AUTOREGULATION-CAUSES OF TACHYCARDIA

SUMMARY

Tip: CO = HR x SV

1. Decreased CO: due to decreased arterial baroreceptor activity.

2. Decreased venous return: due to decreased atrial baroreceptor activity.

3. Inspiration: due to decreased venous return & decreased atrial baroreceptor activity.

4. Emotions (anger): due to limbic cortex stimulating the vasomotor area.

5. Pain: due to limbic cortex stimulating the vasomotor area.

6. Hypoxia.

7. Fever.

8. Thyroid hormone.

Reference(s)

Barrett, K.E., Barman, S.M., Boitano, S., Brooks, H.L., Weitz, M., Brian Patrick Kearns, Ganong, W.F. and Mcgraw-Hill Education (Firm (2016). Ganong’s review of medical physiology. 25th ed. New York: Mcgraw Hill Education.
Hall, J.E. and Hall, M.E. (2020). Guyton And Hall Textbook Of Medical Physiology. 14th ed. S.L.: Elsevier - Health Science.
West, J.B. and Luks, A.M. (2021). West’s Pulmonary Pathophysiology. Lippincott Williams & Wilkins.