Zusammenfassung
Nach der Implantation eines linksventrikulären Herzunterstützungssystems („left ventricular assist device“, LVAD) wird die Teilnahme an einem kardiologischen Rehabilitationsprogramm (KardReha) ausdrücklich empfohlen. Wesentliche Inhalte bilden neben vielen weiteren Bereichen insbesondere die Sport- und Bewegungstherapie sowie Aspekte der Rhythmuskontrolle. LVAD-Patienten erreichen im Verlauf in der Regel wieder eine gute Lebensqualität und zufriedenstellende funktionelle Kapazität. Die maximalen Leistungswerte blieben hingegen u. a. aufgrund der fest eingestellten Pumpenumdrehungszahl und des limitierten Herzzeitvolumens deutlich reduziert. Von besonderer Wichtigkeit ist daher ein strukturiertes und langfristiges körperliches Training – auch über den Zeitraum der KardReha Phase II hinaus – zur Optimierung der neuromuskulären Ansteuerung sowie der Stoffwechselprozesse innerhalb der Arbeitsmuskulatur. Einschränkungen in der körperlichen Leistungsfähigkeit können auch durch das Auftreten von supraventrikulären und ventrikulären Arrhythmien hervorgerufen werden. Ursächlich ist in beiden Fällen eine zunehmende hämodynamische Beeinträchtigung des rechten Herzens mit weiteren negativen hämodynamischen Konsequenzen für den vom LVAD generierten Fluss. Auch eine nicht adäquate Einstellung weiterer bereits implantierter kardialer elektronischer Geräte (z. B. implantierbarer Kardioverter-Defibrillator [ICD] oder kardiale Resynchronisationstherapie mit Defibrillator [CRT-D]) kann die Hämodynamik bei LVAD-Patienten entscheidend beeinflussen. In diesem Artikel soll im Folgenden auf leistungsphysiologische und rhythmologische Aspekte der LVAD-Therapie im Rahmen der KardReha eingegangen werden.
Abstract
After implantation of a left ventricular assist device (LVAD), it is strongly recommended that patients participate in an inpatient cardiac rehabilitation program (CR). Relevant topics during CR include sports and exercise therapy as well as aspects of cardiac rhythm control. Over time, LVAD patients usually regain a good quality of life and an adequate functional capacity can be observed. However, maximum performance values remain markedly reduced, in part due to the fixed LVAD pump speed and the limited total cardiac output. Therefore, structured long-term exercise training programs (even beyond CR phase II) are of particular importance in order to optimize neuromuscular control and muscle metabolism. Limitations to physical performance values may also be caused by the occurrence of supraventricular and/or ventricular arrhythmias. In both cases, the cause is an increasing hemodynamic impairment of the right heart, which may also lead to a reduced LVAD pump flow. In addition, inadequate setting of other cardiac implantable electronic devices (e.g., implantable cardioverter–defibrillator [ICD] or cardiac resynchronization therapy with defibrillator [CRT-D]) may also have a crucial impact on hemodynamics after LVAD implantation. In this article, we will discuss specific aspects of LVAD therapy related to exercise and rhythm control, particularly in the context of CR programs.
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T. Schmidt und N. Reiss geben an, dass kein Interessenkonflikt besteht.
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Schmidt, T., Reiss, N. LVAD in der kardiologischen Rehabilitation. Herzschr Elektrophys 34, 45–51 (2023). https://doi.org/10.1007/s00399-022-00914-3
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DOI: https://doi.org/10.1007/s00399-022-00914-3
Schlüsselwörter
- Herzinsuffizienz
- Linksventrikuläres Herzunterstützungssystem
- Körperliches Training
- Rhythmusstörungen
- Lebensqualität