Past papers (rowad book) Flashcards
anti inflammatory cytokines
IL-10, IL-4, TGF-beta, IL-13
high levels of carbamino compounds is associated with a … shift in the o2-hb dissociation curve
right
hypovolemic initial physiological response is
increase in catecholamines
why does blood transfusion cause left shift in o2-hb curve
decrease 2-3 DPG
why does sickle cell anemia causes a left shift in o2-hb curve
HbF
IL-1 is primarily produced by
macrophages
factors that can affect the accuracy of pulse oximetry
1.nail polish
2. methemoglobinemia
3. dark skin
4.carboxyhemoglobin
5.Ambient light (eg surgical lights)
6. very low O2 sat levels
only type of shock that has an increased Cardiac output
Distributive
ETCO2 in PE is
decreased
antidote for beta blocker overdose
glucagon (through increasing cAMP independent of beta adrenergic receptors)
pulse pressure is only increased in what type of shock
distributive
MCC of neurogenic shock
spinal cord injuries
Sepsis criteria
SIRS+ source of infection
severe Sepsis criteria
Sepsis+
Lactic acidosis, SBP <90 or SBP drop ≥40 mm Hg of norma
Septic shock
Severe sepsis + hypotension not responding to fluid
The most common sources of infection in septic shock
pneumonia
UTI
above what level does spinal cord injury lead to neurogenic shock
Above T6
electrolyte abnormalities following massive blood transfusion
Hypocalcemia (MC)
Hyperkalemia
Hypomagnesemia
Most common blood product associated with TRALI
FFP
Most common blood product associated with allergic reaction
FFP
(reaction to donor antigens in plasma)
Cryoprecipitate stored at what temperature
below -18C
platelets stored at what temperature
22-24C
PRBCs stored at what temperature
2-10C
FFP stored at what temperature
below -30C
In anesthetized patients, transfusion reactions may present as
Diffuse bleeding
Most efficient and common method to decrease incidence of Febrile nonhemolytic transfusion reaction
filtration of blood products
blood product with the highest transfusion-transmitted infectious risk
platelets
what acid-base disorder occurs following massive blood transfusion
Metabolic alkalosis due to conversion of citrate to HCO3
Prothrombin complex concentrate contains
factor 1972
lectin complement pathway is activated by
This pathway is initiated by the binding of mannose-binding lectin (MBL), collectin 11, and ficolins to microbial surface oligosaccharides and acetylated residues, respectively.
keloid on histopathology
chronic inflammation, marked angiogenesis and a large amount of collagen
ischial pressure ulcers is common in
paraplegic patients using wheelchair
Most common areas for keloid formation
ear lobe, deltoid, parasternal and upper back
firm discrete nodule at the site of previous surgery
granuloma
alginate dressing main function in wounds
absorb exudate and form gel like barrier
most powerful chemotactic factor for fibroblasts
PDGF
the greater the angle of z-plasty the greater the … of scar
Length
everted edge ulcer is seen in
squamous cell CA
punched out edge ulcer is seen in
syphilis, Diabetic ulcer
undermined ulcer edge is seen in
Tb, bed sore
bone reaches maximal tensile strength after
6 months
the two most important cells in wound healing
macrophages and fibroblasts
the MC pathogen associated with cat bites
pasteurella multocida
MC organism associated with central line infections
coagulase negative staph (staph epidermis)
exotoxin are
peptides
exotoxin are produced mainly by
gram positive
antibiotic of choice for actinomyces
Penicillin G
MC organism cellulitis
beta hemolytic streptococcus
c. tetani is
gram positive spore forming rod
polyGlactin
Vicryl
polyDioxanone
PDS
polyGlycaprone
Monocryl
the easiest suture to knot
silk
the highest tissue reaction of all absorbable sutures
Catgut
current type used in bipolar and monopolar devices
AC (alternating current)
The most common vessel to be injured during laparoscopic procedure
Right common iliac artery
Tumor marker for GIST
CD117 (c-KIT)
cell cycle phases
G1 (normal cell activity)
S (DNA synthesis)
G2 (prepare mitosis)
M (Mitosis)
Atypia is reversible or not
it is reversible if underlying cause is addressed
alcohol based preparations are not effective againt
c.diff
preoperative assessment should be done … weeks before surgery
2-4 weeks
recommended time of holding for ACR ARB and diuretics before surgery
stop day before surgery
recommended time of holding OCPs before surgery
stop 4 weeks before surgery
halothane hepatitis clinical picture
fever, eosinophilia, jaundice and elevated LFT
which inhalational agent can cause seizure
enflurane
propofol is contraindicated in
patients with egg allergy
pregnancy
parkinson
Etomidate is mostly used in
rapid sequence induction
s/e of etomidate
adrenocortical insufficiency and metabolic acidosis
what are early symptoms of local anesthesia toxicity
CNS syx
restlessness, agitation and tinnitus
malignant hyperthermia is associated with what type of muscle relaxants
depolarising (succinylcholine)
reversal agents for non-depolarizing muscle relaxtants
neostigmine, edrophonium and sugammadex
pethidine is no longer present in the stepladder approach for pain management of malignant disease
True
umbilicus sensory nerve dermatome at which level
T10
which amino acid is used for catecholamines synthesis
Tyrosine
how to prevent refeeding syndrome
Calorie
delivery should be increased slowly and vitamins administered
regularly
Thiamine should be given before feeding
The largest volume of fluid absorption occurs in which part of the GI tract
Small bowel
Trace element deficiency associated with glucose intolerance and peripheral neuropathy
chromium deficiency
wound dehiscence percentage occurance in abdominal wounds
around 3%
wound dehiscence most commonly occur at post op day
5 to 8 POD
MCC of wound dehiscence
SSI