- receives highest percentage of systemic cardiac output
- receives highest blood flow per gram of tissue
- unlike other organs, the heart receives its blood supply during diastole
- 90% of blood flow through coronaries is during diastole
- as the heart rate increases, the amount of time spent in diastole is relatively decreased
- extracts approximately 100% of oxygen in coronary circulation
- largest arteriovenous oxygen difference
- an increase in oxygen demand is supported by an increase in coronary blood flow, not an increase in extraction of oxygen from blood like in other organs
AVERAGE 5.0 of 4 RATINGS
Qbank (0 Questions)
Davies JE, Whinnett ZI, Francis DP, Manisty CH, Aguado-Sierra J, Willson K, Foale RA, Malik IS, Hughes AD, Parker KH, Mayet J. Evidence of a dominant backward-propagating "suction" wave responsible for diastolic coronary filling in humans, attenuated in left ventricular hypertrophy. Circulation. 2006 Apr 11;113(14):1768-78. Epub 2006 Apr 3. PubMed PMID: 16585389.
PMID:16585389 (Link to Abstract)
Level of Evidence 5 and Other Journal Articles (includes Case Reports, Expert Opinions,
Personal Observations, and Biomechanic Studies)
Zanger DR, Solomon AJ, Gersh BJ. Contemporary management of angina: part II. Medical management of chronic stable angina. Am Fam Physician. 2000 Jan 1;61(1):129-38. Review. PubMed PMID: 10643954.
PMID:10643954 (Link to Abstract)
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