Anatomy of a Electric Skateboard

Upon a first or quick glance, a skateboard looks pretty simple and innocuous. In layman’s terms, a skateboard deck is just a piece of wood with some wheels attached to its bottom. However, as with just about anything in life, upon closer inspection, you’ll quickly discover that there’s much more to a skateboard than meets the eye. Skateboards are, in fact, at the same time, complicated and delicate – which allows skateboarders the freedom to move about in any environment with precision, speed, toughness, and, when required, the ability to defy gravity and grind down rails. At the same time, expert riders and enthusiasts are also capable of performing incredible leaps, jumps and other mind-boggling tricks.

That’s pretty impressive for something which, at its core, is just a piece of wood with wheels affixed to its underside. So, what makes a skateboard a electric skateboard? What goes into its construction and development which allows professional and high-level skateboarders the ability to propel, jump, turn, twist and do all those other super-cool things? And while a skateboard would be pretty much useless without someone activating and using it, the design of the actual deck, from its trucks to its grip tape and everything in between, also has something to do with it too.

With that being said, there are certain elements and aspects which are nothing but absolutely critical to a skateboard. Without these components, a skateboard would literally be – as has been mentioned previously – just a piece of wood with wheels stuck to it. However, certain modifications and additions transform that ordinary wheeled piece of wood into a rolling, flying, grinding machine that has caught on in popularity like wildfire. So, when trying to distinguish a world-class skateboard from a simple piece of wood with wheels, try to keep an eye out for some of these vital pieces:

Deck

This is the piece of wood that’s more than a piece of wood. Skateboard decks usually are rectangular or oval in shape, and feature raised back-ends (sometimes called kick tails) and sloped front ends. And while yes, sometimes skateboard decks are made of wood, they can also be made from other materials such as plastic, fiberglass and even kevlar.

Grip Tape

Applied to the top surface of the skateboard deck like a sticker, grip tape is what keeps a skateboarder’s feet from slipping and sliding all over the place while they’re using the board. Grip tape has a tough, grinding feel to it, much like sandpaper does. While commonly seen in black, grip tape does indeed come in many different colors and styles.

Trucks

Skateboard trucks are attached directly to the underside of the skateboard deck. Somewhat shaped like a capital letter T, the wheels of the skateboard are connected to either end of the truck. There are two trucks per skateboard, and each truck holds two wheels, thus giving the skateboard four wheels in total. When thinking of a skateboard truck, try to picture the axles of an automobile.

Wheels

Without wheels, it would be very tricky, and very well near impossible, to actually move about on your skateboard deck. While skateboard wheels are commonly made from polyurethane, the actual size and diameter of the wheels can vary as well. There is no standard guidelines as to how big skateboard wheels can be, however, wheel sizes does depend on how you intend on using your skateboard.

Wheel Bearings

Without wheel bearings, the wheels which are attached to the board wouldn’t turn much, if at all. Bearings for a electric skateboards usually are manufactured in the standard 608 bearing size and are usually made from steel. However, that being said, other compounds, like silicon nitrade, can also be found in skateboard wheel bearings.

Fish oil supplementation during pregnancy may lower asthma risk

fish oil

Preventing allergy is a priority for both physicians and parents. There have been many studies attempting to lessen the risk of both food and environmental allergies.

Here are a few examples of possible interventions to decrease the risk of allergy;

  • Frequent application of emollients (moisturizers) from birth.
  • Breast feeding, hypoallergenic formulas, early introduction of foods.
  • Probiotics.
  • Avoiding pets OR adding more pets.

A study, started in 1990 and recently completed and accepted for publication, looked at fish oil supplementation in pregnancy*. Over 500 pregnant mothers were given supplements containing fish oil, olive oil or no oil. The hypothesis was that maternal supplementation with long chain n-3 polyunsaturated fatty acids (PUFAs) may have immunological effects on the developing fetus and decrease allergies and asthma. The children were evaluated when they reached 18 years of age.

RESULTS:

The probability of having had asthma medication prescribed was significantly reduced in the fish oil group compared to the olive oil group (HR=0.54, 95% CI: 0.32-0.90, p=0.02). The probability of having had allergic rhinitis medication prescribed was also reduced in the fish oil group compared to the olive oil group (HR=0.70, 95% CI: 0.47-1.05, p=0.09), but the difference was not statistically significant. Self-reported information collected at age 18-19 years supported these findings.

CONCLUSION:

Maternal supplementation with fish oil may have prophylactic potential for long-term prevention of offspring asthma.

REFERENCE:

Hansen S, Strøm M, Maslova E, Dahl R, Hoffmann HJ, Rytter D, Bech BH, Henriksen TB, Granström C, Halldorsson TI, Chavarro JE, Linneberg A, Olsen SF, Fish oil supplementation during pregnancy and allergic respiratory disease in the adult offspring, Journal of Allergy and Clinical Immunology (2016), doi: 10.1016/j.jaci.2016.02.042.

Sanofi US Issues Voluntary Nationwide Recall of ALL Auvi‑Q® Due to Potential Inaccurate Dosage Delivery

Sanofi US Issues Voluntary Nationwide Recall of ALL Auvi‑Q®
Due to Potential Inaccurate Dosage Delivery

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Due to high volume of calls being received on the Auvi‑Q customer service phone line, callers may periodically receive a message that the line is down. We appreciate your patience and please call back.

Sanofi US is voluntarily recalling ALL Auvi‑Q® (epinephrine injection, USP). The recall involves ALL Auvi‑Q currently on the market and includes both the 0.15 mg and 0.3 mg strengths. The Lot numbers include every consecutive lot number beginning with 2081278 through 3037230. The products have been found to potentially have inaccurate dosage delivery.

If a patient experiencing a serious allergic reaction (i.e., anaphylaxis) did not receive the intended dose, there could be significant health consequences, including death because anaphylaxis is a potentially life‑threatening condition. As of October 26, 2015, Sanofi has received 26 reports of suspected device malfunctions in the US and Canada. None of these device malfunction reports have been confirmed. In these reports, patients have described symptoms of the underlying hypersensitivity reaction. No fatal outcomes have been reported among these cases.

Auvi‑Q (epinephrine injection, USP) is used to treat life‑threatening allergic reactions (anaphylaxis) in people who are at risk for or have a history of these reactions. Auvi‑Q is packaged with two active devices and one trainer device in a corrugate box. Auvi‑Q was distributed throughout the United States via wholesalers, pharmacies and hospitals. All Auvi‑Q is being recalled.

Sanofi US is notifying its distributors and customers who include doctors, pharmacies, wholesalers and other customers in the supply chain by letter, fax, email and phone calls and is arranging for return and reimbursement of all recalled products.

Customers with questions regarding this recall can go to www.Auvi‑Q.com and call 1‑877‑319‑8963 or 1‑866‑726‑6340 Monday through Friday 8 a.m. to 8 p.m. ET for information about how to return their Auvi‑Q devices. Sanofi US will provide reimbursement for out of pocket costs incurred for the purchase of new epinephrine auto‑injectors with proof of purchase.

Customers should immediately contact their healthcare provider (HCP) for a prescription for an alternate epinephrine auto‑injector. In the event of a life‑threatening allergic reaction (anaphylaxis), patients should only use their Auvi‑Q device if another epinephrine auto‑injector is not available, and then call 911 or local medical emergency services. Customers should contact their physician or HCP if they have experienced any problems that may be related to taking or using this drug product.

Any adverse events or quality problems experienced with the use of this product should be reported either to Sanofi or to the FDA’s MedWatch Program.

To report an adverse event to Sanofi US: call 1‑800‑666‑1630, Option 2.
To report an adverse event to the FDA Med Watch Program: by fax 1‑800‑FDA‑0178, by mail at MedWatch, FDA, 5600 Fishers Lane, Rockville, MD 20852‑9787 or on the MedWatch website at www.fda.gov/medwatch/report.htm
This recall is being conducted with the knowledge of the U.S. Food and Drug Administration.

Sanofi US is committed to patient safety and the quality of Auvi‑Q, and will continue to work closely with customers and regulatory authorities to resolve this issue in a timely manner.

Allergic reactions without answers

Chronic hives are a common problem in the general population and in my practice. Children and adults can suffer daily itching and hives for months or years without explanation. However, symptoms often resolve spontaneously and most importantly, the risk of a severe reaction is very low.

On the other hand, there is a separate condition called idiopathic anaphylaxis. People with this condition will have more severe allergic reactions; symptoms may include hives and swelling but there may also be upper airway obstruction, wheezing, shortness of breath, decreased blood pressure or fainting.

If a patient presents to the office after having a severe reaction, my primary goal is to identify what caused the reaction. Subsequent avoidance can prevent future problems. The most common (known) causes include foods, medications and stings. Unfortunately, a thorough history and physical exam may night identify a cause (or even a suspect). This situation occurs in 30-60% of adults and up to 10% of children. Risk factors include female gender and reported penicillin allergy.

Here are some possible explanations for idiopathic anaphylaxis:

  • Hidden food allergens. Expanding testing to include a large food panel may help to identify the cause. Unfortunately studies have shown little success, finding a cause in only 7% of cases. Other studies have ruled out food preservatives as causes of idiopathic anaphylaxis, including sulfites, MSG and aspartame.
  • Female hormones.
  • Immune abnormalities.
  • Increased sensitivity to histamine.
  • Autoimmune disease.
  • Delayed allergy to beef, pork or lamb. An allergic reaction to the oligosaccharide alpha-gal. Transmitted by the Lone Star tick.
  • Conditions which mimic anaphylaxis: somatoform disorder, scromboidosis (poisoning form “spoiled” fish).

Here are some tests that may be done:

  • Skin (or blood) testing to foods and/or medications.
  • Serum anti-alpha-gal IgE.
  • Tryptase level. Prostaglandin D2.
  • Urinary histamine metabolites.
  • Genetic analysis.

Here are possible treatments:

  • Anti-histamines.
  • Oral Steroids.
  • Oral albuterol.

 

Xolair approved for chronic hives

The FDA has approved omalizumab (Xolair) for the treatment of chronic hives. This is the first medication with a specific indication for [glossary slug=’chronic-idiopathic-urticaria’ /] (CIU). There are many patients with CIU that remain symptomatic, covered in hives and itchy despite multiple medications. The addition of Xolair may help these patients get their symptoms under control.

The good:

– Current treatment options are limited and often ineffective.

– Convenience. Xolair is given as an injection on a monthly basis. Current medication regimens may include up to 20 pills per day.

The bad:

– Xolair is expensive and will require pre-approval.

– Several clinical studies have demonstrated a high degree of safety. However, there are concerns that Xolair use may increase the risk of cardiac events and severe allergic reactions.

The ugly:

– Xolair, like other available medications, suppresses the hives but does not fix the underlying problem. Optimally, a cause can be identified and corrected or avoided.