Pulmonary embolism is inferred by low blood oxygen levels.
Janet Price -LRB- born 1941 -RRB- is a Welsh soprano particularly associated with the 19th-century Italian bel canto repertory .. Welsh. Wales. bel canto. bel canto. She has been married to composer Adrian Beaumont since 1963 .. Adrian Beaumont. Adrian Beaumont. Born in Pontypool , Wales , she studied piano and singing at the Cardiff University with Olive Groves , Isobel Baillie and Hervey Alan .. Pontypool. Pontypool. Wales. Wales. Cardiff University. Cardiff University. Hervey Alan. Hervey Alan. She also studied in Paris with Nadia Boulanger .. Paris. Paris. Nadia Boulanger. Nadia Boulanger. She made her debut in 1964 with the BBC Wales .. Wales. Wales. BBC Wales. BBC Wales. In 1971 , she appeared at the London Town Hall in a concert performance of Joseph Haydn 's La fedelta premiata .. London. London. Joseph Haydn. Joseph Haydn. La fedelta premiata. La fedelta premiata. She then specialized in 19th-century Italian bel canto and French repertoire and began an association with Opera Rara , appearing in concert and staged performances of long neglected works by composers such as Meyerbeer , Saverio Mercadante , Donizetti , Auber , etc. .. bel canto. bel canto. Opera Rara. Opera Rara. Meyerbeer. Meyerbeer. Saverio Mercadante. Saverio Mercadante. Donizetti. Donizetti. Auber. Daniel Auber. She also appeared with the Handel Opera Society , the Welsh National Opera , the Glyndebourne Festival , the Kent Opera .. Welsh. Wales. Welsh National Opera. Welsh National Opera. Glyndebourne Festival. Glyndebourne Festival. Kent Opera. Kent Opera. She sang Fiordiligi in Cosi fan tutte at the Opera-Comique in 1974 , and also appeared at the Flanders Festival and the San Antonio Grand Opera -LRB- Texas -RRB- .. Cosi fan tutte. Cosi fan tutte. Opera-Comique. Opera-Comique. Flanders. Flanders. Texas. Texas. She recorded Ugo , conte di Parigi with Opera Rara in 1977 .. Opera Rara. Opera Rara. She can also be heard on a few live recordings in operas like L'etoile du nord , Orazi e Curiazi , Virginia , La muette de Portici , Maria Padilla , Torquato Tasso .. L'etoile du nord. L'etoile du nord. Orazi e Curiazi. Orazi e Curiazi. Virginia. Virginia ( Mercadante ). La muette de Portici. La muette de Portici. Maria Padilla. Maria Padilla. Torquato Tasso. Torquato Tasso ( opera )