Pass the CCRN exam
A 56 yr-old male is admitted to the ICU with a blood pressure of 225/135 and complains of a headache and nausea. He reports he ran out of blood pressure meds three days ago, but also appears to
...
Pass the CCRN exam
A 56 yr-old male is admitted to the ICU with a blood pressure of 225/135 and complains of a headache and nausea. He reports he ran out of blood pressure meds three days ago, but also appears to be confused to the date and situation. What is the most appropriate treatment approach? - ans-Rapidly lower the diastolic pressure to 100 with IV antihypertensive meds, then continue to gradually reduce the diastolic pressure to 85 with oral antihypertensive meds.
The maximum initial decrease should be no more than 25% reduction from initial presenting value. Reducing the blood pressure too quickly can lead to cerebral edema or renal failure.
A patient has sepsis, receives Lactated ringers 500ml IV bolus. Which finding indicate that this intervention is having it's intended effect? - ans-ScvO2 of 72%
Early goal directed therapy for sepsis includes early fluid resuscitation at 30 ml/kg to maintain a CVP of 8-12 or 12-15 if mechanically ventilated, MAP greater than 65, ScvO2 greater than 70%, and urine output greater than 0.5 kg/hr
72 male patient in ICU for 6 days on the ventilator for treatment of a COPD exacerbation. He has been receiving VTE prophylaxis and subcutaneous Heparin since admission. Today his platelet count decreased significantly to 43,000 and was found to have new DVT on his right upper extremity. What do you suspect is the most likely cause of these findings? - ans-HIT
The hallmark sign of HIT is a significant decrease in platelet count over a 24 hours period (>50%) within 5-10 days of administering Heparin. The other hallmark sign is a new development of DVT despite being on VTE prophylaxis.
TRALI: - ans-is a complication from a blood transfusion reaction, which causes acute lung injury typically within 6 hours of a blood transfusion.
2 Hallmark signs of HIT: - ans-Decrease in platelet count over a 24 hr period.
New development of DVT despite being on VTE prophylaxis.
Values in Early compensated Hypovolemic shock? - ans-CO 4.0 L/min, HR 135, SV 65, SVR 1700, MAP 65
In hypovolemic states, circulating volume is depleted therefore preload and contractility are decreased which leads to a decrease in SV and CO. HR and SV increase as compensatory measure to preserve CO, MAP and cerebral perfusion.
Post-renal failure values: - ans-Urine output < 200; urine sodium 30; BUN: Creatinine ratio 15:1; urine specific gravity 1.010
BUN: Creatinine ratio is 15:1, but both the BUN & creatinine are elevated. Urine sodium is typically 1-40 mEq/L.
What to do in the event of HIT: - ans-Stop Heparin and administer an alternative direct thrombin inhibitor.
Warfarin is contraindicated in HIT? T/F - ans-True - there is also no evidence that shows protamine, corticosteroids, and benadryl are effective treatments for HIT
Patients with right ventricular infarctions become preload dependent. Meds that decrease preload should be avoided - which meds are these? - ans-Morphine, Nitro, Beta blockers and diuretics.
Polymorphic ventricular tachycardia aka Torsades is treated by? - ans-Magnesium
Myocardial contusions generally impact which parts of the heart? and what would the values be? - ans-Atria & right ventricle because of the position of the heart in the chest.
PAOP 6, PA Pressure 40/24, RA Pressure 16
Neurogenic shock signs? - ans-CVP: 3, CI: 2.5, SVR: 650, SBP: 88
Neuro shock is associated with a loss of sympathetic tone causing extensive peripheral vasodilation. Clinical signs and symptoms include hypotension, a low SVR, low CVP and low normal CI
What causes a larger than normal A wave on a PAOP? - ans-Mitral stenosis - causes increased left atrial pressure during atrial contraction.
Pulmonary HTN will result in what? - ans-Elevated PA pressures but have no impact on PAOP.
Infective Endocarditis can cause what kind of impairment? - ans-Neurologic impairment. One of the risks of infective endocarditis is the bacterial strand breaking in the heart and throwing bacterial emboli forward into the lungs from the right side of the heart or to the brain/body from the left side of the heart.
Neurologic impairment could be a sign? - ans-Embolic ischemic stroke.
Post bariatric surgery should avoid what kind of meds? - ans-Extended release meds due to absorption concerns post-operatively
Chlorpropamide is a what? - ans-sulfonylurea drug that is used in DI as an antidiuretic. It is primarily a glucose lowering agent. (hypoglycemia)
Will a cardiac transplant patient respond to atropine? - ans-No - pacing is the best instrument for symptomatic bradycardia.
Elevated urine osmolality; decreased serum osmolality; and decreased serum sodium is what symptom? - ans-SIADH - causes retention of water. Urine production is minimal and concentrated & leads to an increased urine osmolality.
What does Neo drug increase? - ans-SVR - Peripheral constriction
Treatment for narrow complex, regular rhythm? - ans-Administer 6mg adenosine rapidly IVP
Half life of metformin? - ans-6 hours - close monitoring is required to ensure the blood glucose level does not climb too quickly while dextrose is being administered.
Most accurate reflection of daily fluid balance? - ans-Record a daily weight at the same time each day.
Wide mediastinum on chest x-ray, narrow pulse pressure, and hypotension are signs of what? - ans-Cardiac tamponade
A patient with hyponatremia would need what? - ans-Help maintaining a safe environment. HypoNa impairs judgment, and causes confusion.
Peritoneal dialysis works on the principles of both? - ans-Diffusion and osmosis.
HHNS leads to what? - ans-Large fluid deficits and may require multiple liters of fluid, which is determined by the patient's level of dehydration and hyperosmolality.
What parameters are consistent with Pulsus Paradoxes? - ans-Decrease in SBP>10 during inspiration.
Before administering rtPA what must happen? - ans-Lower the BP to at least 185/110. An elevated BP prior to rtPA can cause hemorrhage.
Ibutilide can cause what? - ans-Torsades
A person with disecting AAA would receive what drug? - ans-PRN IV narcotic analgesia - BP management is a priority in the care of a patient with a dissecting AAA. Pain is the primary driver of HTN.
Autonomic hyperreflexia is what? - ans-This disorder is seen with spinal injuries occurring above the T6 spine.
Cause of autonomic hyperreflexia? - ans-Bladder obstruction, constipation, pressure ulcers, and pain. Usually when the noxious stimulus is identified and removed, the symptoms resolve. Checking urinary catheter for obstruction is the most appropriate next action.
MEDS for asymptomatic left ventricular systolic dysfunction? - ans-ACE or (ARB), beta-blockers and statins for all patients with a history of MI and for all patients with a reduced ejection fraction.
What is the Z point technique? - ans-is a method used to estimate ventricular end diastolic pressure. It is taken just before the closure of the mitral valve and is especially useful when an A wave does not exist on the PAOP tracing such as in atrial fib.
Ascites position for relief? - ans-Place pt on left side.
DIC lab values? - ans-Fibrinogen decreased
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