Frequency domain causal analysis allows the detection of baroreflex control recovery in patients undergoing surgical aortic valve replacement after a three-months follow-up
Articolo
Data di Pubblicazione:
2022
Citazione:
Frequency domain causal analysis allows the detection of baroreflex control recovery in patients undergoing surgical aortic valve replacement after a three-months follow-up / V. Bari, F. Gelpi, B. Cairo, N. Cornara, B. De Maria, M. Ranucci, A. Porta. - In: COMPUTING IN CARDIOLOGY. - ISSN 2325-8861. - 49:(2022), pp. 1-4. (Intervento presentato al 49. convegno CinC Computing in Cardiology : 4th through 7th September tenutosi a Tampere (Finland) nel 2022) [10.22489/CinC.2022.076].
Abstract:
Surgical aortic valve replacement (SAVR) can impact on cardiovascular control as assessed via the analysis of heart period (HP) and systolic arterial pressure (SAP) variability. Frequency domain causality techniques allow to explore HP-SAP closed-loop relation in the typical frequency bands of the cardiovascular control. A frequency-domain causality analysis was applied to HP and SAP variability acquired from 58 patients (age: 65± 13 yrs, 39 males) before SAVR (PRE), within one-week post-surgery (POST) and after a three-month follow-up (POST3). Analyses were carried out at rest in supine position (REST) and during an active standing test (STAND). Causal squared coherence (K2) analysis was performed along the baroreflex pathway from SAP to HP (K2SAP→HP) and along the mechanical feedforward link from HP to SAP (K2HP→ SAP) in the low frequency (LF, 0.04-0.15 Hz) and high frequency (HF, 0.15- 0.4 Hz) bands. Findings suggested that baroreflex control was depressed just after SAVR but recovered after a three-month follow-up while mechanical feedforward link was not affected. Future studies will be aimed to investigate a longer follow-up and to link results on the occurrence of post-surgery adverse outcomes.
Tipologia IRIS:
01 - Articolo su periodico
Elenco autori:
V. Bari, F. Gelpi, B. Cairo, N. Cornara, B. De Maria, M. Ranucci, A. Porta
Link alla scheda completa: