Block 3 More Flashcards
How do you treat metabolic shock/
Dextrose
How do you treat anemic shock?
Red blood cell transfusion
What is an additional concern with GI of shock?
Sepsis
Bacteria can enter bloodstream through GI
How does sepsis from shock initially present?
Bloody diarrhea
What are the 3 components of the feline lethal triad of shock?
Hypothermia
Hypotension
Bradycardia
What is a downside to warming you patient?
Warmth makes vasodilation worse
Should you give steroids to shock patients?
NO!
How do you not want to administer fluids in a patient that is likely actively bleeding?
Bolus
What is a drug that has major cardiovascular effects during analgesia?
Dex, dont use dex
What does the doxy for treating HW attack?
Wolbachia
What is wolbachia?
Endo-symbiotic bacteria inside HW
What should you consider when treating HW with melarsomine?
Sedation and analgesia
What is really important to do during the treatment protocol at home?
Exercise restriction
What are the 4 things beginning at day 0 of diagnosis of HW?
Exercise restriction
Prednisone if symptomatic
HW preventative
Day 0-28 of doxy
When is first melarsamine injection give?
Day 61
When are 2nd and 3rd melarsamine injections given
90 and 91
What is the susceptibility gap?
Period when juveniles are present that are not killed by preventative nor melarsomine
How do you fix the susceptibility gap?
2 month lag
Allows juveniles to become adults
What is contraindicated in cats with HW?
Adultacide therapy
What can be given with HW that are severe and symptomatic?
Sildenafil as pulmonary vasodilator
What is caval syndrome
Large worm burden causing retrograde movement of worms into tricuspid valve orifice
What can caval syndrome cause?
Right CHF
What is often seen with caval syndrome?
Hemoglobinuria
With caval syndrome, you will likely need to do surgery, mortality is still 40% and need to go through melamine protocol
What is the slow kill method for HW?
Administer macrocyclic lactones and doxy only
How long does slow kill method take?
> 2 years for 95% to die
When can you consider slow kill method?
Anaphylaxis to melarsomine, older patient that can’t go through procedure
“You must test for HW prior to prescribing HWP because giving HWP to an infected dog could be dangerous”
The potential danger depends on the microfilaria load and the type of preventative used
What are the 2 reasons for dogs on preventatives still getting infected?
Susceptibility gap
Macrocyclic lactone lack of efficiency
Owner compliance
Resistant strains
Where are most of the resistant strains?
Mississippi River Valley
What is the ML-resistance strain called?
MP3 (Miss Piggy)
What is Cheyne-Stoker respiration?
Occurs with heart failure and end of life
Biot’s respiration?
Sequence of gasps, apnea, and several deep gasps
Trauma, stroke, opioids
Kussmaul’s Respiration?
Regular deep respirations without pause
Metabolic acidosis
Apneustic respiration?
Holding an inspired breath at the end of inhalation for a short period before exhaling
Brain trauma and ketamine
What is number for failure to ventilate?
PaCO2 > 60
What is number for failure to oxygenate?
PaO2 <60
First step in treating failure to oxygenate?
Supplemental oxygen
What is the rule of thumb to prevent oxygen toxicity?
Maintain PaO2<250mmHg
Generaly is FiO2<0.5
What is objective of PEEP?
Recruit all lung units to stay open
PEEP helps keep lung lobes oxygenating
What does positive pressure require?
Intubation
What does positive pressure decrease?
FRC (area of lung left after a deep breath)
What are ascending bellows?
Bellow ascends during exhalation phase
What type of ventilator is an anesthesia ventilator?
Descending
Does descending ventilator have PEEP?
No
What are the 3 types of ventilator types?
Controlled (machine does all work)
Assisted (patient triggers)
Assist/Controlled (combination of both)
What is the I:E ration?
Time spent on respiratory cycle
Inhaled = 1 sec
Exhale = 2 sec
1:2 is normal
What are the 4 types of ventilator induced lung injury?
Barotrauma
Volutrauma
Atelectrauma
Biotrauma
What is barotrauma?
Regional lung distention due to increased pressure in SOME areas of the lung
What is volutrauma?
Over distention associated with high peak airway pressure. Lung stretch causing diffuse alveolar damage
What is atelectrauma?
Ventilation at low volumes related to opening and closing of lung units
What is biotrauma?
Inflammatory injury due to any of the previous 3
What does capnogrpahy look like with hypoventilation?
Increased plateaus
What does capnogrpahy look like with hyperventilation??
Decreased plateaus
What does capnogrpahy look like with cardiac arrest?
waves going down
Notches occur in spontaneous breathing during PPV
Cardiogenic oscillations are common causing decreasing wave in small steps
What does partial obstruction look like?
Prolonged slope with fall at end