92501

Increase the rate of liver metabolism of local anesthetic: Alpha adrenergic agonists, such as epinephrine, are often added to local anesthetics to enhance their effectiveness. They achieve this by causing vasoconstriction at the injection site, which reduces bleeding and increases the duration of anesthesia. However, they do not directly increase the concentration of LA at the receptor site or alter liver metabolism. Therefore, the correct answer is 2) Increase the concentration of LA at receptor site.

46182

In the extraoral technique for mandibular nerve block, the needle is inserted into the pterygomandibular space anterior to the lateral pterygoid plate and directed anteriorly to avoid damaging the maxillary artery and other important structures located posteriorly. The goal is to place the anesthetic solution around the mandibular nerve before it enters the pterygopalatine fossa.

57895

Sterilizing units should be monitored weekly to ensure proper function and efficacy in killing bacteria and other microbes. This is done through biological, chemical, and physical indicators.

44541

Cervicofacial emphysema is a condition where air becomes trapped in the soft tissues of the face and neck. It is usually a benign, self-limiting condition that resolves on its own without specific intervention.

25003

Angioneurotic edema, also known simply as angioedema, is a condition characterized by sudden, temporary, and recurrent swelling of deep layers of the skin and mucous membranes, often in areas like the lips, eyelids, or genitals.

81170

Lidocaine is an example of an amide.

36387

Nasopharyngeal angiofibroma is a rare, benign, but locally aggressive tumor that arises in the nasopharynx. It is notable for occurring almost exclusively in adolescent males.

54345

Injecting local anesthetic solution slowly helps to minimize discomfort for the patient and reduces the risk of systemic toxicity. A common guideline for a volume of 1.8 ml or 2 ml is to inject it over at least 60 seconds (1 minute), or even longer.

70214

A prothrombin time of 45 seconds (normal 11-15 seconds) indicates severe coagulopathy and contraindications extraction. This prolonged PT suggests either excessive anticoagulation or severe liver dysfunction, both of which significantly increase bleeding risk. The procedure should be postponed until coagulation parameters are normalized.

80512