Implementation of processes of care to support transcatheter aortic valve replacement programs

Temporal Changes in Quality Indicators in a Regional System of Care After Surgical and Transcatheter Aortic Valve Replacement

Background

Historically, quality-of-care monitoring was performed separately for transcatheter and surgical aortic valve replacement (TAVR, SAVR). Using consensus indicators, we provide a global report on the quality of care for treatment of aortic stenosis across the highest-volume treatments: transfemoral (TF) TAVR, isolated SAVR, and SAVR combined with coronary artery bypass graft.

Methods

Retrospective observational cohort study of consecutive patients in a regional system of care. Primary endpoint was 30-day and 1-year mortality (2015-2019). Secondary endpoints included rate of new pacemaker, rate of readmission, and length of stay (2012-2019). Following multivariable logistic regressions, we developed mortality case-mix adjustment models to report risk estimates.

Results

The proportion of patients receiving TAVR grew from 32% to 53% (2015-2019). Those receiving TF TAVR were significantly older, with higher rates of comorbidities. Observed 30-day and 1-year all-cause mortality after TF TAVR decreased from 3.1% to 0.6% (P = 0.03), and 13.6% to 6.6% (P = 0.09), respectively; surgical mortality rates for isolated SAVR and SAVR combined with coronary artery bypass graft were low and did not change significantly over time, ranging from 0.3% to 1.4% and from 0.9% to 3.4%, respectively at 30 days, and from 0.9% to 3.4% and from 4.7% to 6.7 at 1 year. In the TF TAVR cohort, the observed vs expected ratio for 30-day and 1-year mortality decreased significantly from 1.9 (95% confidence interval [CI] 0.9, 3.5) to 0.3 (95% CI 0.1, 0.8), and from 1.3 (95% CI 0.9, 1.7) to 0.7 (95% CI 0.5, 0.99), respectively; no change occurred in risk-adjusted surgical mortality.

Conclusions

Consensus quality indicators provide unique insights on the quality of care for patients receiving treatment for aortic stenosis.

Is the outcome of elective vs non-elective patients undergoing transcatheter aortic valve implantation different? Results of a single-centre, observational assessment of outcomes at a large university clinic

BACKGROUND

Transcatheter aortic valve implantation (TAVI) can either be conducted as an elective (scheduled in advance) or a non-elective procedure performed during an unplanned hospital admission. The objective of this study was to compare the outcomes of elective and non-elective TAVI patients.

METHODS

This single-centre study included 512 patients undergoing transfemoral TAVI between October 2018 and December 2020; 378 (73.8%) were admitted for elective TAVI, 134 (26.2%) underwent a non-elective procedure. Our TAVI programme entails an optimized fast-track concept aimed at minimizing the total length of stay to ≤ 5 days for elective patients which in the German healthcare system is currently defined as the minimal time period to safely perform TAVI. Clinical characteristics and survival rates at 30 days and 1 year were analysed.

RESULTS

Patients who underwent non-elective TAVI had a significantly higher comorbidity burden. Median duration from admission to discharge was 6 days (elective group 6 days versus non-elective group 15 days; p < 0.001), including a median postprocedural stay of 5 days (elective 4 days versus non-elective 7 days; p < 0.001). All-cause mortality at 30 days was 1.1% for the elective group and 3.7% for non-elective patients (p = 0.030). At 1 year, all-cause mortality among elective TAVI patients was disproportionately lower than in non-elective patients (5.0% versus 18.7%, p < 0.001). In the elective group, 54.5% of patients could not be discharged early due to comorbidities or procedural complications. Factors associated with a failure of achieving a total length of stay of ≤ 5 days comprised frailty syndrome, renal impairment as well as new permanent pacemaker implantation, new bundle branch block or atrial fibrillation, life-threatening bleeding, and the use of self-expanding valves. After multivariate adjustment, new permanent pacemaker implantation (odds ratio 6.44; 95% CI 2.59-16.00), life-threatening bleeding (odds ratio 4.19; 95% confidence interval 1.82-9.66) and frailty syndrome (odds ratio 5.15; 95% confidence interval 2.40-11.09; all p < 0.001, respectively) were confirmed as significant factors.

CONCLUSIONS

While non-elective patients had acceptable periprocedural outcomes, mortality rates at 1 year were significantly higher compared to elective patients. Approximately only half of elective patients could be discharged early. Improvements in periprocedural care, follow-up strategies and optimized treatment of both elective and non-elective TAVI patients are needed.

The COORDINATE Pilot Study: Impact of a Transcatheter Aortic Valve Coordinator Program on Hospital and Patient Outcomes

The transcatheter aortic valve implantation (TAVI) treatment pathway is complex, leading to procedure-related delays. Dedicated TAVI coordinators can improve pathway efficiency. COORDINATE was a pilot observational prospective registry at three German centers that enrolled consecutive elective patients with severe aortic stenosis undergoing TAVI to investigate the impact a TAVI coordinator program. Pathway parameters and clinical outcomes were assessed before (control group) and after TAVI coordinator program implementation (intervention phase). The number of repeated diagnostics remained unchanged after implementation. Patients with separate hospitalizations for screening and TAVI had long delays, which increased after implementation (65 days pre- vs. 103 days post-implementation); hospitalizations combining these were more efficient. The mean time between TAVI and hospital discharge remained constant. Nurse (p = 0.001) and medical technician (p = 0.008) working hours decreased. Patient satisfaction increased, and more consistent/intensive contact between patients and staff was reported. TAVI coordinators provided more post-TAVI support, including discharge management. No adverse effects on post-procedure or 30-day outcomes were seen. This pilot suggests that TAVI coordinator programs may improve aspects of the TAVI pathway, including post-TAVI care and patient satisfaction, without compromising safety. These findings will be further investigated in the BENCHMARK registry.

Temporal Changes in Mortality After Transcatheter and Surgical Aortic Valve Replacement: Retrospective Analysis of US Medicare Patients (2012-2019)

Background

The treatment of aortic stenosis is evolving rapidly. Pace of change in the care of patients undergoing transcatheter aortic valve replacement (TAVR) and surgical aortic valve replacement (SAVR) differs. We sought to determine differences in temporal changes in 30‐day mortality, 30‐day readmission, and length of stay after TAVR and SAVR.

Methods and Results

We conducted a retrospective cohort study of patients treated in the United States between 2012 and 2019 using data from the Medicare Data Set Analytic File 100% Fee for Service database. We included consecutive patients enrolled in Medicare Parts A and B and aged ≥65 years who had SAVR or transfemoral TAVR. We defined 3 study cohorts, including all SAVR, isolated SAVR (without concomitant procedures), and elective isolated SAVR and TAVR. The primary end point was 30‐day mortality; secondary end points were 30‐day readmission and length of stay. Statistical models controlled for patient demographics, frailty measured by the Hospital Frailty Risk Score, and comorbidities measured by the Elixhauser Comorbidity Index (ECI). Cox proportional hazard models were developed with TAVR versus SAVR as the main covariates with a 2‐way interaction term with index year. We repeated these analyses restricted to full aortic valve replacement hospitals offering both SAVR and TAVR. The main study cohort included 245 269 patients with SAVR and 188 580 patients with TAVR, with mean±SD ages 74.3±6.0 years and 80.7±6.9 years, respectively, and 36.5% and 46.2% female patients, respectively. Patients with TAVR had higher ECI scores (6.4±3.6 versus 4.4±3) and were more frail (55.4% versus 33.5%). Total aortic valve replacement volumes increased 61% during the 7‐year span; TAVR volumes surpassed SAVR in 2017. The magnitude of mortality benefit associated with TAVR increased until 2016 in the main cohort (2012: hazard ratio [HR], 0.76 [95% CI, 0.67–0.86]; 2016: HR, 0.39 [95% CI, 0.36–0.43]); although TAVR continued to have lower mortality rates from 2017 to 2019, the magnitude of benefit over SAVR was attenuated. A similar pattern was seen with readmission, with a lower risk of readmission from 2012 to 2016 for patients with TAVR (2012: HR, 0.68 [95% CI, 0.63–0.73]; 2016: HR, 0.43 [95% CI, 0.41–0.45]) followed by a lesser difference from 2017 to 2019. Year over year, TAVR was associated with increasingly shorter lengths of stay compared with SAVR (2012: HR, 1.91 [95% CI, 1.84–1.98]; 2019: HR, 5.34 [95% CI, 5.22–5.45]). These results were consistent in full aortic valve replacement hospitals.

Conclusions

The rate of improvement in TAVR outpaced SAVR until 2016, with the recent presence of U‐shaped phenomena suggesting a narrowing gap between outcomes. Future longitudinal research is needed to determine the long‐term implications of lowering risk profiles across treatment options to guide case selection and clinical care.

Can you see frailty? An exploratory study of the use of a patient photograph in the transcatheter aortic valve implantation programme

BACKGROUND

Frailty is an important consideration in the assessment of transcatheter aortic valve implantation patients. The documentation of a patient photograph to augment the objective measurement of frailty has been adopted by some transcatheter aortic valve implantation multidisciplinary (TAVI) programmes.

METHODS

We used a prospective two-part multimethod study design. In part A, we examined the concordance between the Essential Frailty Toolset (EFT) and the score attributed by healthcare professionals based on visual rating of photographs using kappa estimates and linear regression. In part B, we conducted a content analysis qualitative study to elicit information about how the TAVI multidisciplinary team used photographs to form impressions about frailty.

FINDINGS

Part A: 94 healthcare professionals (registered nurses/allied health 65%; physicians 35%) rated 40 representative photographs (women 42.5%; mean age 83.4±7.5; mobility aid 40%) between 0 (robust) and 5 (very frail). The estimate of weighted kappa was 0.2575 (95% confidence interval 0.082-0.433), indicating fair agreement between median healthcare professional visual and EFT score, especially when the EFT was 1 or 4. There was significant discordance among raters (kappa estimate 0.110, 95% confidence interval 0.079-0.141). Age, sex and mobility aid did not have a significant effect on score discordance. Part B: 12 members of the TAVI multidisciplinary team (registered nurses 27.5%; physicians 72.5%) were shown a series of six representative patient photographs. The following themes emerged from the data: (a) looking at the outside; (b) thinking about the inside; (c) use but with caution; and (d) a better approach.

CONCLUSION

A patient photograph offers complementary information to the multimodality assessment of TAVI patients.

Facilitating transcatheter aortic valve implantation in the era of COVID-19: Recommendations for programmes

The COVID-19 pandemic continues to significantly impact the treatment of people living with aortic stenosis, and access to transcatheter aortic valve implantation. Transcatheter aortic valve implantation (TAVI) programmes require unique coordinated processes that are currently experiencing multiple disruptions and are guided by rapidly evolving protocols. We present a series of recommendations for TAVI programmes to adapt to the new demands, based on recent evidence and the international expertise of nurse leaders and collaborators in this field. Although recommended in most guidelines, the uptake of the role of the TAVI programme nurse is uneven across international regions. COVID-19 is further highlighting why a nurse-led central point of coordination and communication is a vital asset for patients and programmes. We propose an alternative streamlined evaluation pathway to minimize patients' pre-procedure exposure to the hospital environment while ensuring appropriate treatment decision and shared decision-making. The competing demands created by COVID-19 require vigilant wait list management, with risk stratification, telephone surveillance and optimized triage and prioritization. A minimalist approach with close scrutiny of all parts of the procedure has become an imperative to avoid any complications and ensure patients' accelerated recovery. Lastly, we outline a nurse-led protocol of rapid mobilization and reconditioning as an effective strategy to facilitate safe next-day discharge home. As the pandemic abates, TAVI programmes must facilitate access to care without compromising patient safety, enable hospitals to manage the competing demands created by COVID-19 and establish new processes to support patients living with valvular heart disease.

Patients' experiences of the transcatheter aortic valve implantation trajectory: A grounded theory study

Aim

The aim of this study was to explore how patients experienced the recovery process from transcatheter aortic valve implantation.

Design

A qualitative approach where in-depth interviews were used.

Method

Eleven men and eight women undergoing transcatheter aortic valve implantation were individually interviewed 6 months after transcatheter aortic valve implantation. Grounded theory was used for the analysis.

Results

The analysis generated the core concept "A journey of balancing between life-struggle and hope" connected to descriptive, bipolar categories. Before transcatheter aortic valve implantation patients not only felt threatened but also experienced hope. The rehabilitation phase was described as demanding or surprisingly simple. At the 6 months follow-up patients were pleased to return to life, however, still struggling with limitations. To feel hope is essential for transcatheter aortic valve implantation patients' well-being, both before and during the recovery process. It is important that healthcare professionals not only support hopeful thinking but also take time to discuss and prepare patients, talk about concerns and build confidence. Individual plans for rehabilitation should be designed.

Avoidance of urinary catheterization to minimize in-hospital complications after transcatheter aortic valve implantation: An observational study

Background:

Contemporary transcatheter aortic valve implantation (TAVI) devices and approach present opportunities to review historical practices initially informed by early treatment development and cardiac surgery. The avoidance of urinary catheterization in the older TAVI population is a strategy to minimize in-hospital complications. The purpose of the study was to explore elimination-related complications following the phased implementation of a default strategy of avoiding urinary catheterization in patients undergoing transfemoral (TF) TAVI.

Methods:

We conducted an observational study using a retrospective chart review of patients treated between 2011 and 2013 to identify patient characteristics, peri-procedure details, in-hospital outcomes and elimination-related complications in patients who did or did not receive a peri-procedure indwelling catheter. Descriptive analyses were used to report differences between the groups; we conducted a regression analysis to explore the relationship between the practice of urinary catheterization and total procedure time.

Results:

Of the 408 patients who underwent TF TAVR, 188 (46.1%) received a peri-procedure indwelling urinary catheter and 220 (53.9%) did not. There was no difference in in-hospital mortality (2.2%), disabling stroke (0.5%), or other major cardiac adverse events. The avoidance of a urinary catheter resulted in significantly lower rates of urinary tract infection requiring a new antibiotic regimen (1.4% versus 6.1%, p = 0.014), haematuria documented by medicine or nursing (3.7% versus 17.6%, p = 0.001), and the need for continuous bladder irrigation (2.7% versus 0%, p = 0.027).

Conclusion:

The avoidance of a urinary catheter may contribute to improved outcomes in patients undergoing TAVI. The intervention should be further evaluated within the broader study of minimalist TAVI.

Transition to palliative care when transcatheter aortic valve implantation is not an option: opportunities and recommendations

PURPOSE OF REVIEW

Transcatheter aortic valve implantation (TAVI) is the recommended treatment for most patients with symptomatic aortic stenosis at high surgical risk. However, TAVI may be clinically futile for patients who have multiple comorbidities and excessive frailty. This group benefits from transition to palliative care to maximize quality of life, improve symptoms, and ensure continuity of health services. We discuss the clinical determination of utility and futility, explore the current evidence guiding the integration of palliative care in procedure-focused cardiac programs, and outline recommendations for TAVI programs.

RECENT FINDINGS

The determination of futility of treatment in elderly patients with aortic stenosis is challenging. There is a paucity of research available to guide best practices when TAVI is not an option. Opportunities exist to build on the evidence gained in the management of end of life and heart failure. TAVI programs and primary care providers can facilitate improved communication and processes of care to provide decision support and transition to palliative care.

SUMMARY

The increased availability of transcatheter options for the management of valvular heart disease will increase the assessment of people with life-limiting conditions for whom treatment may not be an option. It is pivotal to bridge cardiac innovation and palliation to optimize patient outcomes.

Nursing leadership of the transcatheter aortic valve implantation Heart Team: Supporting innovation, excellence, and sustainability

Transcatheter Aortic Valve Implantation (TAVI) is an innovative and resource-intensive treatment of valvular heart disease. Growing evidence and excellent outcomes are contributing to increased patient demand. The Heart Team is foundational to TAVI programs to manage the complexities of case selection and other aspects of care. The competencies and expertise of nurses are well suited to provide administrative and clinical leadership within the TAVI Heart Team to promote efficient, effective, and sustainable program development. The contributions of nursing administrative and clinical leaders exemplify the leadership roles that nurses can assume in healthcare innovation.

Factors influencing the decision of older adults to be assessed for transcatheter aortic valve implantation: An exploratory study

BACKGROUND

Transcatheter aortic valve implantation (TAVI) is the recommended therapy for patients with severe symptomatic aortic stenosis at increased surgical risk and likely to derive benefit. Multimodality and multidisciplinary assessment is required for the heart team to determine eligibility for TAVI in a primarily older population. Little is known about patients' motivation and perspectives on making the decision to undergo the complex assessment.

AIMS

To explore factors influencing patients' decision making to undergo TAVI eligibility assessment to inform practice, programme development, health policy and future research.

METHODS

An exploratory qualitative approach was used. Semistructured interviews were conducted with 15 patients at the time of their referral for assessment to a quaternary cardiac and high volume TAVI centre.

RESULTS

Multiple, intersecting factors that included biomedical, functional, social and environmental considerations influenced patients' decision. The six distinct factors were symptom burden, participants' perception as 'experienced' patients, expectations of benefit and risks, healthcare system and informal support, logistical barriers and facilitators, and obligations and responsibilities.

CONCLUSIONS

The decision to undergo TAVI eligibility assessment is multifaceted and complex. Programmatic processes of care must be in place to facilitate appropriate and patient-centered decision making and access to TAVI. Strategies are required to mitigate the risks associated with the rapid deterioration of severe aortic stenosis, address patient and referring physicians' education needs, and provide individualised care and equitable access. Future research must focus on patients' experiences throughout the trajectory of TAVI care.

Exploring changes in functional status while waiting for transcatheter aortic valve implantation

BACKGROUND

Aortic stenosis (AS) is a structural heart disease primarily associated with ageing. For people with multiple co-morbidities, surgical treatment may not be a safe or feasible option. Transcatheter aortic valve implantation (TAVI) is indicated for patients with symptomatic AS who are at excessive risk for surgical valve replacement and are likely to derive significant benefit. Functional status can deteriorate during the time between referral and procedure because of the rapid disease progression of severe AS and varying wait-times for treatment in Canada.

AIMS

The purpose of this study was to examine changes in functional status between time of eligibility assessment and TAVI procedure date.

METHODS

An exploratory prospective cohort study was conducted to evaluate changes in functional status including gait speed, frailty scores and cognitive status.

RESULTS

Thirty-two patients participated in the study with median age 81 years. Functional status declined between time of eligibility assessment and time of TAVI: gait speed increased by an average of 0.53 s (standard deviation (SD)=1.0, p=0.01) and frailty scores increased by an average of 0.31 (SD=0.64, p=0.01). Patients waiting longer than six weeks for TAVI had a larger decline in gait speed than patients waiting less than six weeks (p=0.02). Patients living alone had a larger increase in frailty scores compared to patients living with another adult (p=0.05).

CONCLUSION

Older adults with life-limiting AS are vulnerable to changes in functional status. In the absence of TAVI wait-time benchmarks, findings may be used to facilitate individualized care and management strategies and inform health-care policy.

Immediate post-operative responses to transcatheter aortic valve implantation: An observational study

BACKGROUND

Conventional treatment for patients with severe symptomatic aortic stenosis is surgical aortic valve replacement (SAVR), but transcatheter aortic valve implantation (TAVI) has become a reliable alternative in high-risk patients.

AIMS

The aim of our study was to describe the post-operative patient response to TAVI on the evening of the procedure and the following day before discharge from the coronary care unit. A secondary aim was to compare responses of patients younger and older than 80 years of age.

METHODS

A prospective, comparative observational study triangulating nurse assessment and structured interviews on a cohort of 54 Danish patients: 28/26 male/female, 26/28 younger/older than 80. Mean age in the younger/older group was 73/85 years.

RESULTS

After TAVI pain was experienced by 47 (87%) patients; 29 (62%) were restricted by pain, and 24 (44%) had discomfort at the femoral insertion site. Disturbed sleep/rest were reported by 34 (63%)/29 (55%) patients; nausea/vomiting by 14 (26%)/5 (9%) patients, restricting eating/drinking in 11 (21%)/8 (15%) patients. Sinus rhythm/atrial fibrillation/paced rhythm were observed in 35 (65%)/8 (15%)/21 (39%) patients; bleeding/haematoma/oozing from femoral insertion site in 23 (45%)/10 (19%)/23 (43%) patients.

CONCLUSION

Patients older than 80 years did as well as the younger patients in our study; the main complaints were post-operative pain and disrupted sleep. Our numbers are small, but most patients experienced considerable pain, predominantly continuous and at rest. We recommend the development of an evidence-based pathway to address the immediate post-operative issues in TAVI patients. Non-pharmacological interventions to prevent pain and promote sleep need to be explored.

Integrating a palliative approach in a transcatheter heart valve program: bridging innovations in the management of severe aortic stenosis and best end-of-life practice

Severe aortic stenosis (AS) is the most prevalent structural heart disease and affects primarily older adults in their last decade of life. If the risk for surgery is high, transcatheter aortic valve implantation (TAVI) is the treatment of choice for many patients with suitable anatomy who are likely to derive significant benefit from this innovative and minimally invasive approach. In a large transcatheter heart valve (THV) centre that offers TAVI as one of the treatment options, of 565 consecutive referrals for the assessment of eligibility for TAVI over 18 months, 78 (14%) were deemed unsuitable candidates for TAVI or higher risk surgery by the interdisciplinary Heart Team because of their advanced disease, excessive frailty or comorbid burden. Concerns were raised for patients for whom TAVI is not an option. The integration of a palliative approach in a THV program offers opportunities to adopt best end-of-life practices while promoting innovative approaches for treatment. An integrated palliative approach to care focuses on meeting a patient's full range of physical, psychosocial and spiritual needs at all stages of a life-limiting illness, and is well suited for the severe AS and TAVI population. A series of interventions that reflect best practices and current evidence were adopted in collaboration with the Palliative Care Team and are currently under evaluation in a large TAVI centre. Changes include the introduction of a palliative approach in patient assessment and education, the measurement of symptoms, improved clarity about responsibility for communication and follow-up, and triggering referrals to palliative care services.