratory distress syndrome.
JAMA.
2009;
302
1888-1895
10
Determann R M, Royakkers A, Wolthius E K. et al .
Ventilation with lower tidal
volumes as compared to conventional tidal volumes for patients without
acute lung injury.
Crit Care.
2010;
14
R1
11
Gattinoni L, Caironi P.
Refining ventilatory treatment
for acute lung injury and acute respiratory distress syndrome.
JAMA.
2008;
299
691-693
12
Girard T D, Kress J P, Fuchs B D. et al .
Efficacy and safety of a
paired sedation and ventilator weaning protocol for mechanically
ventilated patients in intensive care.
Lancet.
2008;
371
126-134
13
Karagiannidis C, Lubnow M, Philipp A. et al .
Autoregulation of ventilation with neurally
adjusted ventilatory assist on extracorporeal lung support.
Intensive
Care Med.
2010;
36
2038-2044
14
Kesecioglu J, Beale R, Stewart TE. et al .
Exogenous natural surfactant for treatment
of acute lung injury and the acute respiratory distress syndrome.
Am J Respir Crit Care Med.
2009;
180
989-994
15
Muller T, Philipp A, Luchner A. et al .
A new miniaturized system for extracorporeal
membrane oxygenation in adult respiratory failure.
Crit
Care.
2009;
13
R205
16
Navalesi P, Colombo D, Della Corte F.
Nava ventilation.
Minerva Anestesiol.
2010;
76
346-352
17
Peek G J, Mugford M, Tiruvoipati R. et al .
Efficacy and economic assessment of conventional ventilatory
support versus extracorporeal membrane oxygenation for severe adult
respiratory failure.
Lancet.
2009;
374
1351-1363
18
Steinberg K P, Hudson L D, Goodman R B. et al .
Efficacy and safety of corticosteroids
for persistent acute respiratory distress syndrome.
N Engl
J Med.
2006;
354
1671-1684
19
Strom T, Martinussen T, Toft P.
A protocol of no sedation for critically ill patients receiving mechanical
ventilation.
Lancet.
2010;
375
475-480
20
Sud S, Sud M, Friedrich J O, Meade M O, Ferguson N D, Wunsch H, Adhikari N K.
High frequency oscillation in
patients with acute lung injury and acute respiratory distress syndrome.
Brit Med J.
2010;
340
c2327
21
Sud S, Friedrich J O, Taccone P. et al .
Prone ventilation reduces mortality in
patients with acute respiratory failure and severe hypoxemia.
Intens Care Med.
2010;
36
585-599
22
Taccone P, Pesenti A, Latini R. et al .
Prone positioning in patients with moderate
and severe acute respiratory distress syndrome.
JAMA.
2009;
302
1977-1984
Prof. Dr. Michael Pfeiffer
Klinik Donaustauf,
Zentrum für Pneumologie
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93093 Donaustauf
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