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New Syncope Recommendations

9/7/2017

1 Comment

 
2017_Guidelines.pdf
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​In-line with the month’s cardiology theme, this note from the TR desk will discuss the evaluation of syncope, and the brand new (2 days young) ACCF/AHA Guidelines for the Evaluation and Management of Patients With Syncope.
 
TL;DR: Watch Sonal’s syncope lightning rounds, and consider using the San Fran or Boston (both links) syncope rules. Use the FREE DOTPHRASE to help remind yourself of syncope patients who may required admission.
 
The 2017 recommendations are the most evidence-based guidelines yet for the evaluation of syncope, and based on an extensive literature review and committee discussion which included emergency medicine physicians, ACEP, and SAEM! Studies report an estimated prevalence of a single episode of syncope at 19% of the population. Females have a higher prevalence of syncope, and those with chronic cardiac and vascular issues are more likely to have recurrent syncope. The most common cause of syncope is unknown in most cases (37%), followed by Reflex Syncope (21%), Cardiac Syncope (9%) and Orthostatic Hypotension (9%).
 ​
Picture
The recommendations include a relatively worthless chart (above) showing how to initially evaluate a patient with syncope, recommending a detailed history and examination including orthostatics and evaluation for new murmurs, and a neurological exam. There is also Level B evidence that syncope patients should be evaluated with an EKG (This is a level A recommendation from ACEP). Given Cardiac Syncope has a high risk of recurrence and death, this seems appropriate. The article goes on to recommend targeted lab testing in any patient where the initial evaluation and diagnosis is not crystal clear. If you were here for Dr. Batra’s excellent discussion on syncope last year, none of this is surprising to you.
 
The recommendations also discuss the use of many of the current Syncope Risk Scores, including the San Francisco Syncope Rule, Boston Syncope Rule, and Del Rosso (All three of these have Negative Predictive Values of 99%). This is probably the most important part, as we need to determine which patients are safe to discharge, versus those who should be admitted. When looking across all three rules, a few bit picture items come out; abnormal EKGs, a history of CHF or heart disease, age >65, and syncope either without a prodrome or while supine, are all concerning for higher-risk Cardiac Syncope. Additionally, we should consider alternative causes of syncope, including pulmonary embolism (DO NOT bring up the PESIT Trial), pregnancy, anemia/GI bleeding, and neurologic causes. As such, you can use the dotphrase below to help remind yourself of these potential causes, and reasons to consider admission for monitoring, Holter monitor placement, and potentially further workup.

Dotphrase/Macro

Pt here with syncope/near syncope. Seizure less likely given history and exam. No neurologic deficits on exam indicating a stroke, and no signs of head trauma or injury. Given no signs of trauma or neurologic deficit, I will withhold further imaging of the head per ACEP Choosing Wisely Recommendations. Additionally, ACEP clinical policy on syncope evaluation recommends laboratory testing and advanced investigative testing such as echocardiography or cranial CT scanning need not be routinely performed unless guided by specific findings in the history or physical examination.
 
Patient’s history includes _ prior syncopal events, _ CAD, _ DVT/PE, _ seizures. Cardiac evaluation today shows _ murmur, _ JVD, _ peripheral pulses and _ lower extremity edema. EKG today _ without signs of Brugada or QT shortening or prolongation.  _ PE risk factors. Neurologically _. Blood glucose _, _signs of hypoxia during event or currently, and _ intoxication complicating the patient’s presentation. Given this, the patient’s episode _.
Risk Factors for Serious Cause: older age, pre-syncopal exertion, history of cardiac disease including heart failure, family history of sudden death, recurrent episodes, recumbent episode, prolonged loss of consciousness, chest pain or palpitations. Age >65, and Hct <30%
 
San Francisco Syncope Rule (.ekmdmsanfran)CHF History
Hct <30%
EKG Abnormality
SOB
SBP < 90 mmHg at triage
1 Comment
John Carston link
3/9/2022 06:53:37 pm

It's great that you elaborated on the importance of evaluation to identify the needs of the patient. My cousin who is a doctor mentioned to me last night she is planning to buy a vascular exam table for her clinic, and she asked if I have any idea where is the best option to consider. Thanks to this informative article and I'll be sure to tell her that it will be much better if she consults a trusted ultrasound equipment store as they can answer all her inquiries.

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  • Clinical
    • Discharge Macros
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    • Pediatric Macros
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    • Follow Up
    • 2023 MDM
    • Heart Pathway
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