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Related Concept Videos

Special considerations while measuring pulse01:13

Special considerations while measuring pulse

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Assessing a patient's pulse is a fundamental skill in healthcare, but certain situations require special attention:
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Introduction Cardiac Emergencies01:30

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Cardiac emergencies are critical situations involving the heart that require immediate medical intervention to prevent severe complications or death. These emergencies often arise from underlying heart conditions that impair the heart's ability to function correctly.Types of Cardiac EmergenciesThe most common types of cardiac emergencies include Acute Coronary Syndrome (ACS), myocardial infarction (MI), cardiac arrest, and heart failure.Acute Coronary Syndrome (ACS)Acute Coronary Syndrome (ACS)...
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Cardiopulmonary Resuscitation IV: Pharmacological Management01:25

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Pharmacologic intervention is crucial in treating cardiac arrest patients during ACLS or Advanced Cardiovascular Life Support. The ACLS algorithms guide the administration of specific drugs based on the patient's cardiac arrest rhythm, which includes pulseless ventricular tachycardia (VT), ventricular fibrillation (VF), asystole, and pulseless electrical activity (PEA).EpinephrineIndication: Epinephrine is the first-line drug for all cardiac arrest rhythms.Mechanism of Action: Epinephrine...
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SBAR II: Application of SBAR01:14

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SBAR is an effective communication tool used by healthcare professionals to communicate patient information accurately. SBAR stands for Situation, Background, Assessment, and Recommendation. For a better understanding, an example is given below.
SBAR Report from a Nurse to a Health Care Provider
S: "Hello, Dr. Smith. This is Jane, RN, from the Med Surg unit. I am calling to tell you about Ms. White in Room 210, who is experiencing increased pain and redness at her incision site. Her recent...
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Cardiopulmonary Resuscitation III: AED Use01:23

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Introduction to AEDAn Automated External Defibrillator (AED) is a portable medical device that analyzes the heart's rhythm and, if necessary, delivers an electrical shock to help the heart re-establish an effective rhythm during sudden cardiac arrest (SCA). SCA occurs when the heart suddenly and unexpectedly stops beating, leading to a loss of blood flow to the brain and other vital organs. In such emergencies, time is of the essence, and using an AED, combined with Cardiopulmonary...
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Decreased pulse rate01:14

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Bradycardia is a medical condition in which the heart rate is slower than normal. It occurs when the heart's natural pacemaker, the sinus node, generates slower electrical impulses than the standard rhythm. In adults, bradycardia is diagnosed when the pulse rate falls below 60 beats per minute, indicating a deviation from the normal heart rate range.
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Related Experiment Video

Updated: Nov 6, 2025

Tilt Testing with Combined Lower Body Negative Pressure: a "Gold Standard" for Measuring Orthostatic Tolerance
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ACR Appropriateness Criteria® Syncope.

, Seth J Kligerman1, Julie Bykowski1

  • 1University of California San Diego, San Diego, California.

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PubMed
Summary
This summary is machine-generated.

Syncope and presyncope evaluations can be challenging due to diverse causes. Imaging plays a role in specific cases, guided by clinical suspicion and evidence-based criteria for appropriate use.

Keywords:
AUCAppropriate Use CriteriaAppropriateness CriteriaCardiovascularEchocardiogramNeurologicPresyncopeRadiography

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Area of Science:

  • Cardiology
  • Neurology
  • Radiology

Background:

  • Syncope and presyncope account for over a million US emergency room visits annually.
  • Determining the cause is complex due to varied etiologies, ranging from benign vasovagal syncope to life-threatening cardiac causes.
  • While history and physical exam are primary, imaging aids diagnosis in specific clinical contexts.

Framework:

  • The American College of Radiology Appropriateness Criteria provide evidence-based guidelines for imaging in syncope and presyncope.
  • These guidelines are developed through rigorous analysis of medical literature and expert consensus.
  • Methodologies like RAND/UCLA and GRADE inform the recommendations for imaging procedures.

Implementation:

  • Resting transthoracic echocardiography is often appropriate for initial cardiac imaging when a cardiovascular etiology is suspected.
  • Chest radiography may be considered in specific clinical situations, particularly when cardiac or neurologic pathology is unlikely.
  • Imaging is guided by clinical presentation, physical examination, and electrocardiogram (ECG) findings.

Implications:

  • Appropriate use of imaging can help differentiate between benign and serious causes of syncope.
  • Guidelines aid clinicians in selecting the most suitable imaging studies, optimizing patient care.
  • Accurate diagnosis through appropriate imaging is crucial for managing the risk associated with potentially fatal etiologies.