NORA - Exam 6 Flashcards

1
Q

Which kind of anesthesia ensures amnesia?

A

general

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2
Q

How must your meds be labeled?

A
  1. Drug name
  2. Strength
  3. Amount (if you can’t tell from the container)
  4. expiration date (if not using within 24 hours)
  5. time
  6. initials
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3
Q

Does mild sedation need etCO2 per AANA?

A

no

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4
Q

When do you have to monitor temperature? When is it optional?

A

Standard: GA
Optional: mild, moderate, deep sedation

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5
Q

What age of child is at greatest risk for adverse events of sedation? What are these events?

A

Less than 5 years of age; respiratory depression, apnea etc

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6
Q

What is the relationship between length of surgery and adverse reactions?

A

Less than 1 hour, reduced amount of adverse reactions

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7
Q

What is the cause of most adverse anesthetic events?

A

Multiple anesthetic agents being used

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8
Q

NPO for food/non-clear liquids for:
<6 months
6-36 months
>36 months

A

< 6 months: 4-6 hours
6-36 months: 6 hours
36< months: 6-8 hours

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9
Q

What is cardioversion?

A

Synchronized countershock to the R wave of the QRS to convert unstable afib/flutter, stable VT

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10
Q

How does cardioversion work?

A

Closes an excitable gap in the myocardium, causing currents to re-enter and excite the electrical system of the heart

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11
Q

Do patients need to be NPO for cardioversion?

A

No if emergent
Yes if non-emergent

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12
Q

Optimal shock conversion for afib/flutter

A

50-100 J
up to 360 J

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13
Q

Paddle placement for cardioversion

A
  1. Parasternally over 2nd to 3rd intercostal space
  2. Other paddle over apex of the heart
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14
Q

Anesthetic technique for cardioversion

A
  1. TIVA
    -Versed beforehand
    -Propofol/etomidate as anesthetic (IV)
  2. Muscle relaxant NOT necessary
  3. MUST intubate if patient has not fasted (anesthetic plan is changed to general ETT)
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15
Q

What is radiofrequency catheter ablation?

A

Catheter with an electrode on the tip guided on fluoroscopy to an area of the heart muscle that demonstrated accessory electrical conductivity

-Usually for SVT, but can treat other arrhythmias

-Catheter guided via femoral artery and vein to the area of accessory electrical pathway or internal jugular

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16
Q

What is cryoablation?

A

liquid nitrous oxide cause -22 to -75 C
-Safer in AV node region compared to RFCA

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17
Q

What is ice mapping?

A

Temporary freezing to see if it will fix the arrhythmia, if it does, cool further to permanently destroy tissue

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18
Q

Retrosternal angina pain of mild/moderate intensity for 1-2 minutes. Is this normal during RFCA?

A

yes

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19
Q

Anesthetic choice for RFCA

A

-Moderate sedation + local +analgesia
-Kids: use LMA/GETT

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20
Q

Why is TIVA ideal for RFCA?

A

Because the pulmonary artery is occluded, resulting in a loss of 25% of CO
-Interferes with inhalation of volatile anesthetics

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21
Q

What is important to monitor during RFCA?

A

ECG
-Patient stops taking all antiarrhythmics before this procedure

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22
Q

Possible injury as a result of RFCA?

A

1.Thermal injury to esophagus during RFCA of left atrium
-Arterioesophageal fistual can occur!
2. CVA
3. Cardiac tamponade
4. Aortic valve damage

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23
Q

Is it okay if there is space between the esophageal probe and the esophagus? What is the purpose of using an esophageal probe?

A

No; to monitor the temperature of the left atria – don’t want thermal injury

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24
Q

Most electrophysiology procedures require MAC. Which electrophysiology procedures require GETT

A

RFCA Atrial fibrillation
V-Tach/V-Fib RFCA WITH epicardial approach
Lead extraction

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25
Q

Is endoscopy okay for pregnant women?

A

Yes; but should be delayed until after delivery if possible

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26
Q

Which drugs are okay to give in pregnancy?

A

Most IV drugs, except versed
-Can give versed, but it crosses placental barrier and creates CNS depression
Volatile anesthetics (unsure)
No N2O

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27
Q

What does endoscopy do to aspiration risk?

A

increases

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28
Q

What is the position/anesthetic technique for endoscopy?

A

moderate/deep sedation MAC
supine or LLD

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29
Q

What additional medication should be considered with upper endoscopy?

A

antisialogogues

30
Q

Colonoscopy position and anesthetic technique

A

Deep sedation, sometimes GA
Left lateral decubitus

31
Q

Adverse event that can occur due to colonscopy procedure?

A

Vagal response
-Distention of the colon

32
Q

ERCP preoperative assessment includes what labs?

A

CBC
liver chemistry
amylase/lipase levels
clotting function

33
Q

ERCP preoperative assessment includes what particular patient issues?

A

-Use of anticoagulants
-Bleeding history
-Prothestic heart valves
Risk of bleeding in general
-Allergies to IV contrast

34
Q

What is the position/technique for ERCP?

A

Deep sedation or general ETT
Prone, semi-prone or LLD

35
Q

What are emergent concerns with endoscopy, colonoscopy and ERCP?

A

Vomiting, aspiration, laryngospasm, bleeding, severe bradycardia, hypotension, bowel rupture, or duct rupture

36
Q

How does CT work?

A

Dense structures reduces energy of x-ray beam

37
Q

How does MRI function?

A

Dipole movement of the hydrogen atom

38
Q

What is the fringe field of the MRI?

A

Electromagnetic energy greatly drops off just outside the margins of the bore of the electromagnet

39
Q

Zones of the MRI?

A

Zone 1: Freely accessible
Zone 2: MRI personnel determine who passes through here
Zone 3: Restricted area, can only enter after being screened for ferromagnetic material
Zone 4: MRI scanner room (is within zone 3)

40
Q

Anesthesia considerations For CT?

A

-Patient must be supine
-Full spectrum of anesthesia may be delivered
-Anaphylaxis from ICM
-Diabetic patients cannot take metformin –> lactic acidosis

41
Q

What increases risk for ICM anaphylaxis

A
  1. Asthma history**
  2. hx of allergy***
  3. multiple morbidities
  4. HOCM
42
Q

How to treat anaphylactoid reaction of ICM?

A

-Corticosteroids (pretreatment)
-H1 and H2 blockers

43
Q

Safe metals for MRI?

A

Stainless steel
nonferrous
nickel
titanium

44
Q

What could happen to cardiac pacemakers in the MRI?

A

Literally anything

45
Q

Potentially harmful items in MRI?

A

-Penile implants
-brain/dorsal column stimulators
-Heart valves
-AICD
-permanent eyeliners/tattoos
-prosthesis
-implanted pumps
-internal metal plates
-aneurysm clips
-metallic sutures
-shrapnel
-tissue expanders with metallic ports

46
Q

How to prevent induced current and tissue loops?

A

Ensure leads and IV tubing are NOT touching the patient at all
Patient tissue should be touching itself
-e.g. hand cannot touch thigh, legs cannot touch each other

47
Q

Does MRI affect pregnant women?

A

no

48
Q

Technique of anesthetic for IR?

A
  1. Full spectrum, mostly GA
  2. Goal is to have rapid recovery so you can assess patient neuro status
49
Q

What is the antidote to heparin?

A

Protamine 1 mg/100units of heparin

50
Q

Why are pediatric patients (<5) at greatest risk for adverse effects?

A

Overmedication; apnea, respiratory depression, respiratory obstruction

51
Q

AICD components

A

Pulse generator
Lead electrode

52
Q

Cardiac pacemaker types

A

Unipolar - Generator is used at other pole
-More susceptible to interference
Bipolar

53
Q

What is generally the underlying rhythm (2) in a patient with an AICD?

A

Pulseless Vtach or Vfib

54
Q

After the leads are placed procedurally for AICD placement, is the next part of the procedure stimulating?

A

Yes; they may also induce vfib

55
Q

AICD
-Vfib treatment
-V-tach treatment

A

Vfib - shock in 10-15 seconds
V-tach anti-tachycardic pacing

56
Q

Which arrhythmia in pediatrics is most commonly treated with radiofrequency ablation?

A

SVT

57
Q

Why is glycopyrrolate used during colonoscopy?

A

Bradycardia
Anti-peristalsis to pass into the cecum

58
Q

At what point during an EGD/colonoscopy is the most stimulating part

A

Dilator insertion
-Give propofol before this portion

59
Q

For NORA cardiac procedures, what should always be on the patient in case of emergency?

A

Transcutaneous pacing pads

60
Q

Three rhythms requiring AICD placement; most common population characteristics?

A

SVT
-Young, healthy
-Symptomatic

Ventricular Dysrhythmias
-Elderly
-Low EF, CAD, CHF

-Low EF, BBB
-Paces both ventricles

61
Q

Definition of contrast-induced renal impairment?

A

Cr increase by 0.5 mg/dL

62
Q

When does contrast media renal impairment show up? For how long

A

24-48 hrs up to 5 days

63
Q

How can you lessen contrast media renal impairment?

A

IV hydration (increase extracellular fluid)
Smaller doses of dye
DC nephrotoxic drugs
Acetylcesteine

64
Q

What adverse system outcome can occur specifically because of the MRi procedure?

A

Nephrogenic systemic fibrosis
-Caused by gadolinium contrast agent
-Scleroderma internally and externally
-Occurs days/months after exposure
-Renal impairment puts you at risk

65
Q

What kind of cylinder can enter the MRI?

A

Aluminium!
“Brushed metal”

66
Q

Elective cardioversion
-indications

A

-Afib
-aflutter
-SVT

67
Q

Elective cardioversion
-anesthesia mgmt
-equiptment

A

-review labs (cbc, coags, lytes), EKG, NPO status
-IV agents: benzos, thiopental, methohexital, etomidate (myoclonus may interfere with rhythm interpretation) propofol
-good depth of anesthesia, shock, monitor airway/recovery

-monitors, O2 source, NRB, suction, crash cart, airway equiptment

68
Q

Cardioseal
-indications
-process

A

closure of septal defects (PDA, ASD) by deploying umbrella device
-fem access needed + use of contrast + introducer to place device (can have hoTN in this moment)

69
Q

Cardioseal
-equipment
-anesthesia mgmt

A

-AGM, cart, monitor, airway equipment and drugs

-GA + ETT REQUIRED due to continuous TEE, possibly need pt immobile
-maybe art line, maybe fluoro
-1.5-2hr case
-pt monitored 24 hrpostop

70
Q
A