Thermoregulation and body fluids: role of blood volume and central venous pressure - PubMed (original) (raw)
Review
Thermoregulation and body fluids: role of blood volume and central venous pressure
T Morimoto. Jpn J Physiol. 1990.
Free article
Abstract
Dehydration due to hyperthermia induces both hyperosmolality and hypovolemia. Hyperosmolality reduces evaporative cooling, and alters the thermal responsiveness of the hypothalamic center to changes in both the central and peripheral milieu. Hypovolemia also reduces the thermoregulatory response, but its effect is more variable. The potential sensor of hypovolemia is the CVP, which is influenced by redistribution of blood volume, changes in blood volume, and alterations in cardiac function. The control of CVP is related to the regulation of vascular compliance, stressed blood volume, and unstressed blood volume. Vascular compliance is also involved in the regulation of fluid shifts between the ISF and the intravascular fluid space, and buffers changes in the CVP. Regulation of fluid replacement after thermal dehydration can be considered both from the point of view of osmoregulation and volume regulation. In the rehydration process, control of plasma osmolality precedes blood volume regulation, which also suggests that changes in blood volume sensed as changes in the CVP are regulated within a narrow range by various mechanisms. These findings suggest a hierarchic structure for the homeostatic mechanisms related to thermoregulation, with higher priority being given to the maintenance of cardiac output and the cellular volume of the brain at the expense of peripheral circulation and cell volume.
Similar articles
- Thermoregulation and body fluid osmolality.
Morimoto T, Itoh T. Morimoto T, et al. J Basic Clin Physiol Pharmacol. 1998;9(1):51-72. doi: 10.1515/jbcpp.1998.9.1.51. J Basic Clin Physiol Pharmacol. 1998. PMID: 9793803 Review. - Interactions between body fluid homeostasis and thermoregulation in humans.
Nose H, Kamijo YI, Masuki S. Nose H, et al. Handb Clin Neurol. 2018;156:417-429. doi: 10.1016/B978-0-444-63912-7.00025-4. Handb Clin Neurol. 2018. PMID: 30454604 Review. - Effects of diuretic-induced hypovolemia/isosmotic dehydration on cardiorespiratory responses to hyperthermia and its physical treatment in rabbits.
Brozmanova A, Jochem J, Javorka K, Zila I, Zwirska-Korczala K. Brozmanova A, et al. Int J Hyperthermia. 2006 Mar;22(2):135-47. doi: 10.1080/02656730500531988. Int J Hyperthermia. 2006. PMID: 16754597 - The cardiac filling pressure following exercise and thermal stress.
Kirsch KA, Röcker L, von Ameln H, Hrynyschyn K. Kirsch KA, et al. Yale J Biol Med. 1986 May-Jun;59(3):257-65. Yale J Biol Med. 1986. PMID: 3751134 Free PMC article. - [Volume status and central venous pressure].
Janssens U, Graf J. Janssens U, et al. Anaesthesist. 2009 May;58(5):513-9. doi: 10.1007/s00101-009-1531-2. Anaesthesist. 2009. PMID: 19390756 Review. German.
Cited by
- A century of exercise physiology: concepts that ignited the study of human thermoregulation. Part 3: Heat and cold tolerance during exercise.
Notley SR, Mitchell D, Taylor NAS. Notley SR, et al. Eur J Appl Physiol. 2024 Jan;124(1):1-145. doi: 10.1007/s00421-023-05276-3. Epub 2023 Oct 5. Eur J Appl Physiol. 2024. PMID: 37796292 Review. - Vascular compliance and left ventricular compliance cross talk: Implications for using long-term heat acclimation in cardiac care.
Horowitz M, Hasin Y. Horowitz M, et al. Front Physiol. 2023 Mar 7;14:1074391. doi: 10.3389/fphys.2023.1074391. eCollection 2023. Front Physiol. 2023. PMID: 36960151 Free PMC article. Review. - Dex modulates the balance of water-electrolyte metabolism by depressing the expression of AVP in PVN.
Yang W, Li H, Cheng Z, Lu Y, Li W, Feng J, Wang L, Cheng J. Yang W, et al. Front Pharmacol. 2022 Aug 23;13:919032. doi: 10.3389/fphar.2022.919032. eCollection 2022. Front Pharmacol. 2022. PMID: 36081946 Free PMC article. - Regulation of Body Temperature by the Nervous System.
Tan CL, Knight ZA. Tan CL, et al. Neuron. 2018 Apr 4;98(1):31-48. doi: 10.1016/j.neuron.2018.02.022. Neuron. 2018. PMID: 29621489 Free PMC article. Review. - The effect of vagal afferent on total vascular compliance in rats.
Kinoshita T. Kinoshita T. J Anesth. 1993 Apr;7(2):198-205. doi: 10.1007/s0054030070198. J Anesth. 1993. PMID: 15278474
Publication types
MeSH terms
LinkOut - more resources
Full Text Sources
Other Literature Sources