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ACOFP 54th Annual Convention & Scientific Seminars

Urgency vs. Emergency: Pearls for the Urgent Care

Lindsay Saleski, DO, MBA, FACOEP

3/9/2017

Urgency vs. Emergency Pearls for the Urgent Care Physician LINDSAY TJIATTAS-SALESKI DO, MBA, FACOEP FAMILY PRACTICE/EMERGENCY MIDLANDS EMERGENCY PALMETTO HEALTH TUOMEY

Objectives

 To provide the urgent care physician with evidence based information regarding common outpatient presentations, initial treatment strategies and potential need for more emergent care.

1 3/9/2017

Outline

 Head trauma evaluation – PECARN and Canadian Head CT Rules  Human Bite  Evaluation of Hypertension  Supracondylar Fracture  Pharyngitis  Headache  Scaphoid Fracture  versus Anaphylaxis  Cervical spine trauma  Pulmonary Embolism Clinical Prediction Rules

Doc… my kid fell off the bed and hit their head!

 Pediatric Emergency Care Applied Research Network – PECARN

 Federally-funded multi-institutional network for research in pediatric in the United States

 Pediatric Head Injury Prediction  provides factors to identify those at very low risk of clinically important traumatic brain injuries for whom CT might be unnecessary

 Prospective cohort study of 42,412 children

 Children (<18 years) presenting within 24 hours of head trauma, with Glasgow Coma Scale scores of 14 to 15

2 3/9/2017

Pediatric Head Injury/Trauma Algorithm Children ages 2 years and Children younger than 2 years older

 Normal mental status  Normal mental status

 No scalp hematoma except frontal  No loss of consciousness

 No loss of consciousness or loss of  No vomiting consciousness for <5 seconds  Non–severe injury mechanism  Non–severe injury mechanism  No signs of basilar  No palpable skull fracture  No severe headache  Acting normally according to the parents

Doc…I fell and hit my head!

 Traumatic brain injury (TBI) = brain function impairment that results from external force  Mild: GCS  14-15 (Most Common)  Moderate: GCS  9-13  Severe: GCS  3-8  History and Physical Exam  Pupillary response  Altered motor function  Age of patient  Comorbidities ( use?)  Decision rules attempt to limit unnecessary CT imaging & identify surgical emergencies

3 3/9/2017

Canadian CT Head Injury/Trauma Rule

 Can clear a head injury without imaging

 Apply to patients with:

 GCS 13-15 and LOC

 Amnesia to the event

 Confusion

 Excludes:

 Age <16

 Seizure after injury

 Blood thinner use

Canadian Head CT Rule

 High Risk Criteria: Rules out need for neurosurgical intervention  GCS <15 at 2 hours post-injury  Suspected open or depressed skull fracture  Any sign of ?  Hemotympanum, raccoon eyes, Battle’s Sign, CSF oto-/rhinorrhea  ≥ 2 episodes of vomiting  Age ≥ 65  Medium Risk Criteria: In addition to above, rules out “clinically important” brain injury (positive CT's that normally require admission)  Retrograde amnesia to the event ≥ 30 minutes  “Dangerous” mechanism?  Pedestrian struck by motor vehicle, occupant ejected from motor vehicle, or fall from > 3 feet or > 5 stairs.

4 3/9/2017

Doc…I punched a door and now my hurts!

Human bite: the "Fight Bite”

 Clenched-fist injury: 3rd – 5th metacarpophalangeal joints of the dominant hand

 Complications: cellulitis, septic , osteomyelitis

 Injury possible to the extensor tendon/bursa, the superficial/deep fascia, joint capsule

 Polymicrobial infection with normal human oral flora:

 S. aureus (20-40%)

 Eikenella corrodens (25%)

 Streptococcus species

 Anaerobic: Prevotella species, Fusobacterium nucleatum, Pepto- streptococcus

5 3/9/2017

Treatment

 Neurovascular evaluation of the hand & plain radiographs to rule out fracture  Copious irrigation and debridement  DO NOT close the wound (exceptions  cosmetic)  Wound culture  ISDA and Tintinalli  Amoxicillin/clavulanic acid 875/125 mg PO BID  Ampicillin-sulbactam 1.5-3 gm Q 6 hours or cefoxitin 2gm Q 8 hours or piperacillin-tazobactam 3.375 grams Q6 hours  PCN allergy – clindamycin plus moxifloxacin or TMP-SMX and metronidazole

 Clindamycin 300 mg tid or 600 mg every 6–8 h plus Cipro 500–750 mg bid 400 mg every 12 h

Doc….My blood pressure is 210/115!

 First thing…Recheck it!

 HTN defined as SBP>140 mm Hg and DBP > 90 mm Hg

 Primary (essential) vs. Secondary

 ED Classification:

 Asymptomatic elevated BP without hx HTN

 Uncontrolled HTN

 Hypertensive emergency

6 3/9/2017

Hypertensive Emergency

 Hypertensive emergency = HTN with evidence of ACUTE end organ dysfunction

 Heart: Chest pain, Acute MI, Pulmonary edema

 Brain: Hypertensive encephalopathy/CVA/Hemorrhage

 Cerebral autoregulation

 Kidney: Ischemia and Renal impairment

 Vascular: Aortic Dissection

 Other: Eclampsia, Retinal Hemorrhage, drug abuse (cocaine, amphetamine)

 Sx: SOB, CP, HA, MS change, vision changes

Hypertensive Emergency Management

 Immediate treatment

 Reduce MAP 10-20% in 30-60 minutes

 Addition reduction 5-15% over next 23 hours

 Reduction beyond this risks end organ ischemia due to relative hypotension

 Exception: Aortic dissection  acute goal = 100-120mm Hg

 Drugs of choice:

 IV Meds  Nicardipine, Labetalol, Esmolol

 Disposition  admission

7 3/9/2017

Asymptomatic Hypertension

 2013 ACEP Clinical Policy on Asymptomatic Hypertension  Asymptomatic HTN  PCP f/u, no acute tx, labs may be helpful in select patients  Should I screen for target-organ injury?  Routine lab screening not required  If patients have poor follow-up, screening may identify acute kidney injury  Should I treat the blood pressure?  Medical intervention not required  If poor follow-up can treat in the ED and rx meds  Patel KK, et al. Characteristics and Outcomes of Patients Presenting With Hypertensive Urgency in the Office Setting. JAMA Intern Med. 2016 Jul 1;176(7):981-8  “Hypertensive urgency is common, but the rate of MACE in asymptomatic patients is very low. Visits to the ED were associated with more hospitalizations, but not improved outcomes. Most patients still had uncontrolled hypertension 6 months later.”

Asymptomatic Hypertension Management - Outpatient

 JNC 8 BP tx threshold of 150/90 mm Hg in the >60 age group and 140/90 mm Hg in <60 age group, DM and CKD  JNC7: chemistry, EKG, chest xray, UA, prior to initiation  Medical treatment:  Non-black: thiazide type diuretics, ACEIs, ARBs, CCBs  Black: thiazide type diuretics, CCB  Chronic kidney disease: ACE or ARB (do they have a PCP)  AHA/ACA/CDC 2014 Science Advisory:  Stage 1: lifestyle modifications and HCTZ  Stage 2: lifestyle modifications plus thiazide in combo with ACEI, ARB, CCB

8 3/9/2017

Hypertension Conclusions…

 No evidence to suggest that patients with asymptomatic hypertension should be acutely treated

 Controversy as to whether or not to prescribe antihypertensive

 ED or Urgent care visit may be one of their few contacts with a health care professional

 Counsel

 Outpatient f/u within a month

 DC instructions: Return if  severe headache, focal weakness or paresthesias, SOB

Supracondylar Fracture

Anterior humeral line

Posterior Fat Pad

9 3/9/2017

Supracondylar Fracture

 Distal proximal to condyles  Mostly in children due to strong collateral ligaments that prevent dislocation (Peak age 5-10 years)  Mechanism  FOOSH, elbow hyperextension  X-ray  Posterior fat pad sign, anterior displacement humerus  Treatment:  Gartland I: non-displaced, immobilized in posterior splint and 48 hour ortho f/u  Gartland II: Some displaced, intact posterior cortex  Gartland III: Completely displaced, no cortical contact  Surgical: Closed Reduction with pin fixation  Complications  loss of carrying angle, nerve injury, compartment syndrome, Volkmann Ischemic contracture

Lateral Elbow: Normal Anterior Humeral Line

Middle 3rd of Capitellum

10 3/9/2017

Abnormal Joint Effusion

Doc…My Throat Hurts!

 Rule out emergencies…

 Is the patient in respiratory distress?

 Drooling, trismus, Increased RR rate, hypoxia?

 Differential Diagnosis:

 Peri-tonsillar abscess  unilateral, trismus, deviation of the uvula

 Epiglottitis  sick appearing, leaning forward, drooling

 Ludwigs Angina  recent dental procedures

 Malignancy  smoking ,weight loss

 Angioedema swelling of tongue, lips, oral mucosa

 Thyroiditis  neck swelling

11 3/9/2017

Bacterial Vs. Viral Pharyngitis

 Viral  vesicular or petechial pattern on the soft palate and tonsils and is associated with rhinorrhea  16% have tonsillar exudate  55% have cervical adenopathy  64% lack cough  Diagnostic testing not necessary except: influenza, mononucleosis, & acute retroviral syndrome  Bacterial  Group A β-hemolytic Streptococcus: adults (15%), children (30%)  Incubation period of 2 to 5 days  Sudden onset of sore throat, painful swallowing, chills, and fever  :  Erythema of the tonsils (62%)  Exudate (32%)  Enlarged, tender cervical lymph nodes (76%)

Diagnostic Testing

 Centor and Modified Centor Criteria  Original article in 1981: exudates, anterior cervical adenopathy, no cough, fever  Modified in 1998: Age qualifier added  Age 3-14 years (+1)  Age 15-44 years (+0)  Age >45 years (-1)  Rapid Antigen Detection Testing (RADT) or Throat culture (gold standard)  Guidelines:  ISDA 2012  2+, perform RADT  AHA/AAP 2009  2+, perform RADT  CDC/AAFP/ACP  2, perform RADT, 3+ RADT or treat empirically  If viral sx (coryza, cough, diarrhea, ulcerative stomatitis) and score 0-1  no testing/no treating

12 3/9/2017

Treatment

 Decrease: symptom duration, infectivity  Complications:  Suppurative  peritonsillar abscess, OM, sinusitis  Non-suppurative complications acute rheumatic fever, PSGM  Antibiotics  First Line (CDC recommendations):

 Penicillin VK: Children: 250 mg twice daily or 3 times daily; adolescents and adults: 250 mg 4 times daily or 500 mg twice daily x 10 days

 Amoxicillin: 50 mg/kg once daily (max = 1000 mg); alternate: 25 mg/kg (max = 500 mg) twice daily x 10 days

 Penicillin G benzathine: <27 kg: 600,000 U; ≥27 kg: 1,200,000 U IM x 1  PCN Allergy (not severe): Cephalexin PO, Cefadroxil PO  Severe PCN Allergy: Clindamycin PO, Azithromycin PO, Clarithromycin PO  Pain Relief  NSAIDS, Acetaminophen, throat lozenges

https://www.cdc.gov/groupastrep/diseases-hcp/strep-throat.html

Steroids?

 Cochrane Review from 2012 of 8 trials involving 743 patients showed:

 “Oral or intramuscular , in addition to antibiotics, increase the likelihood of both resolution and improvement of pain in participants with sore throat. Further trials assessing corticosteroids in the absence of antibiotics and in children are warranted.”

 ISDA 2012 Guidelines  recommends against use for symptoms

 Dosing:

 Dexamethasone 0.6mg/kg, maximum 10mg

 Prednisone 60mg PO for 1-2 days

13 3/9/2017

Doc…my head hurts!

 Typical of previous headaches?  Worst headache of your life?  How did it onset? (sudden versus gradual)  Fevers and chills?  Meningeal signs?  Characterize the headache?  Associated symptoms?  Surrounding events? (trauma, pregnancy, recent infection)  Hypercoagulable or on ?  Age?

Differential Diagnosis

 Differential Diagnosis  Migraine • Tension Headache  • Sinusitis  Cluster headache • Cervical arthritis  Hypertension, hypertensive encephalopathy • Acute angle closure glaucoma  Temporal (giant cell) arteritis • Dental Abscess  Tumor • Otitis Media • TMJ  Caffeine, alcohol or drug withdrawal • Trigeminal neuralgia  Carbon monoxide poisoning • Depression  Venous sinus thrombosis • Cerebral ischemia  Pseudotumor cerebri • Post LP Headache  Post-Lumbar Puncture • Subarachnoid hemorrhage

14 3/9/2017

Subarachnoid Hemorrhage

 Acute bleed into the subarachnoid space

 Non-traumatic  Ruptured berry aneurysm 85%

 Symptoms

 Sudden onset severe headache

 Activities that increase ICP

 intercourse, coughing, weight lifting, defecation

 Nausea and vomiting

 Seizures, neck stiffness, photophobia

 “Sentinel bleed”

Subarachnoid Hemorrhage Diagnosis

 CT without contrast the longer since onset headache, less sensitive the CT  CT within 6 hours…  Lumbar puncture  If clinical suspicion and negative CT

 Persistent RBC in tubes 1-4 (usually in thousands) indicates SAH

 Zero RBCs in the 4th tube = traumatic tap  CTA/MRI – has not replaced current diagnostic approach  Treatment  evaluation  BP control  Antiemetics

15 3/9/2017

Meningitis

 1.38 out of 100,000 people with fatality rate 14.3%

 Inflammation of membranes covering spinal cord or brain due to bacterial, viral or fungal infection

 Causes

 Recent otitis, sinusitis, pneumonia or immunocompromised, trauma, neurosurgery, indwelling medical devices

 Bacterial  S. pneumoniae (MC), N. meningitides, L. monocytogenes

 Viral  Enteroviruses (MC, summer), Herpes simplex

 Fungal  Cryptococcus, Toxoplasma

 Non-infectious  Lupus, Vasculitis, Sarcoidosis etc.

Meningitis Diagnosis

 Symptoms & Exam  Fever, headache, neck stiffness, altered MS, photophobia, vomiting, seizures, petechial/purpuric rash, Kernig/Brudzinski  CT head without contrast  Before LP IDSA recommends for patients who meet any criteria:

 Immunocompromised state

 History of CNS disease (mass lesion, stroke, or focal infection)

 New-onset seizure within 1 week of presentation

 Papilledema

 Abnormal level of consciousness

 Focal neurologic deficit  LP  Contraindications  coagulopathy  Disposition  Admission and monitoring

16 3/9/2017

Chemoprophylaxis

 Exposure increases risk by 500-800x normal population

 Close contacts:

 Housemates

 Secretion exposure (kissing, shared utensils or toothbrush, person who intubated without a facemask)

 Can decrease transmission by 89% in N. menengitidis

 Initiate within 24 hours, but no later than 2 weeks

 Rifampin 10 mg/kg (max 600mg) Q 12 hours x 4 doses

 Cipro 500mg PO once

 Ceftriaxone 250mg IM once

Scaphoid Fracture

 image

Mid-distal scaphoid fracture without displacement

17 3/9/2017

Scaphoid Fracture

 Most common carpal fracture

 Must suspect with “snuff box” tenderness

 Imaging – and scaphoid x-rays Picture Thumb Spica

 Sometimes negative with acute injury “occult”

 Can CT or MRI

 Treatment of Identified fractures and suspected..

 Thumb spica splint and ortho follow-up

 Complications  (AVN)

 Distal scaphoid supplied by radial artery

 AVN of proximal fragment

• Fracture of the proximal portion of the scaphoid with displacement of the fracture fragments

18 3/9/2017

Doc, I’m itchy and my tongue is swollen…

 What is “just” an Allergic Reaction vs. Anaphylaxis?

 Vital signs?

 Causes: medications, foods, insect stings, environmental allergens, latex, exercise, and other unknown factors

 Differential Diagnosis:

 MI, arrhythmia, PE, Asthma, COPD

 Vasovagal response, anxiety, septic shock

 Scromboid poisoning, monosodium glutamate syndrome

 Ace inhibitor or hereditary induced angioedema

Definition of Anaphylaxis from NIAID/FAAN

1. “Acute onset of an illness (minutes to several hours) with involvement of the skin, mucosal tissue, or both” AND one of the following:

 Respiratory compromise or reduced BP

2. Two or more of the following that occur rapidly after exposure to a likely allergen for that patient

 Involvement of skin-mucosal tissue, respiratory compromise, hypotension, GI symptoms

3. Reduced BP after exposure to known allergen for that patient

 30% decrease in systolic BP in children or adults

Campbell, Ronna L. et al.Evaluation of National Institute of Allergy and Infectious Diseases/Food Allergy and Anaphylaxis Network criteria for the diagnosis of anaphylaxis in emergency department patients. Journal of Allergy and Clinical , Volume 129 , Issue 3 , 748 - 752

19 3/9/2017

Treatment of Anaphylaxis  Prehospital

 Evaluate VS and ABCs/monitor

 Supplemental O2

 Large bore IV access

 IV fluids, supine position with elevation of legs

 Remove hymoneptera stinger

 B-agonists – 2.5mg via nebulizer

 Steroids

Medications to Initiate

 Epinephrine 0.3 to 0.5mL (0.01mg/kg in children max 0.3 dosage) of epinephrine in a 1:1000 dilution

 IM, lateral aspect of the thigh

 Every 5-10 minutes as necessary

 Antihistamines:

 Diphenhydramine 25-50mg

 H1 and H2: Ranitidine 50mg (adult) 1mg/kg (children)

 Corticosteroids

 Prednisone 1mg/kg PO

 Methylprednisolone 125mg IV

20 3/9/2017

Disposition

 Admission

 Limited access to phone or emergency services

 Prior history of anaphylaxis

 Underlying asthma, renal disease, CHF, B-blocker usage

 Discharge after Observation

 AAAI and AI Joint Task force – observation time based on individual patients

 NIAID &FARE – observation time of 4-6 hours

 Biphasic reaction in 5-20%

Doc…my neck hurts after an MVA

 Low risk trauma patients: Alert, stable, adult trauma patient w/o neurologic deficits  National Emergency X- Utilization Study (NEXUS) - 1998  Plain cervical spine injury unnecessary if patients lack 5 criteria  99.6% sensitive, 12.9% specific, negative predictive value 99.9%  Limitations: Age >60  Canadian Cervical Spine Rule for Radiography (CCR)  3 assessments asked in sequential order  If any answer is positive  imaging  100% sensitive, 42.5% specific  Limitations: Complexity compared to NEXUS

21 3/9/2017

NEXUS Criteria

1. Absence of midline cervical tenderness

2. Normal level of alertness

3. No evidence of intoxication

4. Absence of focal neurologic deficit

5. Absence of painful distracting injury

 If any of the above criteria are present, the C-Spine cannot be cleared clinically by these criteria, consider imaging

Canadian C-Spine Rule

Assessments Definitions

1. There are no high risk factors that  Age 65 or older mandate radiography  A dangerous mechanism of injury 2. There are low risk factors that  Paresthesias in extremities allow for a safe assessment of  Simple rear-end MVA range of motion  Patient able to sit up 3. The patient is able to actively rotate the neck  Ambulatory  Delayed onset of pain  Absence of midline TTP  Can rotate neck 45 degrees bilaterally

22 3/9/2017

Cervical Spine Imaging

 Plain radiography

 3 views: Lateral, anterior-posterior, odontoid

 Clinically acceptable study: all 7 vertebrae and superior border first thoracic

 Benefits: Cost- effective, bedside, small amount of radiation

 Disadvantages: C1 & C2, Visualizing spine due to body habitus

 Cervical Spine CT

 More sensitive and specific than plain X-rays

 Consider for moderate & high risk patients

 Thoracic and Lumbar Spine Imaging

Doc…it hurts when I take a deep breath!

 History  Differential:

 Duration?  Pneumonia

 Location?  Bronchitis

 Associated symptoms?  Pulmonary embolism

 Constant or intermittent?  Pneumothorax

 Aggravating or alleviating factors?  Pericarditis

fracture

 Esophageal spasm/rupture

 Atypical CP/MI

23 3/9/2017

Pulmonary Embolism

 650,000 - 900,000 PEs each year in  Risk Factors: THROMBOSIS the US  200,000 deaths  Trauma, travel

 Pulmonary Embolism:  Hypercoagulable, hormone  Thrombus forms in the venous replacement system (MC LE DVT) and embolizes  Relatives, recreational drugs to the lung  Old (age >60)  Causes acute obstruction of the pulmonary arterial system and  Malignancy pulmonary ischemia/infarction  Birth control  Large emboli  obstruction of right  Obesity, ventricular outflow and circulatory collapse  , smoking

 Immobilization

 Sickness

Pulmonary Embolism

 Symptoms  Hemoptysis  Shortness of breath  Pleuritic chest pain  Exam: SOB, tachy, clear lungs, hypoxia, unilateral leg swelling, +/- unstable VS  Diagnosis  EKG  ST, S1Q3T3, new RBBB  CXR  Hampton Hump, Westermark sign  D-dimer  CTA/VQ Scan

24 3/9/2017

PERC Rule for Pulmonary Embolism

 Rules out PE if no criteria are present and pre-test probability is ≤15%

 If all are negative, no need for further workup, <2% chance of PE

 ACEP 2011 Clinical Policy: “Level B recommendations. In patients with a low pretest probability for suspected pulmonary embolism, consider using the PERC to exclude the diagnosis based on historical and physical examination data alone.”

 D-dimer:

 D-dimer if low-risk, but not PERC negative

 D-dimer  negative and pre-test probability is <15% then no further testing

 D-dimer  positive then CT-angiography or V/Q

Criteria for PERC Rule

 Clinical low probability (<15% probability of PE based on gestalt assessment)

 Age < 50

 HR < 100

 O2 sat on room air > 94% at near sea level

 No prior hx DVT or PE

 Recent trauma or surgery

 No Hemoptysis

 No estrogen use

 No unilateral leg swelling (asymmetrical calves on visual inspection)

25 3/9/2017

Wells Clinical Prediction Rule for PE

 Risk stratifies patients for PE & provides an estimated pre-test probability

 Based on risk, physician chooses next diagnostic study

 D-dimer

 CTA

 3 tiers: low, moderate, high

 2 tiers: unlikely, likely  (supported by ACEP’s 2011 clinical policy on PE)

 Main criticism: has a “subjective” criterion in it “PE #1 diagnosis or equally likely”

Wells Clinical Prediction Rule for PE

Point Score Risk Score Interpretation

 Suspected DVT  3  3- Tier model

 Alt dx less likely than PE  3 points  Low risk (<2 points): 1.3%

 Heart rate > 100 bpm  1.5  Mod risk (2-6 points): 16.2%

 Prior venous thrombus  1.5  High risk (>6 points): 37.5%   Immobilization w/in 4 wks  1.5 2-Tier model  PE unlikely (0-4 points): 12.1%  Active malignancy  1  PE likely (>4 points): 37.1%  Hemoptysis  1

26 3/9/2017

D-dimer

 Clots contain fibrin, degraded by plasmin  yields D-dimer  Half-life of approximately 8 hours, can be elevated for at least 3 days  Sensitivity: 94-98%, Specificity: 50-60%  Factors known to give false positive D-dimer level  Age > 70  Pregnancy  Malignancy  Recent surgical procedure  Liver disease  RA  Trauma  Potential false negatives: Lipemia, symptoms > 5 days, warfarin, small pulmonary infarction, isolated calf vein thrombosis

Closing Points…

27 3/9/2017

References Pediatric Head Trauma

 Kupperman N, Holmes J, et al. Identification of children at very low risk of clinically-important brain injuries after head trauma: a prospective cohort study. The Lancet. Volume 374, Issue 9696, 3–9 October 2009, Pages 1160–1170  Goldman R. Decision rules can identify children at very low risk of clinically important traumatic brain injury. Journal of , The, 2010-03-01, Volume 156, Issue 3, Pages 509-510, Copyright © 2010 Mosby, Inc.  Schonfeld D1, Bressan S, et al. Pediatric Emergency Care Applied Research Network head injury clinical prediction rules are reliable in practice. Arch Dis Child. 2014 May;99(5):427-31. doi: 10.1136/archdischild-2013-305004. Epub 2014 Jan 15.  Easter JS, Bakes K et al. Comparison of PECARN, CATCH, and CHALICE rules for children with minor head injury: a prospective cohort study. Ann Emerg Med. 2014 Aug;64(2):145-52, 152.e1-5. doi: 10.1016/j.annemergmed.2014.01.030. Epub 2014 Mar 11.  PECARN Pediatric Head Injury/TraumaInjury/Trauma. Algorithmhttps://www.mdcalc.com/pecarn--pediatric-head-injuryinjury--traumatrauma-- algorithm

Canadian Head CT References

 Stiell IG, Wells GA, et al. The Canadian CT Head Rule for patients with minor head injury. Lancet. 2001 May 5;357(9266):1391-6.

 Stiell IG, Clement CM, et al. Comparison of the Canadian CT Head Rule and the New Orleans Criteria in patients with minor head injury. JAMA. 2005 Sep 28;294(12):1511-8.

 Easter JS, Hakoos JS, et al. Traumatic intracranial injury in intoxicated patients with minor head trauma. Acad Emerg Med. 2013 Aug;20(8):753-60. doi: 10.1111/acem.12184.

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References Fight Bite

 Goldstein E, Abrahamian F. Human Bites. Mandell, Douglas, and Bennett's Principles and Practice of Infectious Diseases, Updated Edition. 320, 3510-3515.e1. Eighth Edition. Copyright © 2015 by Saunders, an imprint of Elsevier Inc.  Stevens D, Bisno A, Chambers H, et. al. Practice Guidelines for the Diagnosis and Management of Skin and Soft Tissue Infections: 2014 Update by the Infectious Diseases Society of America. CID 2014:59 (15 July).  Germann CA. Germann C.A. Germann, Carl A.Nontraumatic Disorders of the Hand. In: Tintinalli JE, Stapczynski J, Ma O, Yealy DM, Meckler GD, Cline DM. Tintinalli J.E., Stapczynski J, Ma O, Yealy D.M., Meckler G.D., Cline D.M. Eds. Judith E. Tintinalli, et al.eds. Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8e. New York, NY: McGraw- Hill; 2016. http://accessmedicine.mhmedical.com.vcom.idm.oclc.org/content.as px?bookid=1658§ionid=109447692. Accessed February 13, 2017.

Hypertension References

 Chobanian AV, Bakris GL, Black HR, et al. The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation and Treatment of High Blood Pressure – The JNC 7 Report. JAMA. 2003; 289 (19):2560-2572.  James PA, Oparil S, Carter BL, et al. 2014 Evidence-Based Guideline for the Management of High Blood Pressure in Adults: Report from the Panel Members Appointed to the Eigth Joint National Committee (JNC 8). JAMA. 2014;311(5):507-520.  Goldberg E. An Evidence-Based Approach to Managing Asymptomatic Elevated Blood Pressure in the Emergency Department. Emergency Medicine Practice. February 2015. Volume 17, Number 2.  Patel KK, et al. Characteristics and Outcomes of Patients Presenting With Hypertensive Urgency in the Office Setting. JAMA Intern Med. 2016 Jul 1;176(7):981-8.  Wolf et al. Clinical Policy: Critical Issues in the Evaluation and Management of Adult Patients in the Emergency Department with Asymptomatic Elevated Blood Pressure. Ann Emergency Medicine;62:59-68

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Supracondylar Fracture References

 Blok B, Cheung D, Platts-Mills T. Elbow Injuries: Supracondylar Fracture. First Aid for the Emergency Medicine Boards. Copyright 2016 by McGraw-Hill Education. P215-16  The Treatment of Pediatric Supracondylar Humerus Fractures: Evidence Based Guideline and Evidence Report. American Academy of Orthopedic Surgeons. Published in 2011. http://www.aaos.org/research/guidelines/SupracondylarFracture/SupC onFullGuideline.pdf  Chow YC. Chow Y.C. Chow, Yvonne C.Elbow and Injuries. In: Tintinalli JE, Stapczynski J, Ma O, Yealy DM, Meckler GD, Cline DM. Tintinalli J.E., Stapczynski J, Ma O, Yealy D.M., Meckler G.D., Cline D.M. Eds. Judith E. Tintinalli, et al.eds. Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8e New York, NY: McGraw-Hill; 2016. http://accessmedicine.mhmedical.com.vcom.idm.oclc.org/content.as px?bookid=1658§ionid=109446609. Accessed March 08, 2017.

References for PERC/PE

 Kline JA, Mitchell AM et al. Clinical criteria to prevent unnecessary diagnostic testing in emergency department patients with suspected pulmonary embolism. J Thromb Haemost. 2004 Aug;2(8):1247-55.  Kline JA, Courtney DM et al. Prospective multicenter evaluation of the pulmonary embolism rule- out criteria. J Thromb Haemost. 2008 May;6(5):772-80. doi: 10.1111/j.1538-7836.2008.02944.x. Epub 2008 Mar 3.  Dachs R, Endres J, Garber M. Pulmonary Embolism Rule-Out Criteria: A Clinical Decision Rule That Works. Am Fam Physician. 2013 Jul 15;88(2):98-100.  Fesmire, Francis MD. ACEP News Contributing Writer. June 1, 2011. ACEP Clinical Policy Review: Suspected Pulmonary Embolism. http://www.acepnow.com/article/acep-clinical-policy-review- suspected-pulmonary-embolism/2/?singlepage=1  Critical Issues in the Evaluation and Management of Adult Patients Presenting to the ED with suspected PE. ACEP Clinical Policy. Ann Emerg Med 2011;57:628-652  Kline JA. Kline J.A. Kline, Jeffrey A.Venous Thromboembolism. In: Tintinalli JE, Stapczynski J, Ma O, Yealy DM, Meckler GD, Cline DM. Tintinalli J.E., Stapczynski J, Ma O, Yealy D.M., Meckler G.D., Cline D.M. Eds. Judith E. Tintinalli, et al.eds. Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8e New York, NY: McGraw-Hill; 2016. http://accessmedicine.mhmedical.com.vcom.idm.oclc.org/content.aspx?bookid=1658§ioni d=109429015. Accessed March 08, 2017.

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Pharyngitis References

 Hildreth A, Takhar S. Evidence Based Evlauation and Mangement of Patients with Pharyngitis in the Emergency Department. Emergency Medicine Practice. September 2015. Volume 17, Number 9.

 Hayward G, Thompson MJ, Perera R, Et al. Corticosteroids as a standalone or add-on treatment for sore throat. Cochrane Database Syst Rev. 2012;10:CD008268.

 Schams SC, Goldman RD. Steroids as adjuvant treatment of sore throat in acute bacterial pharyngitis. Can Fam Physician. 2012;58(1):52-54

 Hartman ND. Hartman N.D. Hartman, Nicholas D.Neck and Upper Airway. In: Tintinalli JE, Stapczynski J, Ma O, Yealy DM, Meckler GD, Cline DM. Tintinalli J.E., Stapczynski J, Ma O, Yealy D.M., Meckler G.D., Cline D.M. Eds. Judith E. Tintinalli, et al.eds. Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8e. New York, NY: McGraw-Hill; 2016. http://accessmedicine.mhmedical.com.vcom.idm.oclc.org/content.aspx?bookid=1658§ionid=1093 87281. Accessed February 13, 2017.

 Evaluation of Pharyngitis. Urgent Care RAP. April 2015: Volume 1, Issue 2. Accessed 3/7/17.

 Group A Streptococcal Disease, For Clinicians. CDC. https://www.cdc.gov/groupastrep/diseases- hcp/index.html. Accessed 3/7/17.

 Shulman et al. Clinical Practice Guideline for the Diagnosis and Management of Group A Streptococcal Pharyngitis: 2012 Update by the Infectious Diseases Society of America. CID. https://www.idsociety.org/uploadedFiles/IDSA/Guidelines- Patient_Care/PDF_Library/2012%20Strep%20Guideline.pdf

Headache References

 Blok B, Cheung D, Platts-Mills T. Subarachnoid Hemorrhage. First Aid for the Emergency Medicine Boards. 3rd Edition. p846-848.

 Blok B, Cheung D, Platts-Mills T. CNS Infections: Meningitis. First Aid for the Emergency Medicine Boards. 3rd Edition. p840-843.

 Based Approach to Diagnosis and Management of Subarachnoid Hemorrhage in the ED. Emergency Medicine Practice: October 2014, Vol. 16, Number 10

 Blok KM, Rinkel GJ et al. CT within 6 hours of headache onset to rule out subarachnoid hemorrhage in nonacademic hospitals. . 2015 May 12;84(19):1927-32. doi: 10.1212/WNL.0000000000001562. Epub 2015 Apr 10.

 Carpenter C, Hussain A et al. Spontaneous Subarachnoid Hemorrhage: A Systematic Review and Meta-analysis Describing the Diagnostic Accuracy of History, Physical Examination, Imaging, and Lumbar Puncture With an Exploration of Test Thresholds. Academic Emergency Medicine. Volume 23, Issue 9, pages 963–1003, September 2016

 Perry J et al. Sensitivity of computed tomography performed within six hours of onset of headache for diagnosis of subarachnoid haemorrhage: prospective cohort study. BMJ 2011;343:d4277

 Nicole M. Dubosh, M. Fernanda Bellolio, Alejandro A. Rabinstein and Jonathan A. Edlow. Sensitivity of Early Brain Computed Tomography to Exclude Aneurysmal Subarachnoid Hemorrhage. Stroke. 2016;STROKEAHA.115.011386, originally published January 21, 2016

 Bamberger D. Diagnosis, Initial Management, and Prevention of Meningitis. Am Fam Physician. 2010 Dec 15;82(12):1491-1498.

 Erin N. Quattromani, MD, and Amer Z. Aldeen, MD. Focus On: Emergent Evaluation and Management of Bacterial Meningitis. ACEP News May 2008. https://www.acep.org/clinical---practice-management/focus-on--emergent-evaluation-and-management-of-bacterial-meningitis.

 Tiffee A, Zosky M. Meningitis: Clinical Pearls an Pitfalls. Feb 4, 2015. http://www.emdocs.net/meningitis-clinical-pearls-pitfalls/

 Hackman JL, Nelson AM, Ma O. Hackman J.L., Nelson A.M., Ma O Hackman, Jeffrey L., et al.Spontaneous Subarachnoid and Intracerebral Hemorrhage. In: Tintinalli JE, Stapczynski J, Ma O, Yealy DM, Meckler GD, Cline DM. Tintinalli J.E., Stapczynski J, Ma O, Yealy D.M., Meckler G.D., Cline D.M. Eds. Judith E. Tintinalli, et al.eds. Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8e New York, NY: McGraw-Hill; 2016. http://accessmedicine.mhmedical.com.vcom.idm.oclc.org/content.aspx?bookid=1658§ionid=109436521. Accessed March 08, 2017.

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Scaphoid References

 Boyd A, Benjamin H, Apslund C, Splints and Casts: Indications and Methods. Am Fam Physician. 2009 Sep 1;80(5):491-499.

 Jones B, MD, Rozental T. Ortho Info: Scaphoid Fracture of the Wrist. American Academy of Orthopedics. Last reviewed March of 2016. http://orthoinfo.aaos.org/topic.cfm?topic=A00012

 Phillips G, Reibach A, Slomiany P. Diagnosis and Management of Scaphoid Fractures. Am Family Physician. 2004 Sep 1;70(5):879-884.

Allergic Reaction References

 Singer E, Zodda D. Allergy and Anaphylaxis: Principles of Acute Emergency Management. Emergency Medicine Practice. August 2015. Volume 17. Number 8.  Campbell, Ronna L. et al.Evaluation of National Institute of Allergy and Infectious Diseases/Food Allergy and Anaphylaxis Network criteria for the diagnosis of anaphylaxis in emergency department patients. Journal of Allergy and Clinical Immunology , Volume 129 , Issue 3 , 748 - 752  Sampson HA, Munoz-Furlong A, Bock SA, et al. Symposium on the definition and management of anaphylaxis: summary report. J Allergy Clinical Immunology. 2005;115(3):584-591  Liebman P, Nicklas RA, Oppenheimer J, et al. The diagnosis and management of anaphylaxis practice parameter: 2010 update. J Allergy Clinical Immunology. 2010;126 (3)477-480.  Liebman P. Biphasic anaphylactic reactions. Ann Allergy Asthma Immunology. 2005;95 (3):217-226

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Neck Pain References

 Go S. Go S Go, Steven.Spine Trauma. In: Tintinalli JE, Stapczynski J, Ma O, Yealy DM, Meckler GD, Cline DM. Tintinalli J.E., Stapczynski J, Ma O, Yealy D.M., Meckler G.D., Cline D.M. Eds. Judith E. Tintinalli, et al.eds. Tintinalli’s Emergency Medicine: A Comprehensive Study Guide, 8e New York, NY: McGraw-Hill; 2016. http://accessmedicine.mhmedical.com.vcom.idm.oclc.org/content.aspx?bookid=1658§ioni d=109387434. Accessed March 02, 2017.  Pullen, Lara. Imaging Not a Necessity for Spine Evaluation in Trauma Patients. http://www.acepnow.com/article/imaging-necessity-spine-evaluation-trauma-patients/  Brunk, Doug. ACEP News June 2008. Studies Challenge Spine Injury Criteria for Children. https://www.acep.org/Clinical---Practice-Management/Studies-Challenge-Spine-Injury-Criteria- for-Children/  Updated Guidelines For Management Of Acute Cervical Spine And Spinal Cord Injury In Pediatric Patients. September 2014. EB Medicine.  Current Guidelines For Assessment Of Cervical Spine And Vertebral Artery Injuries In Adults Following Blunt Trauma. July 2014. EB Medicine.  Cervical Spine Injury: An Evidence-Based Evaluation Of The Patient With Blunt Cervical Trauma. April 2009. EB Medicine.

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