跟读练习: How to Treat Hyperkalemia Step-by-Step 💊 - 通过YouTube学习英语口语
C2
跟读控制
0% 已完成 (0/53 句)
Once we've determined the etiology of our patients hyperkalemia, it's going to be important to make sure that we can treat them urgently and expeditiously.
⏸ 已暂停
速度:
重复次数:
等待模式:
字幕同步:0ms
所有句子
53 句
1
Once we've determined the etiology of our patients hyperkalemia, it's going to be important to make sure that we can treat them urgently and expeditiously.
2
So there's a couple of different things we want to keep in mind.
3
Number one.
4
We want to potentially antagonize the membrane effects of potassium with calcium if we're worried about cardiac dysrhythmias.
5
Number two, we can drive the extracellular potassium into cells.
6
And number three, we want to remove that excess potassium from the body.
7
So let's talk a little bit more about antagonizing membrane effects of potassium with calcium.
8
This is really only going to be reserved for patients who have ECG changes or an acute rise in serum potassium.
9
And what I want to tell you is that this does absolutely nothing for removing potassium.
10
This is only to protect cardiac myocytes.
11
We can use calcium chloride or calcium gluconate, and the mechanism and when we think about in terms of what happens hyperkalemia induces the depolarization of the resting membrane potential, that leads to inactivation of the sodium channels in a decreased membrane excitability.
12
So calcium antagonizes this membrane affect.
13
The mechanism is not well understood.
14
But again, what I want to underscore here is that this is to protect cardiac myocytes.
15
It does nothing in efforts to remove excess potassium from the body.
16
So the next thing we want to think about in terms of the treatment of hyperkalemia, and what we have in our armamentarium is driving the extracellular potassium into cells.
17
So we can do this by using insulin.
18
So remember what insulin does it's going to cause uptake of potassium into the cell by stimulating the activity of the sodium-potassium ATPase.
19
Now if we're going to give this as a therapy for hyperkalemia, it's going to be important to give it with glucose if our patients are normal glycemic.
20
We can also use beta-2 agonists like Albuterol and terbutaline.
21
This also stimulates the sodium-potassium ATPase, but it does so through a different mechanism than insulin.
22
It actually works through cyclic-AMP.
23
Therefore when you use beta agonists along with insulin, it provides a synergistic effect, and it can actually lower potassium by about 1.2 to 1.5 milli equivalents when used together.
24
So finally, we're left with our last category, which is removing excess potassium from the body.
25
There's a couple of different ways that we can do this.
26
Number one is diuretics.
27
Remember Loop Diuretics and thiazide diuretics.
28
We said by that mechanism of an increase in distal delivery of sodium mediates potassium e-flux into that tubular fluid.
29
We can use these therapies in patients who are relatively stable and long-term out patients who have chronic kidney disease.
30
Loop Diuretics can also be effective in the short term when combined with saline to maintain that distal delivery of sodium and distal tubular flow, but we rarely do this.
31
Another mechanism for potassium removal include using cation exchange resins.
32
This includes sodium polystyrene sulfonate otherwise known as kayexalate.
33
This is an exchange resin that will take a potassium in the gut and release sodium.
34
Now most preparations that are used are prepared using sorbitol.
35
That's an osmotic laxative which we'll also add to the mechanism of potassium excretion.
36
But what you need to keep in mind is that that's orbital component can actually lead to intestinal necrosis.
37
So we have to be very careful about using this medication certainly in our surgical patients who are at highest risk.
38
There are other cation exchange resins available too.
39
Paitromir, also known as Veltessa.
40
This takes up potassium and exchange for calcium in the colon.
41
And likely, in the long term this will replace sodium polystyrene sulfonate.
42
Another one that's new to the market is zirconium cyclosilicate.
43
And this is something that will exchange both sodium and protons for potassium during the intestinal transit.
44
Again, this will likely replace sodium polystyrene sulfonate in the long term.
45
Finally when we're thinking about potassium removal, probably the most effective way of moving potassium urgently is through dialysis.
46
And this is warranted when the prior mechanisms or measures are insufficient to correct the hyperkalemia.
47
Or if for example, somebody is expected to have a massive increase in potassium released either because of rhabdomyolysis or tissue breakdown.
48
Hemodialysis is going to be the preferred modality because it can remove up to about 25 to 50 Milli equivalents of potassium per hour.
49
And it's certainly the treatment of choice in our patients who have end-stage renal disease.
50
We also want to think about treating reversible causes.
51
So if a patient is on a drug, that's causing hyperkalemia.
52
We want to discontinue that drug.
53
And finally in our patients who are volume depleted, we want a volume expand them so that we can increase that distal delivery of sodium.
App Store 和 Google Play 评分 4.9/5
Shadowing English
移动端
随时随地使用 Shadowing English 应用学习英语。今天就提高您的沟通技巧！
跟踪您的学习进度
AI 评分和纠错
丰富的视频库
关于本课
在本课中，学习者将练习医学相关的英语表达，尤其是针对高钾血症（hyperkalemia）的治疗方法。通过观看视频并学习讲解，您将能够掌握如何描述治疗过程中的重要步骤和专业术语。这对于希望提升医学英语口语的学习者，尤其是准备雅思口语练习的学员，将大有裨益。
关键词汇与短语
- 高钾血症 (Hyperkalemia)
- 心律失常 (Cardiac dysrhythmias)
- 钙 (Calcium)
- 胰岛素 (Insulin)
- 利尿剂 (Diuretics)
- 钠-钾 ATP酶 (Sodium-potassium ATPase)
- 肾透析 (Dialysis)
- 阴离子交换树脂 (Cation exchange resins)
练习技巧
在视频中，讲解的速度适中，但专业术语及表达方式可能对初学者有一定挑战。建议您在观看过程中，进行以下两项练习:
- 首先，随视频进行影子练习。重复讲解者的每一句话，尝试捕捉他们的语音语调。特别注意专业术语的发音，以强化记忆。
- 其次，停下视频并对此视频内容进行简短复述。尝试用您的话总结治疗高钾血症的步骤，使用上述关键词汇。这样可以有效提升您的英语口语练习能力。
通过这种方法，您将能够更好地理解医学英语的使用场景，并为将来的专业交流做好准备。同时，可以在看YouTube学英语的过程中，不断提高您的表达能力。
什么是跟读法？
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。