ABSTRACT
Ochronosis is the bluish-black discolouration of connective tissue, including heart valves, joints, kidney and the skin. It is due to the deposition of homogentisic acid (HGA) commonly found in alkaptonuria. Ochronosis in the aortic valve is a rare occurrence and there is limited data available on the most appropriate choice of valve prosthesis in these patients. This case involves a 72-year-old male with symptomatic aortic stenosis and on echocardiogram a severe calcific trileaflet aortic stenosis with normal ejection fraction. Intraoperative aortic cannulation was routine and uncomplicated, and bluish-black discolouration of aortic valve was noted. Thorough decalcification was undertaken and a bioprosthetic valve was chosen in accordance with patient's age and preference. There were no complications post-operatively and the patient reported being well. Ochronosis affecting the aortic valve is a rare condition and there is limited data on the recurrence rate as well as the natural history of the disease. This case reports aims to provide data to facilitate further research to better understand the natural history of aortic valve ochronosis and rates of recurrence following bioprosthetic aortic valve replacement (AVR).
ABSTRACT
Hiatal hernias are due to defects in the esophageal hiatus in the diaphragm and can be classified into sliding or paraesophageal hernias. A 31-year-old male raised a suspicion of a Bochdalek hernia but at surgery had a large paraesophageal hernia. Bochdalek hernia, a congenital diaphragmatic hernia presents in adulthood asymptomatically or with vague abdominal symptoms. It is paramount to confirm the diagnosis and rule out any fatal complications with imaging studies. Prompt surgical management with large complicated hernias, such as in our case presentation would ensure the most favorable outcome.
ABSTRACT
BACKGROUND: Minimally invasive aortic valve replacement (MAVR) has demonstrated a benefit with respect to increased patient satisfaction due to minimised pain and earlier recovery. Sutureless valves may benefit MAVR and conventional aortic valve replacement (AVR) by reducing operative times and blood transfusion requirements. The Perceval valve (Sorin, Salluggia, Italy) is a self-expanding prosthesis made from bovine pericardium mounted in a nitinol stent, designed to simplify the implantation of an aortic valve. This meta-analysis evaluates the clinical, haemodynamic, and survival outcomes of the Perceval sutureless valve. METHODS: An electronic search of 4 databases was performed from January 2000 to December 2016. Primary outcomes included mortality and stroke. Secondary outcomes included minimally invasive access, paravalvular leak, overall long-term survival, postoperative echocardiographic findings, and functional class improvement. RESULTS: After the application of inclusion and exclusion criteria, 14 of 66 relevant articles were selected for assessment. Of these 14 studies, a total number of 2,505 patients were included. The current evidence on the Perceval valve for aortic valve disease is limited to observational studies only. Minimally invasive surgery was performed in 976 patients, of which 336 were via the right anterior thoracotomy approach. The Perceval M and L sutureless valves were the most frequently used, 782 and 770 respectively. The incidence of major adverse events included 30-day mortality (0 to 4.9%), cerebrovascular accident (0 to 3%), permanent pacemaker insertion (0 to 17%), moderate to severe paravalvular leak (0 to 8.6%), and re-operation (0 to 4.8%). Post-operative mean aortic valve gradient ranged from 9 to 15.9 mmHg and post-operative New York Heart Association (NYHA) Class I or II ranged from 82% to 96%. The 1-year survival ranged from 86% to 100%; and 5-year survival was 71.3% to 85.5% in two studies. CONCLUSIONS: The Perceval valve is associated with excellent post-operative results in MAVR and in conventional AVR. Larger randomised controlled studies are required to evaluate the long-term efficacy of the prosthesis.
