QUESTION:1:C:EC1230:0:0 Approximately what percentage of cervical spine fractures are seen on the cross-table-lateral view alone? ANSWER:A 95% ANSWER:B 90% ANSWER:C 85% ANSWER:D 75% ANSWER:E 50% QUESTION:2:E:EC1230:0:0 CT scanning of the cervical spine is indicated in all the following, except: ANSWER:A To delineate areas not well-visualized with standard radiographs ANSWER:B To delineate anatomy at the area of injury ANSWER:C To further evaluate the cervical spine in patients with significant cervical pain despite normal plain films ANSWER:D To visualize the cervicothoracic junction when not visualized on plain radiography ANSWER:E To further assess ligamentous injury QUESTION:3:B:EC1230:0:0 A 24 year old healthy male patient presents to the ED following a low velocity MVC. He is awake and alert with no evidence of intoxication or significantly painful injury. He has bilateral trapezius and paracervical muscle tenderness, but none at the midline. Are cervical spine X-rays required? ANSWER:A Yes ANSWER:B No QUESTION:4:D:EC1230:0:0 All of the following are true regarding SCIWORA except: ANSWER:A Associated with complete injury in younger children ANSWER:B Associated with incomplete injury in adolescents ANSWER:C May deteriorate several hours after initial injury ANSWER:D Most commonly lower cervical injury ANSWER:E Associated with distraction injury QUESTION:5:A:EC1230:0:0 Which of the following fractures are not flexion injuries? ANSWER:A Bilateral pedicle fracture ANSWER:B Atlanto-occipital dislocation ANSWER:C Clay Shoveler's fracture ANSWER:D Bilateral facet dislocation ANSWER:E Type II odontoid fracture QUESTION:6:E:CA1330:0:0 In a grossly unstable patient with atrial fibrillation, initial therapy may include: ANSWER:A Cardioversion ANSWER:B Diltiazem with calcium pretreatment ANSWER:C Magnesium bolus followed by an infusion ANSWER:D Amiodarone bolus and infusion ANSWER:E All of the above QUESTION:7:C:CA1330:0:0 Rapid atrial fibrillation results in a reduction in cardiac output most prominently from: ANSWER:A Loss of atrial kick ANSWER:B Release of atrial natriuretic factor ANSWER:C Reduction in diastolic filling time ANSWER:D Release of B-type natiuretic peptide ANSWER:E None of the above QUESTION:8:B:CA1330:0:0 Traditional teaching holds that cardioversion of new onset atrial fibrillation does not result in embolic events. "New onset" in this traditional view generally refers to what time frame? ANSWER:A Less than 1 hour ANSWER:B Less than 2-3 days ANSWER:C Less than 1 week ANSWER:D Less than 1 month ANSWER:E Less than 1 year QUESTION:9:A:CA1330:0:0 Successful cardioversion may result in an increase in cardiac output within a few minutes after conversion; in a patient with rapid atrial fibrillation, by what mechanism? ANSWER:A Reduction in rate and therefore an increase in diastolic filling time ANSWER:B Rapid return of atrial "kick" ANSWER:C Increasing AV nodal block ANSWER:D All of the above ANSWER:E None of the above QUESTION:10:E:CA1330:0:0 ECG predictors of WPW-atrial fibrillation include which of the following: ANSWER:A Very rapid (close together) R-R intervals, equal to a rate of > 250 beats per minute ANSWER:B Wide QRS complexes ANSWER:C Bizarre QRS complexes ANSWER:D Delta wave on prior ECG ANSWER:E All of the above QUESTION:11:C:CA1700:0:0 The most sensitive test for detecting appendicitis is: ANSWER:A The presence of rebound tenderness during examination of the abdomen ANSWER:B The white blood cell count ANSWER:C Helical CT scan using enteric contrast ANSWER:D C-reactive protein ANSWER:E Right sided tenderness upon rectal examination QUESTION:12:E:CA1700:0:0 Pain medicine should not be given to abdominal pain patients who are: ANSWER:A Less than 4 years old ANSWER:B Elderly ANSWER:C Specifically request Demerol ANSWER:D Have renal failure ANSWER:E None of the above QUESTION:13:E:CA1700:0:0 Elderly (over age 80) patients with abdominal pain: ANSWER:A Most often have urosepsis ANSWER:B Have a 25%-40% chance of needing surgery for the abdominal condition ANSWER:C Are more likely than younger patients to have a classic presentation of appendicitis ANSWER:D Have a 10% prevalence of abdominal aortic aneurysm ANSWER:E b and d QUESTION:14:E:CA1700:0:0 The only sure way(s) to rule out the diagnosis of mesenteric ischemia are: ANSWER:A Ultrasound ANSWER:B Angiography ANSWER:C Surgery ANSWER:D CT Scan ANSWER:E b and c QUESTION:15:B:CA1700:0:0 Discharging patients with the diagnosis of "abdominal pain of unknown etiology": ANSWER:A Should never be done from the emergency department ANSWER:B Should be accompanied by instructions for a re-examination in 12-24 hours ANSWER:C Should only be done in male patients ANSWER:D Should never accompany the use of pain medicine ANSWER:E Should never accompany the use of an H-2 blocker QUESTION:16:C:CB1230:0:0 Attenuation coefficient refers to: ANSWER:A The amount of radiation needed to penetrate a given size patient ANSWER:B The width of the CT scan "slice" ANSWER:C The amount of radiation absorbed by a pixel ANSWER:D The degree of angulation required to properly image the brain on CT scan ANSWER:E The number of pixels per CT "slice" QUESTION:17:C:CB1230:0:0 One of the most important areas to search for subarachnoid blood on the CT scan is: ANSWER:A Around the cingulate gyrus ANSWER:B Over the convexity of the brain ANSWER:C In the Sylvian fissure ANSWER:D Adjacent to the tentorium ANSWER:E Near the foramen magnum QUESTION:18:A:CB1230:0:0 The primary difference in appearance between a brain tumor and brain abscess on CT scan is: ANSWER:A The enhanced "rim" of an abscess is smooth and thin ANSWER:B Abscess will not adequately enhance with contrast ANSWER:C The amount of edema is always greater around an abscess ANSWER:D Multiple brain tumors may found in a single brain but abscesses occur in pairs ANSWER:E There is no difference in appearance between a brain tumor and brain abscess QUESTION:19:D:CB1230:0:0 A hemodynamic infarction occurs when: ANSWER:A Extreme blood pressure elevations precipitate intraparenchymal hemorrhagic infarction ANSWER:B Hypotension causes the atrophied brain to pull away from the dura causing a subdural hemorrhagic infarction ANSWER:C Hypotension causes sludging and thrombosis of one or both carotid arteries ANSWER:D Hypotension causes regional ischemia in "watershead areas" of the brain ANSWER:E A cardiac embolus lodges in the middle cerebral artery QUESTION:20:B:CB1230:0:0 Which skull fracture not well visualized on CT? ANSWER:A Parietal Fracture ANSWER:B Basilar Skull Fracture ANSWER:C Frontal Sinus Fracture ANSWER:D Depressed Skull Fracture ANSWER:E All the above are well visualized on CT QUESTION:21:A:CB1700:0:0 All of the following agents are effective in rate control of rapid atrial fibrillation in the ED EXCEPT: ANSWER:A Digoxin ANSWER:B Diltiazem ANSWER:C Verapamil ANSWER:D Propranolol ANSWER:E Amiodarone QUESTION:22:E:CB1700:0:0 Contraindications to the use of Ibutilide for conversion of atrial fibrillation include all of the following EXCEPT: ANSWER:A Congenital prolongation of Q-T interval ANSWER:B Hypomagnesemia ANSWER:C Concurrent use of Procainamide ANSWER:D Concurrent use of Dofetilide ANSWER:E Concurrent use of Diltiazem QUESTION:23:E:CB1700:0:0 In addition to defibrillation, which of the following antiarrhythmic agents has been shown to improve survival to hospital discharge and neurologic status following pre-hospital ventricular fibrillation/pulseless V-tach? ANSWER:A Lidocaine ANSWER:B Procainamide ANSWER:C Bretylium ANSWER:D Amiodarone ANSWER:E None of the above QUESTION:24:C:CB1700:0:0 With respect to the role of Glycoprotein inhibitors in the treatment of acute transmural MI, which of the following statements is true? ANSWER:A Abciximab + LMWH has been shown to be associated with worse outcome and greater bleeding risk than Abciximab + Unfractionated heparin (NICE trial) ANSWER:B Abciximab has been shown to improve end-point survival for AMI without PTCA (GUSTO 4) ANSWER:C Abciximab + half dose rPA has been shown to improve end-point survival for AMI (GUSTO 5) ANSWER:D Tirofiban + Unfractionated heparin has been shown to improve end-point survival in AMI ANSWER:E None of the above QUESTION:25:B:CB1700:0:0 Which are the following are true regarding tenecteplase (TNK-tPA)? ANSWER:A Greater cost than alteplase (t-PA) or retevase (rPA) ANSWER:B Non-weight based dosing is associated with increased risk of bleeding complications ANSWER:C Significant mortality benefit over t-PA ANSWER:D Shorter half-life than t-PA ANSWER:E None of the Above QUESTION:26:C:CC1500:10:11 All of the following are true except: ANSWER:A LMWHs have better bioavailability than UFH ANSWER:B LMWHs have a more predictable anticoagulant response than UFH ANSWER:C LMWHs have shorter half-lives than UFH ANSWER:D LMWHs have a lower incidence of heparin-induced thrombocytopenia than UFH ANSWER:E LMWHs do not require monitoring of the aPTT QUESTION:27:C:CC1500:0:0 LMWHs have been shown to be useful in the treatment of venous thrombo-embolism (VTE). Which of the following statements is false? ANSWER:A Meta-analyses of randomized controlled trials show that LMWHs are at least as safe and effective as UFH in preventing recurrent VTE for patients with DVT ANSWER:B Outpatient therapy of DVT with LMWH leads to marked cost savings ANSWER:C When LMWH are utilized in the outpatient setting, aPTT levels must be followed ANSWER:D LMWH are not currently recommended for outpatient therapy in patients with pulmonary embolism ANSWER:E None of the above QUESTION:28:B:CC1500:46:46 LMWHs have been studied for use in patients with non-ST segment elevation acute coronary syndromes (ACS). Which of the following agents has demonstrated superiority over UFH in randomized controlled trials? ANSWER:A nadroparin ANSWER:B enoxaparin ANSWER:C dalteparin ANSWER:D tinzaparin ANSWER:E None have shown superiority over UFH QUESTION:29:D:CC1500:0:0 Preliminary investigations into the use of enoxaparin in patients with ACS who also undergo PCI, glycoprotein IIb-IIIa inhibitor therapy, or thrombolysis suggest all the following except: ANSWER:A Compared with historical controls, enoxaparin appears to cause no excess bleeding in patients who undergo PCI ANSWER:B Compared with historical controls, enoxaparin appears to cause no excess bleeding when used in conjunction with abciximab ANSWER:C Enoxparin appears to result in similar infarct-related artery patency rates compared with UFH when used with thrombolytic agents in patients with STE-myocardial infarction. ANSWER:D Enoxaparin should be used instead of glycoprotein IIb-IIIa inhibitors for patients with ACS who undergo PCI ANSWER:E All of the above are correct QUESTION:30:C:CC1500:0:0 Exclusion criteria for the outpatient use of LMWH include all the following except: ANSWER:A Age >75 ANSWER:B Age <18 ANSWER:C History of CHF ANSWER:D Evidence of pulmonary embolus ANSWER:E Active bleeding QUESTION:31:C:CC1600:0:0 The Epley maneuver works to treat benign paroxysmal positional vertigo by: ANSWER:A Deconditioning the central nervous sytem ANSWER:B Moving otolithic material from the utricle to the posterior vertical semicircular duct ANSWER:C Moving otolithic material from the posterior vertical semicircular duct to the utricle ANSWER:D sealing a leak at the round or oval window ANSWER:E Activating central nervous sytem vertigo inhibition systems QUESTION:32:B:CC1600:0:0 Common causes of dizziness include all of the following except: ANSWER:A Near syncope ANSWER:B Optic neuropathy ANSWER:C Dysequilibrium ANSWER:D Anxiety ANSWER:E Vertigo QUESTION:33:D:CC1600:0:0 Most antivertigo medications work because they are: ANSWER:A Antihistamines ANSWER:B Phenythiazines ANSWER:C Antidepressants ANSWER:D Anticholinergics ANSWER:E Benzodiazepines QUESTION:34:A:CC1600:0:0 A major distinguishing feature for acute labyrinthits as compared to vestibular neuronitis is that the former: ANSWER:A Is associated with auditory dysfunction ANSWER:B Is associated with Meniere's disease ANSWER:C Is associated with lack of response to antihistamine therapy ANSWER:D Is associated with CNS malignancy ANSWER:E None of the Above QUESTION:35:C:CC1600:0:0 Peripheral nystagmus is suggested by: ANSWER:A Vertical direction ANSWER:B Extinguishing on examination ANSWER:C Enhancement with eye closure ANSWER:D Fast component only ANSWER:E Asymmetry QUESTION:36:B:CC1700:0:0 The advantages of supine-oblique views include all of the following, except: ANSWER:A Improved visualization of the cervicothoracic junction ANSWER:B Improved visualization of the odontoid ANSWER:C Improved visualization of the posterior column ANSWER:D Improved visualization of the neural foramena ANSWER:E None of the above QUESTION:37:B:CC1700:0:0 In the NEXUS trial, the most commonly injured vertebral body was ANSWER:A C1 ANSWER:B C2 ANSWER:C C4 ANSWER:D C5 ANSWER:E C6 QUESTION:38:C:CC1700:0:0 Which of the following are important limitations in the diagnosis of traumatic aortic disruption using TEE? ANSWER:A Inability to visualize small intimal flaps ANSWER:B Inability to visualize small pseudoaneurysms ANSWER:C Inability to visualize aortic branch vessels ANSWER:D Inability to visualize the distal aorta ANSWER:E Inability to visualize the aortic arch QUESTION:39:B:CC1700:0:0 The failure rate of nonoperative management for blunt splenic injury: ANSWER:A Correlates inversely with the AAST injury grade on CT ANSWER:B Correlates directly with the AAST injury grade on CT ANSWER:C Correlates inversely with the degree of hemoperitoneum on CT ANSWER:D Correlates directly with baseline splenic size ANSWER:E Is not related to findings on abdominal CT QUESTION:40:B:CC1700:0:0 Approximately what percentage of anterior abdominal gunshot wounds can be successfully managed without surgery? ANSWER:A 10% ANSWER:B 30% ANSWER:C 50% ANSWER:D 60% ANSWER:E 90% QUESTION:41:C:CD0900:0:0 All of the following are considered criteria for the diagnosis of Kawasaki's disease except: ANSWER:A Conjunctival injection ANSWER:B Fissured lips ANSWER:C Exudative pharyngitis ANSWER:D Palmar desquamation ANSWER:E Fever for > 5 days QUESTION:42:B:CD0900:0:0 Erythema multiforme must be distinguished from which life-threatening condition? ANSWER:A Disseminated Intravascular Coagulation ANSWER:B Steven's Johnson Syndrome ANSWER:C Sepsis ANSWER:D Meningococcemia ANSWER:E Impetigo QUESTION:43:E:CD0900:0:0 The most common thrombocytopenic purpura of childhood is: ANSWER:A Henoch-Schonlein purpura ANSWER:B Rocky Mountain spotted fever ANSWER:C Enterovirus infection ANSWER:D Purpura fulminans ANSWER:E Idiopathic Throbocytopenia Purpura QUESTION:44:A:CD0900:0:0 All of the following are part of the differential diagnosis of a maculopapular rash except: ANSWER:A Hand-foot-mouth syndrome ANSWER:B Pityriasis rosea ANSWER:C Erythema Infectiosum ANSWER:D Scarlet fever ANSWER:E Roseola infantum QUESTION:45:C:CD0900:0:0 What is the most important clinical issue to identify in a case of Staphylococcal Scalded Skin Syndrome? ANSWER:A Precipitating event ANSWER:B Presence of fever ANSWER:C Dehydration ANSWER:D Use of lubricants ANSWER:E None of the above