Excellence and Durability: A Normally Functioning Björk-Shiley Flat-Disc Prosthesis 42 Years Post Implantation.

Mechanical heart valves have been used worldwide for more than 60 years. While the composition and design of the valves, and the surgical techniques employed to implant them, have changed and advanced over that time, some of the earlier mechanical heart valves showed such great durability that they are still functioning in patients today. One of the most often-used and long-lasting mechanical prostheses was the Björk-Shiley heart valve. While many versions of this valve were used during its 25 years of production, the most durable was the Björk-Shiley flat-disc valve. This valve was first implanted in 1971 and was the first successful tilting-disc valve. Here, the complex medical history is reported of an elderly patient with a well-functioning Björk-Shiley flat-disc valve in the aortic position that was placed over 42 years ago. The history of mechanical heart valves - in particular the Björk-Shiley heart valve, including the flat-disc mechanical valve - is also briefly reviewed.

Clinical Characteristics, Risk Factors, and Outcomes Among a Large Midwestern U.S. Cohort of Patients Hospitalized With COVID-19 Prior to Vaccine Availability.

Purpose: The COVID-19 pandemic posed unprecedented demands on health care. This study aimed to characterize COVID-19 inpatients and examine trends and risk factors associated with hospitalization duration, intensive care unit (ICU) admission, and in-hospital mortality. Methods: This retrospective study analyzed patients with SARS-CoV-2 infection hospitalized at an integrated health system between February 2, 2020, and December 12, 2020. Patient characteristics and clinical outcomes were obtained from medical records. Backward stepwise logistic regression analyses were used to identify independent risk factors of ICU admission and in-hospital mortality. Cox proportional hazards models were used to evaluate relationships between ICU admission and in-hospital mortality. Results: Overall, 9647 patients were analyzed. Mean age was 64.6 ± 18 years. A linear decrease was observed for hospitalization duration (0.13 days/week, R2=0.71; P<0.0001), ICU admissions (0.35%/week, R2=0.44; P<0.001), and hospital mortality (0.16%/week, R2=0.31; P<0.01). Bacterial co-infections, male sex, history of chronic lung and heart disease, diabetes, and Hispanic ethnicity were identified as independent predictors of ICU admission (P<0.001). ICU admission and age of ≥65 years were the strongest independent risk factors associated with in-hospital mortality (P<0.001). The in-hospital mortality rate was 8.3% (27.4% in ICU patients, 2.6% in non-ICU patients; P<0.001). Conclusions: Results indicate that, over the pandemic's first 10 months, COVID-19 carried a heavy burden of morbidity and mortality in older patients (>65 years), males, Hispanics, and those with bacterial co-infections and chronic comorbidities. Although disease severity has steadily declined following administration of COVID-19 vaccines along with improved understanding of effective COVID-19 interventions, these study findings reflect a "natural history" for this novel infectious disease in the U.S. Midwest.

Cardiology consultation for non-cardiac surgery: Medical and legal explorations for clinicians.

Cardiologists performing preoperative cardiac evaluations for non-cardiac surgery have a unique opportunity to assess and optimize the patient's baseline and general health; determine the patient's inherent surgical risk based upon a comprehensive history, physical examination and pertinent laboratory data; ensure the patient has made an informed choice regarding surgery, and identify post-operative risks that must be considered to reduce the potential for major adverse cardiovascular events. There is always a small but inherent risk in surgical procedures. When an adverse outcome occurs there is potential for an allegation of negligence resulting in a detailed autopsy of the medical record. The best defense to an allegation of negligence is comprehensive documentation and a detailed rational for the cardiologist's management decisions.

Medical liability in the electronic medical records era.

Physicians encounter new medical liability risks in a medical milieu subjugated to electronic health information exchange. The budding electronic medical record systems have revolutionized how health care is dispensed. They alter the doctor-patient relationship in many uncertain and evolving ways. The shifting landscape of electronic information and medical liability risk is important for every practicing physician to understand. We review the historical changes of the electronic medical record, the emerging changes of the maturing electronic medical record, and the medical liability risk for physicians using the emerging electronic medical record systems. Because the electronic medical record appears to be here to stay, it is imperative that physicians adapt to efficient and effective use of the electronic information highway.

Hypertrophic cardiomyopathy with aortic dilation: a novel observation.

AIMS: Our goal was to identify the prevalence of aortic dilation in patients with hypertrophic cardiomyopathy (HCM), the most prevalent (0.2%) heritable, genetic cardiovascular disease. Aortic dilation also represents a spectrum of familial inheritance. However, data regarding the prevalence of aortic dilation in HCM patients is lacking. METHODS AND RESULTS: This is an observational retrospective study of all patients referred to our HCM centre. Aortic dilation was defined based on recent American Society of Echocardiography and European Association of Cardiovascular Imaging published guidelines. Of the 201 HCM patients seen between Jan. 1, 2011 and March 31, 2014, 18 (9.0%) met the definition of aortic dilation. Mean age was 56.3 ± 9.3 years, 77.8% were male, mean ascending aorta diameter was 4.0 ± 0.4 cm in males and 3.8 ± 0.2 cm in females, mean sinuses of Valsalva diameter was 4.2 ± 0.2 cm in males and 3.8 ± 0.4 cm in females, and 13 (72.2%) had left ventricular outflow tract obstruction. HCM patients with dilated aorta were more likely males, less likely hypertensive and had larger left ventricle diameter and more aortic valve regurgitation; remaining characteristics were similar. CONCLUSION: We report a novel observation with 9.0% prevalance of dilated aorta in HCM patients. Further studies are needed to help define the genetic and pathophysiologic basis as well as the clinical implications of this association in a larger group of HCM patients.

Inflammation, infection, and aortic valve sclerosis; Insights from the Olmsted County (Minnesota) population.

Atherosclerosis-related mechanisms, including inflammation and possibly infection, are likely to be involved in the pathogenesis of calcific aortic valve disease. The purpose of this study was to examine whether systemic inflammatory markers and Chlamydia pneumoniae seropositivity are associated with aortic valve sclerosis (AVS) in a sample of the general population. Transesophageal echocardiography was performed in 381 subjects (median age: 67 years, range: 51-101; 52% men), a sample of the adult population in Olmsted County, Minnesota. The associations between systemic inflammatory markers (blood counts, including white blood cells differential counts, fibrinogen, and high-sensitivity C-reactive protein [hs-CRP]), C. pneumoniae immunoglobulin G (IgG) antibody titers, and AVS were examined. AVS was present in 140 subjects (37% of the population). After adjustment for age, sex, and smoking status: (1). hs-CRP was associated with AVS (odds ratio: 1.20 per two-fold increase in hs-CRP; 95% confidence interval: 1.01-1.43; P = 0.04) but this association was not significant after adjustment for additional risk factors for AVS, including body mass index (P = 0.52). (2). Blood counts and fibrinogen were not associated with AVS (P-values >0.30). (3). C. pneumoniae IgG antibody titers (low [1:16-1:32], intermediate [1:64-1:128], or high [>or=1:256] titers, compared with titers <1:16) were not associated with AVS (P = 0.21). In conclusion, hs-CRP is weakly associated with AVS, an association that is not independent of other AVS risk factors. Blood counts, fibrinogen, and C. pneumoniae seropositivity are not associated with AVS. These findings suggest that other non-inflammatory non-infectious mechanisms are likely to have a role in the pathogenesis of calcific aortic valve disease.

Clinical features and surgical outcome in 25 patients with fenestrations of the coronary sinus.

OBJECTIVE: To analyze symptoms, associated anomalies, diagnostic approach, and surgical procedures in patients with partial fenestrations of the coronary sinus, a rare congenital disorder. BACKGROUND: Partial fenestrations of the walls that usually separate the coronary sinus from the left atrium, also known as partial unroofing of the coronary sinus, may result in increased flow of blood to the lungs, cyanosis, or bidirectional shunting. The diagnosis is important, but difficult to confirm. METHODS: We reviewed retrospectively the clinical, echocardiographic, operative, and follow-up data on 25 patients with partial fenestration of the coronary sinus. The patients had a median age of 8 years, and underwent cardiovascular surgery at Mayo Clinic between 1958 and 2003. RESULTS: The initial diagnosis of a fenestration of the coronary sinus was made by the surgeon at repair of other congenital cardiac anomalies, by cardiac catheterization, or by echocardiography. In 14 patients, fenestration was missed during previous cardiovascular surgery. The most common associated cardiac lesions were atrial septal defects within the oval fossa, persistent left or right superior caval veins, and pulmonary or tricuspid atresia. In 7 patients, the symptoms were at least partially attributable to the fenestration, and included dyspnea, cerebral abscess, transient ischaemic attacks, and cyanosis. The fenestration was addressed surgically in 23 patients, and consisted of closure of the mouth of the coronary sinus, creation of an intra-atrial baffle, or direct repair of the fenestration. Death occurred in 1 patient due to complications unrelated to the repair. In the 24 early survivors, who have been followed up for a median of 85 months, 1 patient has died after a third reoperation for complex congenital cardiac disease. CONCLUSIONS: Fenestrations of the coronary sinus are often missed in the preoperative evaluation of congenitally malformed hearts. When associated with right heart hypoplasia, atrial septal defect, or persistent superior caval vein, fenestrations of the coronary sinus should be considered as a possible additional finding. Once the diagnosis has been made, repair is straightforward.