Related Experiment Video
Updated: Jan 23, 2026

Acetylcholine Re-Challenge After Intracoronary Nitroglycerine Administration
Published on: April 4, 2022
Palliative Use of Nitroglycerin to Improve Microvascular Circulation
Rose K McGahan1, Ellin F Gafford1, Bryan A Whitson1
1The Ohio State University Wexner Medical Center, Columbus, OH, USA.
Background:
In the setting of critical illness, life preservation may come at the expense of limb as increasing concentration of vasopressors causes peripheral ischemia. When goals of care specify comfort measures, clinicians are faced with the difficult task of mitigating already present distal malperfusion while abiding to wishes of patient and patients' families. Physical changes post vasopressor use, such as mottling of appendages or cooling of skin, can limit meaningful physical interactions with grieving family members.
Case Presentation:
We describe a case series of successful utilization of intravenous nitroglycerin to improve postvasopressor digital ischemia for comfort care measures to assist patient's families in the grieving process.
Conclusion:
Following decision for comfort care measures, management for patient care goes beyond the realm of pain control. Dignified dying is an active process that requires clinicians to navigate care for both patient and patients' families. By reversing the digital ischemia associated with vasopressors, patients' families have the opportunity to give meaningful touch in setting of which it may be needed most.
Related Concept Videos
Fetal Circulation
Two umbilical arteries transport blood from the fetus to the placenta. At the placenta, the blood absorbs oxygen and nutrients while simultaneously eliminating waste products. This oxygen-enriched and nutrient-rich blood then returns to the fetus through one...
Coronary Circulation
Coronary circulation begins at the base of the aorta, where two main arteries arise—the left and right coronary arteries. These arteries encircle the heart in the coronary sulcus and supply the...
Overview of Pulmonary Circulation
The process begins with the right ventricle of the heart pumping deoxygenated blood into the pulmonary trunk. This large vessel extends about 5 centimeters before splitting into the left and right pulmonary arteries. These arteries...
Overview of Systemic and Pulmonary Circulation
The oxygenated blood is sent...
Improving Translational Accuracy
Improving Translational Accuracy

