Historically, the term mitral valve prolapse syndrome has been applied to MVP associated with palpitations, atypical chest pain, dyspnea on exertion, low body mass index, and electrocardiogram abnormalities in the setting of anxiety, syncope, low blood pressure, and other signs suggestive of autonomic nervous system dysfunction.

Historically, many headphones had relatively high impedance, often over 500 ohms in order to operate well with high impedance tube amplifiers.

Historically, these have been built into dedicated pedals for each effect, but modern digital amplifiers and processors allow many different effects to be built into a single, small floor or rack mount unit.

Historically, it was often sung as a sea chanty.

Historically, this was often a promise to exchange the money for precious metals in some fixed amount.

Historically, the term often referred to the combination of economic liberalism, which champions laissez-faire markets, with the classical conservatism concern for established tradition, respect for authority and religious values.

Historically, a great number of coinage metals ( including alloys ) and other materials ( e. g. Porcelain ) have been used practically, artistically, and experimentally in the production of coins for circulation, collection, and metal investment, where bullion coins often serve as more convenient stores of assured metal quantity and purity than other bullion.

Historically, especially in late 18th-and early 19th-century Britain, a dandy, who was self-made, often strove to imitate an aristocratic lifestyle despite coming from a middle-class background.

Historically, distances were often measured by chains such as Gunter's chain, and angles using graduated circles and, later, the theodolite.

Historically, in Western societies the focus of genealogy was on the kinship and descent of rulers and nobles, often arguing or demonstrating the legitimacy of claims to wealth and power.

Historically, no VAT was levied in Jersey, with the result that luxury goods have often been cheaper than in the UK or in France.

Historically, blame has often been laid on Abbey as legal guardian, but he may also have been unaware.

Historically, kimonos were often taken apart for washing as separate panels and resewn by hand.

Historically this use of the term was often contrasted with the term " Labor " referring to those being managed.

Historically, most roads in New Zealand were funded by local road authorities ( often road boards ) who derived their income from local rates.

Historically, Poland often saw itself in partnership with non-Slavic nations most of the time, such as Hungary, Saxony, Sweden or Lithuania under the Polish-Lithuanian Commonwealth from 1569 to 1795.

Historically, the theorem is often attributed simultaneously to Riesz and Fréchet in 1907 ( see references ).

Historically, Muslim rulers have often remarried the wives of their conquered opponents in order to gain ties of kinship with their new subjects.

Historically, the term terrorism was used to refer to actions taken by governments against their citizens whereas now it is more often perceived as targeting of civilians as part of a strategy directed against governments.

Historically, Unitarian Universalists have often been active in political causes, notably the civil rights movement, the gay rights movement, the social justice movement, and the feminist movement.

Historically, the X-Men have been based in the Xavier Institute, near Salem Center, in north-east Westchester County, NY, and are often depicted as a family.

Historically, large sacks often contained grains ; thus the association of these knots with the miller's trade.

Historically they have often taken the form of anagrams, Graecisms, and Latinisations, although there are many other methods of choosing a pseudonym

Historically, time standards were often based on the Earth's rotational period.

Historically, public peering locations were known as network access points ( NAPs ); today they are most often called exchange points or Internet exchanges (" IXP " or " IX ").

Historically, life on Mars has often been hypothesized.

Historically, the cornett was frequently used in consort with sackbuts ( 2 cornetts, 3 sackbuts ), often to double a church choir.

Historically, it was of particular relevance to sailing warships which used them to outmaneuver opponents when the wind had dropped but might be used by any vessel in confined, shoal water to place it in a more desirable position, provided she had enough manpower.

Historically, archery has been used for hunting and combat, while in modern times, its main use is that of a recreational activity.

Historically, the star was frequently used in celestial navigation in the maritime trade, because it is listed as one of the 57 navigational stars.

Historically, a byte was the number of bits used to encode a single character of text in a computer and for this reason it is the basic addressable element in many computer architectures.

Historically, MLB had also used a 2-3 format in a best-of-5 series, but is rarely used.

This was done to accommodate the new one-game wild-card playoffs .< re > http :// espn. go. com / mlb / story / _ / id / 7942366 / owners-approve-wild-card-winners-hosting-games-1-2-division-series </ ref > Historically, however, MLB has used rarely the 2-3 format in a best-of-5 series ..

Historically, materials used in bicycles have followed a similar pattern as in aircraft, the goal being high strength and low weight.

Historically the term latten was used for such alloys.

Historically, the form of the gallery evolved during the 10th century from the increasingly long hallways which had earlier been used to surround the central sanctuary of a temple.

Historically, allegations of cannibalism were used by the colonial powers to justify the enslavement of what were seen as primitive peoples ; cannibalism has been said to test the bounds of cultural relativism as it challenges anthropologists " to define what is or is not beyond the pale of acceptable human behavior ".

Historically, when Capoeira was still prohibited this toque was used to alert capoeiristas that the police was coming, so they could escape before the practice being discovered.

Historically it used to be possible to buy EPROMs with these register bits on the same chip.

Historically, it was widely used as a practice instrument and as an aid to composition, not being loud enough for larger performances.

Historically speaking, salt has been used as a meat preservative as salt promotes water excretion, thus working as a preservative.

Historically, several number bases have been used for representing floating-point numbers, with base 2 ( binary ) being the most common, followed by base 10 ( decimal ), and other less common varieties, such as base 16 ( hexadecimal notation ), as well as some exotic ones like 3 ( see Setun ).

Historically, the term ferromagnet was used for any material that could exhibit spontaneous magnetization: a net magnetic moment in the absence of an external magnetic field.

Historically, the term has also been used in some fields of computer science and information technology to denote the gibibyte, or ( 1024 < sup > 3 </ sup > or 2 < sup > 30 </ sup >) bytes.

Historically the term GMT has been used with two different conventions, sometimes numbering hours starting at midnight and sometimes starting at noon.

Historically the term GMT has been used with two different conventions for numbering hours.

Historically, a marble or limestone edge runner mill, running on a limestone bed was used in Great Britain ; however, by the mid 19th century AD this had changed to either an iron shod stone wheel or a cast iron wheel running on an iron bed.

Historically it has had many definitions, but there are three definitions in current use: the imperial gallon (≈ 4. 546 L ) which since metrication is used colloquially in the United Kingdom and semi-officially within Canada, the United States ( liquid ) gallon (≈ 3. 79 L ), and the lesser used US dry gallon (≈ 4. 40 L ).