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#3946 | |
The Maintenance Guy
Join Date: Sep 2005
Location: Renovated Bugeater Estate
Casino cash: $3992680
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Posts: 70,546
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#3947 | |
In Search of a Life
Join Date: Feb 2004
Casino cash: $-1807095
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Check out SPchief's fundraising page for Special Olympics Missouri - https://support.somo.org/fundraiser/5957339 ^^^^^^^^^^ Click here to help with a special cause. Please help me out ![]() |
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Posts: 36,201
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#3948 |
MVP
Join Date: Sep 2003
Location: Back in K.C. baby!!!!
Casino cash: $4453433
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Posts: 7,053
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#3949 | |
In Search of a Life
Join Date: Jan 2010
Location: L.A.
Casino cash: $-685716
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I heard a DJ in KC (Chuck Nasty I think) describe the same thing and say his Dr. told him he had the croup. So I assumed that's what it was. I don't really remember a fever at the onset but maybe there was one. Maybe what we all got was the milder strain, and then it mutated in China and they and Italy got the brutal strain. Maybe we have some herd immunity or something. Also a population of smokers could be the big problem. Some official in China is convinced some US athletes brought it over there in November. But obviously that doesn't mean much. |
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Posts: 28,358
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#3950 |
Inmem 2.0
Join Date: Aug 2007
Location: My house
Casino cash: $-1062442
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Dave really is on some bullshit
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Posts: 78,102
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#3951 | |
Now you've pissed me off!
Join Date: Jan 2006
Casino cash: $7209572
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It is likely that severe cases of COVID-19 initiate a harmful inflammatory response, which is why agents like chloroquine and tocilizumab are being investigated for efficacy. However, that does not mean that all immunosuppressants are created equal. In almost all cases you want robust immune function.
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"When the Know-Nothings get control, it will read 'all men are created equal, except negroes, and foreigners, and Catholics.' When it comes to this I should prefer emigrating to some country where they make no pretense of loving liberty – to Russia, for instance, where despotism can be taken pure, and without the base alloy of hypocrisy.”--Abraham Lincoln |
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Posts: 75,078
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#3952 | |
Inmem 2.0
Join Date: Aug 2007
Location: My house
Casino cash: $-1062442
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Posts: 78,102
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#3953 | |
Starter
Join Date: Oct 2018
Casino cash: $10000400
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Bergamo has a population of 120.000. What if it spreads to Milan with a population of 2+ Millions, and not far from Bergamo. Guess they took the right decision locking up the whole country. |
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#3954 | |
Now you've pissed me off!
Join Date: Jan 2006
Casino cash: $7209572
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1) The evidence is only as good as the trial design. In a situation like this, you aren't going to have good trial design, because people deteriorate quickly, there are no known beneficial treatments, and the need is so great that you aren't going to be able to blind patients and/or investigators as there is no standard of care to compare against. Ideally, you would want a large, multicenter trial with thousands of patients from a variety of demographics. They would need a random distribution between the intervention and the control group that is also consistent within subgroups. The trial should also be forward-looking (prospective) rather than collecting data from old cases and compiling it together (retrospective). The more patients you have, the greater your predictive power of the trial can be. Blinding helps prevent the placebo effect and reporter bias, but that really can't be done at this stage either. 2) In order to pass muster, most operators have agreed that a p-value of greater than two standard deviations is necessary to reduce the chances of it being a statistical anomaly. What that means is that there has to be less than a five percent chance the effects are random for it to be statistically significant. However, this is also complicated--what is the difference between clinical and statistical significance? Let's say I have a blood pressure drug I'm bringing to market and it lowers BP by an average of 2mmHg compared to a popular ACE-inhibitor, like lisinopril. Is that statistically significant? Yes. Is it clinically significant? Not likely. So the other thing I have to do is consider how much of a clinical impact this drug may have. That's why Tamiflu is overused in my opinion. Unless you are very young or old/immunocompromised, Tamiflu only shortens the duration of flu symptoms by about 8 hours, and that's only if you begin treatment within the first 40 hours of symptom onset. 3) Trials normally progress through three distinct phases (ignoring the preclinical trials with animal and computer models). The first is a dose escalation study--what can the body handle. Usually this is done in healthy volunteers depending upon the drug, but in more emergent cases, it is applied to individuals with the illness. The second phase is generally a placebo comparison--is this better than nothing at all? The third phase is comparison against an active comparator. Is this better than the current standard of care? As you can see, a trial for a COVID-19 agent isn't going to be able to meet these standards very well, either. So, let's apply this to COVID-19: What am I looking for first: a mortality benefit. What am I looking for next: morbidity benefits: decreased hospitalization length, reduced clinical sequelae, etc. So, what are these studies like: the favipravir study you mention is just a dose escalation study of about 60 people. You can get enough data with a sample size that small to meet statistical significance, but the confidence intervals will be broad and uncertainty high due to the small sample size. Also, what are the impacts of polypharmacy? Generally, multiple agents are needed in the case of antivirals, whether it's Hep C or HIV. However, one must be careful in choosing those agents due to drug interactions. Protease inhibitors are a great example. Their use revolutionized treatment for HIV, but protease inhibitors are among the strongest inhibitors of an enzyme in your body called cytochrome p450 3A4, which metabolizes more drugs than any other drug type. Well, what does this mean? Let's say that I'm taking carbamazepine for seizures and I start a protease inhibitor. What happens? The inhibition of 3A4 causes carbamazepine levels in my system to build up to toxic levels because I'm not clearing the drug quickly enough. So, what happens if one agent is a substrate and the other is an enzyme inducer? The second drug wipes out the efficacy of the first drug. In other cases, the inhibition (carbamazepine example) can actually be a benefit. Ritonavir is a potent 3A4 inhibitor, and is used to actually boost the level of other protease inhibitors (as they are also 3A4 substrates). Thus, when weighing such therapy, I must consider those effects as well. Also, I have to think about the side effects of each drug. For years, patients coming into the hospital who may have had an infection were given broad spectrum antibiotic coverage often with vancomycin and piperacillin-tazobactam (Zosyn). This would cover gram-positive bugs, gram-negative bugs and anaerobes. However, both agents are harmful to the kidneys, and the rate of acute kidney injury from their concurrent use is high, especially in an elderly population. This is also why you should avoid the use of fluoroquinolone antibiotics in the elderly. They increase the QT interval in the heart (old people are already prone to arrhythmias) and increase the risk of tendon rupture. So, who am I giving my new therapy to? What are its side effects? How do those side effects affect that person? What are their comorbidities? However, there's a reason why HAART works. In the case of HIV, which is prone to rapid mutation, suppression of one target (reverse transcriptase was the first and only target for almost a decade) leads to rapid development of resistance. Suppression of multiple targets (reverse transcriptase *2 plus viral protease) lead to a revolution in therapy, although not an elimination of resistance. We are still learning about SarsCoV2. Sites of attachment, entry, etc. More time will provide greater clarity on the viral life cycle, which will better elucidate treatments. Time, unfortunately, is not on our side in this case. Key takeaways: There is no magic number of patients, but more (hundreds to thousands) is always better and far, far more predictive than dozens. Polypharmacy may work if the mechanisms of action are synergistic or additive, but the risk of drug interactions and drug-disease interactions also increases.
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"When the Know-Nothings get control, it will read 'all men are created equal, except negroes, and foreigners, and Catholics.' When it comes to this I should prefer emigrating to some country where they make no pretense of loving liberty – to Russia, for instance, where despotism can be taken pure, and without the base alloy of hypocrisy.”--Abraham Lincoln |
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Posts: 75,078
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#3955 |
Cheat Death
Join Date: Nov 2007
Location: Land of Drincoln
Casino cash: $-1501756
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IL with 20 new cases overnight. Largest single day increase in the state since day 1. One case is a 60 yr old women in a DuPage Co nursing home.
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Posts: 36,914
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#3956 |
Kind of a mod
Join Date: Aug 2005
Location: Donkey Land
Casino cash: $-1763101
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I'm guessing people are downvoting it because it's "political," which I get.
As we've acknowledged, there's a ton of grey area here. My personal opinion is that factual news about Trump and the administration's response is welcome in this thread. It would be very difficult to avoid it entirely. Posts that second-guess said response or try to get into the blame game are not. |
Posts: 53,146
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#3957 |
Please squeeze
Join Date: Jul 2003
Location: Clinton, MO
Casino cash: $214644
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just do it
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Posts: 67,107
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#3958 |
In Search of a Life
Join Date: Aug 2012
Location: Correcting papers
Casino cash: $-690000
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good morning all. Hoping for a healthy day.
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Posts: 40,913
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#3959 | |
Kind of a mod
Join Date: Aug 2005
Location: Donkey Land
Casino cash: $-1763101
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Nothing about this is changing so fast that not knowing the latest for 12 hours is gonna make any difference. |
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Posts: 53,146
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#3960 | |
Admitted Planet Junky
Join Date: Oct 2000
Casino cash: $-1468373
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Sent from my SM-G973U1 using Tapatalk
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Fanaticism is nowhere. There is no tenderness or humanity in fanaticism. |
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Posts: 19,558
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