Il paziente cardiologico & DISTURBI RESPIRATORI DURANTE SONNO Vincenzo Patruno SOC Pneumologia Riabilitativa I.M.F.R. - Udine due punti di vista.................. Paziente con apnee durante sonno quali malattie cardiache ? Paziente con malattie cardiache quali apnee durante sonno? Epidemiology: discovered the association Hypertension OSA Cardiac Arrhythmia Coronary Ischemic disease Heart Failure Report of the Joint National Committee on Prevention, Detection, Evaluation and Treatment of Hight Blood Pressure “OSA as first of identifiable causes of hypertension” Chobanian AV. JAMA 2003, 289:2560 2007 EUROPEAN SOCIETY OF CARDIOLOGY – EUROPEAN SOCIETY OF HYPERTENSION GUIDELINES ….FIRST ACKNOWLEDGE OSA AS ONE OF THE FACTORS RESPONSIBLE FOR RESISTANT HYPERTENSION The Journal of Clinical Hypertension Volume 9, Issue Supplement s1, pages 2–6, January 2007 Atrial Fibrillation In a substudy of the Sleep Heart Health Study, individuals with severe sleep apnea had four times the odds of having AF (OR 4.02, 95% CI 1.03–15.74) compared with individuals without OSA, even after adjusting for possible confounding factors. Mehra R, Association of nocturnal arrhythmias with sleep-disordered breathing. The Sleep Heart Health Study. Am J Respir Crit Care Med 2006;173: 910–6. Another cohort study of 3542 patients showed that OSA is an independent risk factors for AF (HR 3.29, 95% CI 1.35–8.04, P . 0.009) Gami AS Obstructive sleep apnea, obesity, and the risk of incident atrial fibrillation. J Am Coll Cardiol 2007;49:565–71. AF recurrence….. …patients with OSA have a 25% greater risk of AF recurrence after catheter ablation than those without OSA (risk ratio 1.25, 95% confidence interval 1.08 to 1.45)…. Am J Cardiol. 2011 Jul 1;108(1):47-51. Epub 2011 Apr 29. Meta-analysis of obstructive sleep apnea as predictor of atrial fibrillation recurrence after catheter ablation. Ng CY, Liu T, Shehata M, Stevens S, Chugh SS, Wang X. (Am J Respir Crit Care Med. 163, 19-25 2001) Coronary Heart Disease OR 1.22 Obstructive Sleep Apnea & Chronic Heart Failure 10% of CHF patients have obstructive apneas Javaheri S. Circulation 1998, 97:2154–2159 -. 11% of CHF patients have obstructive apneas . DON D. SIN AM J RESPIR CRIT CARE MED 1999;160:1101–1106. 9% of CHF patients have obstructive apneas Lanfranchi P., Somers VK et al. Circulation 2003 107/5 727-732 matic Positive Airway Pressure (APAP) Pressione critica = concetto dinamico Pcrit = Dynamic OSA Pressione efficace Best PAP = = Dynamic variabile CVDs FE 37% 49% in una settimana di trattamento CPAP Malone et al. Lancet 1991;338:1480-4 Cuore e Respiro: Due punti di vista Paziente con apnee quali malattie cardiache ? Paziente con malattia cardiaca quali apnee ? Central Sleep Apnea & Chronic Heart Failure 40% of CHF patients have CSA-CSR Javaheri S. Circulation 1998, 97:2154–2159 -. 27% of CHF patients have CSA-CSR DON D. SIN .AM J RESPIR CRIT CARE MED 1999;160:1101–1106. 69% of CHF patients have CSA-CSR Lanfranchi P. Circulation 2003 feb 11 107/5) 727-732 Mechanisms of CSR in CHF (I): Wedge pressure and carbon dioxide levels in heart failure Solin P, et al. Influence of pulmonary capillary wedge pressure on central apnea in heart failure. Circulation. 1999;99:1574-1579 Mechanisms of CSR in CHF (II): Ventilatory Response to CO2 A MECHANISM OF CENTRAL SLEEP APNEA IN PATIENTS WITH HEART FAILURE JAVAHERI, N Engl J Med 1999;341:949-54 Mechanisms of CSR in CHF (III): Circulatory delay and Cycle Lenght OB= OSA, CN= CSR * + = + *Intellectual property of A. Braghiroli OSCILLAZIONI PERIODICHE INTORNO ALLA SOGLIA APNEICA CO2 Elevata risposta ventilatoria Ridotto C.O. Ridotta forza muscolare Ridotte riserve O2 Clinically, CSA–CSR was associated to higher mortality in CHF In a large community based study CSA-CSR was not found to be associated with increased mortality QUALE E’ IL SIGNIFICATO DEL CSR ? FENOMENO CHE RISPECCHIA UN DANNO D’ORGANO…….. QUALE E’ IL SIGNIFICATO DEL CSR ? 1) Meccanismo in se capace di danneggiare il cuore…..? 2) Meccanismo “di compenso” più benefico che dannoso…..? 258 CHF + CSA/CRS (mean Age 63, FE% 24, AHI 40) CPAP Group 130 Control Group 128 2 years follow-up CANPAP Commentary –CANPAP study very selective patient set – strongly CSR / CSA (low OSA prevalence) –Beta Blockers not used in all subjects –Low over-all event rate (deaths) leave study underpowered for meaningful conclusions –Early increased mortality with CPAP, but without regard to usage or efficacy Conclusioni • Nello scompenso cardiaco cronico associato ad apnee ostruttive il trattamento con CPAP migliora la funzione cardiaca • Nello scompenso cardiaco cronico associato ad apnee centrali non sono ancora disponibili evidenze definitive che la correzione efficace del disturbo respiratorio porti a un miglioramento della sopravvivenza... .......agire con il ventilatore per correggere il CSR o agire per migliorare l’emodinamica (che poi il CSR si corregge da solo)? Questo è il problema... http://dx.doi.org/10.1016/j.ijcard.2013.04.107 The unloading effect of CPAP therapy decreases both preload and stroke volumes (SV) in patients with low pulmonary capillary wedge pressure (PCWP). In contrast, PAP therapy increases SV in a state of high PCWP in patients with either exacerbated or stable CHF. This intriguing phenomenon can be explained by diastolic ventricular interaction. Unloading the RV by lower body negative pressure in patients with severe CHF reduces the external constraint on LV filling, resulting in the paradoxical dilation of the LV with a rightward shift of the interventricular septum. Under these circumstances, the Frank-Starling law predicts an increase in SV.