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Related Concept Videos

Decreased Body Temperature01:29

Decreased Body Temperature

A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by sustained extreme cold exposure, and severe...
Cardiopulmonary Resuscitation IV: Pharmacological Management01:25

Cardiopulmonary Resuscitation IV: Pharmacological Management

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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Related Experiment Video

Updated: May 8, 2026

Establishment of Deep Hypothermic Circulatory Arrest in Rats
08:39

Establishment of Deep Hypothermic Circulatory Arrest in Rats

Published on: December 16, 2022

Deep hypothermic circulatory arrest.

Bulat A Ziganshin1, John A Elefteriades

  • 1Aortic Institute, Yale-New Haven Hospital, New Haven, Connecticut, USA; ; Department of Surgical Diseases No. 2, Kazan State Medical University, Kazan, Russia.

Annals of Cardiothoracic Surgery
|August 27, 2013
PubMed
Summary
This summary is machine-generated.

Hypothermic circulatory arrest (HCA) is a key neuroprotection strategy in aortic arch surgery. While effective, prolonged HCA risks neurological damage, prompting exploration of alternative perfusion techniques.

Keywords:
Deep hypothermic circulatory arrestaortic arch surgerycerebral perfusionneuroprotection

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Area of Science:

  • Cardiovascular Surgery
  • Neuroprotection
  • Aortic Arch Surgery

Background:

  • Cerebral protection is paramount during aortic arch surgery.
  • Hypothermic circulatory arrest (HCA) has been the standard neuroprotection method since the 1970s.
  • Prolonged HCA is linked to adverse neurological outcomes, necessitating adjunctive perfusion strategies.

Purpose of the Study:

  • To provide a historical and clinical comparison of deep hypothermic circulatory arrest (DHCA) with other cerebral protection techniques.
  • To discuss the evolution and current considerations in neuroprotection during aortic arch surgery.

Main Methods:

  • Review of historical and clinical data comparing DHCA with antegrade (ACP) and retrograde cerebral perfusion (RCP).
  • Discussion of technical uncertainties and risks associated with ACP and RCP.
  • Evaluation of the convenience, simplicity, and effectiveness of DHCA.

Main Results:

  • Antegrade cerebral perfusion (ACP) is preferred over retrograde cerebral perfusion (RCP) due to its closer mimicry of physiological perfusion.
  • Uncertainties remain regarding optimal ACP parameters (e.g., unilateral vs. bilateral, flow rate, temperature, perfusion site).
  • Deep hypothermic circulatory arrest (DHCA) is considered convenient, simple, and effective for most elective and emergency aortic arch surgeries.

Conclusions:

  • Despite advancements, DHCA remains a justifiable primary neuroprotection strategy in many aortic arch surgery scenarios.
  • Further research may clarify optimal parameters for adjunctive perfusion techniques like ACP.
  • The choice of cerebral protection strategy should balance effectiveness, safety, and procedural simplicity.