![]() ![]() I never actually looked into the latest research behind it, but I heard from one ICU nurse that they are ‘useless’. 1 They are ubiquitous in the hospital and found at the foot of patient’s beds. SCDs are also known as Intermittent Pneumatic Compression devices or IPCs, for short. The relative efficacy of the two devices in deep vein thrombosis prevention should be tested in future studies. SCD stands for sequential compression device. This was enhanced further by the sensing of refill time, which resulted in more compression cycles over time. Sequential compression showed hemodynamic superiority compared to a rapid inflation device. Practitioner 1981 225: intermittent pneumatic compression devices. Although peak velocity enhancement was higher with the rapid inflation device, flow augmentation (a product of average blood flow velocity) was comparable (669+/-367 vs 771+/-574 cm/s P=0.223) with the sequential compression device, mainly because the rapid inflation device failed to maintain flow enhancement beyond the initial flow surge. Sustained being applied in the lowest chamber at the ankle, 35 mmHg compression not only may cause discomfort but may result at the calf and 30 mmHg at the thigh. Similarly, the total volume of blood expelled per hour with the sequential compression device was 100% higher than the rapid inflation device (9685+/-5426 vs 4853+/-3658 mL P<0.001). The sequential compression device, by augmenting flow throughout a significantly longer compression period per cycle (10.9 s vs 6.3 s), expelled significantly more venous blood (121+/-68 vs 81+/-63 mL P<0.001). Refill time of the rapid inflation device was shorter in comparison with the sequential compression device (15+/-2.2 vs 25+/-4 s P<0.001), suggesting incomplete vein evacuation. Total and peak volume of blood expelled per hour during compression were calculated using flow data and the individual cycling rate.īoth devices increased venous flow velocity, up to 3.8 times the baseline (all P<0.001). Refilling time was determined from velocity recordings of the common femoral vein. Baseline and augmented flow velocity and volume flow were measured at the level of the common femoral vein, above the saphenofemoral junction. The two devices were tested in 12 normal volunteers in the semirecumbent position using duplex ultrasound. The former, by sensing venous refill time, commences compression when the calf veins are refilled. ![]() Graduated compression stockings and other mechanical compression devices have been shown not to be effective unless they are worn at least 18- 20 hours a day. The aim of our study was to compare the hemodynamic effectiveness of the portable sequential compression device (SCD Express Compression System, Tyco Healthcare Group LP, Mansfield, MA, USA) with a rapid inflation device (VenaFlow, Aircast, Inc, Summit, NJ, USA). Mechanical compression devices should be worn at least 18-20 hours a day to be effective. Sequential leg compression has been previously shown to be superior to uniform compression. ![]()
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Black bird song9/1/2023 ![]() Emerick recalls as being mic'd up separately. McCartney also said the same in The Beatles' Anthology documentary. This tapping "has been incorrectly identified as a metronome in the past", according to engineer Geoff Emerick, who says it is actually the sound of Paul tapping his foot. Īpart from the blackbird, only three sounds were recorded: McCartney's voice, his guitar, and a tapping that keeps time on the left channel. The track includes recordings of a male common blackbird singing in the background. It is a solo performance with McCartney playing a Martin D-28 acoustic guitar. The song was recorded on 11 June 1968 at EMI's Abbey Road Studios in London, with George Martin as the producer and Geoff Emerick as the audio engineer. Composition and recording "Blackbird" includes the sound of a male common blackbird singing Manson interpreted the lyrics as a call to black Americans to wage war on their white counterparts, and instructed his followers to commit a series of murders in Los Angeles in August 1969 to trigger such a conflict. Īlong with McCartney's " Helter Skelter", "Blackbird" was one of several White Album songs that Charles Manson interpreted as the Beatles' prophecy of an apocalyptic race war that would lead to him and his " Family" of followers ruling the US on countercultural principles. However, during an informal rehearsal at EMI Studios on 22 November 1968, before he and Donovan took part in a Mary Hopkin recording session, McCartney played "Blackbird", telling Donovan that he wrote it after having "read something in the paper about the riots" and that he meant the black "bird" to symbolise a black woman. ![]() Writing in the 1990s, Ian MacDonald noted the theory that "Blackbird" was intended as "a metaphor for the black civil rights struggle", but pointed to the composition's romantic qualities, arguing that the early-morning bird song "translates … into a succinct metaphor for awakening on a deeper level". ![]() Īlthough McCartney has been consistent in the meaning, there are still varied interpretations – as a nature song, a message in support of the Black Power movement, or a love song. Angie recalled that McCartney visited the house and sat at Edith's bedside, where Edith told him that she would listen to a bird singing at night. His stepmother, Angie McCartney, has claimed that McCartney wrote it for her elderly mother, Edith Stopforth, who was staying at Jim McCartney's house while recovering from a long illness. In 2018, McCartney further elaborated on the song's meaning, explaining that "blackbird" should be interpreted as "black girl", in the context of the civil rights troubles in southern 1960s US. It's not really about a blackbird whose wings are broken, you know, it's a bit more symbolic. I had been doing some in the last year or so because I've got a poetry book out called Blackbird Singing, and when I would read "Blackbird", I would always try and think of some explanation to tell the people … So, I was doing explanations, and I actually just remembered why I'd written "Blackbird", you know, that I'd been, I was in Scotland playing on my guitar, and I remembered this whole idea of "you were only waiting for this moment to arise" was about, you know, the black people's struggle in the southern states, and I was using the symbolism of a blackbird. In May 2002, following a show in Dallas, Texas, McCartney discussed the song with KCRW DJ Chris Douridas, saying: He has said that he was inspired by hearing the call of a blackbird one morning when the Beatles were studying Transcendental Meditation in Rishikesh, India and also writing it in Scotland as a response to racial tensions escalating in the United States during the spring of 1968. Since composing "Blackbird" in 1968, McCartney has given various statements regarding both his inspiration for the song and its meaning. ![]() The first night his future wife Linda Eastman stayed at his home, McCartney played "Blackbird" for the fans camped outside his house. ![]() McCartney adapted a segment of the Bourrée (reharmonised into the original's relative major key of G) as the opening of "Blackbird", and carried the musical idea throughout the song. The Bourrée is distinguished by melody and bass notes played simultaneously on the upper and lower strings. As teenagers, he and George Harrison tried to learn Bourrée as a "show off" piece. McCartney explained on Chaos and Creation at Abbey Road, aired in 2005, that the guitar accompaniment for "Blackbird" was inspired by Johann Sebastian Bach's Bourrée in E minor, a well-known lute piece, often played on the classical guitar. Problems playing this file? See media help. ![]() Emdash9/1/2023 ![]() ![]() ![]() Ideally, use colons or description lists for separating them. Sometimes writers use em dashes, en dashes, or hyphens surrounded by spaces in lists to separate a title or heading with its description. Turn num lock on, then hold down the left Alt key and type 0150 on the numeric keypad. (Instructions for doing that vary depending on your Linux distribution.) After the Compose key is enabled, you can create an em dash by typing the Compose key followed by two hyphens.Īlternatively, press Control+Shift+U, then let go of those keys, then type 2013, then press either the Return key or the Ctrl/Shift keys. Tip: Recommended: 7:30 AM – 9:15 AM (date and time range)įor more information, refer Dates and times.Įnable the Compose key. Many programs also automatically create an em dash when you type two single hyphens together. Don’t add spaces before and after the en dash. Use an en dash indicate a range of numbers such as values or dates. Although you can use en dashes for these purposes, you can also use hyphens or the word to for numerical ranges. Turn num lock on, then hold down the left Alt key and type 0151 on the numeric keypad.Įn dashes (–) are generally used to indicate a range of numbers, the minus sign, or negative numbers. 114: We can use the word none or N/D (no data), or insert an em dash any of these entries show that we havent simply forgotten to fill the cell.N/A is commonly used for not applicable.Its good practice to footnote N/A or N/D the first time it is used. Note: These Linux options don’t work if you’re signed in to the Linux command line from a remote system using ssh or the like you have to be in a Linux desktop environment. Nagle, Handbook for preparing engineering documents: from concept to completion, 1995, p. (Instructions for doing that vary depending on your Linux distribution.) After the Compose key is enabled, you can create an em dash by typing the Compose key followed by three hyphens.Īlternatively, press Control+Shift+U, then let go of those keys, then type 2014, then press either the Return key or the Ctrl/Shift keys. guion largo loc nom m : Algunas personas usan los guiones largos para diferenciar la información suplementaria en una oración. Algunas personas usan las rayas para diferenciar la información suplementaria en una oración. Avoid using an em dash to indicate empty or unoccupied elements such as text fields, cells, and other values.Įnable the Compose key. em dash n (punctuation mark: long dash) raya nf : Some people use em dashes to separate out subsidiary parts of sentences. Tip: Recommended: If you’re stuck on a particular step, visit the FAQs page-it has a comprehensive list of common errors, problems, and their solutions.ĭon’t use an em dash as a bullet in a list. ![]() AuthorWrite something about yourself. 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