Correction to: Carfentanil: a narrative review of its pharmacology and public health concerns.

In the article entitled: "Carfentanil: a narrative review of its pharmacology and public health concerns" published online and in the April 2019 issue of the Journal, Can J Anesth 2019; DOI: https://doi.org/10.1007/s12630-019-01294-y , the Figure showed the wrong structures for remifentanil and carfentanil.

Carfentanil: a narrative review of its pharmacology and public health concerns.

Carfentanil is a synthetic fentanyl analogue approved for veterinary use. It is a mu-opioid receptor agonist with an estimated analgesic potency approximately 10,000 times that of morphine and 20-30 times that of fentanyl, based on animal studies. Since 2016, an increasing number of reports describe detection of carfentanil in the illicit drug supply.

Remote sensing and in situ measurements of methane and ammonia emissions from a megacity dairy complex: Chino, CA.

Methane (CH) and ammonia (NH) directly and indirectly affect the atmospheric radiative balance with the latter leading to aerosol generation. Both have important spectral features in the Thermal InfraRed (TIR) that can be studied by remote sensing, with NH allowing discrimination of husbandry from other CH sources. Airborne hyperspectral imagery was collected for the Chino Dairy Complex in the Los Angeles Basin as well as in situ CH, carbon dioxide (CO) and NH data.

Impact of Reported Beta-Lactam Allergy on Inpatient Outcomes: A Multicenter Prospective Cohort Study.

Background: Reported allergy to beta-lactam antibiotics is common and often leads to unnecessary avoidance in patients who could tolerate these antibiotics. We prospectively evaluated the impact of these reported allergies on clinical outcomes.

Methods: We conducted a trainee-led prospective cohort study to determine the burden and clinical impact of reported beta-lactam allergy on patients seen by infectious diseases consultation services at 3 academic hospitals.

Optical re-injection in cavity-enhanced absorption spectroscopy.

Non-mode-matched cavity-enhanced absorption spectrometry (e.g., cavity ringdown spectroscopy and integrated cavity output spectroscopy) is commonly used for the ultrasensitive detection of trace gases.