Veterinary Medicine - Emergency Care Flashcards
Shock Syndrome - What are the the 3 elements of the perfusion triangle?
Heart, Blood Vessels , Intra-vascular fluids/Blood
Shock Syndrome - DDs for Distributive Shock
Sepsis / SIRS, Obstruction (e.g. Thrombosis / GDV / Tamponade), Anaphylaxis, Neurogenic
Shock Syndrome - DDs for Hypovolemic Shock
Blood Loss (e.g. Coagulopathies / Trauma), Fluid Loss (Dehydration / Burns / Vomiting / Diarrhea / Polyuria ), 3rd Space losses (Peritoneal / Pleural / Pericardial Effusions)
Shock Syndrome - DDs for Cardiogenic Shock
Structural Cardiac Disease (e.g. MR, DCM, HCM) Arrhythmias Tamponade
Shock Syndrome - What does it mean physiologically when an animals is in a state of Compensated Shock?
Through compensatory mechanisms (i.e. Catecholamines / RAAS / Baro/Chemoreceptors) the body is still able to maintain BP and perfusion
Shock Syndrome - Compensated Shock - Clinical signs
Slightly Depressed, Tachypnea, Tachycardia , Cool extremities, Normal / Prolonged CRT, Normal Mucus Membranes, Normal BP, Normal Pulse Quality
Shock Syndrome - Decompensated Shock - Clinical Signs
Depression, Tachypnea, Tachycardia, Hypothermia, Low BP, Pale Mucus Membranes, Prolonged CRT, Weak Peripheral Pulse
Shock Syndrome - Septic shock responds well to fluid therapy (T/F)
False
Septic Shock / SIRS - Hyperdynamic Phase - Clinical signs
Tachycardia, Tachypnea, Fever, Bounding Peripheral Pulse , Hyperemic Mucus Membranes
Septic Shock / SIRS - Hypodynamic Phase - Clinical signs
Tachycardia, Tachypnea, Hypothermia, Pale Mucus Membranes, Weak Pulse, Cold Extremities, Prolonged CRT
Shock Syndrome - What organ is damaged first in dogs and what would be the clinical signs?
GI Tract. Vomiting / Diarrhea / Ileus / Melena / Hematochezia
Shock Syndrome - What is the main difference in clinical signs between Dogs and Cats?
Cats undergoing Decompensated/Hypodynamic shock can present with both Bradycardia as well as Tachycardia
Shock Syndrome - What is the first organ to be damaged in Cats?
Lungs
Shock Syndrome - What are the basic blood test we need to preform in a Shock Patient?
PCV/TS, Creatinine, Albumin, Glucose, Lactate
Shock Syndrome - After the patient has stabilized - What are additional diagnostics you can perform for finding the cause and additional monitoring?
X-Rays, Ultrasound, Echocardiography, Blood Gas, EKG, Pulse Oximetry
Shock Syndrome - What is the recommended fluid therapy model?
LRS / Saline. 20 ml/kg Boluses and reassess (e.g. improvement in heart rate, respiratory rate, pulse quality, BP)
Shock Syndrome - Regular fluid therapy failed. What are our 2nd line options in terms of fluids?
Hyperosmotic Saline, Colloids (i.e. Hetastartch), Blood Products (i.e. Plasma)
Shock Syndrome - Regular fluid therapy failed. What drugs are used for fluid-refractory shock? What are the main types of shock that are refractory to fluid therapy?
Vasoconstrictors (e.g. Norepinephrine, Vasopressin, Dopamine), Dobutamine (Positive Inotrope), Distributive Shock (e.g. Septic Shock, SIRS). *Cardiogenic Shock - Fluids are Contraindicated!
Shock Syndrome - What is the approach for treating the GI in shock patients? What drugs are indicated?
Treat with GI protectants, PPI (e.g. Omeprazole), H2 Receptor antagonists (e.g. Famotidine), Sucralfate
Cardiogenic Shock - What can help you determine that you are dealing with a Cardiogenic Shock?
Signalment (e.g. MR - small breed, middle age-old dogs, DCM - Doberman Pinscher), History (e.g. Chronic cough), Clinical signs & PE findings (e.g. Murmur, Cyanosis, Crackles), Diagnostics: T-Fast (e.g. B-Lines, High LA:Aorta ratio), NT-ProBNP, Echocardiography
Cardiogenic Shock - Basic Treatment
Sedation (e.g. Butorphanol), Oxygen, Diuretics (e.g. Furosemide / Spironolactone), Positive inotropes (e.g. Pimobendan, Dobutamine), Anti-arrhythmogenic treatment (if indicated)
Shock Syndrome - Treatment End-Goals
Normal Temp, Normal Mucus Membrane + CRT, HR - 70-120, Normal RR
Relative Adrenal Insufficiency - What does this theory mean for in regards to shock syndrome treatment?
When an animal is refractory to vasopressors - Give basal blood concentration of Glucocorticoid - Catecholamines need a certain amount of cortisol in the blood in order to work
Hypercalcemia - Treatment
Fluid diuresis, Steroids, Furosemide, Bisphosphonate, Calcitonin
Xylitol Poisoning - Common panel findings
Hypoglycemia, Hypokalemia, Elevated liver enzymes
Xylitol Poisoning - Pathogenesis
Induces hyper-secretion of Insulin => Hypoglycemia & Hypokalemia
Emesis-induction in Poisoning - Name our options & Which are for dogs and which are for cats
Apomorphine - Dogs, Xylazine (Rompun) / Medetomidine -Cats, 3% Hydrogen Peroxide - Dogs
Common side effect of activated charcoal seen in Biochemistry panel
Hypernatremia (highly osmolar substance)
Poisoning decontamination methods - Name them all (By order)
Emesis - Apomorphine / Rompun / Hydrogen Peroxide, Gastric Lavage, Activated Charcoal, Cholestyramine , Surgery
Pyrethroids Poisoning - What is the only concentration that is allowed to be used on cats?
0.1% Pyrethroid
Pyrethroids Poisoning - What is the system affected? What are the clinical signs?
Nerves System. Hyperesthesia, Tremors (Face / Ears / Body), Seizures, Hyperthermia
Pyrethroids Poisoning - Treatment of choice (Plus additional one that helps in refractory cases)
Methocarbamol . *Diazepam - Helps reduce hyperesthesia and is synergistic with Methocarbamol
Acetaminophen Toxicosis - 2 Common effects on red blood cells (One can be seen on CBC & Blood smear)
Methemoglobinemia, Heinz Bodies Anemia
Acetaminophen Toxicosis - Main organ affected
Liver
Acetaminophen Toxicosis - Main pathologic effect seen in Cats? Dogs?
Cats - Methemoglobinemia Dogs - Liver failure
Acetaminophen Toxicosis - Common clinical signs in Cats
Facial / Paw Edema, Brown Mucus Membranes
Acetaminophen Toxicosis - Methylene Blue is recommended in Cat Treatment (T/F)
False! Hard to titrate to appropriate dose and can worsen methemoglobinemia if not done correctly
PCV / TS - Which drops first in acute hemorrhage?
TS. (Reserve RBCs can be supplied by the spleen)
Transfusion Reaction - Treatment Options
Stop the Transfusion, Diphenhydramine, Steroids
AFAST/TFAST/Global FAST - Heart short axis view visualizes..?
Right Ventricle, Left Ventricle
AFAST/TFAST/Global FAST - Heart long axis view visualizes..?
Right Ventricle, Right Atrium, Left Ventricle, Left Atrium
AFAST/TFAST/Global FAST - Gallbladder/Vena Cava - Flat Vena Cava signifies?
Anaphylaxis
AFAST/TFAST/Global FAST - Gallbladder/Vena Cava - Fat Vena Cava and demonstrable Hepatic veins can signify?
Right sided heart disease, Pulmonary hypertension, Pericardial Effusion / Cardiac tamponade, Caudal Vena cava obstruction
AFAST/TFAST/Global FAST - Pulmonary edema is signified by
B-Lines
AFAST/TFAST/Global FAST - Ribs are are signified by
Acoustic Shadows
AFAST/TFAST/Global FAST - Dry lung signified by
A-Lines, Glide sign
AFAST/TFAST/Global FAST - Pulmonary “Wedge sign” signifies?
Distal PTE
AFAST/TFAST/Global FAST - Gallbladder Edema (“Halo Sign”) - DDs
Anaphylaxis, R-CHF, Pericardial Effusion / Tamponade
AFAST/TFAST/Global FAST - Anaphylaxis findings (3)
Low volume of fluids in the heart, Flat Vena Cava, Gallbladder with “Halo Sign”
AFAST/TFAST/Global FAST - Pericardial effusion findings (3)
DH View - Fluids in the pericardial sac, Fat Vena Cava, Gallbladder with “Halo Sign”
AFAST/TFAST/Global FAST - R-CHF Signs (4)
Enlarged right ventricle (Short/Long axis view), Fat Vena Cava, Gallbladder with “Halo Sign”, +/- Peritoneal Effusion (Modified Transudate)
AFAST/TFAST/Global FAST - What is the algorithm for ruling out and ruling in Pneumothorax
1) Is there a Glide sign? => Yes = Rule out. 2) Are there B-Lines? => Yes = Rule out. Both 1) and 2) Negative? => Pneumothorax can only be suspected. 3) Is there a “Lung Point”? => Yes = Pneumothorax Confirmed
AFAST/TFAST/Global FAST - What is the “Curtain Sign” and what does it signify?
The transition between the lung region and the Diaphragm / Liver. You’ve gone caudally as much as you can
AFAST/TFAST/Global FAST - Where do B-Lines originate from? What does it mean if a specific location has B-Lines in terms of ruling in/out Pneumothorax?
Visceral Pleura (Fluids within). Pneumothorax ruled out at that location
AFAST/TFAST/Global FAST - What are the 2 best sites to evaluate presence of Pleural effusion? and in what position?
1) Sub-xiphoid site. 2) Caudal to the heart. Sternal position (Fluid is gravity dependent)
AFAST/TFAST/Global FAST - At a single point - How many B-Lines are abnormal? What do they signify when abnormal?
> 2 or 3. Alveolar / Interstitial Syndrome (Fluid-filed lungs)
AFAST/TFAST/Global FAST - You found >2-3 B-lines in several thoracic sites. Common DDs?
Cardiogenic / Non -Cardiogenic Edema, Lung contusion, Aspiration pneumonia
Accelerated Idioventricular Rhythm - Management / Treatment
If not multi-focal: Check and correct Electrolytes | Oxygen | BP | Pain . If multi-focal: Administer Lidocaine
Feline Blood Transfusion - What breed is100% A-Type blood always?
Siamese
Feline Blood Transfusion - What breed has an unusual proportion of AB blood type
Ragdoll
Feline Blood Transfusion - Neonatal Isoerythrolysis - Common Blood Types of Kittens and Queen?
Kittens - A or AB. Queen - B (Colostrum has anti-A Antibodies)
Feline Blood Transfusion - Common presentation / clinical signs of kittens with Neonatal Isoerythrolysis
Sudden death, Pigmenturia, Icterus
Feline Blood Transfusion - Acute reaction to blood transfusion - What are the common clinical signs?
Anaphylaxis, Urticaria, Vomiting, Tachypnea, Tachycardia / Bradycardia, Collapse
Methocarbamol - Indication
To control uncontrolled muscle tremors as a result of a toxic agent (i.e. Methyl aldehyde / Pyrethroids )
What are 2 common Vasopressors used in an emergency setting / anesthesia complications?
Dopamine, Norepinephrine
What is the Vasopressor recommended for CPR? When should it be administered during CPR?
Epinephrine. Every other cycle of resuscitation (4-5 minutes)
CPR - What are the shockable rhythms? What is the treatment algorithm?
Pulseless V-Tach / V-Fib. 1) Defibrillate 2) Give Lidocaine / Amiodarone 3) Epinephrine 4) Defibrillate again
CPR - What are the non-shockable rhythms? What is the treatment algorithm?
Pulseless electrical activity / Asystole. 1) Low dose Epinephrine + Atropine 2) High Dose Epinephrine
CPR - What are the 2 most important monitoring devices during CPR?
ECG, Capnograph
First steps for every emergency patient - What do you check first? Elaborate on each step
Airway - Oropharyngeal Elexam. Breathing - Examine breathing pattern, Auscultate the lung field. Circulation - Auscultate heart | Palpate pulse | Check CRT | Evaluate mucus membranes
Where do you perform Abdominocentesis (No US available)
Around the umbilicus
Where do you perform Thoracentesis (No US available)
Intercostal spaces 6-10 in the cranial aspect of the rib: -Dorsally: when Pneumothorax is suspected. -Ventrally: when Pleural effusion is suspected
What is “Hypotensive Resuscitation” and when do we use It? What is the end goal?
When we have a Hypotensive animal that is also losing blood and we want to elevate BP and increase perfusion to the tissues but don’t want to exacerbate bleeding via increasing intravascular hydrostatic pressure and prevent advantageous thrombus formation. End Goal - SAP = 70-90mmhg / MAP = 60mmhg
What is the “Secondary survey” in a critical patient and when is it performed?
Full physical examination from nose to tail to look for lesions / injuries. Only after evaluating & stabilizing the patient (according to ABC)
Chylothorax in Felines - Sequela
Fibrosing Pleuritis
Chylothorax in Felines - Diagnosis
Thoracentesis findings: Milky white substance with high TS, High Triglycerides, Abundant in Lymphocytes
Chylothorax in Felines - Treatment
Medical: Rutin (increases lymphatic vessel uptake of edema fluid, reduces inflammation and fibrosis that accompanies chylothorax). Surgical: Subphrenic Pericardiectomy, Thoracic Duct ligation, Cisterna Ablation. *Preferably a combination of 2 or more of the above procedure. Other surgical procedures: Pleural port Omentum placement in the thorax
Chylothorax - How can you improve visualization of the thoracic duct for an upcoming surgery? (3 Options)
High-fat meal before procedure. Inject Methylene Blue into the Cisterna Chyli. Inject Methylene Blue into the Popliteal lymph node
Sepsis - Common causes
Peritonitis, Pyometra, Pyothorax, Pancreatitis, Prostatitis, Pneumonia, Parvo enteritis , Wound infection
Sepsis - Common CBC changes
Anemia, Neutrophilia / Neutropenia, Thrombocytopenia
When does the Total Solids (“TS”) start to drop in acute hemorrhage? How long does it take to reach its lowest point?
Immediately . ~12h - 24h
When does the PCV start to drop in acute hemorrhage? How long does it take to reach its lowest point?
12h-24h. 48-72h
After treatment and resolution of acute hemorrhage - how long des it take for the TS levels to normalize?
5-7 Days
After treatment and resolution of acute hemorrhage - how long des it take for the PCV levels to normalize?
2-4 Weeks
Decreased lung sounds - 4 DDs
Dorsal - Pneumothorax. Ventral - Pleural Effusion. Neoplasia. Diaphragmatic Hernia
What’s the Difference between Hyperthermia and Fever?
Fever - Change in hypothalamic temp set point. Hyperthermia - Elevation of core temp
What 3 Elements Define Heat Stroke?
1) Hyperthermia 2) CNS Signs 3) Multiple Organ Dysfunction Syndrome (MODS)
Heat stroke - common presentation and clinical signs
Stupor / Seizures / Coma, Hyperthermia, Tachycardia / Arrhythmia, Tachypnea / Panting, Weak Pulse, Hypotension / Hyperemic MM , Petechiae / Ecchymoses, Pigmenturia , Vomiting / Diarrhea +/- Melena / Hematochezia, Oliguria / Anuria, Ventricular Arrhythmias, Pulmonary Edema
Heat Stroke - Treatment
Cooling - Room Temp Water + Fan. Fluids + Electrolyte +/- Vasopressors if Remains Hypotensive. Plasma. O2. GI Protectants + Anti-Emetics. AB (If GI Bleeding -> Translocation Possible). Phenobarbital +/- Mannitol / Hypertonic Saline (Seizures). Lidocaine (V-Tech). AKI - Treatment and Monitoring of Urine Output +/- Dialysis
Heat Stroke - Common Lab Findings
Neutrophilia/Neutropenia, Lymphocytosis (nRBC), Erythrocytosis or Anemia (Bleeding), Thrombocytopenia (Consumption), Hypoproteinemia (GI Bleeding), High ALT / High AST / High CK, Hyperbilirubinemia , Electrolyte Changes, Azotemia , Hypoglycemia (Sepsis), Myoglobinuria, Proteinuria, Glucosuria, High PT/aPTT
Common blood smear finding in intra vascular hemolysis
Ghost Cells
Blood smear - you get an abnormal high WBC count composed mainly of lymphocytes. What is a possible DD that is not WBC related that can cause this Increase?
Nucleated RBCs
What are the steps of analyzing EKG
1) Find a normal QRS complex *No Normal QRSs - Evaluate the QRSs available 2) Bradycardia / Normal / Tachycardia 3) Regular / Irregular (-> Regularly-Irregular / Irregularly-Irregular) 4) All Ps have QRSs? All QRSs have Ps?
Ventricular bigeminy - usually associated with what 2 types of diseases?
Hyperthyroidism, Structural diseases of the heart (HCM / RCM / Rarely DCM)
Serotonin Syndrome - Common Clinical Signs
Agitation + CNS Signs, Hyperreflexia, Hyperthermia, Tachycardia, Tachypnea, Hypertension, Muscle Fasciculations / Tremors, Mydriasis, Diarrhea
Serotonin Syndrome - Treatment
Cooling, Assisted emesis, Activated charcoal, Cyproheptadine, Acepromazine (for hypertension / Anti-serotonergic), +/- Benzodiazepine, +/- Beta Blockers