跟讀練習: Understanding Chronic Obstructive Pulmonary Disease (COPD Explained Clearly) - 通過影片學習英語口語
選擇練習模式
每種模式都會開啟全屏練習室。
112 句
如果句子過短或過長，請點選 Edit 進行調整。
1
COPD stands for chronic obstructive pulmonary disease,
2
a condition characterized by persistent irreversible limitation of airflow through the lungs.
3
In normal circumstances, air is brought into the lungs by passing through the conducting zone of the airways,
4
which extends from the nose to the bronchioles, before getting to the respiratory zone, where gases are exchanged at the alveoli.
5
In inspiration, the diaphragm and intercostal muscles contract, causing a flattening of the diaphragm and elevation of the chest wall respectively.
6
This increases the volume of the lungs, causing pressure within them to fall, and so air is drawn in.
7
Exhalation features is the opposite.
8
The diaphragm relaxes and elevates, the intercostal muscles relax, and the lung volume reduces,
9
causing pressure to rise and forcing air out.
10
In COPD, there is limitation to this airflow, which happens mostly as a result of two main mechanisms.
11
The first is loss of elastic recoil, and the second is narrowing of the airways.
12
A big driver for both of these is inflammation, which is generated within the lungs as a result of exposure to inhaled toxins,
13
most commonly cigarette smoking.
14
Neutrophils and macrophages are recruited and secrete proteases like neutrophil elastase and matrix metalloproteinases,
15
which are enzymes involved in breaking down proteins as part of normal repair.
16
These are usually counterbalanced by antiproteases, like alpha -1 antitrypsin.
17
But as a result of the chronic inflammation, there is excess protease activity causing destruction of the lung tissue.
18
This leads to less support for the alveoli and so a reduced elastic recoil, causing them to enlarge, giving emphysema.
19
It also gives a tendency for the small airways to collapse during expiration due to the reduced structural support.
20
When this happens, air is effectively trapped, eventually causing hyperinflation.
21
The inflammation and recruitment of neutrophils increases oxygen -free radicals, and ultimately also causes mucosal edema,
22
mucus hypersecretion, and bronchoconstriction, causing the airways to be narrower, and so have increased resistance to airflow.
23
These changes are also accompanied by fibrosis, and tend not to be reversible.
24
Patients with COPD have impaired mucociliary clearance and so are more prone to having infections,
25
and repeating infections increases the inflammation and so contributes to the disease progression.
26
Together, these two mechanisms mean an increase in the work of breathing, which gives reduced ventilation of the alveoli.
27
This leads to hypoxia and hypercapnia, meaning low levels of oxygen and high levels of carbon dioxide, respectively.
28
The principal cause of COPD is exposure to inhaled chemicals,
29
primarily smoking, where it is thought that up to 70 % of cases are due to cigarette smoking.
30
Other exposures, such as pollution, mineral dust or chemicals, also increase the risk, but is not as commonly the cause as smoking.
31
Genetics are also a cause, with many genetic variants showing increased likelihood of developing COPD,
32
but in particular to remember is alpha -1 antitryptin deficiency, again leading to a relative excess of protease activity.
33
The symptoms of COPD are usually gradual in onset
34
and typically appear in those with over a 20 -pack year history of smoking.
35
Dyspnea, meaning shortness of breath, is the most common finding, that is typically persistent and worsening.
36
Initially getting worse with exercise, but as the disease progresses, it may even be present at rest.
37
A cough is also common, which may be productive or non -productive,
38
although 30 % of patients do present with a chronic productive cough.
39
In this instance, sputum characteristics like colour and volume can be useful markers for exacerbations.
40
Traditionally, for a diagnosis of chronic bronchitis to be made,
41
the cough must be present for more than three months in two consecutive years with no other explanation.
42
Recurrent wheezing and respiratory tract infections, fatigue, weight loss, and chest tightness are other common findings.
43
A classic description of the two main phenotypes in COPD is the blue bloaters and pink puffers,
44
to describe chronic bronchitis and emphysema.
45
This refers to blue bloaters being those with predominantly features of productive cough,
46
dyspnea, obesity, and cyanosis as a result of reduced oxygen levels in the blood,
47
and pink puffers, characterized by a normal or thin body habitus and pursed lip breathing,
48
that helps prevent the bronchioles from collapsing, and so improving ventilation.
49
But in reality, remember that most patients have an overlap of both.
50
Physical exam findings are not diagnostic or specific, but they can include tachypnea,
51
meaning a raised respiratory rate and use of accessory muscles.
52
Barrel chest is also common due to the hyperinflation
53
and on auscultation there may be coarse crackles coming from reopening of collapsed airways and the presence of mucus.
54
In cases where hypercapnia is present they can also be asterixis where there is a flapping tremor of the arms.
55
Complications include acute deteriorations called exacerbations are defined as a worsening
56
of the person's symptoms from their usual stable state with a time frame of within 14 days being used to define this.
57
They can often happen in the context of recurrent infections but other causes include pulmonary embolisms,
58
heart failure, arrhythmias and myocardial infarctions.
59
Pulmonary hypertension may develop due to chronic hypoxemia, where the lung vasculature responds and remodels,
60
which itself can lead to right -sided heart failure.
61
Pneumothorax can also be a result of rupture of the bullae.
62
Diagnosis is suspected from the clinical history, but is made by demonstrating the presence of an obstructive pattern on spirometry that is irreversible.
63
The global initiative for COPD, known as GOLD criteria include a post -bronchodilator forced expatry volume
64
in one second to forced vital capacity ratio of less than 0 .7.
65
The FEV1 can also be used to indicate the severity of obstruction, with more than 80 % of predicted value being the mildest form,
66
while less than 30 % indicates very severe COPD.
67
The COPD assessment test, known as the CAT score, can be used to assess symptom severity.
68
The number of exacerbations in the past can help produce future exacerbation risk.
69
Based on these two features, patients are divided into gold group A, B or E.
70
Group A reflects low symptom burden, so a CAT score less than 10, and one or less moderate exacerbations per year.
71
Group B is for increased symptom burden, with CAT scores 10 or above, but still less than one exacerbation per year.
72
And group E, if there are two or more exacerbations per year, we'll see how this impacts treatment shortly.
73
Additional testing can include pulse oximetry,
74
An ABG may be done to rule out respiratory failure and to help assess for long -term oxygen therapy.
75
Other blood tests can include a full blood count to look for anemia or polycythemia as a result of chronic hypoxemia.
76
Chest x -ray is not diagnostic but features an increased anterior -posterior ratio,
77
large intercostal spaces and a flattened diaphragm which are suggestive of COPD.
78
Genetic testing is not routinely done in practice,
79
but patients under the age of 45 years or in rapidly progressing cases should particularly be screened for alpha 1 antitrypsin deficiency.
80
In acute exacerbations, treatment generally involves the use of short -acting beta agonists like salbutamol,
81
either inhaled or through a nebulizer, and a short -acting muscarinic antagonist, like hypotropium bromide, again inhaled or nebulised.
82
In general, most patients with COPD will have target oxygen saturations of 88 to 92.
83
This is because excess oxygen may suppress the drive for ventilation and precipitate hypercapnia and type 2 respiratory failure.
84
Alongside these, a systemic steroid is given, like prednisolone or hydrocortisone, And antibiotics may be used if an infection is suspected.
85
Ventilation may be required in some cases, especially type 2 respiratory failure where non -invasive ventilation may be used.
86
The overall aims of treatment in stable COPD are to reduce the symptom burden, as well as number and severity of exacerbations,
87
as well as reducing mortality.
88
First -line measures include smoking cessation or removal of the exposure to the damaging substance,
89
shown to be the factor with the greatest capacity to influence the course of the disease.
90
Pulmonary rehabilitation includes aerobic exercise, strength training and education and vaccines,
91
for example flu, pneumococcal, and more recently COVID vaccines, are also first -line measures.
92
The pharmacological management involves beta -agonists that increase intracellular cyclic AMP and lead to smooth muscle relaxation,
93
while muscarinic antagonists block cholinergic receptors on the respiratory smooth muscle, and so also promote smooth muscle relaxation.
94
These are usually inhalers and so bear in mind that technique of using them is incredibly important.
95
Looking at the initial treatment based on the gold groups we have bronchodilators in group A
96
which can include short or long -term options, more specifically short or long -acting beta -2 agonists like salbutamol
97
and formotrol or short or long -acting anti -muscarinic antagonists like hypertropium or thiotropium.
98
Long -acting agents are more commonly used, but short -acting therapy should be available to all patients for immediate relief.
99
Group B instead typically have a combination of long -acting muscarinic antagonists and long -acting beta agonists,
100
but may have monotherapy, while group E usually have a combination of LAMA and LABA.
101
Inhaled corticosteroids are not generally encouraged but may be added
102
if the eosinophil count is above 300 cells per microlitre initially or above 100 on follow -up.
103
A history of asthma or multiple severe exacerbations are also indications.
104
Remember that these are gold recommendations and practice in different countries may vary from this.
105
Depending on the response to therapy, patients can be stepped up through this regime and
106
if there are ongoing exacerbations on triple therapy macrolide antibiotics prophylactically
107
or roflumilast a phosphodiesterase 4 inhibitor can be added it prevents the breakdown of cyclic amp
108
and can be added if the fev1 is less than 50 percent in cases of predominant bronchitis with troublesome mucus production,
109
agents like Erdosthine and Cabocysteine can be used to help break it down.
110
Long -term oxygen therapy is recommended in stable patients with an arterial partial pressure of oxygen below 7 .3 kilopascals
111
and up to 8 kilopascals if there is evidence of cardiac failure or polycythemia.
112
Surgical options include bulectomy, volume reduction surgery and transplant.
同頻道
FOR YOU
推薦影片
C11
43 句
Understanding COPD
Daily ConversationUniversity StudentsWorking Adults
C12
15 句
CO2 Fractional Laser Explained - Acne Scar removal, Skin Rejuvenation｜London
Daily ConversationUniversity StudentsWorking Adults
C11
239 句
4 How to use PCR and qPCR
Daily ConversationUniversity Students
C11
8 句
Clinical Cuts - Chronic obstructive pulmonary disease (COPD)
Daily ConversationUniversity Students
C12
39 句
Immunology of the rheumatoid joint
Daily ConversationUniversity Students
C12
148 句
Statin Misinformation: Mayo Clinic Radio
Daily ConversationUniversity StudentsWorking Adults
C11
229 句
Chronic Obstructive Pulmonary Disease (COPD) - Phần 1
Daily ConversationUniversity Students
C12
100 句
Epithelial Tissue
Daily ConversationUniversity Students
C13
55 句
Pneumothorax - causes, symptoms, diagnosis, treatment, pathology
Daily ConversationUniversity Students
C1192 句
Other Corneal Disorders - CRASH! Medical Review Series
Daily ConversationUniversity Students
C11
182 句
An Introduction to Flashover - Episode 9
Daily ConversationUniversity StudentsWorking Adults
本課的詞彙與口語要點
這節口語課以影片“Understanding Chronic Obstructive Pulmonary Disease”為素材。 影片中反覆出現的詞有：Copd, exacerbation, include, patients, oxygen。 這段影片共有 112 個句子、1650 個單詞可供跟讀。 講話部分時長為 12:53。 說話人語速平穩，每分鐘約 128 個詞，很適合跟讀。 只有 69% 的單詞屬於英語最常用的 3,000 詞，詞彙難度較高。
影片中的重點詞彙
影片中 15 個值得學習的單詞，附發音和釋義：
| 單詞 | 發音 | 釋義 |
|---|---|---|
| oxygen 名詞 | /ˈɑksɪd͡ʒən/ | 氧 |
| chronic 形容詞 | /ˈkɹɑ.nɪk/ | 慢性 |
| lung 名詞 | /ˈlʌŋ/ | физы, 肺 |
| respiratory 形容詞 | /ɹɪˈspɪ.ɹət.ə.ɹi/ | 呼吸的 |
| muscle 名詞 | /ˈmʌs.əl/ | 肌肉, 筋肉 |
| symptom 名詞 | /ˈsɪm(p)təm/ | 症狀 /症狀, 病徵 /病徵 |
| infection 名詞 | /ɪnˈfɛkʃən/ | 傳染 /傳染 |
| ventilation 名詞 | /ˌvɛntɪˈleɪʃ(ə)n/ | 通風 /通風, 通氣 /通氣 |
| productive 形容詞 | /pɹəˈdʌk.tɪv/ | 生產的 /生產的 |
| beta 名詞 | /ˈbeɪtə/ | 貝塔 /貝塔 |
| inflammation 名詞 | /ɪnfləˈmeɪ̯ʃən/ | 炎症, 發炎 /發炎 |
| stable 名詞 | /ˈsteɪ.bəl/ | 馬廄, 馬棚 /馬棚 |
| smooth 形容詞 | /smuːð/ | 平穩 /平穩, 順利 /順利 |
| commonly 副詞 | /ˈkɑmənli/ | 通常 |
| alpha 名詞 | /ˈæl.fə/ | 阿爾法 /阿爾法, 阿伐 |
影片中出現的短語動詞
| 單詞 | 釋義 |
|---|---|
| break down 動詞 | 壞了 /壞了, 出故障 |
| follow up 動詞 | 跟進 /跟進 |
| rule out 動詞 | 排除 |
影片中的語法
說話人最常用的結構，並附上影片中的原話：
| 結構 | 影片中的用法 |
|---|---|
| 被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的 | is brought · are exchanged · is drawn |
| 現在完成時 have/has + 過去分詞 — 過去發生但與現在仍有關聯的事 | have increased · have impaired |
| 定語從句 who / which + 從句 — 補充說明人或事物 | inflammation, which is · diaphragm which are |
需要注意的發音
- “th” 音: smooth /smuːð/, breathe /bɹiːð/, thin /ˈθɪn/, polycythemia /ˌpɒlɪsaɪˈθiːmɪə/, arrhythmia /eɪˈɹɪð.mɪ.ə/
- “sh” 和 “zh” 音: infection /ɪnˈfɛkʃən/, ventilation /ˌvɛntɪˈleɪʃ(ə)n/, inflammation /ɪnfləˈmeɪ̯ʃən/, exposure /ɪkˈspəʊ.ʒə(ɹ)/, ratio /ˈɹeɪ.ʃoʊ/
- 長單詞——注意重音位置: respiratory /ɹɪˈspɪ.ɹət.ə.ɹi/, ventilation /ˌvɛntɪˈleɪʃ(ə)n/, inflammation /ɪnfləˈmeɪ̯ʃən/, severity /səˈvɛɹ.ə.ti/, respectively /ɹɪˈspɛktɪvli/
中文母語者容易讀錯的音：
- /v/ — 不要讀成 /w/，上齒輕觸下唇: ventilation /ˌvɛntɪˈleɪʃ(ə)n/, productive /pɹəˈdʌk.tɪv/, severity /səˈvɛɹ.ə.ti/, respectively /ɹɪˈspɛktɪvli/, involve /ɪnˈvɑlv/
- 詞尾子音 — 要讀清楚，後面不要加母音: chronic /ˈkɹɑ.nɪk/, productive /pɹəˈdʌk.tɪv/, cough /kɔf/, excess /ˈɛksɛs/, indicate /ˈɪndɪˌkeɪt/
- /r/ 和 /l/ 的區別: respectively /ɹɪˈspɛktɪvli/, relaxation /rᵻˌlækˈseɪ.ʃən/, primarily /ˈpɹaɪ.mə.ɹə.li/, relative /ˈɹɛl.ə.tɪv/, shortly /ˈʃɔɹtli/
如何用這段影片練習
- 先完整聽一遍影片，不要開口，記下不認識的單詞。
- 用正常速度逐句跟讀，每句重複到你的節奏與說話人一致為止。
- 錄下自己的聲音並與原聲對比，特別注意 oxygen, chronic, lung 這類單詞。
什麼是跟讀法？
跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。