17 votes
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Can I hear ultrasounds?

It is likely you are not hearing the ultrasound itself (typical frequencies are upwards of 1 MHz, far beyond what the human hearing system is capable of detecting). You are probably hearing coil ...
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  • 1,970
8 votes
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Difference between TENS and EMS electro stimulation?

As you read, both TENS and EMS employ electrotherapy to treat acute and chronic pain, but the methodology differs. (Note that some of the references are to NMES, which stands for Neuromuscular ...
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8 votes
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If sphygmomanometer literally cuts off the blood flow, is it gonna kill the patient if pressure is not released?

Heart attacks are caused by reduced or blocked blood flow to the heart, but a sphygmonanometer cuts off the blood flow to the arm (or leg) only. It's not possible it could cause a heart attack ...
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  • 9,346
7 votes
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Can Manual External Defibrillators "restart" a heart?

Your technical understanding is correct and television is fiction. In fact, watching shows involving CPR and defibrillation is a source of both amusement and frustration for most medical professionals ...
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  • 9,346
7 votes
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What is proper capacity of adult non-rebreather masks?

Ah, but they can and do. A non-rebreather (NRB) mask with 100% O2 flowing at 12-15 L/min will provide about 90% O2 concentration to an adult. This is true even for the largest adult in severe ...
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  • 9,346
6 votes
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Is ShockWave Therapy Useful For ED or not?

The results of our studies, which also included a double-blind randomized control trial, confirm that LI-ESWT generates a significant clinical improvement of erectile function and a significant ...
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  • 828
6 votes
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What does "sinus rhythm otherwise normal ECG" mean?

Basically you have a normal ECG reading according to the machine. Sinus rhythm (as explained in the first section of this book chapter) is normal, meaning that the heart is depolarized by a wave ...
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  • 6,540
6 votes

Why is defibrillation commenced before CPR in ventricular fibrillation?

The timing of the first defibrillation attempts depends mostly on when defibrillation is detected. If it is witnessed - that is, the patient is being monitored and the alarm goes off, you're right ...
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5 votes
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Mechanical cardio resuscitation for asystole

"Giving" electrical current to the heart does not necessarily translate to mechanical contractions. The excitation-contraction coupling (as the sequence of electrical activation an muscle contraction ...
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5 votes
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How can doctors remove a stye without damaging the eyeball?

What is a stye? A stye is an infection of the sebaceous glands at the base of the eyelashes or the apocrine sweat glands on the margin of the eyelid. Styes are caused by the gland becoming blocked by ...
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5 votes

What does "sinus rhythm otherwise normal ECG" mean?

Basically I agree with JohnP. The "otherwise normal ecg" is an unfortunate phrase. Sinus rhythm is the normal rhythm of the heart. So the machine should interpret as: Normal ECG. Rhythm:Sinus Heart ...
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5 votes
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Why Aren't There Any OpenSource/OpenHardware Ventilators?

In the United States, any ventilator must fulfill: Safety and Efficacy requirements as set forth in Medical Device Standards. Sales of medical devices are regulated by the FDA: a lengthy (data ...
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  • 817
4 votes

What is the name of medical instruments for laparoscopy?

The most important instrument is laparoscope/endoscope which is a fiberoptic instrument inserted through an incision in the abdominal wall and used to examine visually the interior of the ...
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4 votes

Medical imaging - image quality?

Here are some resources and books you can use but before that check out FDA ,radiologyeducation.com, virginia.edu , emory.edu and sprawls.org i think they can pretty much give you the information you ...
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  • 415
2 votes

Operating principles of a ventilator in CPAP mode

Sensitivity refers to the level at which the ventilator will trigger a breath. CPAP provides, as the name implies, continuous pressure. This is known as PEEP. PEEP is the background pressure that the ...
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  • 1,261
2 votes

What CGM systems don't require fingerstick calibration?

I think its time to update this question: now there are available a couple of options that do not require the calibrations of the CGM through the fingerstick. The Dexcom G6, which it could be seen ...
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2 votes

Why don't we use complete white medical suits to have full protection instead of only masks?

In an ideal world everyone would have full body Ebola type protection. In the world of practicality, the WHO has advised that this is a droplet, and surface spread infection. However, it is not ...
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  • 13.2k
2 votes

How is the workflow of physical examination's documentation in the USA exactly?

I agree with the other answer and wanted to add a few things. At most larger healthcare systems in the USA, EHRs are used. Paper is still sometimes used in smaller practices, but rarely. In the USA ...
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  • 5,694
2 votes
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Are cell phones still prohibited from the ER or other medical facilities? Why or why not?

Cairo University's Journal of Advanced Research (PDF) looks at all of the studies on ElectroMagnetic Interferene (EMI) from mobile cellular phones and medical equipment. It says that based on the ...
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  • 5,872
2 votes

Dataset for Tele-medicine Vital Signs

In a typical ambulance operating at the paramedic level in the US, the following vital signs might be recorded: Heart rate Respiratory rate BP SpO2 GCS EtCO2 Pupil size The last two would be ...
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  • 9,346
2 votes

Technology prospects for genome sequencing at home and data protection

I am working in the information security industry and personally following medical technology closely. Your first question kind of asks to predict the future, which nobody can. Yet, I will give you my ...
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  • 989
2 votes

Is ShockWave Therapy Useful For ED or not?

The research on this topic is a little mixed, but a new study[1] published in January 2019 reviewed almost 40 previous studies, and concluded the shockwave therapy significantly improves erectile ...
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1 vote

Technology prospects for genome sequencing at home and data protection

The first question relates to the retail price floor of genome sequencing hardware. As with any commercial product, price depends on demand. I don't envision much demand for home genome sequencing, ...
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1 vote

What software are there to use on laptop for blood analysis and diagnosis?

No there isn’t. Your computer is lacking the hardware diagnostic tools, so a software won’t be able to help. An actual blood test is a compilation of multiple tests done by experts in a lab, and even ...
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  • 6,574
1 vote

What CGM systems don't require fingerstick calibration?

I am aware of only three available CGMs in the US today: The Dexcom G4, the Dexcom G5, and the Medtronic Enlite. There used to be one more, the Abbott Navigator, but it was withdrawn from the US ...
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1 vote

Are there any insulin pumps which are attached for more than a few days?

It would be great to be able to keep an infusion set for that long. The reason why infusion sets cannot stay as long as CGM sensors is that the cannula used for injecting insulin in an infusion set ...
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1 vote

Are there any insulin pumps which are attached for more than a few days?

Unfortunately no, I have not found in my research any pumps which can be attached for a longer amount of time, although I did find a study which you may find relates to your question. Link to Study ...
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1 vote

Are there any non-injection methods of delivering long-acting insulin?

There are no inhaled insulin products that are long-acting, basal products. Today, Afrezza is the only type of inhaled insulin that is available, and it is of course bolus insulin. The only other ...
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1 vote

Interpreting DXA results myself

I definitely agree with you, to not bother with bioelectrical impedance devices as they really are not worth that much. The dexa scan readouts I have seen in America are pretty straight forward. They ...
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  • 129
1 vote

Why does hemodialysis need to done for so many hours?

During dialysis only about 10 percent of the blood is outside your body at any given time, while the rest continues to circulate. If the blood flows at 600mL/min, then it doesn't take very long to ...
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