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Morbidity and mortality outcomes of patients requiring isolated tricuspid valve surgery: a retrospective cohort study of 537 patients in New South Wales between 2002 and 2018.
BMJ Open 2024 May 8
OBJECTIVES: The aim of the study was to evaluate mortality and morbidity outcomes following open-heart isolated tricuspid valve surgery (TVSx) with medium to long-term follow-up.
DESIGN: Retrospective cohort study.
SETTING: New South Wales public and private hospital admissions between 1 January 2002 and 30 June 2018.
PARTICIPANTS: A total of 537 patients underwent open isolated TVSx during the study period.
PRIMARY AND SECONDARY OUTCOME MEASURES: Primary outcome was all-cause mortality tracked from the death registry to 31 December 2018. Secondary morbidity outcomes, including admission for congestive cardiac failure (CCF), new atrial fibrillation (AF), infective endocarditis (IE), pulmonary embolism (PE) and insertion of a permanent pacemaker (PPM) or implantable cardioverter-defibrillator (ICD), were tracked from the Admitted Patient Data Collection database. Independent mortality associations were determined using the Cox regression method.
RESULTS: A total of 537 patients underwent open isolated TVSx (46% male): median age (IQR) was 63.5 years (43.9-73.8 years) with median length of stay of 16 days (10-31 days). Main cardiovascular comorbidities were AF (54%) and CCF (42%); 67% had rheumatic tricuspid valve. In-hospital and total mortality were 7.4% and 39.3%, respectively (mean follow-up: 4.8 years). Cause-specific deaths were evenly split between cardiovascular and non-cardiovascular causes. Predictors of mortality included a history of CCF (HR=1.78, 95% CI 1.33 to 2.38, p<0.001) and chronic pulmonary disease (HR=2.66, 95% CI 1.63 to 4.33, p<0.001). In-hospital PPM rate was 10.0%. At 180 days, 53 (9.9%) patients were admitted for CCF, 25 (10.1%) had new AF, 7 (1.5%) had new IE and <1% had PE, post-discharge PPM or ICD insertion.
CONCLUSION: Open isolated TVSx carries significant mortality risk, with decompensated CCF and new AF the most common morbidities encountered after surgery. This report forms a benchmark to compare outcomes with newer percutaneous tricuspid interventions.
DESIGN: Retrospective cohort study.
SETTING: New South Wales public and private hospital admissions between 1 January 2002 and 30 June 2018.
PARTICIPANTS: A total of 537 patients underwent open isolated TVSx during the study period.
PRIMARY AND SECONDARY OUTCOME MEASURES: Primary outcome was all-cause mortality tracked from the death registry to 31 December 2018. Secondary morbidity outcomes, including admission for congestive cardiac failure (CCF), new atrial fibrillation (AF), infective endocarditis (IE), pulmonary embolism (PE) and insertion of a permanent pacemaker (PPM) or implantable cardioverter-defibrillator (ICD), were tracked from the Admitted Patient Data Collection database. Independent mortality associations were determined using the Cox regression method.
RESULTS: A total of 537 patients underwent open isolated TVSx (46% male): median age (IQR) was 63.5 years (43.9-73.8 years) with median length of stay of 16 days (10-31 days). Main cardiovascular comorbidities were AF (54%) and CCF (42%); 67% had rheumatic tricuspid valve. In-hospital and total mortality were 7.4% and 39.3%, respectively (mean follow-up: 4.8 years). Cause-specific deaths were evenly split between cardiovascular and non-cardiovascular causes. Predictors of mortality included a history of CCF (HR=1.78, 95% CI 1.33 to 2.38, p<0.001) and chronic pulmonary disease (HR=2.66, 95% CI 1.63 to 4.33, p<0.001). In-hospital PPM rate was 10.0%. At 180 days, 53 (9.9%) patients were admitted for CCF, 25 (10.1%) had new AF, 7 (1.5%) had new IE and <1% had PE, post-discharge PPM or ICD insertion.
CONCLUSION: Open isolated TVSx carries significant mortality risk, with decompensated CCF and new AF the most common morbidities encountered after surgery. This report forms a benchmark to compare outcomes with newer percutaneous tricuspid interventions.
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