Flashcards in Review from TEST 1 Deck (50)
Iron deficiency anemia is classified as ________.
microcytic hypochromic (anemia characterized by small red blood cells; pale and relatively colorless)
The initial phase of hemostasis is __________.
formation of the platelet plug (hemostasis= process in which to stop bleeding....blood vessels actually vasoconstrict first.... but for the test, the initial step is platelet plug)
As with all surgeries, gastric bypass has complications associated with the procedure. The most common cause for reoperation after gastric bypass is ________.
Mallory-Weis tear at the GE junction is closely associated with chronic alcohol abuse. The most common signs/symptoms are ________.
upper abdominal pain and bloody vomitus
(T/F?) Large, negatively charged molecules have a more difficult time penetrating glomerular barriers to enter the ultrafiltrate.
All of the following statements are true regarding hepatic physiology EXCEPT:
A: liver receives 40% of total CO
B: 25% of total flow is supplied by hepatic artery
C: the portal vein has partially deoxygenated blood and contains nutrient/compounds absorbed from gut
D: portal vein supplies 75% of total flow to the liver
A: The liver receives 40% of the CO
FACTS= normal hepatic blood flow is 25-30% of CO and is provided by hepatic artery and portal vein.... hepatic artery supplies about 45-50% and portal vein the other 50-55%; ALL coagulation factors with the exception of factor VIII and vWF are produced by the liver; Vit K is necessary for synthesis of prothrombin (factor II), and factors VII, IX, X; albumin
Adriamycin is a chemotherapeutic agent commonly known to cause impaired cardiac contractility. This type of cardiac dysfunction is referred to as _______.
Decreasing afferent tone (dilation of the afferent renal artery) will have the following effects... Choose ALL THAT APPLY:
correct answers: increasing GFR, increasing glomerular blood flow
You are evaluating a patient preoperatively for a laparoscopic cholecystectomy. You note a recent ABG measurement in the chart... results are pH 7.37, PCO2 57, PO2 65, HCO3 34, Hgb 18, SPO2 93%. The patient has a long history of smoking and is in no distress. The patient has no chronic renal disease. This patient can be classified as having a _________.
totally compensated chronic respiratory acidosis
The blood bank product which contains the most fibrinogen is _______.
cryoprecipitate (FFP are spun and the precipitate is collected... vWF, fibrinogen, VIII)
Hyperkalemia potentiates neuromuscular blockade by decreasing the excitability of the skeletal muscle cells. (T/F)?
Zenker's diverticulum is a contraindication to TEE insertion. (T/F)
Facts: aka pharyngeal pouch....it is a diverticulum of the mucosa of the pharynx, just above the cricopharyngeal muscle--upper sphincter of esophagus--In simple words, when there is excessive pressure within the lower pharynx, the weakest portion of the pharyngeal wall balloons out, forming a diverticulum which may reach several centimetres in diameter.
Blood flow TO the glomerulus is provided via the _______ renal artery. The resting tone of this vessel is primarily regulated by _________.
prostaglandins: variety of strong physiological effects, such as regulating the contraction and relaxation of smooth muscle tissue. Prostaglandins are not endocrine hormones, but autocrine or paracrine, which are locally acting messenger molecules. They differ from hormones in that they are not produced at a discrete site but in many places throughout the human body. Also, their target cells are present in the immediate vicinity of the site of their secretion (of which there are many).
Your patient has been febrile for the past 24 hours. No maintenance fluids have been infusing for the past 12 hours. You would expect your patient to be __________ with a _________ sodium level.
hypovolemic; increased (kidneys conserve Na during states of volume depletion)
Which of the following is a benefit of utilizing normovolemic hemodilution as a blood conservation technique? ALL OF THE ABOVE ARE BENEFITS
ALL OF THE ABOVE: decreased total loss of oxygen carrying capacity (Hgb) per mL of surgical blood loss, maintaining normal oxygen delivery by maintaining overall fluid volume status and hemoglobin WNL, ability to transfuse autologous blood as needed
Increased _________ increases gut absorption of calcium, while _________ stimulates bone formation, decreasing plasma calcium levels.
calcitriol (hormonally active vitamin D)
calcitonin (hormone produced by parafollicular cells of the thyroid.... reduces blood calcium, opposing effects of PTH.... stimulated by increase in serum calcium)
Increased sympathetic nervous system stimulation initiates renin secretion. Renin begins the process of ________ more sodium from the renal tubule.
retaining (renin just LOVES salt)
Which of the following commonly used opiate or opioid medications have active metabolites which may prolong respiratory depression in the patient with renal failure?
demerol & morphine
T/F?? Proteins secreted into the ultrafiltrate can be easily reabsorbed completely intact across the tubular membranes.
The cause of the restrictive ventilatory defect in obese patients is ___________.
BOTH A&B: additional weight on the thoracic cage, additional abdominal fat/weight impairing diaphragmatic excursion
Patients who live at altitude (Denver, CO or Himalayan mtns) are often found to be polycythemic. This polycythemia is created by increased levels of erythropoietin as a result of lower atmospheric pressure.
FALSE (should be TRUE but answer was false)
polycythemia: disease state in which the proportion of blood volume that is occupied by red blood cells increases
Altitude related - This physiologic polycythemia is a normal adaptation to living at high altitudes. Many athletes train at high altitude to take advantage of this effect — a legal form of blood doping. Some individuals believe athletes with primary polycythemia may have a competitive advantage due to greater stamina. However, this has yet to be proven due to the multifaceted complications associated with this condition.
Secondary polycythemia is caused by either natural or artificial increases in the production of erythropoietin, hence an increased production of erythrocytes
l-arginine vasopressin is secreted by the _______.
posterior neural hypophysis (posterior pituitary)
posterior pituitary secretes oxytocin and vasopressin
Anti-parasympathetic medications may cause ______.
These are anticholinergics!!! (atropine, glyco); increased body temp, increased HR, urinary retention
You are performing a preoperative assessment on a patient with Hemophilia A. You know Hemophilia A is an abnormality of which clotting factor?
factor VIII (because VIII 8 A.... haha)
Hemophilia A is a genetic deficiency in clotting factor VIII, which causes increased bleeding and usually affects males. Usually (approximately 70%) it is inherited as an X-linked recessive trait
The final stage in the pathogenesis of chronic renal failure is _____________.
Glomerulosclerosis refers to a hardening of the glomerulus in the kidney. It is a general term to describe scarring of the kidneys' tiny blood vessels, the glomeruli, the functional units in the kidney that filter urine from the blood. Proteinuria (large amounts of protein in urine) is one of the signs of glomerulosclerosis. Scarring disturbs the filtering process of the kidneys and allows protein to leak from the blood into urine. However, glomerulosclerosis is one of many causes of proteinuria. A kidney biopsy (removal of tiny part of kidney with a needle) may be necessary to determine whether a patient has glomerulosclerosis or another kidney problem. About 15 percent of people with proteinuria turn out to have glomerulosclerosis.
The kidneys are primarily responsible for regulating free water concentration in the body. (T/F?)
Facts: blood flow through the kidneys accounts for about 20-25% of the total CO; autoregulation of RBF between 80-180mmHg
You are evaluating a patient in preoperative holding. The patient's BUN is 18 and the creatinine is 3.6. This patient has azotemia because the patient is clearly in chronic renal failure. (T/F??)
MUST have increase in BUN and CREAT
azotemia: is a medical condition characterized by abnormally high levels of nitrogen-containing compounds (such as urea, creatinine, various body waste compounds, and other nitrogen-rich compounds) in the blood. It is largely related to insufficient filtering of blood by the kidneys. It can lead to uremia if not controlled.
The only test available to evaluate all properties of clot formation & strength is the _________.
Enzyme immunoassays are the most sensitive & specific tests to confirm heparin-induced thrombocytopenia, but not the most rapid. (T/F?)
ELISA 1st .... then a functional assay (takes longer)