Shock 1, Definition and Physiology

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This is the 1st of 14 sections posted on RU-vid. Together they form a complete three hour lecture series on shock. This lecture is designed for students of nursing, medicine and related disciplines. The aim is to understand the physiology and pathophysiology, so we can apply these principles to patient care.
Shock
A state with significant reduction in systemic tissue perfusion, resulting in decreased delivery of oxygen and reduced removal of waste products, leading to tissue injury.
Blood pressure = cardiac output x peripheral resistance
Cardiac output is dependent on venous return
Cardiac output = heart rate x stroke volume

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9 май 2013

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Комментарии : 38

@sarahsahibqran2198 4 года назад

Have never watched someone explaining medicine better than you, thank you so much for sharing your talent!

@Angeleestars123 7 лет назад

Absolutely brilliant, you are a rock star of anatomy, physiology and pathophysiology. HUGE help for a student nurse.

@madthewirdo4236 4 года назад

Thank you for sharing your knowledge, you guys/gals work so hard to become physicians. Something you really have to want deep down inside.

@malisaskeete551 8 лет назад

Some people were built to teach and you're one of them.

@GiulioMD91 7 лет назад

Congrats! You are precise, exhaustive and clear, and that is said by an italian student. Even not being mother language I found your lectures so clear, simple and exhaustive, that I will indeed subscribe. Thank you for your hard work sir.

@lisiuskamati1071 5 лет назад

I am so grateful that I have found you @Dr John Campbell. You are the best.

@thisismyyear6463 5 лет назад

You are amazing and I'm soooo grateful that I was led to just click on one of your videos!! Thank you for doing what you do! You are gifted!!!!

@deepaksingh-ut7lh 4 года назад

Simple & effective sir

@1953sharoha 5 лет назад

You are so good in wgat you do . I am Enlightened.THANK you .

@MrAhmed091 9 лет назад

Really it's such an Amazing explanation..thanks Doctor John!

@FIGJAMBABY 8 лет назад

awesome! Thank you so much for your explanations, very easy to understand :) thank you Dr John Campbell :)

@nadakudurudeepika8179 5 лет назад

Thank you so much it really helped me a lot... I liked ur sharing attitude👍👍👍

@rockernoobsthurein 11 лет назад

Good job, Mr Campbell! Thanks a lot!

@jtaylor368 11 лет назад

Thanks so much, for putting these together!

@Gonthor1000 7 лет назад

Thank you for the info,

@nadagranger7939 4 года назад

amazing explanation, thanks alot to you, dr

@edwinml9860 3 года назад

Thank you for this description

@anhphan-gw9pt 4 года назад

I love this lecture!From Viet Nam with love!

@chloefoon5992 3 года назад

Your videos are great!

@leezecruz1647 8 лет назад

thank you John

@jadewilson7412 6 лет назад

Love your work John!

@Campbellteaching 6 лет назад

Thanks for watching Jade

@noelmelecio7268 2 года назад

Very informative!!

@cu4034 6 лет назад

Thank you 🤓

@lovemoreluzu4134 2 года назад

Very helpful 🔥

@Sherirose1 6 лет назад

Brilliant

@Ambika_Ayurveda 3 года назад

Thank you sir

@roesslerp1 8 лет назад

Pressure is not a driving force, it is not even a force. It is a result of the heart pumping against a resistance - it is not a primary factor but rather a secondary result. Blood pressure can be increased by vasoconstriction but this will result in increased resistance and decreased blood flow. It is the flow that is important not the pressure. The lungs carry the exact same blood flow (5 L/min in adult) as the systemic circulation but the pressure is only one-fifth that of the systemic. Blood flow is important, blood pressure is what can be measured but it is not the driver of flow.

@kristinawolf7661 4 года назад

Respect Sir

@salehaparveen9225 3 года назад

Why in case of Shock sympathic system is not working so that there will be Vasoconstriction increase in peripheral resistance thus bp increase?

@kas06chi18 11 лет назад

If i buy your dvds will these vids be included?

@Campbellteaching 5 лет назад

they are all on USB drive now

@tj1990 8 лет назад

I'm suffering. What should i do? I got fired from my job and it triggered this entire event. I haven't slept, i've been vomiting, my pulse feels very weak, im clamy, i feel cold. Im shaking, crying, and things are not making any sense. please help.

@Campbellteaching 8 лет назад

+tj1990 Dear tj, Im so sorry yo have been suffering in this way, you describe feelings which are truly horrible. The features you describe are all consistent with human distress. I pray that the Lord our God will bless you and keep you. In addition, I think we need to realise that depression is a genuine problem with the human brain, and is is worth considering medication, if your doctor thinks you need this. I wish you well, John

@tj1990 8 лет назад

Dr. John Campbell Thanks for the reply. Its been a few months. To follow up, I checked myself into a hospital the next day. I got a chance to recover and get some help. I got treatment, still ongoing. I since got another job and it really wasn't the end of the world. I should have thought about how employable i was, and how many skills I had. I really wasn't without a job very long at all. I just had a tough upbringing and grew up in poverty. When i finally felt like i had somewhat escaped it, it seemed like it was just going to swallow me back up and i was going to be back to living on the streets and doing anything to survive. Luckily, and probably through the grace of God, everything turned out fine. Again, thanks for the reply. And you have a great youtube channel.

@Campbellteaching 8 лет назад

+tj1990 Thanks for letting me know tj, you are right, sometimes it is hard to examine ourselves objectively, with sober judgement. Clearly, you are very employable, but were unable to appreciate this for a short time. I delighted you are now working again.