Hypotension
Hypotension - Related Videos
09:29
2-Vessel Occlusion/Hypotension: A Rat Model of Global Brain Ischemia
0 Views •
Cited by 35 •
2013
Bilateral carotid occlusion coupled with systemic hypotension produces global brain ischemia in the rat, resulting in damage to the hippocampus with reproducible severity. Animal subjects are impaired with predictable patterns of brain damage, they recover expediently, and mortality rates are comparatively low.
08:45
Echocardiographic Assessment Using Subxiphoid-Only Examination for Hypotensive Patients
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2025
The protocol here provides a rapid, phenotype-based approach for focused ultrasound evaluation of the hypotensive patient, using subcostal images of the inferior vena cava and heart, with additional views of the upper lungs and pleural spaces.
05:05
Ultrasound Cyclo Plasty in Eyes with Glaucoma
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Cited by 17 •
2018
Glaucoma is a chronic disease with progressive degeneration of optic nerve fibers resulting in decreased visual field. Elevated intraocular pressure is considered the most important and the only treatable risk factor. This manuscript describes a simple, surgeon-friendly, non-incisional technique, named Ultrasound Cyclo Plasty, for reducing intraocular pressure in glaucoma patients.
10:36
A Swine Model of Neonatal Asphyxia
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Cited by 50 •
2011
Large animal models have good translational values in the examination of physiology and pharmacology of neonatal asphyxia. Using newborn piglets, we develop an experimental protocol to simulate neonatal asphyxia which has advantages of studying the systemic and regional hemodynamics, oxygen transport with biochemical and pathologic pathways and correlations.
11:40
Quantitative Autonomic Testing
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Cited by 179 •
2011
Standardized, comprehensive and fully quantitative testing of autonomic functions is described. The autonomic tests consist of evaluation of all three major autonomic domains including cardiovagal, adrenergic and sudomotor. The severity and distribution of dysautonomia is quantitated using Composite Autonomic Severity Scores.
FAQs
The clinical significance of hypotension depends on which physiological link fails. Reduced blood volume limits circulating supply, reduced cardiac output lowers forward flow, excessive vasodilation decreases vascular support, and impaired autonomic regulation disrupts compensation. Identifying the dominant mechanism helps clinicians select management and anticipate whether tissue perfusion may deteriorate.
A rapid fall can be more concerning than a longstanding low reading because the body and organs have less time to adapt. Interpretation therefore requires attention to symptom development, physical findings, underlying condition, and the timing of the change, rather than relying on the pressure value alone.
The same reading may have different implications because severity depends on the individual’s underlying condition and whether the pressure change is sudden or gradual. A patient with cardiac dysfunction, infection, bleeding, dehydration, or medication effects may require a different level of concern than someone without these contributing factors.
Assessment begins with measuring blood pressure and then integrates symptoms, physical findings, medical history, and the clinical context. This broader approach helps distinguish a potentially meaningful perfusion problem from an isolated numerical finding and directs evaluation toward causes such as dehydration, bleeding, infection, medication effects, or cardiac dysfunction.
Management is matched to the suspected mechanism and cause. Fluid therapy may address decreased blood volume, while medication adjustment may be relevant when drugs contribute. If cardiac dysfunction, infection, bleeding, or another underlying problem is suspected, treating that condition becomes central. This cause-directed strategy avoids treating the pressure number alone.
Monitoring is important because a low pressure reading can signal inadequate tissue perfusion and possible organ injury. Clinicians should reassess the pressure together with symptoms and physical findings, while considering whether the suspected cause is resolving. This ongoing clinical picture helps determine whether treatment is effective and whether additional evaluation is needed.