Showing posts with label general anesthesia. Show all posts
Showing posts with label general anesthesia. Show all posts

Wednesday, 13 November 2013

General Anesthesia - Advantages and Disadvantages

It is important to take an active role in your own medical decisions. When faced with surgery, whether minor or major, Anesthesia is a large part of that surgery. Anesthesia controls pain levels so that there is not unbearable pain. Don't leave these important decisions to your doctor or the anesthesiologist (Dr. Andrew Snell). Become informed as to the choices you have and understand there are advantages and disadvantages to choosing General Anesthesia.

http://drandrewsnell.com

What is General Anesthesia - it is a state produced when a patient receives medications that create a controlled, reversible state of unconsciousness. When a person is under General Anesthesia they cannot be awakened even to secondary pain stimulus. They do not have the ability to remember what happened during the operation and are also unable to maintain adequate airway protection during the surgery so a ventilator is needed.

Some drugs that are often used as General Anesthesia include barbiturates or other hypnotic agents to induce sleep. Inhalation agents, opioids, and muscle relaxants as opposed to high concentrations of potent inhalation agents alone, is preferred for obstetrical applications.

One of the advantages to General Anesthesia is that it reduces intraoperative patient awareness and recall. You don’t want to have the patient remembering what happened during the surgery. It also allows for muscle relaxation for an extended period of time allowing for the doctors to do what they need to do. The use of General Anesthesia forces the need for a ventilator which may be a good thing in that it facilitates complete control of the airway, breathing and circulation. It also can be adapted to all procedures – especially if the extent or duration of the operation is unknown. Last but not least of the advantages of General Anesthesia is that it can be administered rapidly as in the case of an emergency and it is reversible.

Some of the Disadvantages to General Anesthesia are that it requires an increased complexity of care and associated costs. It also needs to have some degree of preoperative patient preparation. General Anesthesia can also induce physiologic fluctuations that require active intervention. Physiologic fluctuations are changes in oxygen, body temperature and cardiac arrhythmia just to name a few. Some lesser disadvantages to general anesthesia is nausea, vomiting, sore throat, headache, shivering and a delayed return to normal mental function.

It is essential that a patient communicates about their previous medical history such as kidney, heart or lung problems, alcohol status, diabetes, high blood pressure, smoking, stroke, jaundice and other psychiatric problems if any, to the doctor as such can have a direct affect on the anesthesia administered. The level of blood loss during a surgery can be greatly affected by the current medications taken by the patient. For example, aspirin can increase blood loss, so if the person is taking aspirin then he has to stop taking it a few days before the surgery. If these points are kept in mind, then risks can be minimized. Allergic reaction to the administered drug may occur in rare cases.

With all the advances in medications, monitoring technology and safety systems as well as highly educated anesthesiologists the risk associated by general anesthesia to a patient is very small. The mortality rate attributed to general anesthesia is said to occur at rates of less than 1: 100,000. So talk to your doctor and your anesthesiologist about the procedure and make an informed and wise choice as to what is best for you.

Saturday, 5 October 2013

Symptoms & Preventive Measures of Over Dose of Local Anesthesia

In the field of medical history, there have been many such inventions that have changed the way we view medicine and medical procedures. From a key-hole surgery to an open heart surgery, every medical procedure has evolved over time to cater to thousands of patients around the globe. One of the things that haven’t really changed for decades is the use of anesthesia in medical procedures. We are not new to this concept. Remember your dentist who pricked you with a needle before extracting that tooth. Yes, that is one of the many types of anesthesia available and in use in the medical industry. The main purpose of using anesthesia is to numb the portion that needs to be operated on. This helps in reducing pain considerably, which makes even the most painful of medical procedures a bit more bearable. Basically, there are three main types of anesthesia: General, Regional and Local. The type of anesthesia to be used depends on the medical procedure to be performed. However, it is always good to remember that like any other medical procedure, there is a need for caution while handling any of the three types of anesthetics. This is more important in regards to the administration of Local Anesthesia. The reason being, that Local Anesthesia is mostly administered by a doctor or a nurse whereas the other two types require specialized experts who are also called anesthetists. In this article, we are going to discuss one of the complications that could arise due to improper administration of Local Anesthesia and what can be done to prevent it.


Anesthetic Toxicity due to Over Dose:

This is one of the most common errors that can occur while administering Local anesthesia and may lead to Anesthetic Toxicity. This occurs when the level of anesthetic in the blood is very high. This may occur as a result of an intravascular injection or repeated injections. An overdose of Local Anesthesia may cause the following symptoms:

1.    Depression of the Central Nervous System
2.    Dizziness
3.    Anxiety
4.    Drowsiness
5.    Circumoral Numbness or Tingling
6.    Increased Heart Rate and Blood Pressure
7.    Unconsciousness and Respiratory Arrest
8.    Cardiac Arrest

Preventive Measures:
1.    Follow proper technique while administering Anesthetic.
2.    Doctors or Clinicians should be aware of the maximum dosage to be given based on the weight of the patient.
3.    After administration, the patient’s condition needs to be monitored in order to detect early symptoms of possible toxicity.

Other complications related with Local Anesthesia include allergic reactions, infections, paresthesia, and complications due to temporary nerve block like facial paralysis. Most complications will disappear as the affect of the anesthetic agent is neutralized.

Local Anesthesia has been used in medical procedures for quite some time now. As we discussed, there are a few things that demands caution. However, with proper technique, knowledge and a skilled pair of hands, anesthesia is truly one of the marvelous inventions of medical science.