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1.
Clin Interv Aging ; 19: 695-703, 2024.
Article in English | MEDLINE | ID: mdl-38711477

ABSTRACT

Purpose: In mixed aortic valve disease (MAVD), the results of transcatheter aortic valve replacement (TAVR) are conflicting. There is limited data on the outcomes of TAVR in patients with bicuspid aortic valve (BAV) and MAVD. The objective of this study is to compare outcomes after TAVR in BAV patients with MAVD and predominant aortic stenosis (PAS). Patients and Methods: Patients with BAV who underwent TAVR between January 2016 and April 2023 were included. The primary outcome was device success. The secondary endpoints were periprocedural mortality and other complications as defined by the Valve Academic Research Consortium-3 (VARC-3). Propensity score matching was used to minimize potential confounding. Results: A total of 262 patients were included in this study, 83 of whom had MAVD. The median age was 72 years, and 55.7% were male. The baseline comorbidity risk files were comparable between the two groups. Patients with MAVD had more mitral regurgitation, tricuspid regurgitation and pulmonary hypertension, larger annular and left ventricular outflow tract dimensions, and more severe calcification than PAS. In the unmatched population, MAVD patients had similar device success rate (69.9% vs 79.9%, P=0.075) and 30-day mortality (3.6% vs 3.4%, P=1) compared to PAS. Propensity score matching resulted in 66 patient pairs. Device success rate were still comparable in the matched population. Other clinical outcomes, including stroke, bleeding (type 2-4), major vascular complications, acute kidney injury (stage 2-4) and permanent pacemaker implantation, were comparable between the two groups. Multivariable logistic regression analysis did not show MAVD to be an independent negative predictor of device success. At one year, survival was similar between patients with MAVD and those with PAS. Conclusion: For the bicuspid valve, patients with MAVD had a more challenging anatomy. MAVD patients associated with comparable 30-day clinical outcomes after TAVR compared to PAS patients in patients with BAV.


Subject(s)
Aortic Valve Stenosis , Bicuspid Aortic Valve Disease , Postoperative Complications , Propensity Score , Transcatheter Aortic Valve Replacement , Humans , Male , Female , Aortic Valve Stenosis/surgery , Aged , Bicuspid Aortic Valve Disease/surgery , Aged, 80 and over , Postoperative Complications/epidemiology , Retrospective Studies , Treatment Outcome , Aortic Valve/surgery , Aortic Valve/abnormalities , Middle Aged , Risk Factors , Heart Valve Diseases/surgery
2.
Laeknabladid ; 110(5): 247-253, 2024 May.
Article in Icelandic | MEDLINE | ID: mdl-38713559

ABSTRACT

INTRODUCTION: One of the most serious complications of surgical aortic valve replacement (SAVR) is stroke that can result in increased rates of complications, morbidity and mortality postoperatively. The aim of this study was to investigate incidence, risk factors and short-term outcome in a well defined cohort of SAVR-patients. MATERIALS AND METHOD: A retrospective study on 740 consecutive aortic stenosis patients who underwent SAVR in Iceland 2002-2019. Patients with stroke were compared with non-stroke patients; including preoperative risk factors of cardiovascular disease, echocardiogram-results, rate of early postoperative complications other than stroke and 30 day mortality. RESULTS: Mean age was 71 yrs (34% females) with 57% of the patients receiving stented bioprosthesis, 31% a stentless Freestyle®-valve and 12% a mechanical valve. Mean EuroSCORE-II was 3.6, with a maximum preop-gradient of 70 mmHg and an estimated valvular area of 0.73 cm2. Thirteen (1.8%) patients were diagnosed with stroke where hemiplegia (n=9), loss of consciousness (n=3) and/or aphasia (n=4) were the most common presenting symptoms. In 70% of cases the neurological symptoms resolved or disappeared in the first weeks and months after surgery. Only one patient out of 13 died within 30-days (7.7%). Stroke-patients had significantly lower BMI than non-stroke patients, but other risk factors of cardiovascular diseases, intraoperative factors or the rate of other severe postoperative complications than stroke were similar between groups. Total length of stay was 14 days vs. 10 days median, including 2 vs. 1 days in the ICU, in the stroke and non-stroke-groups, respectively. CONCLUSIONS: The rate of stroke after SAVR was low (1.8%) and in line with other similar studies. Although a severe complication, most patients with perioperative stroke survived 30 days postoperatively and in majority of cases neurological symptoms recovered.


Subject(s)
Aortic Valve Stenosis , Aortic Valve , Heart Valve Prosthesis Implantation , Heart Valve Prosthesis , Stroke , Humans , Female , Aortic Valve Stenosis/surgery , Aortic Valve Stenosis/mortality , Aortic Valve Stenosis/diagnostic imaging , Male , Aged , Risk Factors , Retrospective Studies , Iceland/epidemiology , Heart Valve Prosthesis Implantation/adverse effects , Heart Valve Prosthesis Implantation/mortality , Heart Valve Prosthesis Implantation/instrumentation , Stroke/epidemiology , Stroke/mortality , Stroke/etiology , Incidence , Time Factors , Treatment Outcome , Aortic Valve/surgery , Aortic Valve/diagnostic imaging , Risk Assessment , Aged, 80 and over , Middle Aged
5.
Sci Rep ; 14(1): 10409, 2024 05 06.
Article in English | MEDLINE | ID: mdl-38710782

ABSTRACT

In transcatheter aortic valve implantation (TAVI), final device position may be affected by device interaction with the whole aortic landing zone (LZ) extending to ascending aorta. We investigated the impact of aortic LZ curvature and angulation on TAVI implantation depth, comparing short-frame balloon-expanding (BE) and long-frame self-expanding (SE) devices. Patients (n = 202) treated with BE or SE devices were matched based on one-to-one propensity score. Primary endpoint was the mismatch between the intended (HPre) and the final (HPost) implantation depth. LZ curvature and angulation were calculated based on the aortic centerline trajectory available from pre-TAVI computed tomography. Total LZ curvature ( k L Z , t o t ) and LZ angulation distal to aortic annulus ( α L Z , D i s t a l ) were greater in the SE compared to the BE group (P < 0.001 for both). In the BE group, HPost was significantly higher than HPre at both cusps (P < 0.001). In the SE group, HPost was significantly deeper than HPre only at the left coronary cusp (P = 0.013). At multivariate analysis, α L Z , D i s t a l was the only independent predictor (OR = 1.11, P = 0.002) of deeper final implantation depth with a cut-off value of 17.8°. Aortic LZ curvature and angulation significantly affected final TAVI implantation depth, especially in high stent-frame SE devices reporting, upon complete release, deeper implantation depth with respect to the intended one.


Subject(s)
Aortic Valve Stenosis , Aortic Valve , Transcatheter Aortic Valve Replacement , Transcatheter Aortic Valve Replacement/methods , Humans , Male , Female , Aged, 80 and over , Aged , Aortic Valve/surgery , Aortic Valve/diagnostic imaging , Aortic Valve Stenosis/surgery , Tomography, X-Ray Computed , Aorta/diagnostic imaging , Aorta/surgery , Treatment Outcome , Heart Valve Prosthesis , Retrospective Studies
6.
Sci Rep ; 14(1): 12222, 2024 May 28.
Article in English | MEDLINE | ID: mdl-38806601

ABSTRACT

Calcification of aortic valve leaflets is a growing mortality threat for the 18 million human lives claimed globally each year by heart disease. Extensive research has focused on the cellular and molecular pathophysiology associated with calcification, yet the detailed composition, structure, distribution and etiological history of mineral deposition remains unknown. Here transdisciplinary geology, biology and medicine (GeoBioMed) approaches prove that leaflet calcification is driven by amorphous calcium phosphate (ACP), ACP at the threshold of transformation toward hydroxyapatite (HAP) and cholesterol biomineralization. A paragenetic sequence of events is observed that includes: (1) original formation of unaltered leaflet tissues: (2) individual and coalescing 100's nm- to 1 µm-scale ACP spherules and cholesterol crystals biomineralizing collagen fibers and smooth muscle cell myofilaments; (3) osteopontin coatings that stabilize ACP and collagen containment of nodules preventing exposure to the solution chemistry and water content of pumping blood, which combine to slow transformation to HAP; (4) mm-scale nodule growth via ACP spherule coalescence, diagenetic incorporation of altered collagen and aggregation with other ACP nodules; and (5) leaflet diastole and systole flexure causing nodules to twist, fold their encasing collagen fibers and increase stiffness. These in vivo mechanisms combine to slow leaflet calcification and establish previously unexplored hypotheses for testing novel drug therapies and clinical interventions as viable alternatives to current reliance on surgical/percutaneous valve implants.


Subject(s)
Aortic Valve , Calcinosis , Calcium Phosphates , Collagen , Osteopontin , Calcium Phosphates/metabolism , Humans , Aortic Valve/metabolism , Aortic Valve/pathology , Osteopontin/metabolism , Calcinosis/metabolism , Calcinosis/prevention & control , Collagen/metabolism , Durapatite/metabolism , Durapatite/chemistry , Aortic Valve Stenosis/metabolism , Aortic Valve Stenosis/pathology , Cholesterol/metabolism
7.
Circ Cardiovasc Imaging ; 17(5): e016267, 2024 May.
Article in English | MEDLINE | ID: mdl-38771899

ABSTRACT

BACKGROUND: Aortic valve calcification (AVC) indexation to the aortic annulus (AA) area measured by Doppler echocardiography (AVCdEcho) provides powerful prognostic information in patients with aortic stenosis (AS). However, the indexation by AA measured by multidetector computed tomography (AVCdCT) has never been evaluated. The aim of this study was to compare AVC, AVCdCT, and AVCdEcho with regard to hemodynamic correlations and clinical outcomes in patients with AS. METHODS: Data from 889 patients, mainly White, with calcific AS who underwent Doppler echocardiography and multidetector computed tomography within the same episode of care were retrospectively analyzed. AA was measured both by Doppler echocardiography and multidetector computed tomography. AVCdCT severity thresholds were established using receiver operating characteristic curve analyses in men and women separately. The primary end point was the occurrence of all-cause mortality. RESULTS: Correlations between gradient/velocity and AVCd were stronger (both P≤0.005) using AVCdCT (r=0.68, P<0.001 and r=0.66, P<0.001) than AVC (r=0.61, P<0.001 and r=0.60, P<0.001) or AVCdEcho (r=0.61, P<0.001 and r=0.59, P<0.001). AVCdCT thresholds for the identification of severe AS were 334 Agatston units (AU)/cm2 for women and 467 AU/cm2 for men. On a median follow-up of 6.62 (6.19-9.69) years, AVCdCT ratio was superior to AVC ratio and AVCdEcho ratio to predict all-cause mortality in multivariate analyses (hazard ratio [HR], 1.59 [95% CI, 1.26-2.00]; P<0.001 versus HR, 1.53 [95% CI, 1.11-1.65]; P=0.003 versus HR, 1.27 [95% CI, 1.11-1.46]; P<0.001; all likelihood test P≤0.004). AVCdCT ratio was superior to AVC ratio and AVCdEcho ratio to predict survival under medical treatment in multivariate analyses (HR, 1.80 [95% CI, 1.27-1.58]; P<0.001 compared with HR, 1.55 [95% CI, 1.13-2.10]; P=0.007; HR, 1.28 [95% CI, 1.03-1.57]; P=0.01; all likelihood test P<0.03). AVCdCT ratio predicts mortality in all subgroups of patients with AS. CONCLUSIONS: AVCdCT appears to be equivalent or superior to AVC and AVCdEcho to assess AS severity and predict all-cause mortality. Thus, it should be used to evaluate AS severity in patients with nonconclusive echocardiographic evaluations with or without low-flow status. AVCdCT thresholds of 300 AU/cm2 for women and 500 AU/cm2 for men seem to be appropriate to identify severe AS. Further studies are needed to validate these thresholds, especially in diverse populations.


Subject(s)
Aortic Valve Stenosis , Aortic Valve , Calcinosis , Echocardiography, Doppler , Multidetector Computed Tomography , Predictive Value of Tests , Severity of Illness Index , Humans , Aortic Valve Stenosis/diagnostic imaging , Aortic Valve Stenosis/physiopathology , Aortic Valve Stenosis/mortality , Male , Female , Multidetector Computed Tomography/methods , Aortic Valve/diagnostic imaging , Aortic Valve/physiopathology , Aortic Valve/pathology , Retrospective Studies , Aged , Calcinosis/diagnostic imaging , Calcinosis/physiopathology , Calcinosis/mortality , Echocardiography, Doppler/methods , Aged, 80 and over , Prognosis , ROC Curve , Hemodynamics , Middle Aged , Risk Factors
10.
PLoS One ; 19(5): e0302378, 2024.
Article in English | MEDLINE | ID: mdl-38771808

ABSTRACT

BACKGROUND: Guidelines recommend shared decision making when choosing treatment for severe aortic stenosis but implementation has lagged. We assessed the feasibility and impact of a novel decision aid for severe aortic stenosis at point-of-care. METHODS: This prospective multi-site pilot cohort study included adults with severe aortic stenosis and their clinicians. Patients were referred by their heart team when scheduled to discuss treatment options. Outcomes included shared decision-making processes, communication quality, decision-making confidence, decisional conflict, knowledge, stage of decision making, decision quality, and perceptions of the tool. Patients were assessed at baseline (T0), after using the intervention (T1), and after the clinical encounter (T2); clinicians were assessed at T2. Before the encounter, patients reviewed the intervention, Aortic Valve Improved Treatment Approaches (AVITA), an interactive, online decision aid. AVITA presents options, frames decisions, clarifies patient goals and values, and generates a summary to use with clinicians during the encounter. RESULTS: 30 patients (9 women [30.0%]; mean [SD] age 70.4 years [11.0]) and 14 clinicians (4 women [28.6%], 7 cardiothoracic surgeons [50%]) comprised 28 clinical encounters Most patients [85.7%] and clinicians [84.6%] endorsed AVITA. Patients reported AVITA easy to use [89.3%] and helped them choose treatment [95.5%]. Clinicians reported the AVITA summary helped them understand their patients' values [80.8%] and make values-aligned recommendations [61.5%]. Patient knowledge significantly improved at T1 and T2 (p = 0.004). Decisional conflict, decision-making stage, and decision quality improved at T2 (p = 0.0001, 0.0005, and 0.083, respectively). Most patients [60%] changed treatment preference between T0 and T2. Initial treatment preferences were associated with low knowledge, high decisional conflict, and poor decision quality; final preferences were associated with high knowledge, low conflict, and high quality. CONCLUSIONS: AVITA was endorsed by patients and clinicians, easy to use, improved shared decision-making quality and helped patients and clinicians arrive at a treatment that reflected patients' values. TRIAL REGISTRATION: Trial ID: NCT04755426, Clinicaltrials.gov/ct2/show/NCT04755426.


Subject(s)
Aortic Valve Stenosis , Decision Making, Shared , Decision Support Techniques , Feasibility Studies , Patient Preference , Humans , Aortic Valve Stenosis/therapy , Aortic Valve Stenosis/surgery , Female , Male , Pilot Projects , Aged , Middle Aged , Prospective Studies , Aged, 80 and over , Patient Participation , Physicians/psychology , Physician-Patient Relations , Decision Making
11.
Circ Cardiovasc Imaging ; 17(5): e015996, 2024 May.
Article in English | MEDLINE | ID: mdl-38771906

ABSTRACT

BACKGROUND: Extracellular volume fraction (ECV) is a marker for myocardial fibrosis and infiltration, can be quantified using cardiac computed tomography (ECVCT), and has prognostic utility in several diseases. This study aims to map out regional differences in ECVCT to obtain greater insights into the pathophysiological mechanisms of ECV expansion and its clinical implications. METHODS: Three prospective cohorts were included: patients with aortic stenosis (AS) and coexisting AS and transthyretin cardiac amyloidosis were referred for a transcatheter aortic valve replacement and had ECG-gated CT angiography and Technetium-99m-labelled 3,3-diphosphono-1,2-propanodicarboxylic acid scintigraphy to differentiate between the 2 cohorts. Controls had CT angiography and cardiac magnetic resonance demonstrating no significant coronary artery disease or infarction. Global and regional ECVCT was analyzed, and its association with mortality was assessed for patients with AS. RESULTS: In 199 patients, controls (n=65; 66% male), AS (n=115), and coexisting AS and transthyretin cardiac amyloidosis (n=19) had a global ECVCT of 26.1 (25.0-27.8%) versus 29.1 (27.5-31.1%) versus 37.4 (32.5-46.6%), respectively; P<0.001. Across cohorts, ECVCT was higher at the base (versus apex), the inferoseptum (versus anterolateral wall), and the subendocardium (versus subepicardium); P<0.05 for all. Among patients with AS, epicardial ECVCT, rather than any other regional value or global ECVCT, was the strongest predictor of mortality at a median of 3.9 (max 6.3) years (adjusted hazard ratio, 1.21 [95% CI, 1.08-1.36]; P=0.002). CONCLUSIONS: Regional differences in ECVCT suggest a predilection for fibrosis and amyloid infiltration at the base, subendocardium, inferior wall, and septum more than the anterior and lateral myocardium. ECVCT can predict long-term mortality with the subepicardium demonstrating the strongest discriminatory power. REGISTRATION: URL: https://www.clinicaltrials.gov; Unique identifiers: NCT03029026 and NCT03094143.


Subject(s)
Amyloid Neuropathies, Familial , Aortic Valve Stenosis , Computed Tomography Angiography , Fibrosis , Myocardium , Humans , Aortic Valve Stenosis/diagnostic imaging , Aortic Valve Stenosis/physiopathology , Aortic Valve Stenosis/complications , Aortic Valve Stenosis/mortality , Male , Female , Aged , Prospective Studies , Computed Tomography Angiography/methods , Aged, 80 and over , Myocardium/pathology , Amyloid Neuropathies, Familial/diagnostic imaging , Amyloid Neuropathies, Familial/complications , Amyloid Neuropathies, Familial/mortality , Predictive Value of Tests , Prognosis , Coronary Angiography/methods , Transcatheter Aortic Valve Replacement , Aortic Valve/diagnostic imaging , Aortic Valve/pathology , Cardiomyopathies/diagnostic imaging , Cardiomyopathies/physiopathology , Middle Aged
12.
A A Pract ; 18(6): e01790, 2024 Jun 01.
Article in English | MEDLINE | ID: mdl-38785382

ABSTRACT

This case report describes the rare occurrence of a ventricular septal defect (VSD) after transcatheter aortic valve implantation (TAVI) in an 88-year-old male patient with aortic stenosis and other comorbidities. Initially asymptomatic, the patient was discharged but readmitted 2 weeks later with decompensated heart failure. Transesophageal echocardiography (TEE) revealed an increase in the size of the VSD and right ventricular dilation. Surgical intervention was chosen over percutaneous closure due to the patient's condition. A bovine pericardial patch was successfully used for repair. This case highlights the importance of vigilant post-TAVI monitoring and individualized treatment for TAVI-related complications.


Subject(s)
Aortic Valve Stenosis , Heart Septal Defects, Ventricular , Transcatheter Aortic Valve Replacement , Humans , Male , Transcatheter Aortic Valve Replacement/adverse effects , Aged, 80 and over , Heart Septal Defects, Ventricular/surgery , Aortic Valve Stenosis/surgery , Echocardiography, Transesophageal , Cattle , Animals , Treatment Outcome
13.
Echocardiography ; 41(5): e15829, 2024 May.
Article in English | MEDLINE | ID: mdl-38787527

ABSTRACT

PURPOSE: Aortic stenosis (AS) is a common valvular heart disease with high morbidity and mortality. Recently, the association between peak atrial longitudinal strain (PALS) and AS clinical outcomes has been identified. This systematic review evaluates the prognostic value of PALS for adverse events in AS. METHODS: We performed a systematic literature review to identify clinical studies that evaluated Speckle-Tracking Echocardiography (STE)-derived PALS to predict adverse outcomes in patients with AS. We excluded studies that compared echocardiography to computed tomography and studies that focused on diseases other than AS. RESULTS: We included 18 studies reporting on 2660 patients. Patients with symptomatic AS had decreased PALS when compared to patients with asymptomatic AS. Patients with AS who had adverse events had decreased PALS when compared to patients with AS with no events. Each unit increase of PALS was independently associated with decreased risk for the primary endpoint. PALS cut-off values were associated with increased risk for the primary endpoint. CONCLUSION: This systematic review suggests PALS as an independent predictor for cardiovascular events in patients with AS and highlights the importance of evaluating LA mechanics for AS prognosis.


Subject(s)
Aortic Valve Stenosis , Echocardiography , Heart Atria , Humans , Aortic Valve Stenosis/physiopathology , Aortic Valve Stenosis/complications , Aortic Valve Stenosis/diagnostic imaging , Prognosis , Echocardiography/methods , Heart Atria/diagnostic imaging , Heart Atria/physiopathology , Female
14.
Open Heart ; 11(1)2024 May 20.
Article in English | MEDLINE | ID: mdl-38769066

ABSTRACT

OBJECTIVE: Patients with moderate aortic stenosis (AS) exhibit high morbidity and mortality. Limited evidence exists on the role of aortic valve replacement (AVR) in this patient population. To investigate the benefit of AVR in moderate AS on survival and left ventricular function. METHODS: In a retrospective cohort study, patients with moderate AS between 2008 and 2016 were selected from the Cleveland Clinic echocardiography database and followed until 2018. Patients were classified as receiving AVR or managed medically (clinical surveillance). All-cause and cardiovascular mortality were assessed by survival analyses. Temporal haemodynamic and structural changes were assessed with longitudinal analyses using linear mixed effects models. RESULTS: We included 1421 patients (mean age, 75.3±5.4 years and 39.9% women) followed over a median duration of 6 years. Patients in the AVR group had lower risk of all-cause (adjusted HR (aHR)=0.51, 95% CI: 0.34 to 0.77; p=0.001) and cardiovascular mortality (aHR=0.50, 95% CI: 0.31 to 0.80; p=0.004) compared with those in the clinical surveillance group irrespective of sex, receipt of other open-heart surgeries and underlying malignancy. These findings were seen only in those with preserved left ventricular ejection fraction (LVEF) ≥50%. Further, patients in the AVR group had a significant trend towards an increase in LVEF and a decrease in right ventricular systolic pressure compared with those in the clinical surveillance group. CONCLUSIONS: In patients with moderate AS, AVR was associated with favourable clinical outcomes and left ventricular remodelling.


Subject(s)
Aortic Valve Stenosis , Aortic Valve , Heart Valve Prosthesis Implantation , Ventricular Function, Left , Humans , Aortic Valve Stenosis/surgery , Aortic Valve Stenosis/physiopathology , Aortic Valve Stenosis/mortality , Aortic Valve Stenosis/diagnosis , Female , Male , Retrospective Studies , Aged , Heart Valve Prosthesis Implantation/methods , Ventricular Function, Left/physiology , Aortic Valve/surgery , Aortic Valve/diagnostic imaging , Aortic Valve/physiopathology , Treatment Outcome , Time Factors , Severity of Illness Index , Follow-Up Studies , Risk Factors , Echocardiography/methods , Aged, 80 and over , Survival Rate/trends , Risk Assessment/methods , Stroke Volume/physiology
15.
Circ Cardiovasc Imaging ; 17(5): e016276, 2024 May.
Article in English | MEDLINE | ID: mdl-38716653

ABSTRACT

BACKGROUND: Quantification of left atrial (LA) conduit function and its contribution to left ventricular (LV) filling is challenging because it requires simultaneous measurements of both LA and LV volumes. The functional relationship between LA conduit function and the severity of diastolic dysfunction remains controversial. We studied the role of LA conduit function in maintaining LV filling in advanced diastolic dysfunction. METHODS: We performed volumetric and flow analyses of LA function across the spectrum of LV diastolic dysfunction, derived from a set of consecutive patients undergoing multiphasic cardiac computed tomography scanning (n=489). From LA and LV time-volume curves, we calculated 3 volumetric components: (1) early passive emptying volume; (2) late active (booster) volume; and (3) conduit volume. Results were prospectively validated on a group of patients with severe aortic stenosis (n=110). RESULTS: The early passive filling progressively decreased with worsening diastolic function (P<0.001). The atrial booster contribution to stroke volume modestly increases with impaired relaxation (P=0.021) and declines with more advanced diastolic function (P<0.001), thus failing to compensate for the reduction in early filling. The conduit volume increased progressively (P<0.001), accounting for 75% of stroke volume (interquartile range, 63-81%) with a restrictive filling pattern, compensating for the reduction in both early and booster functions. Similar results were obtained in patients with severe aortic stenosis. The pulmonary artery systolic pressure increased in a near-linear fashion when the conduit contribution to stroke volume increased above 60%. Maximal conduit flow rate strongly correlated with mitral E-wave velocity (r=0.71; P<0.0001), indicating that the increase in mitral E wave in diastolic dysfunction represents the increased conduit flow. CONCLUSIONS: An increase in conduit volume contribution to stroke volume represents a compensatory mechanism to maintain LV filling in advanced diastolic dysfunction. The increase in conduit volume despite increasing LV diastolic pressures is accomplished by an increase in pulmonary venous pressure.


Subject(s)
Aortic Valve Stenosis , Atrial Function, Left , Diastole , Stroke Volume , Ventricular Dysfunction, Left , Ventricular Function, Left , Humans , Male , Female , Atrial Function, Left/physiology , Aged , Ventricular Dysfunction, Left/physiopathology , Ventricular Dysfunction, Left/diagnostic imaging , Ventricular Function, Left/physiology , Aortic Valve Stenosis/physiopathology , Aortic Valve Stenosis/diagnostic imaging , Prospective Studies , Stroke Volume/physiology , Severity of Illness Index , Heart Atria/physiopathology , Heart Atria/diagnostic imaging , Middle Aged , Aged, 80 and over , Predictive Value of Tests
16.
Curr Probl Cardiol ; 49(7): 102629, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38723797

ABSTRACT

Transcatheter aortic valve implantation (TAVI) is a promising treatment strategy for high-risk surgical patients, and trials investigating its effectiveness in intermediate- and lower-risk patients are underway. Data are inconsistent regarding the superiority of using local anesthesia with conscious sedation alone versus general anesthesia (GA) as the anesthesia management of choice for elderly frail patients. Historically, TAVI procedure is performed under GA with transesophageal echocardiography. This approach gives operators stable hemodynamic control of the patient and helps decrease the risk of many of the operation's documented complications, including paravalvular leak and valve malpositioning. However, some studies have criticized the dependence of GA on mechanical ventilation and an increased need for catecholamine and/or vasopressor agents. Alternatively, to further capitalize on the minimally invasive nature of TAVI, some authors have advocated for the use of local anesthesia (LA) and/or conscious sedation approach, which would decrease procedure time, length of hospital stay, and minimize the need for postoperative inotropes. Ultimately and at present, the choice of anesthesia is based on the personal experience and preference of the Heart Team involved in the TAVI procedure, which will dictate the best possible management plan for each patient. Many patients currently undergoing TAVI are elderly and have multiple comorbidities, making their care complex. Anesthetic care is shifting from GA to sedation and regional block, but life-threatening complications are still relatively common and safety during planning and conduct of these procedures by the heart team, with the anesthesiologist at the center, is paramount.


Subject(s)
Anesthesia, General , Anesthesia, Local , Aortic Valve Stenosis , Randomized Controlled Trials as Topic , Transcatheter Aortic Valve Replacement , Humans , Transcatheter Aortic Valve Replacement/methods , Anesthesia, General/methods , Anesthesia, Local/methods , Aortic Valve Stenosis/surgery , Propensity Score
17.
Curr Probl Cardiol ; 49(7): 102631, 2024 Jul.
Article in English | MEDLINE | ID: mdl-38729278

ABSTRACT

Aortic stenosis (AS) is very common in mid-aged and elderly patients, and it has been reported to have a negative impact on both short and long-term survival with a high mortality rate. The current study identified methods of diagnosis, incidence, and causes of AS, pathogenesis, intervention and management and future perspectives of Asymptomatic and Symptomatic Aortic stenosis. A systematic literature search was conducted using PubMed, Scopus and CINAHL, using the Mesh terms and key words "Aortic stenosis", "diagnostic criteria", "pathogenesis", "incidence and causes of AS" and" intervention and management strategies". Studies were retained for review after meeting strict inclusion criteria that included studies evaluating Asymptomatic and Symptomatic AS. Studies were excluded if duplicate publication, overlap of patients, subgroup studies of a main study, lack of data on AS severity, case reports and letters to editors. Forty-five articles were selected for inclusion. Incidence of AS across the studies ranged from 3 % to 7 %. Many factors have been associated with incidence and increased risk of AS, highest incidence of AS was described after aortic valve calcification, rheumatic heart disease, degenerative aortic valve disease, bicuspid aortic valve and other factors. AS is common and can be predicted by aortic root calcification volume, rheumatic heart disease, degenerative aortic valve disease, bicuspid aortic valve. Intervention and management for AS patients is a complex decision that takes into consideration multiple factors. On the other hand, there is not enough progress in preventive pharmacotherapy to slow the progression of AS.


Subject(s)
Aortic Valve Stenosis , Asymptomatic Diseases , Humans , Aortic Valve Stenosis/diagnosis , Aortic Valve Stenosis/epidemiology , Aortic Valve Stenosis/etiology , Aortic Valve Stenosis/therapy , Asymptomatic Diseases/therapy , Incidence , Aortic Valve/pathology , Risk Factors , Disease Management
18.
Sci Rep ; 14(1): 10902, 2024 05 13.
Article in English | MEDLINE | ID: mdl-38740898

ABSTRACT

Calcification of the aortic valve (CAVDS) is a major cause of aortic stenosis (AS) leading to loss of valve function which requires the substitution by surgical aortic valve replacement (SAVR) or transcatheter aortic valve intervention (TAVI). These procedures are associated with high post-intervention mortality, then the corresponding risk assessment is relevant from a clinical standpoint. This study compares the traditional Cox Proportional Hazard (CPH) against Machine Learning (ML) based methods, such as Deep Learning Survival (DeepSurv) and Random Survival Forest (RSF), to identify variables able to estimate the risk of death one year after the intervention, in patients undergoing either to SAVR or TAVI. We found that with all three approaches the combination of six variables, named albumin, age, BMI, glucose, hypertension, and clonal hemopoiesis of indeterminate potential (CHIP), allows for predicting mortality with a c-index of approximately 80 % . Importantly, we found that the ML models have a better prediction capability, making them as effective for statistical analysis in medicine as most state-of-the-art approaches, with the additional advantage that they may expose non-linear relationships. This study aims to improve the early identification of patients at higher risk of death, who could then benefit from a more appropriate therapeutic intervention.


Subject(s)
Aortic Valve Stenosis , Aortic Valve , Calcinosis , Deep Learning , Humans , Aortic Valve/surgery , Aortic Valve/pathology , Calcinosis/surgery , Calcinosis/mortality , Female , Male , Aged , Aortic Valve Stenosis/surgery , Aortic Valve Stenosis/mortality , Transcatheter Aortic Valve Replacement/mortality , Aged, 80 and over , Survival Analysis , Risk Factors , Proportional Hazards Models , Risk Assessment/methods , Heart Valve Prosthesis Implantation/mortality , Heart Valve Prosthesis Implantation/methods , Middle Aged
19.
Eur J Cardiothorac Surg ; 65(5)2024 May 03.
Article in English | MEDLINE | ID: mdl-38730543

ABSTRACT

OBJECTIVES: The aim of this study was to describe trends and outcomes for patients undergoing surgical aortic valve replacement (SAVR) in the Netherlands. METHODS: The Netherlands Heart Registration database was used to report the number and outcomes of isolated, primary SAVR procedures performed from 2007 to 2018 in adult patients. RESULTS: A total of 17 142 procedures were included, of which 77.9% were performed using a biological prosthesis and 21.0% with a mechanical prosthesis. Median logistic EuroSCORE I decreased from 4.6 [interquartile range (IQR) 2.4-7.7] to 4.0 (IQR 2.6-6.0). The 120-day mortality decreased from 3.3% in 2007 to 0.7% in 2018. The median duration of follow-up was 76 months (IQR 53-111). Ten-year survival, when adjusted for age, EuroSCORE I and body surface area, was 72.4%, and adjusted 10-year freedom from reinvervention was 98.1%. Additional analysis for patients under the age of 60 showed no difference between patients treated with a biological or mechanical prosthesis in adjusted 10-year survival, 89.7% vs 91.9±%, respectively (P = 0.25), but a significant difference in adjusted 10-year freedom from reintervention, 90.0±% vs 95.9%, respectively (P < 0.01). CONCLUSIONS: Between 2007 and 2018, age and risk profile of patients undergoing SAVR decreased, especially for patients treated with a biological prosthesis. The 120-day mortality decreased over time. Patients undergoing SAVR nowadays have a risk of 120-day mortality of <1% and 10-year freedom from valve-related reintervention of >95%.


Subject(s)
Aortic Valve , Heart Valve Prosthesis Implantation , Humans , Male , Netherlands/epidemiology , Female , Aged , Aortic Valve/surgery , Heart Valve Prosthesis Implantation/trends , Heart Valve Prosthesis Implantation/statistics & numerical data , Heart Valve Prosthesis Implantation/mortality , Heart Valve Prosthesis Implantation/methods , Middle Aged , Treatment Outcome , Heart Valve Prosthesis/trends , Aged, 80 and over , Registries , Aortic Valve Stenosis/surgery , Aortic Valve Stenosis/mortality , Risk Factors
20.
Port J Card Thorac Vasc Surg ; 31(1): 12-16, 2024 May 13.
Article in English | MEDLINE | ID: mdl-38743522

ABSTRACT

There has been a worldwide rapid adoption of transcatheter aortic valve replacement (TAVR) as an alternative to surgical aortic valve replacement (SAVR) for patients with severe aortic stenosis. Currently, more TAVR explants with SAVRs are performed than TAVR-in TAV. TAVR explantation is a technically hazardous procedure mainly due to significant aortic neo-endothelialization which incorporates the TAVR valve. Surgical techniques for TAVR explantation are not well established and surgeon experience at present is limited. In this manuscript, we describe our technique for surgical explantation of transcatheter aortic bioprosthesis. Familiarity with the procedure and its clinical implications is essential for all cardiac surgeons.


Subject(s)
Aortic Valve Stenosis , Bioprosthesis , Device Removal , Heart Valve Prosthesis , Transcatheter Aortic Valve Replacement , Humans , Aortic Valve/surgery , Aortic Valve/pathology , Aortic Valve Stenosis/surgery , Bioprosthesis/adverse effects , Device Removal/methods , Heart Valve Prosthesis/adverse effects , Transcatheter Aortic Valve Replacement/methods , Transcatheter Aortic Valve Replacement/adverse effects , Transcatheter Aortic Valve Replacement/instrumentation
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