Principles Exam II Flashcards
Humalog
diabetes
Seroquel
schizophrenia
Strattera
ADHD
Zostavax
shingles vaccine
Chantix
smoking cessation aid
nicotinic receptor partial agonist
Evista
osteoporosis
also reduces risk of breast cancer
Combivent Respimat
COPD and asthma
albuterol and ipatropium inhaler
Avodart
Benign Prostatic Hypertrophy
Pradaxa
anticoagulant
Pristiq
depression
LoLoestrin Fe
birth control
Focalin XR
ADHD
Travatan Z
glaucoma
Lumigan
glaucoma
Vytorin
cholesterol
Toprol XL
beta blocker
Lunesta
sleep aid
Janumet
diabetes
Exforge
hypertension
Exelon
(rivastigmine)
Alzheimer’s
Humira
rheumatoid arthritis
Victoza
diabetes II
Welchol
diabetes
Combigan
glaucoma
Onglyza
diabetes II
Xoponex
asthma
Detrol LA
urinary incontinence
Enbrel
rheumatoid arthritis and psoriatic
Dulera
steroid and bronchodilator
Ranexa
chronic angina
Truvada
HIV
Avapro
anti-hypertensive
Ultram
(tramadol)
narcotic
Synthroid
hypothyroidism
Spironolactone
diuretic for high blood pressure
Protonix
acid reflux
proton pump inhibitor
Thiamine
vitamin B1 deficiency
Prochlorperazine
nausea and vomiting
can treat anxietyand schizophrenia
Tegretol
seizures and nerve pain
Amaryl
type II diabetes
Mobic
(meloxicam)
osteoarthritis and rheumatoid arthritis
NSAID
Allopurinol
kidney stones and gout
reduces uric acid
Prednisone
steroid for inflammation
Voltaren
NSAID
Ultracet
acetaminophen and tramadol
Deplin
B vitamin deficiency
depression
Dexilant
acid reflux
proton pump inhibitor
Imuran
immunosuppressant for arthritis
Bronchopleural Fistula
buildup of air in the pleural space
- concern with positive pressure ventilation
- need to use low pressures so you do not force air into that pleural space
Bullectomy
surgical removal of an air pocket in the lung
- more commonly seen in patients with emphysema
Considerations for Bullectomy and volume reduction pneumoplasty
- single-lung ventilation
- avoid PEEP
- minimize use of long-acting respiratory depressants
- restrict administration of intravenous fluids
Intraoperative Complications of Bullectomy with volume reduction pneumoplasty
- tension pneumothorax
- pneumothorax
- hypoxia
- hypercarbia
Decortication
removal of fibrous surface layer tissue over an organ
Hunsaker tube
allows jet ventilation during bronchoscopy
- can also measure CO2
Portex Adaptor
allows ventilation while someone is visualizing with a bronchoscope
Cessation of smoking for _____ weeks is associated with decreased incidence of postoperative respiratory complications
4 - 8 weeks
- decreases sputum production
- improves ciliary activity
Cancer Classification
T - cell type
N - lymph node involvement
M - metastatic spread
VAT
Video-assisted thoracoscopy
Pleurodesis
treatment for pneumothorax that stick the membranes of the lungs back together
- talc or tetracycline
Unique considerations for Esophagectomy
- single-lung ventilation
- anticholinergic drug to block carotid sinus reflex
- avoid N2O with abdominal surgery
- increased risk for aspiration
Intraoperative Complications of Esophagectomy
- aspiration
- bradycardia
- dysrhythmia
- hemorrhage
- hypotension
- Hypoxia and hypercapnia
- recurrent laryngeal nerve injury
- tacheal tears
Bleomycin
cancer treatment
- risk of pulmonary toxicity when given 100% oxygen
Doxorubicin
Cancer treatment
- potential cardiac damage
- check echocardiogram
LASER
Light Amplification by Stimulated Emission of Radiation
What is the most common laser?
CO2
Most common jet ventilator
Sanders
Mediastinoscopy
supine position and neck extended, incision through the suprasternal notch
Unique considerations for Mediastinoscopy
- place BP cuff on left
- avoids artifact induced by artery compression
- place pulse ox on right hand
- detects brachiocephalic artery compression
Intraoperative complications of Mediastinoscopy
- air embolism
- asthma
- dysrhythmia
- hemorrhage
- neurologic event
- perforation of esophagus
- pneumothorax
- respiratory compromise
- recurrent laryngeal nerve injury
Ventilation during Mediastinoscopy
single-lumen tube
Tracheal malacia
weakening of the trachea due to compression
Papilledema
optic disc swelling that is caused by increased intracranial pressure
- clinical finding associated with mediastonal masses
Cardiovascular symptoms of Mediastinal Masses
- jugular distension
- neck or facial edema
- orthostatic hypotension
- papilledema
- pulsus paradoxus
Anesthesia for Medistonal Mass
preferably awake
- spontaneous ventilation should be maintained
Ventilation of Medistonal Mass
spontaneous ventilation
- flexible bronchoscope
Unique considerations for Medistonal Mass
- avoid muscle relaxants
- cardiovascular collapse
- inability to ventilate
- superior vena cava syndrome
Intraoperative complications of Medistonal Mass
- bleeding
- hypotension
- hypoxia
- obstruction of airway
Superior Vena Cava Syndrome
obstruction of vena cava that impedes venous flow from the head and upper extremities
- occurs mainly in lung carcinoma patients
Pathophysiology of Superior Vena Cava Syndrome
- decreased venous return
- development of collateral venous circulation
- increased peripheral venous circulation and pressure
Cardiac features of Superior Vena Cava Syndrome
- cyanosis
- distended veins over chest wall
- edema
- tachycardia
- thoracic and cervical venous distension
thoracic outlet syndrome
compression of neurovascular bundle at the thoracic outlet between the 1st rib and clavicle
Therapy for Myasthenia Gravis
- anticholinesterase
- corticosteroids
- immunosuppressant
- thymectomy
Myasthenia Gravis
neuromuscular junction disorder causing weakness and rapid fatigue
- antibodies attach to post-synaptic acetylcholine receptors
2 anticholinesterases for Myasthenia Gravis
neostigmine or pyridostigmine
Preoperative considerations for a Thymectomy with Myasthenia Gravis
- assess respiratory function
- evaluate strength
- review anticholinesterase medications
Ventilation for a Thymectomy with Myasthenia Gravis
usually single lumen tube
- double lumen tube if by VAT surgery
Unique considerations for a Thymectomy with Myasthenia Gravis
increased sensitivity to muscle relaxants
risk of remaining intubated
Hemoptysis
coughing up blood
- massive indicates greater than 600mL
- mostly caused from pulmonary artery rupture from catheterization
Causes of Massive Hemoptyis
- tuberculosis
- lung abscess
- cystic fibrosis
- pulmonary embolus
- mitral stenosis
Ventilation for Foreign Body Retrieval
maintain spontaneous ventilation
Unique Considerations for Foreign Body Retrieval
- respiratory status
- sedation as tolerated
- antisialagogue
- precautions for “full stomach”
- Metoclopramide
- H2 - blocker
- cricoid pressure
Complications for Foreign Body Retrieval
- loss of airway
- hypoxia
- cardiac arrest
- aspiration
- hemoptysis
Zenker’s Diverticulum
outpouching of the pharyngeal mucosa
- high risk of aspiration
- risk of perforating it with ETT
What hormone makes your feet bigger while pregnant?
Relaxin
Cardiovascular changes during Pregnancy
- increases cardiac output
- SVR decreases
- Blood volume increases 35%, mostly plasma
- Down regulation of alpha/beta receptors
- less responsive to vasopressors and chronotropic agents
- Caval compression
- decreased venous return to right atrium and therefore decreased CO
- treat with left uterine deplacement
Respiratory changes during Pregnancy
- vascular engorgement of airway
- Oxygen consumption increases
- increased minute ventilation by 3-4 L/min
- decrease in FRC
- can only tolerate 2-3 min of hypoxia
Hepatic changes during Pregnancy
- little to no change in blood flow
- decreased pseudocholinestersase
- decreased colloid oncotic pressure
Hematologic changes during Pregnancy
- plasma volume increases by 45%
- “anemia”
- HgB < 11 g/dL is abnormal
- hypercoagulable state
What is the leading cause of maternal mortality?
thromboembolism
greatest risk for DVT and PE immediately after delivery
Endocrine changes during pregnancy
- insulin resistance
- thyroid gland enlarges 50-70%
Renal changes during Pregnancy
- renal plasma flow and GFR increase
- BUN and Cr decrease
CNS changes during pregnancy
- pituitary increases in size
- brain decreases
How does pregnancy affect MAC?
MAC for inhaled anesthetics is decreased up to 40% during pregnancy
Normal fetal heart rate
110-160 bpm
Term Labor
38-40 weeks
EDC
expected date of confinement
“due date”
EGA
estimated gestational age
Risk Factors of Preterm Labor
- history of preterm labor
- infection
- diabetes
- hypertension
- asthma
- smoking, alcohol, cocaine
Neonate
first 30 days out of uterus
Indomethacin
prostaglandin synthetase inhibitr
- reduces preterm labor
- may constrict ductus arteriosus
Tocolysis
drug therapy used to reduce preterm labor
uses Nifedepine and Indomethacin
Nifedipine for tocolysis
CCB that relaxs the myometrium
chorioamnionitis
infection that occurs within the uterus when the membranes around the amniotic fluid have broken
Pre-eclampsia
abnormally high blood pressure typically during the 20th week of gestation
- proteinuria
- edema
- decrease in intravascular volume
- elevated Cr and BUN
- elevated hemoglobin
Eclampsia
pre-eclampsia with CNS involvement leading to seizures
- severe eclampsia characterized by end-organ disease
What do you give to reduce seizures?
magnesium sulfate
also diazepam and phenytoin
Risk factors for Pre-eclampsia
- asthma
- diabetes
- first pregnancy
- hypertension before pregnancy
- lupus
- kidney disease
- maternal age (<20 or >40)
- multiple births
- obesity
- scleroderma
Most common death due to pre-eclampsia
intracerebral bleeding
(2) major causes of antepartum hemorrhage
placenta previa and placental abruption
Placenta previa
placenta completely covers the mother’s cervix
- must have C-section if complete previa
- acreda, increda, and percreda
- percreda is worse; patient will continue to bleed if any placenta is left in the uterus
Placental abruption
placenta peels away from the inner wall of the uterus before delivery
risk factors for placenta abruption
- advanced maternal age
- cocaine
- diabetes
- high blood pressure
- history of
- multiple pregnancies
- pre-eclampsia
- smoking
organogenesis
primary organs are developing
- first 56 days
- most susceptible to teratogenic defects
Drugs for uterine atony
Oxytocin (patosin) or Methergine
Symptoms of local anesthetic toxicity
- tinnitus
- metalilic taste
- circumoral numbness
Signs of Local Anesthetic Toxicity
- altered mental status
- seizures
- hypotension
- bradycardia
- ventricular arrhythmias
- cardiovascular collapse
Treatment for Local Anesthetic Toxicity
1.5 mL/kg bolus of 20% intralipid IV
then infusion at 0.25 mL/kg/min
What do you avoid in local anesthetic toxicity
vasopression, CCB, BB, and local anesthetics
Where does the spinal cord terminate?
conus medullaris
L1-L2 in adult
CSF production
choroid plexus of the ventricles
Contents of epidural space
fat, venous plexus, and segmental arteries
Common spinal needle for cutting
Quincke
pencil-point spinal needles
Whittacre, Sprotte, and Gertie-Marx
gauge of typical epidural needle
16-20
Most common epidural needle
Tuohy
Which type of neuraxial anesthesia is used in a foot surgery?
spinal
sacral roots are only anesthetized with a spinal
Intercrestal Line
top of the hips
around L4-L5
Contraindications for neuraxial anesthesia
- patient refusal
- hypovolemia
- infection at site
- increased intercranial pressure
- coagulopathy (platelet < 90,000)
Minor contraindications include peripheral neuropathy and sepsis
Spinal height for upper abdominal and C-section
T4-T5
Spinal height for appendectomy
T6-T8
Spinal height for vaginal delivery, prostate, and hips
T10
Spinal height for lower extremity surgeries
L2-L3
spinal height for perineal procedures
S1-S2
Where are epidurals usually placed?
under L2
can place one higher, but risk of spinal cord injury
Order of tissues in spinal block
skin
subcutaneous tissue
supraspinous ligament
interspinous ligament
ligamentum flavum
dura
arachnoid into subarachnoid space
Which epidural approach is better for elderly?
paramedian
older patients have calcification
Hyperbaric
dextrose added
solution will fall
Hypobaric
add sterile water
solution will rise
Isobaric
add CSF or saline
Why do pregnant women requires less local anesthetic?
- progesterone changes
- vascular engorgement
- less space
- shape of spinal cord
Fentanyl in Neuraxial anesthetics
100 mcg - epidural
20 mcg- spinal
Diamorphine in neuraxial anesthetics
- 5 mg - epidural
- 25 mg - spinal
Epinephrine in neuraxial anesthesia
0.5 mg - spinal
5mcg/mL - epidural
Test dose for epidural
Lidocaine (1.5%) and Epinephrine (1:200,000)
3cc
therefore, 45mg Lidocaine and 15mcg of Epi
alkalinization of local anesthetic solutions
raises the pH closer to the pKa of the local anesthetic, thereby increasing the proportion in the non-ionized form
- able to cross cell membranes
- speed onset
Which neuraxial procedure has a greater chance of hypotension?
epidural
more sympathetic response
PMPH or PDPH
postmeningeal puncture headache
Effects of spinal blocks
relaxes sphincters therefore higher chance of aspiration
urinary retention
Treatment for PDPH
hydration, caffeine, analgesics, blood patch
Risk factors for PDPH
- younger patients
- large needles
- several attempts
Transient Neurologic Symptoms (TNS)
pain in the butt and thighs after neuraxial anesthesia
- using lidocaine with smaller needles
- lasts 3-5 days
Onset and duration of Lidocaine for Epidural Anesthesia
onset: moderate
duration: intermediate
Onset and duration of Bupivacaine for Epidural Anesthesia
onset: slow
duration: long
Onset and duration of Ropivacaine for Epidural Anesthesia
onset: slow
duration: long
Onset and duration of 2-chloroprocaine for Epidural Anesthesia
onset: fast
duration: short
Onset and duration of Tetracaine for Epidural Anesthesia
onset: slow
duration: long
epidural and spinal dose of Morphine
epidural: 2.5 - 5 mg
spinal: 0.1-0.2 mg
Cerclage
suture placed around the cervical os to prevent pregnancy loss because of an incompetent cervix
external cephalic version
turn baby in uterus so it is not in breach
- need to have C-section ready
- may want to place epidural beforehand
Stages of Labor
- onset or regular contractions
- level of anesthesia: T10-L1
- complete dilation to delivery
- lower lumbar and sacral fibers
- delivery of placenta
most common local anesthetic for C-sections
Bupicavaine
VBAC
vaginal birth after cesarean
- increased risk of uterine rupture
Signs and Symptoms of Transient Neurologic Syndrome (TNS)
pain in the lower back and buttocks
Treatment for TNS
- NSAIDS
- opioids
- heat
- muscle relaxants
- leg elevation
Signs and Symptoms of Cauda Equina Syndrome
- pain in lower back with variable motor and sensory deficits
- radicular pain
- sensory loss
- bladder and bowel dysfunction
Treatment of Cauda Equina Syndrome
corticosteroids
Signs and Symptoms of Traverse Myelitis
pain in low back with motor weakness and sensory alterations
- allodynia
- bladder and bowel dysfunction
Treatment of Traverse myelitis
corticosteroids
- physiotherapy
- exercise
Signs and Symptoms of Anterior Spinal Artery Syndrome
painless loss of motor and sensory function
Treatment for Anterior Spinal Artery Syndrome
correcting of hypotension and vasospasm
- exercise
Signs and Symptoms of Arachnoiditis
pain in low back with variable motor and sensory deficits
- unilateral pain that increases with activity
Treatment of Arachnoiditis
- physiotherapy
- steroid injections
- electrical stimulation
Signs and Symptoms of Epidural Hematoma
pain or pressure in low back with progressive motor or sensory blockade
Treatment for epidural hematoma
surgical compression
Signs and Symptoms of Epidural Abscess
tender pain in low back that is accompanied by sensory and motor deficits and fever
Treatment of Epidural Abscess
- antibiotics
- percutaneous drainage
- laminotomy with washout
- laminectomy
What 3 medications can increase uterine tone?
oxytocin, methlyergonovine, prostaglandin
gravid hysterectomy
hysterectomy after birth
What is wrong with giving magnesium to pre-eclampsia patients?
causes uterine atony
(muscle relaxant)
Antenatal hemorrhage
bleediuring during 24+ weeks of pregnancy
- commonly caused by placental abruption or placenta previa
Why do pregnant women appear anemic?
high increase in plasma, so dilutionally they have lower hemoglobin
(10 is normal, 8 is low)
Why do you not give 100% O2 with Bleomycin?
may cause pulmonary fibrosis
Adriamycin
treats endometrial carcinoma and ovarian cancer
- may cause myocardial fibrosis and CHF
cis-Platinum
treatment for cervical cancer
- may cause renal tubular dysfunction