쉐도잉 연습: Nitrates: Nursing Pharmacology - 영상으로 영어 말하기 배우기
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What?
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you Nitrates are medications that come under the umbrella of a larger group called vasodilators, which dilate the walls of blood vessels.
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Nitrates are primarily used to treat angina pectoris, which is pain caused by reduced blood flow to the heart muscle as well as hypertension and heart failure.
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More recently, they've also been approved for the topical treatment of anal fissures.
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The most commonly used nitrates include nitroglycerin, isosorbide dinitrate, and isosorbide mononitrate.
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Out of these, nitroglycerin has a rapid and short -lasting action, so when treating acute anginal pain or hypertension,
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it's typically given through rapidly absorbable routes, like sublingual, oral spray, or intravenously, to bypass the first -pass metabolism in the liver,
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which would slow its absorption.
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For long -term prevention, though, routes of administration can include transdermal patches, topical ointments, or extended -release oral capsules.
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Nitroglycerin can also be administered rectally for the treatment of anal fissures.
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On the other hand, isosorbide dinitrate and isosorbide mononitrate have a longer duration of action and are typically administered orally as tablets,
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or sustained release capsules which makes them useful for the long -term prevention of angina pectoris
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or to treat clients with heart failure.
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Once absorbed into the blood, nitrates quickly get converted into their active form,
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called nitric oxide, Nitric oxide diffuses to the smooth muscle cells of both veins and arteries, causing wall relaxation and vasodilation.
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The result of venous vasodilation is peripheral blood pooling, which in turn decreases the return of venous blood to the heart.
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This way, nitrates predominantly reduce preload, which is the pressure that stretches the heart as it fills with blood from venous return.
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At the same time, arterial vasodilation lowers the systemic vascular resistance, which will also reduce the afterload,
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or the pressure that the heart must work against to eject the blood.
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Ultimately, by reducing preload and afterload, nitrates reduce the amount of work the heart has to do, eventually decreasing the heart's oxygen consumption.
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Nitrates also have a minor effect on the dilation of the coronary arteries, which helps increase oxygen delivery to heart tissue.
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Common side effects of nitrates include headache, dizziness, flushing, nausea, and vomiting.
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Another important side effect of nitrates is orthostatic hypotension, where the blood pressure falls significantly when the client stands up too quickly.
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As a result, these clients could experience lightheadedness or syncope due to decreased blood flow to the brain.
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In addition, clients may experience reflex tachycardia,
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which is caused by the sympathetic system triggering an increase in heart rate in response to the hypotension caused by nitrates, in order to maintain tissue perfusion.
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Now, clients who continuously use nitrates soon develop tolerance to these side effects.
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Unfortunately, clients may also develop tolerance to the therapeutic effects of nitrates, especially with uninterrupted use.
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Clients can prevent this by avoiding using nitrates for several hours each day.
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Finally, nitrates are contraindicated in individuals with hypotension, hypovolemia, severe anemia, and cardiomyopathy.
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Nitrates should be used carefully during pregnancy or breastfeeding, as well as in clients with increased intracranial pressure or cerebral hemorrhage,
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renal or hepatic disease, and syncope.
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As far as drug interactions go, nitrates should never be combined with other substances that cause vasodilation,
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such as alcohol, Medications used to treat erectile dysfunction including sildenafil,
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tadalafil, or vardenafil or antihypertensive agents like beta blockers or calcium channel blockers.
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If taken together, their effects add up and may lead to a steep fall in blood pressure, cardiovascular collapse, and even death.
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Now, before administering a nitrate,
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complete a baseline assessment, including frequency and severity of angina pain and vital signs especially blood pressure.
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Review their health history for angina risk factors, such as hypertension.
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Next, check your client's latest laboratory report including CBC, hepatic and renal function, as well as their lipid profile.
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Then be sure they understand how angina happens, and explain how the medication helps reduce or prevent angina by improving blood flow to the heart.
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Lastly, after administering the nitrate, remain with your client and continuously monitor their vital signs, especially blood pressure.
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Continue to assess for worsening symptoms, such as chest pain and side effects, and for the desired therapeutic response.
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Ok, when teaching your client about sublingual nitroglycerin, explain that nitrates are sensitive to light,
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moisture and heat, so advise them to store their nitroglycerin pills in their original container at room temperature
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but also remind them to carry a small number of their pills with them at all times.
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Teach them that taking a sip of water before putting their pill under their tongue will help it dissolve
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and get into their system faster.
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In addition, let them know that it's normal for them to feel a slight burning
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or tingling under their tongue while the medication dissolves.
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Be sure to remind your client to not swallow the medication
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and instruct them to avoid eating or drinking anything for 15 minutes after administration to ensure the medication is fully absorbed.
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Let them know about common side effects they may experience, such as headache, which can be managed with acetaminophen,
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and orthostatic hypotension, which can increase the risk of falls.
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So teach your client to make position changes slowly, especially if they feel lightheaded.
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Lastly, stress the importance of avoiding other substances that can excessively lower blood pressure, such as alcohol and medications used for erectile dysfunction.
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If your client experiences angina with activity, remind them to take the nitroglycerin prior to precipitating activities or situations,
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such as playing sports or mowing the lawn.
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If they're taking the nitrate for acute angina, instruct them to call emergency services if the pain does not resolve within five minutes after one dose.
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While awaiting emergency care to arrive, let them know that they may take a second and third dose five minutes apart.
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Now, if your client is prescribed transdermal nitroglycerin patches, instruct them to apply a new patch each day on a hairless part of their body.
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To prevent the development of nitrate tolerance, stress the importance of incorporating about 12 hours of nitrate free time every 24 hours, usually during the night.
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For example, if your client has angina with activity, instruct them to apply their patch at 8 a .m and then remove it at 8 p .m.
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Finally, remind your client to take their medication as directed, and warn them that stopping abruptly could result in vasospasm.
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Alright, as a quick recap, nitrates are medications mainly used to treat angina pectoris, hypertension, and heart failure.
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Once administered, nitrates are quickly converted into their active form, nitric oxide, which causes vasodilation and ultimately reduces preload and afterload.
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while improving blood flow through the coronary arteries.
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Clients who are prescribed nitrates should be advised about side effects, including headache, dizziness, flushing, nausea,
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orthostatic hypotension, and reflex tachycardia.
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Nitrates should be avoided in clients with problems such as hypotension and hypovolemia, and they should never be combined with other substances that cause vasodilation,
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such as alcohol or medications for erectile dysfunction.
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Finally, continuous administration of nitrates can lead to tolerance, and clients can prevent this by avoiding using nitrates for several hours each day.
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이 수업에 대하여
이 수업에서는 질산염(nitrates)에 대한 이해를 높이고, 이를 사용하는 방법과 관련된 약리학적 개념을 익힐 것입니다. 이 비디오는 영어 발음 교정 및 영어 쉐도잉(s shadow speak) 연습에 적합하며, 특히 약물의 작용 기전 및 부작용에 대해 배우면서 필요한 전문 용어를 익히는 데 큰 도움이 됩니다. 이를 통해 IELTS 스피킹 준비에 필요한 전문적인 영어 표현을 향상시킬 수 있습니다.
주요 어휘 및 구문
- 혈관 확장제 (vasodilators): 혈관의 벽을 이완시키는 약물 그룹.
- 협심증 (angina pectoris): 심장 근육으로 가는 혈류 감소로 인한 통증.
- 질산글리세린 (nitroglycerin): 협심증 치료에 일반적으로 사용되는 약물.
- 동맥 압력 (afterload): 심장이 혈액을 이송하기 위해 이겨내야 하는 압력.
- 정맥 압력 (preload): 심장이 혈액으로 채워질 때 스트레스를 받는 압력.
- 체위성 저혈압 (orthostatic hypotension): 급격히 일어설 때 혈압이 떨어지는 현상.
- 내성이 생기다 (develop tolerance): 약물에 대한 지속적인 사용으로 효과가 감소하는 상태.
연습 팁
이 비디오의 내용을 효과적으로 연습하려면 영어 쉐도잉 기법을 활용해보세요. 비디오의 속도는 비교적 빠르므로, 처음에는 느린 속도로 따라 해보고 익숙해지면 점점 속도를 높여보세요. 먼저 주요 어휘와 구문을 반복해서 듣고, 발음을 교정한 다음, 전체 문장을 따라 말하는 연습을 진행하세요. 영어 발음 교정을 위해, 발음의 정확성을 항상 고려하고 음성을 녹음하여 스스로 점검하는 것도 좋은 방법입니다. 또한, IELTS 스피킹 준비를 위해 각 문장에서 중요한 표정을 짓고 자신감을 가지고 말할 수 있도록 연습하세요. 이를 통해 효과적인 shadowspeaks 학습이 이루어질 것입니다.
이 영상의 문법
화자가 가장 많이 쓰는 문형을 영상 속 실제 표현과 함께 정리했습니다.
| 문형 | 영상 속 표현 |
|---|---|
| “used to” used to + 동사 — 지금은 아닌 과거의 습관이나 상태 | used to treat |
| 수동태 be + 과거분사 — 누가 하는지보다 무슨 일이 일어나는지에 초점 | been approved · be administered · is caused |
| 관계절 who / which + 절 — 사람이나 사물에 대한 추가 정보 | pectoris, which is · capsules which makes · preload, which is |
쉐도잉이란? 영어 실력을 빠르게 키우는 과학적 방법
쉐도잉(Shadowing)은 원래 전문 통역사 훈련을 위해 개발된 언어 학습 기법으로, 다언어 학자인 Dr. Alexander Arguelles에 의해 대중화된 방법입니다. 핵심 원리는 간단하지만 매우 강력합니다: 원어민의 영어를 들으면서 1~2초의 짧은 지연으로 즉시 소리 내어 따라 말하는 것——마치 '그림자(shadow)'처럼 화자를 따라가는 것입니다. 문법 공부나 수동적인 청취와 달리, 쉐도잉은 뇌와 입 근육이 동시에 실시간으로 영어를 처리하고 재현하도록 훈련합니다. 연구에 따르면 이 방법은 발음 정확도, 억양, 리듬, 연음, 청취력, 말하기 유창성을 크게 향상시킵니다. IELTS 스피킹 준비와 자연스러운 영어 소통을 원하는 분들에게 특히 효과적입니다.