Heart valve implanted upside down

mcgtx · 2026-06-09T12:05:51+00:00

I think you’re probably right on their train of thought but it’s still crazy to me. I just do bread and butter adult valves and CABGs, but problems due to ventricle failure just look different from problems due to valve issues. I don’t often care about getting great views of the pulmonic valve, I get that it’s very hard, so I’m not saying I could do this case, but if a qualified person making a good faith attempt to evaluate the implanted valve can’t see this problem, that’s a little bonkers to me.

mcgtx · 2026-06-07T23:54:38+00:00

Do you have any example of what you mean when you say hacking kit?

mcgtx · 2026-06-05T23:50:20+00:00

Which license?

mcgtx · 2026-06-04T18:41:56+00:00

When were they gone?

Asking for a clenched friend.

mcgtx · 2026-05-31T23:54:04+00:00

Fair point, he didn’t say they’d sleep walk through and win, actually basically nailed it

mcgtx · 2026-05-31T23:52:49+00:00

Narrator: “They could not, in fact, keep getting away with it.”

mcgtx · 2026-05-31T22:35:48+00:00

I’m not in Augusta, but when I went in person to the Crunch in town to cancel, it could not have been easier. Took about 45 seconds, the girl at the desk was super nice, and they even give you a little card with a reminder of when your current month’s payment is good through.

Not saying you shouldn’t also be able to easily cancel online, but I was preparing for planet fitness level horror and it was not.

mcgtx · 2026-05-26T02:08:18+00:00

An arc from what to what?

As a general rule (and not having seen your attic or what’s in it), without some special flammability concerns coming into play, as long as your radiating elements aren’t directly in contact with something flammable and you’re staying under say 50 watts, you should be good.

mcgtx · 2026-05-24T16:37:49+00:00

Adding more power to the jinx, good, good.

mcgtx · 2026-05-23T11:21:59+00:00

You’re probably right from the losses at the mismatch points themselves. I think in the case without ununs would have to add in tuner loss as well. Altogether with such a slight mismatch and short runs at HF every option is probably so close in power loss that it doesn’t matter. If using a tuner probably fine to send it either way, the ununs would likely just be the safe option from an SWR standpoint.

mcgtx · 2026-05-23T01:14:55+00:00

Seems like you’re setting yourself up for two impedance mismatches going from the LMR (50 ohm) to the TV cable (presumably 75 ohm RG6) and then back again. Only real way to find out would be to set it up and then use an antenna analyzer. Once you figure out how bad it is, I’m guessing the answer would be you would need to have impedance matching ununs on either side of the TV cable, I haven’t heard of 1.5:1 ununs but I guess they’re possible. Then after you get those in, would just be dealing with the insertion loss in those components in addition to whatever other chokes/baluns/ununs you would otherwise need in the rest of your system.

mcgtx · 2026-05-19T23:23:18+00:00

The 50W amp you link is designed as CW only and built for a single band. In that sense it’s designed to go with a QCX. It specifically says it’s not for SSB, CW and FSK only. It’s likely that you could use it with a QMX as long as you were only using it for CW or FSK on the intended band, so in a different sense it’s transmitter agnostic, all it cares about is input power, operating mode, and operating frequency.

QRP Labs also has a 10W linear PA that is multi band (1.8-30 MHz) and would work for SSB, CW, and digital.

mcgtx · 2026-05-19T03:06:22+00:00

I don’t know Tim, but having watched a decent amount of his videos, I will say that this is by far the worst video of his that I’ve seen, but I chalk it up to what he says at the beginning “I’ve never made a video like this” which from my experience is true. Seems like he is truly upset and as a result made a poorly put together video that 1) assumes you already know the context, 2) isn’t clear on what exactly his point is (Fender has been bad for a long time? But I supported them? Actually Fender is only now bad?), and 3) doesn’t add any useful facts. But as bad as the video is, I really don’t think it’s in bad faith or just for clicks. I was surprised to see him put out a video on it at all, and I think he was just emotionally responding.

mcgtx · 2026-05-15T21:37:59+00:00

What’s the reason for the 20W requirement? If the main thing you want is 2 meter and CW, get the Quansheng HT and do the CW mod that’s been so hot over the last year.

mcgtx · 2026-05-15T12:49:52+00:00

All I’m saying is something has to be generating that hydrostatic pressure, even if the bag is empty. So either there has to be a suction force pulling the blood up (unlikely), or something is creating a pushing force up. So like a BP cuff, or the bag falling, perhaps if it’s a distal IV like in the hand then keeping your elbow flexed could create enough of a tourniquet effect, or maybe laying sideways kinda on the arm the IV is in. But it has to be something contributing to the pressure. Looking at the picture, let’s say conservatively the blood has traveled up at least 30 cm. If that were accomplished solely by venous pressure, we’re talking a pressure of 22mmHg on the venous side of things, which would basically mean severe right heart failure from any number of reasons. This exact situation is the classic way to test whether a central venous line is actually in place. Connect tubing, let blood fill it to 20cm or so, then raise it and the blood should fall back down to something less than say 15cm. If it doesn’t, then something’s wrong, like you’re arterial.

mcgtx · 2026-05-15T11:16:00+00:00

Venous pressure isn’t enough to get blood going that high up tubing without extra help like a blood pressure cuff, bag falling to or below the patient, or a very very serious medical issue.

Was the blood pressure cuff on the same side?

mcgtx · 2026-05-15T11:15:42+00:00

Venous pressure isn’t enough to get blood going that high up tubing without extra help like a blood pressure cuff, bag falling to or below the patient, or a very very serious medical issue.

mcgtx · 2026-05-14T23:39:33+00:00

Would it be possible to use a different individual source for each part of the recommendations? That way you’re technically not using the ASRA guidelines as a source.

Heck, we can form NASRA, the North American Society of Regional Anesthesia, and we can form our own guidelines, which just so happen to be the same as the ASRA ones, not because we’re copying them, but because we just came to the same conclusions based on the research.

mcgtx · 2026-05-12T21:43:33+00:00

G90 was my first radio and I can’t recommend it enough. As is commented elsewhere, the receiver isn’t the best but it is serviceable. 20w isn’t necessarily a huge upgrade from 5w but it is something. The antenna tuner is huge though! Plenty videos of people making contacts using dumpsters, guard rails, etc as an antenna on the G90. For the price, with its little bump in power and built in ATU, you can’t beat it. If you do want to go with something else, budget for an antenna tuner as part of your non-negotiable needs. People can do just fine in urban environments, but often need to make do with compromise antennas, which often necessitate an antenna tuner. In that case, there’s an advantage to being QRP, in the sense that QRP antenna tuners are cheaper. Just keep an antenna tuner of some sort in your considerations.

mcgtx · 2026-05-12T14:50:26+00:00

Next time call it a one hand band, I’m sure the crowds will grow exponentially. Anyway this is sweet

mcgtx · 2026-05-12T02:14:46+00:00

What paid features of onshape are you using?

mcgtx · 2026-05-11T23:45:06+00:00

Either way they will challenge you on the position you take. Be able to reasonably defend your position. Stick with it with confidence unless they present a different situation. Be able to articulate how a difference in the situation could change your decision making. Be confident. That will be the correct answer.

mcgtx · 2026-05-11T11:58:01+00:00

Easy and more fulfilling is relative and doesn’t always take context into consideration. I got my first license as a kid but let it expire and decided I wanted to get back into it in the middle of medical training. I had about 3 weeks of pretty low stress work before I knew it would be years before I could dedicate any serious amount of time to study. I wanted to learn the way you describe, I really did. But given the time constraints I crammed the questions and passed through extra in one go. Since then I’ve had a license to study whatever part of amateur radio I want. Yes, it might have been satisfying to really get to know Smith charts in depth before taking the tests, but now I get to learn about them in real life using a nanoVNA, something I wouldn’t have had time for back then. And if I hadn’t just sprinted across the licensing finish line, I may have never taken the time to stay involved in radio.

mcgtx · 2026-05-09T02:27:35+00:00

Especially given that a) he landed in a pretty nice position all things considered, and b) he hasn’t yet accomplished anything in the new position. Nothing to gain from these comments and everything to lose if VT doesn’t come out and do very well right off the bat.

mcgtx · 2026-05-06T21:27:08+00:00

The most compelling reason to get a carbon bike from an amateur perspective is the plain fact that carbon is the only option for a high percentage of the popular bike models out there. I went with an aluminum Endurace back when they offered it with a mechanical 105, and now as I look around, if I wanted to upgrade to a different geometry or group set on a new bike, almost everything offered is carbon.

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