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Monday, May 5, 2014

What is Shoulder Injury Related to Vaccine Administration (SIRVA)?

SIRVA is a newly identified vaccine injury that is surfacing in vaccinated patients around the country. The damage from SIRVA centers on the shoulder or upper arm where the vaccine was administered. SIRVA is caused by the injection or administration of the vaccine itself, not from the contents of the vaccine being administered. SIRVA is an injury that occurs to the musculoskeletal structures of the shoulder such as the tendons, ligaments or bursa, due to a vaccine’s improper administration.

Symptoms of SIRVA have been reported as; arm pain, shoulder pain, shoulder dysfunction, frozen shoulder, adhesive capsulitis, shoulder bursitis, brachial neuritis or limited range of motion. Most individuals complaining of SIRVA report having experienced no shoulder pain prior to the vaccination they received. Of those patients impacted by SIRVA, most experience pain within 24 hours of a vaccine injection, with a substantial number reporting immediate pain following the injection.

Some individuals impacted by SIRVA report a belief that the vaccination they received was given too high up on the arm, damaging the deltoid muscle and resulting in symptoms such as shoulder pain, tenderness, tingling, numbness or weakness and decreased range of motion. Symptoms of SIRVA include prolonged shoulder pain, limited range of use, fluid collections in the deep deltoid or the rotator cuff tendons, shoulder tendonitis, shoulder bursitis, fluid buildup within the bursa, or rotator cuff tears. Cases of SIRVA have also been associated with Adhesive Capsulitis following an injection. Symptoms of SIRVA can last anywhere from months to years.

Known factors contributing to SIRVA range from improper vaccination technique, inappropriate needle length and improper angle and/or position of the hypodermic needle used to administer the vaccine. Over penetration of the deltoid muscle is also a known factor which can occur when the patient receiving the vaccination is underweight or has low body mass. Previous rotator cuff damage may also be aggravated due to inflammation of surrounding tissue.

Preliminary research on SIRVA indicates that in order to reduce cases of SIRVA, individuals administering vaccines should receive an updated vaccine administration protocol, prescribing that both the vaccinator and the person receiving the vaccine be seated. Doing so ensures that both individuals will be parallel during the vaccination process and that the jab of the needle will enter the patient in the proper place, in the upper deltoid muscle or near the shoulder.

Another recommendation is that since fainting can be common during vaccination, the person being vaccinated should be seated. Needle length should be determined by body mass index (BMI) to avoid over penetration due to use of needles that are too long.

Below is the text of a recent article published by the Journal of the American Board of Family Medicine, discussing research surrounding this vaccine injury.

Title: A “Needling” Problem: Shoulder Injury Related to Vaccine Administration
By: Matthew G. Barnes, MD, Christopher Ledford, MD and Karen Hogan, BA

Description

Signs of adhesive capsulitis and a rotator cuff tear with cortical irregularity 6 months after a routine seasonal flu injection were the symptoms of shoulder injury related to vaccine administration.

Case History

A 22-year-old woman with a weight of 120 lbs (54 kg) and no significant prior medical history presented with acute left shoulder pain, which limited her range of motion and functional ability. The patient was in her usual state of health until she received the influenza vaccine approximately 2 months before initial presentation. The 2011 seasonal flu vaccine was given by a trained medical technician, who reported placing the vaccine “3 fingers from the acromion” (measured at 2.75 inches or approximately 7 cm) in the middle of the deltoid, “hubbing” (inserting the needle to the depth of the plastic hub but not depressing surrounding skin) a 1-inch, 23-gauge needle, and injecting the vaccine. The patient reported having the onset of shoulder pain at the administration site within 2 hours of vaccination. Over the next 6 weeks, she had progressive limitations of her range of motion of her left shoulder and increasing pain, 9 out of 10 pain on a pain scale. On examination, the patient had very limited range of motion and experienced pain with both active and passive range of motion. Plain radiographs were unremarkable. Ultrasound imaging, at 9.5 weeks after the initial injection, demonstrated a partial tear of the supraspinatus tendon as well as cortical irregularity on the superolateral humeral head at the point of injection (Figure 1). MRI, at 8 weeks after the initial injection, showed joint effusion in the subacromial bursa, a longitudinal partial tear of the supraspinatus tendon, and a consistent bony contusion (Figure 2). Due to her limited range of motion, the patient had an immediate referral to sports medicine and was referred for aggressive physical therapy. A report of this patient’s history was sent to the Vaccine Adverse Event Reporting System.

At 11 weeks after initial presentation, the patient was re-evaluated and found to have significant improvement in pain (1 out of 10) at rest, reporting discomfort with use of the left shoulder but no limitations in function. Ultrasound images at that time demonstrated residual fluid at the supraspinatus with a consistent cortical irregularity. In follow-up with the patient, at 16 months after the initial injection, she reports that her range of motion and strength continue to allow her to conduct all her desired daily activities.

Literature Search

A PubMed search was performed in March 2012, in preparation for publication, using the term “Shoulder Injury Related to Vaccine Administration” for all time periods and limited to English language publications, which returned a single article.1 The article was obtained and its 15 citations were reviewed for pertinence yielding 6 citations. These 6 articles then had their citations reviewed, which led to 2 more relevant articles, neither of which identified additional pertinent citations. The search terms were broadened for “vaccine related shoulder dysfunction,” which only returned the article which prompted the term’s search.

Discussion

A search of Vaccine Adverse Event Reporting System data from 2010 to 2012 for adverse events that included influenza vaccination and joint complaints revealed 1068 entries. When further limited to the word “shoulder” in the adverse event description, there were 40 males (3.7%) and 127 females (11.9%) that made up the reports.2 There is no way to be certain of the total number of influenza immunizations given during this time period; however, a conservative estimated from the Centers for Disease Control and Prevention surveying mechanism reveals that approximately 43% of the US population (age >6 months) got seasonal influenza immunization in the 2010 to 2011 season.3 The relatively small numbers of adverse reactions reinforces the concept that adverse reactions, specifically those involving the shoulder, are very rare. The purpose of this case report is not to further vaccine hesitancy but to broaden differential diagnoses when shoulder pain presents in the clinic in the context of prior immunization.

This patient developed signs and symptoms consistent with previously described cases of shoulder injury related to vaccine administration (SIRVA) in the literature. The patient was female, previously exposed to the influenza vaccine, and developed multiple shoulder injuries almost immediately after vaccine administration. A case series from Atanasoff described 13 cases, of which 11 were female (85% of the cases); 8 involved influenza vaccine (62%) and 12 involved onset of signs and symptoms immediately or within 24 hours of administration.1 This case series reported that average body mass index was 27.2 kg/m2. A case series by Bodor4 described 2 similar cases: 1 occurring after seasonal flu vaccine administration and 1 occurring after polyvalent pneumonia vaccine administration; this case series did not comment on the body mass index or body habitus of the cases. A review of the literature demonstrates a lack of data on SIRVA. There have only been 2 studies and a total case load of 15 patients making this a rare vaccination-related injury. However, cases are likely underreported, leading to an unknown incidence and a lack of literature.

The authors of these case series suggested that SIRVA is due to an inflammatory effect from vaccine administration into the subdeltoid bursa. This inflammatory response may be due either to the antigenic or nonantigenic components of the vaccine (antimicrobial, preservative, etc). They based these assumptions on the consistent presentations of adhesive capsulitis (as demonstrated by the patient’s pain, lack of motion, weakness, and impaired mobility/functionality) and multiple noted pathologies on imaging, more than would be expected by the trauma of vaccination. Previously, there was only a single documented case of bone friability in SIRVA.1 This current case has a previously unreported finding of persistent cortical irregularity, making a stronger case for the inflammatory response of the vaccine as the pathogenic factor of SIRVA.

Although there have been numerous studies discussing the potential dangers of underpenetration at the time of administering vaccines (including skin reaction and possible decreased immunogenicity), there is a surprising lack of data about side effects from overpenetration. Current Centers for Disease Control and Prevention guidelines state that a 1-inch needle depth is appropriate for most patients (except for persons >200 lbs or newborns),5,9 which is a seemingly “one-size-fits-all” approach for an increasingly diverse population. A study of MRI deltoid fat pads by Lippert found that with using 5/8-inch, 7/8-inch, or 1-inch needles for intramuscular deltoid injections would cause 11% (16 of 150), 55% (83 of 150), and 61% (92 of 150) of patients to experience overpenetration, respectively.6

Based on Lippert’s study, corroborated by an ultrasonographic study of deltoids by Koster7 and Poland,8 a compelling argument could be made to change vaccination technique. Lippert suggests a weight-based vaccination technique: for instance, that a 1/2-inch needle be used for any female who weighs up to 70 kg and any male who weighs up to 75 kg. A 5/8-inch needle is recommended for any female who weighs between 70 and 115 kg and any male who weighs between 75 and 140 kg. A 7/8-inch or longer needle should be used for any female who weighs 115 kg and any male who weighs 140 kg. This recommendation could conceivably create a 0% overpenetration rate and a 10% underpenetration rate. The patient in this case, at a weight of 120 lbs (54 kg), would have had a ½-inch needle length, half the size of the needle recommended. These methods could potentially prevent SIRVA as well as other problems associated with overpenetration of vaccination.

Conclusions

Consider SIRVA as part of the differential diagnosis in patients presenting with acute shoulder pain after vaccine administration. This case serves as a reminder for what may be an underreported condition. This underreporting may be due, in part, to the Vaccine Adverse Event Reporting System being a passive reporting mechanism or to concerns for medicolegal implications for reporting. Additionally, the vaccine over penetration that likely led to SIRVA could have been prevented by refining the Centers for Disease Control and Prevention’s current injection guidelines.

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Wondering what to do if diagnosed with SIRVA or any other vaccine injury? Contact the experienced vaccine injury lawyer at the Law Offices of Leah V. Durant, PLLC today. This vaccine attorney has been admitted to the “vaccine court” and is fully equipped to process and represent your claim. Knowledgeable staff is available seven days a week to answer your questions and to review your case quickly and efficiently to determine the viability of your vaccine injury claim — all at little or no cost to you. To request additional information about SIRVA, call The Law Offices of Leah V. Durant, PLLC today at 202-775-9200 or by emailing info@vaccinelaw.com.


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