Lidocaine Allergy: Do Positive Patch Results Restrict Future Use?

Clinically Important Pharmacologic Considerations for Wide-Awake Local Anesthesia No Tourniquet Hand Surgery

SUMMARY

Understanding the clinically important pharmacokinetics (what the body does to the drug) and pharmacodynamics (what the drug does to the body) of medications used in surgery will help surgeons use them more safely and effectively. The goal of this article is to provide an overview of these considerations for the 2 medications used in wide-awake local anesthesia with no tourniquet upper extremity surgery (ie, lidocaine and epinephrine) to establish a better understanding of lidocaine and epinephrine in tumescent local anesthesia, as well as adverse reactions and how to manage them.

Perioperative Anaphylaxie – alte Zöpfe und Neues zu den Auslösern

Perioperative Anaphylaxien werden mit mindestens 1:6000 angegeben. Neue Kenntnisse der Pathophysiologie der anaphylaktischen Reaktionen beziehen die Auslösung über das Mastzell-related G-Protein und die Komplementaktivierungs-abhängige Pseudoallergie mit ein. Neu beschriebene Auslöser sind das Chlorhexidin oder Gelatine-Produkte, eingesetzt zur Blutstillung oder blaue Farbstoffe zur intraoperativen Markierung. Wachsamkeit ist in Hinblick auf biphasische Reaktionen geboten. Propofol darf mittlerweile bei Ei- und Sojaallergikern eingesetzt werden.

Perioperative Anaphylaxie – alte Zöpfe und Neues zu den Auslösern

Perioperative Anaphylaxien werden mit mindestens 1:6000 angegeben. Neue Kenntnisse der Pathophysiologie der anaphylaktischen Reaktionen beziehen die Auslösung über das Mastzell-related G-Protein und die Komplementaktivierungs-abhängige Pseudoallergie mit ein. Neu beschriebene Auslöser sind das Chlorhexidin oder Gelatine-Produkte, eingesetzt zur Blutstillung oder blaue Farbstoffe zur intraoperativen Markierung. Wachsamkeit ist in Hinblick auf biphasische Reaktionen geboten. Propofol darf mittlerweile bei Ei- und Sojaallergikern eingesetzt werden.

Immunotherapy of lidocaine allergy by intravenous desensitization using IFN-gamma from a case: Overcoming impediments using IFN-gamma during desensitization

Anaphylactic reaction to lidocaine has been reported during a dental procedure. In this trial, a patient who required local anesthesia for dental treatment was desensitized successfully to intravenous lidocaine using IFN-gamma. Practical general protocols and principles are suggested for the general application of this method for other intravenous drugs.

Contact Allergy: A Review of Current Problems from a Clinical Perspective

Contact allergy is common, affecting 27% of the general population in Europe. Original publications, including case reports, published since 2016 (inclusive) were identified with the aim of collating a full review of current problems in the field. To this end, a literature search employing methods of systematic reviewing was performed in the Medline^® and Web of Science™ databases on 28 January 2018, using the search terms (“contact sensitization” or “contact allergy”). Of 446 non-duplicate publications identified by above search, 147 were excluded based on scrutiny of title, abstract and key words. Of the remaining 299 examined in full text, 291 were deemed appropriate for inclusion, and main findings were summarised in topic sections. In conclusion, diverse sources of exposures to chemicals of widely-differing types and structures, continue to induce sensitisation in man and may result in allergic contact dermatitis. Many of the chemicals are “evergreen” but others are “newcomers”. Vigilance and proper investigation (patch testing) are required to detect and inform of the presence of these haptens to which our populations remain exposed.

Risk of Immediate-Type Allergy to Local Anesthetics Is Overestimated-Results from 5 Years of Provocation Testing in a Danish Allergy Clinic

BACKGROUND

Local anesthetics (LAs) are used in many health care settings and exposure during a lifetime is almost inevitable. Immediate-type allergy to LAs is considered rare among allergy experts but is commonly suspected by health care workers from other specialties, and by patients.

OBJECTIVE

The main aim of this study was to investigate the incidence of immediate-type allergy to LAs in our regional allergy clinic over the 5-year period 2010 to 2014.

METHODS

This was a retrospective single-center study of patients referred to a regional allergy clinic (excluding patients with perioperative reactions) with suspected immediate allergy to LAs, who had undergone subcutaneous provocation with 1 or more LAs. Patients were identified in the hospital clinical coding system and clinical information about the reaction and investigation results was obtained from their medical records.

RESULTS

A total of 164 patients (123 women/41 men; median age, 56 years; range, 7-89 years) who had 189 provocations with LAs were included over the 5-year period 2010 to 2014. All 164 patients had negative subcutaneous provocations to all 189 tests with LAs (95% CI, 0%-1.83%). Another allergen was identified in 10% (n = 17) of the patients.

CONCLUSIONS

None of the 164 patients with suspected immediate-type allergy to LAs reacted on provocation. Thus, no patients have been diagnosed with an immediate allergy to LAs in our regional allergy clinic in the 5-year period studied, and allergy to LAs must be considered very rare. Alternative mechanisms should be considered, but if symptoms are consistent with allergy, other potential allergens should be investigated.