Cardiovascular Medicine Book

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Sinus Bradycardia

Aka: Sinus Bradycardia
  1. See Also
    1. Bradycardia
    2. Unstable Bradycardia
  2. Pathophysiology
    1. Normal pattern in healthy adults and athletes
      1. Baseline Bradycardia suggests physical conditioning
    2. Other causes of Sinus Bradycardia
      1. See Drug Induced Bradycardia
      2. Hypothermia
      3. Severe infection
      4. Jaundice
      5. Carotid Sinus Hypersensitivity
        1. Tight shirt collar
      6. Excessive parasympathetic stimulation
        1. Acute inferior wall Myocardial Infarction
      7. Decreased sympathetic stimulation (medications)
  3. Diagnostics: EKG Findings
    1. Regular rhythm with rate at <50 to 60 beats per minute
    2. Normal and consistent P-wave morphology
    3. Normal PR-Interval duration
  4. Differential Diagnosis
    1. See Bradycardia
  5. Management
    1. Usually physiologic and requires no treatment
    2. If hemodynamically unstable, see Unstable Bradycardia
  6. References
    1. Cardiopulmonary Resuscitation Guidelines
      1. http://www.circulationaha.org
      2. (2010) Guidelines for CPR and ECC [PubMed]
      3. (2000) Circulation, 102(Suppl I):86-9 [PubMed]

Sinus bradycardia (C0085610)

Definition (NCI) A disorder characterized by an electrocardiographic finding of abnormally slow heart rate with its origin in the sinus node. Thresholds for different age, gender, and patient populations exist. (CDISC)
Definition (NCI_CTCAE) A disorder characterized by a dysrhythmia with a heart rate less than 60 beats per minute that originates in the sinus node.
Concepts Pathologic Function (T046)
ICD10 R00.1
SnomedCT 309746001, 207040007, 49710005
English SINUS BRADYCARDIA, [D]Sinus bradycardia (context-dependent category), [D]Sinus bradycardia, Sinus bradycardia, sinus bradycardia (diagnosis), sinus bradycardia, Bradycardia sinus, bradycardia sinus, [D]Sinus bradycardia (situation), Sinus bradycardia (disorder), bradycardia; sinus, sinus; bradycardia, Sinus Bradycardia
Italian Bradicardia sinusale
German Sinusbradycardie, SINUSBRADYKARDIE, Sinusbradykardie
Japanese 洞性徐脈, ドウセイジョミャク
Spanish [D]bradicardia sinusal (categoría dependiente del contexto), BRADICARDIA SINUSAL, [D]bradicardia sinusal (situación), [D]bradicardia sinusal, bradicardia sinusal (trastorno), bradicardia sinusal, Bradicardia sinusal
Portuguese BRADICARDIA SINUSAL, Bradicardia sinusal
French BRADYCARDIE SINUSALE, Bradycardie sinusale
Czech Sinusová bradykardie
Hungarian Sinus bradycardia
Dutch bradycardie; sinus, sinus; bradycardie, sinusbradycardie
Sources
Derived from the NIH UMLS (Unified Medical Language System)


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