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Anesthesia and its risks ASA and Introduction to Anesthesia

Table Of Contents

    Introduction

    Anesthesia; It is a state of analgesia and amnesia that occurs with the suppressed responses of the central nervous system (CNS) to painful stimuli.

    Neuroleptanalgesia

    It is analgesia performed by combining a narcotic analgesic drug (fentanyl) and a neuroleptic drug (dehydrobenzperidol, droperidol, haloperidol) by the IV route.


    Neuroleptanesthesia

    It is anesthesia created by adding nitrous oxide to the combination of neurolept analgesia.

    Since these combinations are dopamine receptor blockers, their use in patients with Parkinson's is contraindicated.


    Neurolept Analgesia: Fentanyl + Dreperidol

    Neurolept Anesthesia: Fentanyl + Dreperidol + Nitrous oxide


    Balanced Anesthesia

    It is a combination of nitrous oxide + a narcotic (Fentanyl) + Thiopental + Neuromuscular blocker. 

    General Anesthesia Topics













    • ASA (American Society of Anesthesiologists) determined the risk of anesthesia according to the physical condition of the patients.

    ASA 1

    A healthy person who does not have a disease or systemic problem other than a normal surgical pathology that does not cause systemic disorders.

    ASA 2

    Person with a mild systemic disorder due to a cause requiring surgical intervention or another disease

    ASA 3

    A person with a disease (such as hypovolemia, previous infarction, advanced diabetes) that limits his activity but does not leave him weak

    ASA 4

    A person with life-threatening (shock, decompensated heart and respiratory failure, kidney failure) who completely loses his strength

    ASA 5

    Person in a state of death, who is not expected to live more than 24 hours, whether or not he has surgery, who undergoes surgical intervention as the last hope

    ASA 6

    Patients with brain death whose organs were removed for the purpose of donation

    E

    If the operation is urgent, the letter E is written after the physical state.

    Potential Risk Factors for Perioperative Pulmonary Complications

    Patient Factors

    • Advanced age

    • Smoking

    • Chronic obstructive pulmonary

    • disease Obesity

    • Obstructive sleep apnea

    Surgical Factors

    • Incisions close to the diaphragm (such as thoracic, upper abdominal procedures, abdominal aortic aneurysm repair)

    • Long-running transactions

    • General anesthesia (relative to regional)


    Summary of Fasting Guidelines as Pulmonary Aspiration Prophylaxis

    Item Received ...... ...................... ........ ........... ........................ Minimum Fasting Time (hours)

    Clear liquids (water, carbonated drinks, tea, coffee) ------------------------------- 2

    Breast milk--------------------------------------------------------------------------------4

    Baby food------------------------------------------------ -------------------------------- 6

    Milk other than breast milk------------------------------------------------------------ 6

    Light meal (toast clear liquids) ------------------------------------------------------- 6

    Heavy food (oily foods) --------------------------------------------------------------- 8


    Premedication

    It is the preparation of patients for the operation using drugs.

    Purposes of premedication: Eliminating anxiety, reducing secretions, reducing various autonomic reflex responses, providing amnesia, providing analgesia, sedation, antiemetic effect, reducing anesthetic requirement by reducing metabolic activity, facilitating anesthesia induction, reducing gastric fluid volume and increased pH, To provide prevention of allergic reactions, to relieve excitement before regional anesthesia, to increase the local anesthetic effect, special conditions (transdermal nitroglycerin in angina). 

    Drugs used in premedication

    Antiemetics

    Anticholinergics; atropine, scopolamine

    H1 histamine antagonists; cyclizine, diphenhydramine, promethazine

    dopamine antagonist; phenothiazine, butyrophenone, metoclopramide

    sedatives and hypnotics

    • Butyrophenones; pentobarbital, secobarbital

    • Antihistamines; diphenhydramine, hydroxyzine. Chloral derivatives; triclophos Na, chlorhydrate

    tranquilizers

    Butyrphenones; haloperidol, droperidol

    Phenothiazines; chlorpromazine, promethazine, promazine

    Benzodiazepines; diazepam, nitrazepam, temazepam

    Narcotic analgesics

    Morphine, dolantin, fentanyl, buprenorphine

    Anticholinergics

    Atropine, scopolamine, glycopyrrolate

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