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Why Don't Vasopressors Work In Acidosis

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Please watch: "Video Course for FINAL MEDICAL EXAMS!" https://www.youtube.com/watch?v=H0oET... --~-- Raise your blood pressure with this whirlwind tour of one of the most common inotropes, noradrenaline (or norepinephrine for non-UK patrons!) What it is, Mechanism of Action, Uses, Metabolism, Excretion and Effects in the Body!

Noradrenaline - Deranged Physiology

Noradrenaline is an endogenous catecholamine, a sympathomimetic drug with a strong alpha-1 receptor selectivity. This chapter is a tribute to it, as it is the true workhorse of intensive care, and a drug with which one ought to become intimately familiar. It is the gateway drug to understanding the effects of catecholamines. Chemical structure and chemical properties of noradrenaline Noradrenaline is the prototypical alpha-agonist. The relationship of its structure to its function is discussed elsewhere. The hydroxyl group on its beta-carbon increases its overall potency, and the absence of alkyl substitutes on the amine group gives it a degree of alpha-1 selectivity, but takes away beta-activity. The Australian variety (Levophed) arrives in your hands as a 2ml ampoule, containing 2mg of noradrenaline. It has a pH of about 3.5-4.0. In order to make it isotonic, Hospira thoughtfully provides 8mg of sodium chloride per ml, which equates to a concentration of about 136 mmol/L. Additionally, sodium metabisulfite (0.2mg/ml) is added as an antioxidant; as far as I can tell it plays no real role in the ensuing discussion. The importance of acidic pH for noradrenaline preservation Why doe Continue reading >>

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  1. Melody • Tue

    Ketogenic Diet and late period?

    Hey ladies! Has anyone done the ketogenic diet? Ive been doing it just over 2 weeks, (started jan30) I have lost 10 lbs but am almost a week late. Of course its possible to be pregnant but we aren't trying so I'm thinking the diet is causing the delay...anyone else have period changes with this diet?

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Lactic Acidosis Treatment & Management: Approach Considerations, Sodium Bicarbonate, Tromethamine

Author: Kyle J Gunnerson, MD; Chief Editor: Michael R Pinsky, MD, CM, Dr(HC), FCCP, MCCM more... Treatment is directed towards correcting the underlying cause of lactic acidosis and optimizing tissue oxygen delivery. The former is addressed by various therapies, including administration of appropriate antibiotics, surgical drainage and debridement of a septic focus, chemotherapy of malignant disorders, discontinuation of causative drugs, and dietary modification in certain types of congenital lactate acidosis. Cardiovascular collapse secondary to hypovolemia or sepsis should be treated with fluid replacement. Both crystalloids and colloids can restore intravascular volume, but hydroxyethyl starch solutions should be avoided owing to increased mortality. [ 21 ] Excessive normal saline administration can cause a nongap metabolic acidosis due to hyperchloremia, which has been associated with increased acute kidney injury. [ 32 ] Balanced salt solutions such as Ringer lactate and Plasma-Lyte will not cause a nongap metabolic acidosis and may reduce the need for renal replacement therapy; however, these can cause a metabolic alkalosis. [ 33 ] No randomized, controlled trial has yet est Continue reading >>

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  1. MathWiz

    I wasn’t sure which section I should post this in, my strategy is what I call the 4–2–1 plan, I fast 2 day non consecutive days a week, eat a low carb but not calorie restricted diet 4 days a week to keep the fat burning benefits of ketosis going and then I give myself 1 day a week to indulge and eat whatever I want, usually a Saturday pasta dinner and wonderful dessert. I also walk 4 to 6 miles a day during the week and 10 to 12 miles on Saturday.
    Low Carb plans such as Atkins can be very effective for some people including me, many people who start a low carb diet experience get what’s called the “ketosis flu” or the “induction flu” in the first few days while the body is adapting to burning ketones instead of glucose.
    The basic symptoms are:
    – Headaches
    – Nausea
    – Upset stomach
    – Lack of mental clarity (brain fog)
    – Sleepiness
    – Fatigue
    It’s called the “ketosis flu” for a reason: you feel sick. I’ve gone through it and it wasn’t a pleasant experience. Fortunately it only lasted 2 days but then suddenly I woke up feeling much better, less hungry and my energy level was really high and consistent throughout the day!
    The first time I thought to myself: “What the heck am I doing? I feel like I’m going to die!” but I persevered and when it was over I didn’t regret a thing because what I had gained mentally and physically was 100% worth it.
    For those of you that are going through the ketosis flu, don’t give up! I know you feel like it’s never going to get better but stick with it and you´ll be so happy you did! I’m telling you, waking up refreshed for the first time in years, not getting the afternoon “blah” feeling and stuffing my face with carbs to try to boost my energy is the best side effect of the low carb diet I’ve experienced. Okay, losing weight while eating good food, feeling full and satisfied is great too.
    First you have to understand why your body is reacting this way. Your body’s been burning glucose for energy so it’s basically full of enzymes that are waiting to deal with the carbs you eat, but now the body needs to make new enzymes that burn fat for fuel instead of carbs, and the transition period causes the flu-like symptoms.
    There are some things you can do to lessen the symptoms of the ketosis flu and to make it go away sooner (to force the body to transition sooner) Ok, let’s get to the good part – what to do:
    First of all – you’re probably dehydrated. Drink PLENTY of water while you’re on a low carb diet, and then drink some more.
    Watch your electrolytes. When the body is getting rid of excess insulin from your former carb-crazy diet you´ll lose lots of fluids that have been retained in your body. This causes the rapid weight loss most people see in their first few days of ketosis, it’s mostly water, sorry. When you lose all the retained water you also lose electrolytes like sodium, magnesium and potassium. When you’re lacking them you´ll feel like crap so when you’re feeling really ill on the ketosis flu try things like chicken/beef broth and look for foods rich in these minerals. Take a multi-vitamin and a multi-mineral.
    Ok, here is where people throw the red flag – Eat more fat – Yup, I said MORE fat. Have some butter, just not on a roll, eat some bacon and eggs for breakfast, just skip the potatoes and toast. This will force your body to hurry up the transition. You´ll think this is crazy and think you´ll never get lose weight eating this way, but you will.
    Don’t eat too much protein – The body can transform protein into glucose so if you eat too much of it in the first days it will slow down the transition. Go for fatty meat and cheese if you can, add fat to protein shakes etc.
    Drink water, replenish electrolytes (sodium, magnesium, potassium) with food and supplements, drink broth, eat fat and not too much protein.
    I hope this helps, and have a great day
    Charles

  2. rockyromero

    @mathwiz
    ” Take a multi-vitamin and a multi-mineral.”
    I have been forgetting to take a multi-vitamin on fast days. Thanks for the reminder.
    “Eat more fat – Yup, I said MORE fat. ”
    I will have avocado more often.

  3. AussieJess

    Thanks for that info, very interesting

  4. -> Continue reading
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Diabetes test, M&Ms bought by sketchy dude and Boulder Walmart

Vasopressin - Deranged Physiology

This chapter is a summary of the pharmacological properties of vasopressin, with a focus on its use as a vasoactive infusion. Now, when one normally calls something a "summary", one implies that the information is sensibly condensed into several small easily digestible snack-like pieces. This definition cannot apply to the following, which more closely resembles a multiple-course degustation banquet, a structured feast the excesses of which end in a messy pile of bloated drunks. Some of the information is repeated from previous discussions of the physiology of vasopressin as it relates to the control of extracellular osmolality; the rest is material more relevant to people who deploy vasopressin in the treatment of shock. Chemical Structure of 8-Arginine Vasopressin 8-arginine vasopressin is a synthetic analogue of an endogenous nonapeptide hormone. It is indistinguishable from the endogenous hormone. It is a cyclical peptide: The two cysteines are joined by a disulfide bridge, and this curls the molecule into something of a pretzel. Since its discovery in 1895 , pituitary extract has been just that- extract of pituitary glands, fresh or dried. Whose glands, you ask? Those of oxen Continue reading >>

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  1. MathWiz

    I wasn’t sure which section I should post this in, my strategy is what I call the 4–2–1 plan, I fast 2 day non consecutive days a week, eat a low carb but not calorie restricted diet 4 days a week to keep the fat burning benefits of ketosis going and then I give myself 1 day a week to indulge and eat whatever I want, usually a Saturday pasta dinner and wonderful dessert. I also walk 4 to 6 miles a day during the week and 10 to 12 miles on Saturday.
    Low Carb plans such as Atkins can be very effective for some people including me, many people who start a low carb diet experience get what’s called the “ketosis flu” or the “induction flu” in the first few days while the body is adapting to burning ketones instead of glucose.
    The basic symptoms are:
    – Headaches
    – Nausea
    – Upset stomach
    – Lack of mental clarity (brain fog)
    – Sleepiness
    – Fatigue
    It’s called the “ketosis flu” for a reason: you feel sick. I’ve gone through it and it wasn’t a pleasant experience. Fortunately it only lasted 2 days but then suddenly I woke up feeling much better, less hungry and my energy level was really high and consistent throughout the day!
    The first time I thought to myself: “What the heck am I doing? I feel like I’m going to die!” but I persevered and when it was over I didn’t regret a thing because what I had gained mentally and physically was 100% worth it.
    For those of you that are going through the ketosis flu, don’t give up! I know you feel like it’s never going to get better but stick with it and you´ll be so happy you did! I’m telling you, waking up refreshed for the first time in years, not getting the afternoon “blah” feeling and stuffing my face with carbs to try to boost my energy is the best side effect of the low carb diet I’ve experienced. Okay, losing weight while eating good food, feeling full and satisfied is great too.
    First you have to understand why your body is reacting this way. Your body’s been burning glucose for energy so it’s basically full of enzymes that are waiting to deal with the carbs you eat, but now the body needs to make new enzymes that burn fat for fuel instead of carbs, and the transition period causes the flu-like symptoms.
    There are some things you can do to lessen the symptoms of the ketosis flu and to make it go away sooner (to force the body to transition sooner) Ok, let’s get to the good part – what to do:
    First of all – you’re probably dehydrated. Drink PLENTY of water while you’re on a low carb diet, and then drink some more.
    Watch your electrolytes. When the body is getting rid of excess insulin from your former carb-crazy diet you´ll lose lots of fluids that have been retained in your body. This causes the rapid weight loss most people see in their first few days of ketosis, it’s mostly water, sorry. When you lose all the retained water you also lose electrolytes like sodium, magnesium and potassium. When you’re lacking them you´ll feel like crap so when you’re feeling really ill on the ketosis flu try things like chicken/beef broth and look for foods rich in these minerals. Take a multi-vitamin and a multi-mineral.
    Ok, here is where people throw the red flag – Eat more fat – Yup, I said MORE fat. Have some butter, just not on a roll, eat some bacon and eggs for breakfast, just skip the potatoes and toast. This will force your body to hurry up the transition. You´ll think this is crazy and think you´ll never get lose weight eating this way, but you will.
    Don’t eat too much protein – The body can transform protein into glucose so if you eat too much of it in the first days it will slow down the transition. Go for fatty meat and cheese if you can, add fat to protein shakes etc.
    Drink water, replenish electrolytes (sodium, magnesium, potassium) with food and supplements, drink broth, eat fat and not too much protein.
    I hope this helps, and have a great day
    Charles

  2. rockyromero

    @mathwiz
    ” Take a multi-vitamin and a multi-mineral.”
    I have been forgetting to take a multi-vitamin on fast days. Thanks for the reminder.
    “Eat more fat – Yup, I said MORE fat. ”
    I will have avocado more often.

  3. AussieJess

    Thanks for that info, very interesting

  4. -> Continue reading
read more

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