31 Participants Needed

Angiotensin II for Low Blood Pressure During Surgery

RF
TT
Overseen ByThomas Templeton, MD
Age: 18+
Sex: Any
Trial Phase: Phase 4
Sponsor: Wake Forest University Health Sciences
Must be taking: Ace inhibitors, Arbs
No Placebo GroupAll trial participants will receive the active study treatment (no placebo)
Prior Safety DataThis treatment has passed at least one previous human trial
Approved in 1 JurisdictionThis treatment is already approved in other countries

Trial Summary

Will I have to stop taking my current medications?

The trial does not specify if you need to stop taking your current medications. However, since it includes patients already on certain blood pressure medications, you might be able to continue them. Please confirm with the trial coordinators.

What data supports the effectiveness of the drug Angiotensin II (Giapreza) for treating low blood pressure during surgery?

A case report showed that Angiotensin II (Giapreza) improved blood pressure in a patient with severe low blood pressure due to a drug overdose, suggesting it can help manage low blood pressure in challenging situations.12345

Is Angiotensin II safe for use in humans during surgery?

There is limited safety data specifically for Angiotensin II during surgery, but related drugs acting on the renin-angiotensin system have been associated with low blood pressure during surgery. Some guidelines suggest stopping these drugs before surgery to avoid this risk, but the evidence is not definitive.15678

How is the drug Angiotensin II (Giapreza) different from other treatments for low blood pressure during surgery?

Angiotensin II (Giapreza) is unique because it is a novel vasopressor (a drug that raises blood pressure) that can be used when other standard vasopressors are not effective, particularly in cases of vasodilatory shock. It works by directly constricting blood vessels, which can help improve blood pressure and reduce the need for other medications.1291011

What is the purpose of this trial?

Hypotension in adult patients undergoing general anesthesia is common. This can lead to hypoperfusion of vital organs, organ damage, and states of increased metabolic duress. This may be worse in patients with underlying essential hypertension and worse in patients taking Angiotensin Converting Enzyme Inhibitors (ACE) and Angiotensin Receptor Blockers (ARBs). Intravenous (IV) administration of Ang II may be an effective treatment of hypotension in this patient population.

Research Team

RF

Rohesh Fernando, MD

Principal Investigator

Wake Forest University Health Sciences

Eligibility Criteria

This trial is for adults with high blood pressure who are undergoing general anesthesia and have been treated with blood pressure medications, including ACE inhibitors or ARBs, for over two months. It's not suitable for individuals with asthma, severe obesity (BMI > 40), pregnant women, those with a history of serious heart or lung conditions, stroke, deep vein thrombosis or difficult airways.

Inclusion Criteria

I will be put to sleep for surgery.
I have been treated for high blood pressure with medication for over 2 months.

Exclusion Criteria

I have chronic obstructive pulmonary disease.
I have had a heart attack or have cardiac stents.
You have a hard time breathing.
See 7 more

Timeline

Screening

Participants are screened for eligibility to participate in the trial

2-4 weeks

Treatment

Participants receive intravenous (IV) administration of Angiotensin II to manage hypotension during general anesthesia

up to 1 hour
1 visit (in-person)

Follow-up

Participants are monitored for safety and effectiveness after treatment

4 weeks

Treatment Details

Interventions

  • Angiotensin II
Trial Overview The study is testing the effectiveness of intravenous Angiotensin II as a treatment for low blood pressure that occurs during general anesthesia in patients who already have high blood pressure and are on certain medications.
Participant Groups
3Treatment groups
Experimental Treatment
Group I: Participants on ARBsExperimental Treatment1 Intervention
Participants taking ARBs (angiotensin-receptor blockers) will be placed into this group. Intervention: Drug: Angiotensin II.
Group II: Participants on ACE inhibitorsExperimental Treatment1 Intervention
Participants taking ACE inhibitors (angiotensin-converting enzyme inhibitors)will be placed into this group. Intervention: Drug: Angiotensin II.
Group III: Other Classes of Antihypertensive AgentsExperimental Treatment1 Intervention
Participants taking any other class of Antihypertensive Agents will be placed into this group. Intervention: Drug: Angiotensin II.

Angiotensin II is already approved in United States for the following indications:

🇺🇸
Approved in United States as Giapreza for:
  • Septic shock
  • Vasodilatory shock

Find a Clinic Near You

Who Is Running the Clinical Trial?

Wake Forest University Health Sciences

Lead Sponsor

Trials
1,432
Recruited
2,506,000+

National Heart, Lung, and Blood Institute (NHLBI)

Collaborator

Trials
3,987
Recruited
47,860,000+

National Institute on Aging (NIA)

Collaborator

Trials
1,841
Recruited
28,150,000+

Findings from Research

Patients receiving renin angiotensin antagonists (RAA) during elective surgeries had a significantly higher incidence of intraoperative hypotension (76.0% vs 45.9%) and acute kidney injury (11.6% vs 1.6%) compared to those not on RAA, indicating potential safety concerns.
The study also found that RAA use was associated with a higher rate of major adverse cardiac or cerebrovascular events (6.2% vs 0%), suggesting that RAA may increase the risk of serious complications during surgery.
Association of renin angiotensin antagonists with adverse perioperative events in patients undergoing elective orthopaedic surgery: a case-control study.Zainudheen, A., Scott, IA., Caney, X.[2018]
Angiotensin II (Giapreza) was successfully used to treat vasodilation caused by a tricyclic overdose, improving hemodynamic parameters in the patient.
This novel application of angiotensin II may allow for lower doses of other vasopressors, potentially enhancing patient outcomes in cases of vasodilatory shock.
A Patient With Tricyclic Antidepressant Overdose With Catecholamine-Resistant Hypotension Rescued With Angiotensin II: A Case Report.Ferdowsali, J., Ferdowsali, K.[2021]
A single oral dose of captopril significantly reduced blood pressure in 26 patients with renovascular disease, indicating its effectiveness as an acute angiotensin-converting enzyme (ACE) inhibitor.
The blood pressure response to captopril was predictive of postoperative outcomes, with a strong correlation between preoperative captopril-induced blood pressure changes and postoperative blood pressure levels, suggesting it could be a useful tool for anticipating surgical results.
Acute response to captopril as a predictive test for surgery in renovascular hypertension.Salvetti, A., Arzilli, F., Nuccorini, A., et al.[2018]

References

Association of renin angiotensin antagonists with adverse perioperative events in patients undergoing elective orthopaedic surgery: a case-control study. [2018]
A Patient With Tricyclic Antidepressant Overdose With Catecholamine-Resistant Hypotension Rescued With Angiotensin II: A Case Report. [2021]
Acute response to captopril as a predictive test for surgery in renovascular hypertension. [2018]
Prospective Randomized Evaluation of Preoperative Angiotensin-Converting Enzyme Inhibition (PREOP-ACEI). [2019]
Acute Bradykinin Receptor Blockade During Hemorrhagic Shock in Mice Prevents the Worsening Hypotensive Effect of Angiotensin-Converting Enzyme Inhibitor. [2018]
The hemodynamic effects of anesthetic induction in vascular surgical patients chronically treated with angiotensin II receptor antagonists. [2022]
Inhibition of vasoconstriction by angiotensin receptor antagonist GR117289C in arterial grafts. [2019]
Chronic utilization of agents acting on the renin-angiotensin system and intraoperative arterial pressure. [2013]
Intraoperative cardiac arrest: was it the ACE inhibitor? [2014]
10.United Statespubmed.ncbi.nlm.nih.gov
Treating anesthesia-induced hypotension by angiotensin II in patients chronically treated with angiotensin-converting enzyme inhibitors. [2019]
Use of Angiotensin II for Post Cardiopulmonary Bypass Vasoplegic Syndrome. [2019]
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