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Long QT Syndrome
Long QT syndrome (LQTS) is a condition affecting repolarization (relaxing) of the heart after a heartbeat, giving rise to an abnormally lengthy QT interval. It results in an increased risk of an irregular heartbeat which can result in fainting, drowning, seizures, or sudden death. These episodes can be triggered by exercise or stress. Some rare forms of LQTS are associated with other symptoms and signs including deafness and periods of muscle weakness. Long QT syndrome may be present at birth or develop later in life. The inherited form may occur by itself or as part of larger genetic disorder. Onset later in life may result from certain medications, low blood potassium, low blood calcium, or heart failure. Medications that are implicated include certain antiarrhythmics, antibiotics, and antipsychotics. LQTS can be diagnosed using an electrocardiogram (EKG) if a corrected QT interval of greater than 480–500 milliseconds is found, but clinical findings, other EKG featur ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QT Interval
The QT interval is a measurement made on an electrocardiogram used to assess some of the electrical properties of the heart. It is calculated as the time from the start of the Q wave to the end of the T wave, and approximates to the time taken from when the cardiac ventricles start to contract to when they finish relaxing. An abnormally long or abnormally short QT interval is associated with an increased risk of developing abnormal heart rhythms and sudden cardiac death. Abnormalities in the QT interval can be caused by genetic conditions such as long QT syndrome, by certain medications such as sotalol or pitolisant, by disturbances in the concentrations of certain salts within the blood such as hypokalaemia, or by hormonal imbalances such as hypothyroidism. Measurement The QT interval is most commonly measured in lead II for evaluation of serial ECGs, with leads I and V5 being comparable alternatives to lead II. Leads III, aVL and V1 are generally avoided for measurement ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Short QT Syndrome
Short QT syndrome (SQT) is a very rare genetic disease of the electrical system of the heart, and is associated with an increased risk of abnormal heart rhythms and sudden cardiac death. The syndrome gets its name from a characteristic feature seen on an electrocardiogram (ECG) – a shortening of the QT interval. It is caused by mutations in genes encoding ion channels that shorten the cardiac action potential, and appears to be inherited in an autosomal dominant pattern. The condition is diagnosed using a 12-lead ECG. Short QT syndrome can be treated using an implantable cardioverter-defibrillator or medications including quinidine. Short QT syndrome was first described in 2000, and the first genetic mutation associated with the condition was identified in 2004. Signs and symptoms Those affected by short QT syndrome (SQT) have an increased risk of developing abnormal heart rhythms. These abnormal heart rhythms often occur at a young age. They may take relatively b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QuickTime
QuickTime is an extensible multimedia framework developed by Apple Inc., capable of handling various formats of digital video, picture, sound, panoramic images, and interactivity. Created in 1991, the latest Mac version, QuickTime X, is available for Mac OS X Snow Leopard up to macOS Mojave. Apple ceased support for the Windows version of QuickTime in 2016, and ceased support for QuickTime 7 on macOS in 2018. As of Mac OS X Lion, the underlying media framework for QuickTime, QTKit, was deprecated in favor of a newer graphics framework, AVFoundation, and completely discontinued as of macOS Catalina. Overview QuickTime is bundled with macOS. QuickTime for Microsoft Windows is downloadable as a standalone installation, and was bundled with Apple's iTunes prior to iTunes 10.5, but is no longer supported and therefore security vulnerabilities will no longer be patched. Already, at the time of the Windows version's discontinuation, two such zero-day vulnerabilities (b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QT (musician)
Hayden Frances Dunham (born June 16, 1988) is a performance artist, designer, singer, songwriter and DJ. They grew up in Austin, Texas and attended the Gallatin School of Individualized Study at NYU. They are best known for their work as QT (an initialism for Quinn Thomas) a music project founded in 2014, in collaboration with English producer A. G. Cook, and Scottish producer Sophie. QT is a pop singer, portrayed by Dunham and sung by Harriet Pittard, who promotes and is the living embodiment of the semi-fictitious DrinkQT energy drink. Their debut single " Hey QT" was released in 2014. Dunham began operating under the pseudonym Hyd in 2020, releasing their debut single "No Shadow" in September 2021. A four-track EP was released November 5. Hyd's debut album '' Clearing'' was released on November 11, 2022, via PC Music. Career 2014–2016: QT Before the QT project, Dunham had done work as a designer and artist. They met Scottish producer Sophie after the two had seen ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QT Hotels & Resorts
QT Hotels & Resorts, or QT, is a boutique hotel accommodation and hospitality provider that operates in Australia and New Zealand. Established in 2011, the brand currently operates ten hotels and resorts. QT is a subsidiary of the ASX-listed Event Hospitality and Entertainment, a corporation that owns and operates brands in the entertainment, hospitality and leisure sectors, mainly within Australasia. History The brand was established in 2011, with its first hotel QT Gold Coast. The flagship location, QT Sydney operates inside two of Sydney's historical buildings, the Sydney State Theatre and the Gowings building, both of which opened their doors in 1929. The hotel chain is known internationally for its interaction with art, which is integrated into the overall hotel design. EVENT's success with Rydges Hotels & Resorts enabled the company to have a large market share of four-star accommodation with-in Australia and New Zealand. Therefore, parent company, Event Hospitality an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QuikTrip
The QuikTrip Corporation, more commonly known as QuikTrip (QT), is an American chain of convenience stores based in Tulsa, Oklahoma that primarily operates in the Midwestern, Southern, and Southeastern United States as well as in Arizona. QuikTrip is one of two convenience store chains based in Oklahoma (the other being Love's). The first QuikTrip was opened in 1958 in Tulsa by Burt Holmes and Chester Cadieux. The company expanded outside of Oklahoma in 1968, and started selling gasoline in 1971. Chester's son, Chet, Jr., is the current CEO. In 2005, QuikTrip and Chevron were the first two retailers to earn a " Top Tier" rating from General Motors, BMW, Honda, Volkswagen, Audi, and Toyota. The "Top Tier" rating exceeds the United States Environmental Protection Agency's standards for gasoline additives. QuikTrip was ranked as one of the 100 Best Companies to Work For. In January 2006, QT ranked No. 21, ninth among companies classified as "mid-size". In 2008, QT was rank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QT Inc
QT or Qt may refer to: Arts and media * QT (musician) (born 1988), pop singer * '' QT: QueerTelevision'', an LGBT newsmagazine which aired on Canada's CityTV in the 1990s * Quentin Tarantino (born 1963), American filmmaker * ''Question Time'' (TV programme), a topical debate BBC television programme in the UK Organizations * QuikTrip, a US convenience store chain * QT Inc., manufacturer of the Q-Ray ionized bracelet * QT Hotels & Resorts * The Qt Company Science and technology Medicine * QT interval, on an electrocardiogram ** Long QT syndrome, a rare heart condition ** Short QT syndrome, a very rare disease of the heart Other uses in science and technology * Qt (software), a cross-platform application framework * QuickTime, a multimedia technology from Apple Inc. * Quiet Trader, cargo versions of the BAe 146 jet * Quart (qt), a unit of volume equal to a quarter of a gallon Other uses * Quality time, time spent with loved ones which is in some way special * QT (New York City S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
BAe 146
The British Aerospace 146 (also BAe 146) is a short-haul and regional airliner that was manufactured in the United Kingdom by British Aerospace, later part of BAE Systems. Production ran from 1983 until 2001. Manufacture by Avro International Aerospace of an improved version known as the Avro RJ began in 1992. A further-improved version with new engines, the Avro RJX, was announced in 1997, but only two prototypes and one production aircraft were built before production ceased in 2001. With 387 aircraft produced, the Avro RJ/BAe 146 is the most successful British civil jet airliner programme. The BAe 146/Avro RJ is a high-wing cantilever monoplane with a T-tail. It has four geared turbofan engines mounted on pylons underneath the wings, and has a retractable tricycle landing gear. The aircraft operates very quietly, and as such has been marketed under the name Whisperjet. It sees wide usage at small, city-based airports such as London City Airport. In its primary role, it se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quantitative Tightening
Quantitative tightening (QT) is a contractionary monetary policy tool applied by central banks to decrease the amount of liquidity or money supply in the economy. A central bank implements quantitative tightening by reducing the financial assets it holds on its balance sheet by selling them into the financial markets, which decreases asset prices and raises interest rates. QT is the reverse of quantitative easing (or QE), where the central bank prints money and uses it to buy assets in order to raise asset prices and stimulate the economy. QT is rarely used by central banks, and has only been employed after prolonged periods of Greenspan put-type stimulus, where the creation of too much central banking liquidity has led to a risk of uncontrolled inflation (e.g. 2008, 2018 and 2022). Background Quantitative easing was massively applied by leading central banks to counter the Great Recession that started in 2008. The prime rates were decreased to zero; some rates later went in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QT (New York City Subway Service)
The Q Second Avenue/Broadway Express/Brighton Local is a rapid transit service in the B Division of the New York City Subway. Its route emblem, or "bullet", is colored since it uses the BMT Broadway Line in Manhattan. The Q operates at all times between 96th Street in the Upper East Side of Manhattan and Stillwell Avenue in Coney Island, Brooklyn, via the BMT Broadway Line, the Manhattan Bridge and the BMT Brighton Line. Daytime service makes express stops in Manhattan and local stops in Brooklyn; late night service makes local stops along its entire route. Limited rush hour service operates locally in Brooklyn via the BMT Sea Beach Line and express via the BMT Fourth Avenue Line, but only in the northbound direction. The Q was originally the Brooklyn–Manhattan Transit Corporation (BMT)'s 1 service; beginning in 1920, it ran along the Brighton Line in Brooklyn and Broadway Line in Manhattan. In the past, the Q has run many different service patterns in Brooklyn, Manhattan a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Qt Company
The Qt Company (pronounced "cute"; formerly Trolltech and Quasar Technologies) is a software company based in Espoo, Finland. It oversees the development of its Qt application framework within the Qt Project. It was formed following the acquisition of Qt by Digia, but was later spun off into a separate, publicly traded company. It has core R&D in Oslo, Norway, as well as large engineering teams in Berlin, Germany, and Oulu, Finland. The Qt Group operates in China, Finland, Germany, Japan, South Korea, Norway, the US, France, UK, Italy and India. Products The company provides software development platforms and frameworks, as well as expert consulting services. Its flagship product is Qt, a multi-platform Graphical User Interface ( GUI) framework written in C++. Qt is popular with application developers using C++ but is supported by bindings for other programming languages too, such as Python. Qt also includes packages such as data structures and a networking library. The po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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