De Novo
  • Member for 3 years, 6 months
  • Last seen more than a month ago
Can a calorie be neither protein, carbohydrate, nor fat?
Accepted answer
11 votes

Ethanol is caloric and is neither a carbohydrate, protein, or fat.

View answer
Can a medical doctor write a prescription which has not gone through a formal diagnosis to identify as needed?
Accepted answer
2 votes

Writing a script for someone so you can "get physical" with them is, of course, an ethical problem. As far as prescribing off the cuff for family and close friends, that depends. It may be quite ...

View answer
Why is Tobramycin prescribed for ear infections?
Accepted answer
4 votes

Summary Tobramycin is an aminoglycoside antibiotic. All aminoglycoside antibiotics carry a risk of irreversible ototoxicity. The risk is reduced when applied topically, but not eliminated. Even ...

View answer
What are some conditions that would cause severe exercise intolerance?
3 votes

If you're looking for a disease with childhood onset that requires exercise restriction, Long QT Syndrome (LQTS) may work, specifically LQT1. Here is a lay overview. For more detail, see this review. ...

View answer
What causes a notch in the atrial pressure?
Accepted answer
2 votes

The left atrial pressure tracing here is not the best part of this figure. It might have some pedagogical value if it were discussed in the text, but it's not. Measuring left atrial pressure ...

View answer
Why you can't take viagra more than once a day?
4 votes

Why is the recommendation to not take more than 100mg/daily? Because that is what the clinical data show. If you take more than 100mg/daily you are at a higher than acceptable risk of undesirable ...

View answer
Could an old person get arthritis in only one knuckle?
4 votes

Monoarticular arthritis, or inflammation of a single joint, is a not uncommon complaint. Common causes in an older patient include gout, pseudogout, trauma, and infection. Gonococcal arthritis is a ...

View answer
Does staying at home expedites recovery from infections?
4 votes

Quarantine (self or imposed) does help prevent the spread of infectious diseases. This is sufficient to recommend convalescence at home, but there is no good evidence for a shorter recovery period for ...

View answer
Does an organ of a male donor work on a female patient?
6 votes

@NilsPawlik has addressed the issue of a donor/recipient gender mismatch (it's not the most important factor, but it is something to consider). I thought I'd clarify the point about donor/recipient ...

View answer
Are long term sedatives used to treat suicidality?
Accepted answer
5 votes

Effective treatment of suicidality involves treatment of any underlying disorder and multi-modal treatment to address the suicidality directly. For pharmacotherapy, there are few drugs that show clear ...

View answer
Father gets chickenpox, but doesn't infect his two children. How is this possible?
Accepted answer
14 votes

To add to @BryanKrause's answer re: rare events happen all the time, the children are not out of the woods yet. The mean incubation time for a primary VZV infection (the clinical syndrome known as ...

View answer
Any scientific evidence of "Breastfeeding Elimination Diet "?
4 votes

Because food antigens both cross the placenta and are excreted in breast milk, there was biological plausibility to the hypothesis that maternal avoidance of certain foods during both pregnancy and ...

View answer
How to avoid the diuretic effect of caffeine or green tea?
2 votes

Caffeine intake is associated with increased urination, but controlled studies (e.g., here and here) demonstrate fairly rapid adaptation and no chronic diuretic effect. For most people, if you want ...

View answer
Surgery of the hemorrhoid or other veins
Accepted answer
6 votes

What happens when a blood vessel is cut during surgery? Blood vessels (not just veins, but arteries also) are transected (cut), ligated (tied off), and/or cauterized (burned closed) in just about ...

View answer
Is the abbreviation"r/o" on a test report used in the declarative or imperative sense?
Accepted answer
7 votes

A full radiology report typically contains several sections, similar to a progress note. The "HISTORY" section discusses the medical history and possibly indications for the imaging. Here, r/o means ...

View answer
Is there a common standard to assess the safety of medical procedures?
Accepted answer
5 votes

No. There is not a set standard for the safety of medical procedures. The risks of procedures varies and is balanced against the potential benefits of the procedure (which will also vary). Unlike ...

View answer
Definition of Prevalence
Accepted answer
7 votes

There are two broad types of prevalence statistics: point prevalence and period prevalence. In both cases, more details need to be specified in order to fully describe the statistic. Point prevalence ...

View answer
“There is a very strong correlation between consuming dairy products — such as milk — and acne, skin breakouts and aging.”
5 votes

These are biologically plausible effects supported by moderate quality observational evidence. As a personal aside, I do not believe there is enough evidence for harm to recommend eliminating dairy ...

View answer
Do uteruses return to their original size after a full-term birth or are they slightly bigger than one that's never grown?
Accepted answer
6 votes

Does the uterus return to its original (pre-pregnancy) size after a full term birth? Good question. No. Uterine involution, the return of the uterus to the nonpregnant state postpartum, does involve ...

View answer
What is the fetal viability of a full-term birth baby?
5 votes

The concept of fetal viability is really only relevant when discussing premature infants. You are correct that the wikipedia figures are difficult to interpret. They come from this website, which is ...

View answer
How is "histologically invasive diameter" assessed in live patients?
Accepted answer
4 votes

These patients were staged on surgery. Typically whole tumor is excised with clear margins confirmed intraoperatively. Note the measurement is diameter of the primary tumor. Nodes and mets are ...

View answer
What is the difference between Eisenmenger syndrome and ventricular septal defect?
7 votes

Eisenmenger syndrome is a clinical syndrome. A ventricular septal defect (VSD) is an anatomic lesion. They are related in that Eisenmenger syndrome can be caused by a VSD (among other things). VSD A ...

View answer
The Ethics of extra treatment
Accepted answer
7 votes

You're describing an unexpected intra-operative finding. The possibility of unexpected findings (and their treatment) is usually discussed during the consent for the original procedure. Of course, in ...

View answer
Why is some alcohol consumption healthier than no alcohol consumption?
5 votes

While there is some evidence for what we call a J-shaped curve in the relationship between alcohol consumption and certain health outcomes, at best this evidence only suggests people who already drink ...

View answer
Do fridges really keep things fresh?
Accepted answer
6 votes

Your milk and chicken both have bacteria in them. If you leave them at room temperature, those bacteria will grow rapidly. Some may produce toxins that will not be inactivated by cooking. The greater ...

View answer
Put kid upside down while doing Heimlich on her/him
8 votes

First, don't hold your 4 year old child upside down when performing abdominal thrusts for choking. This is what you (and any bystander) should do for a choking child (Note that intervention for a ...

View answer
Outcomes after uterine rupture
7 votes

What are the outcomes of uterine rupture? Treatment of uterine rupture is surgical. Goals are stopping the hemorrhage, delivering the baby, and repairing the uterus if possible. The range of risks ...

View answer
Is there scientific evidence that spacing out vaccines have any positive effects?
6 votes

There is evidence that delaying or refusing immunization puts children at risk of disease here and here. There is also evidence that delaying or spreading out MMR or MMRV in particular puts children ...

View answer
What is Clinical Decision Support (CDS)?
Accepted answer
3 votes

What is Clinical Decision Support? This ends up getting a little bogged down in compliance mumbo jumbo, but Clinical Decision Support is defined by the US centers for medicare and medicaid services as:...

View answer
how do diabetics keep their kidney healthy?
5 votes

Diabetes does cause kidney problems, and is the leading cause of end stage renal disease in industrialized world (see Cecil Medicine, Chapter 126, Diabetes and The Kidney). Though neither fully ...

View answer