Tag Archives: allergy

Root Cause

Teen Dies From Peanut Reaction Despite Epinephrine Injections

By ThinkReliability Staff

Even with the best medical treatment known provided quickly after an anaphylactic reaction, a teen died after taking a bite of a snack containing peanuts, to which she was severely allergic. It is important to note that the snack was not clearly marked to contain peanuts and it was a style of treat (Rice Krispies) that would not ordinarily contain peanuts.

In a situation requiring emergency response, it is important to ensure that all the prescribed steps were taken.  The required steps can be diagrammed visually within a Process Map.  In this case, all available actions were taken to attempt to reverse the allergic reaction. (View the Process Map of the appropriate food allergy response by clicking “Download PDF” above.)

For reasons as yet unknown, food allergies have been increasing over recent years.  This has resulted in a greater risk for anaphylactic reactions, which can result in serious injury and even death, usually from throat closure from swelling (known as severe laryngeal edema).

According to John Lehr, the Chief Executive Officer of  Food Allergy Research & Education:  “Avoidance is the only way to avoid a reaction, but we know accidents happen.  That’s the insidious nature of food allergies.”

Because avoidance is the only way to avoid an anaphylactic reaction, many schools and other public facilities have stopped offering any food containing peanuts.  Others have designated peanut-free zones to help those with allergies avoid contact with peanuts.  (Although peanut allergies are not the most prevalent, they are the most dangerous, both from reaction severity and likelihood of contact.)  Certainly, snacks containing peanuts must be clearly marked as such.

Because of the high risk of serious injury or even death from food allergies,  please pass the word about food allergies.  If you are an allergy sufferer, ensure that you have multiple epinephrine auto-injectors that have not expired.  It may save your life.  (Although up to 40% of anaphylaxis victims require two or three epinephrine injections, death after receiving injections is extremely rare.)   Also note, from John Lehr:  “We tell people that their last reaction is not an indication of their next reaction.  Don’t think because you have not had a severe reaction that you can’t have one.”  If you provide food to the public or children, consider removing peanuts from your  kitchen and at the very least, clearly mark anything that does contain peanuts.   Remember, the risk from food allergies is very real, and can be very severe.

You can see the cause-and-effect relationships that led to this tragedy, as well as the Process Map discussing anaphylactic response, in visual form, by clicking “Download PDF” above.  Or click here to read more.

Root Cause Analysis

Protein in Donated Blood Causes Life-Threatening Allergy

By ThinkReliability Staff

Blood transfusions are fairly common, with 25 million blood component transfusions occurring per year.  Blood transfusions are also very safe. The risk of health concerns from blood component transfusions is extremely low.  Until recently, it was believed that all the concerns from transfused blood were being tested for and rooted out.  However, a new case presented in the New England Journal of Medicine has presented a new concern.

A six-year-old boy in the Netherlands was receiving pooled platelets when he suffered from an allergic reaction.  The staff was able to prevent potential death or serious injury with an immediate injection of adrenaline.  As a follow-up, the staff tested the boy and ruled out many other potential causes.  The lab tests and testimony from the boy’s mother confirmed an allergy to a peptide, which is a protein that is left in the blood after ingesting peanuts. The peptide, known as Ara h2, is resistant to digestion, as evidenced by studies that have found levels in the blood 24 hours after ingestion.

Because this case demonstrates a newly discovered phenomenon, evidence to support the causes is particularly important.  Evidence supporting the placement of a cause related to a root cause analysis can be placed in a box directly below the cause box on a Cause Map.  (To see the Cause Map, click on “Download PDF” above.)  The allergy to the peanut peptide causing the allergic reaction and the peptides being present were verified by testing and interviews with the donors and the patient’s family.

The immediate solution, to inject adrenaline to prevent the patient’s death from the allergic reaction, was taken immediately but does not do anything to solve the broader problem of potential allergens in the blood supply.  One of the potential solutions is to screen the blood supply for dietary contributions, but considering the large amount of donors and recipients, this is considered to be prohibitively expensive and difficult.  Because there is not a viable alternative blood transplant source, and blood transfusions are still needed by patients with allergies, it seems that the solution must be to figure out a way to remove the proteins, at least from blood transfusions going to people with allergies.  However, another case, from 2003 resulted in a blood product recipient developing allergies when receiving a blood transfusion from a donor who had peanut allergies, so screening the blood supply prior to transfusing people with allergies may not be sufficient.