Common questions about Hespan (FAQ)
Q: What is the main reason doctors use Hespan?
According to official labeling, Hespan is used to help treat low blood volume, a condition known as hypovolemia, when the primary goal is to expand the plasma volume in the bloodstream. This is primarily done to replace lost fluid volume in specific clinical settings.
Q: What should I know about the risks of bleeding with Hespan?
Official warnings state that the use of Hetastarch solutions, including Hespan, increases the risk of a blood clotting disorder called coagulopathy. This occurs because the solution can interfere with the blood clotting process. Due to this risk, official product information states that use should be discontinued at the first sign of such a disorder.
Q: What happens if a patient gets too much Hespan?
If too much Hespan is administered, it can lead to serious adverse effects like circulatory overload. This means there is too much fluid volume in the circulation, which may cause complications such as pulmonary edema (fluid in the lungs) or congestive heart failure. Metabolic acidosis, a condition where there is too much acid in the body fluids, is also listed as a potential adverse reaction.
Q: Why do official documents mention restrictions on the amount of Hespan that can be used?
Restrictions on the maximum dose are in place because the use of Hespan, especially in high amounts or over a long duration, has been associated with significant risks. These risks include the potential for bleeding problems (coagulopathy) and possible injury to the kidneys. The limits aim to reduce these documented serious adverse effects.
Q: Do you need special monitoring when receiving Hespan?
Yes. Official documents describe that coagulation status (how well the blood clots) and kidney function are carefully monitored in patients receiving Hespan. Liver function monitoring is also mentioned as a precaution in official product information.
Q: Can Hespan affect blood tests, like clotting time?
Yes, official product information describes that Hespan interferes with the blood clotting process. By causing the dilution of blood components, including coagulation factors and platelets, it can lead to results that show prolonged or slower clotting times on laboratory tests.
Q: Is Hespan considered a colloid or crystalloid fluid?
Hespan is classified as a colloid solution. This is because its mechanism involves large, synthetic molecules that create colloid oncotic pressure—an osmotic force—to efficiently hold fluid and expand plasma volume within the bloodstream.
Q: Does taking Hespan impact the need for a blood transfusion?
Due to its mechanism, Hespan can cause hemodilution, which is a dilution of blood components like red blood cells and plasma proteins. This physiological change may be considered when a healthcare professional is making a decision about the need for a blood transfusion, depending on the patient's individual clinical status.
Q: Is it true that Hespan can cause fluid overload?
Yes. Official warnings specifically caution against the risk of circulatory overload, which is essentially fluid overload in the blood vessels. For this reason, official guidelines state that its use is contraindicated in patients with conditions like congestive heart failure, where volume overload is a known concern.
Q: Is Hespan considered a blood thinner?
Hespan is not categorized as an anticoagulant (a traditional blood thinner), but official warnings note that it interferes with the blood clotting process. This interference increases the risk of coagulopathy, which is a disorder that results in bleeding problems.
Q: How quickly does Hespan start to work?
The plasma volume expansion effect following the intravenous administration of Hespan is described as having an immediate onset in available product information. This means the intended effect begins right away once the infusion starts.
Q: What is the biggest difference between Hespan and saline solution?
The key difference is the active component. Hespan contains large hydroxyethyl starch molecules, which function by increasing the blood’s osmotic pressure and to hold fluid in the bloodstream longer. Standard saline solutions do not contain these starch molecules.
Q: Are there any long-term effects associated with using Hespan?
Official documentation notes that Hespan has primarily been studied for acute use. Its safety has not been adequately established for use over extended periods, other than for specific procedures like leukapheresis. Therefore, its use is typically limited to short courses in a controlled setting.
Q: Does Hespan cause kidney problems?
Yes, official documents carry a Boxed Warning that the use of HES products, including Hespan, increases the risk of kidney injury and the need for renal replacement therapy (RRT), also known as dialysis, in critically ill patients. Due to this risk, kidney function is routinely monitored during and after use.
Q: Is Hespan only for use in surgery?
No. While it can be used in surgical settings, its official indications extend beyond surgery. Its primary use is for the treatment of hypovolemia (low blood volume), and it is also officially indicated as an adjunct in leukapheresis procedures, which are non-surgical blood separation treatments.
Q: Are there any specific patient groups that should avoid Hespan?
Regulatory documents describe populations where use is contraindicated or not recommended due to safety concerns. These groups include critically ill adult patients (including those with sepsis), those with pre-existing severe bleeding or coagulation disorders, severe heart failure, severe kidney failure, or known hypersensitivity to the starch component.
Q: What is the chance of having a serious allergic reaction to Hespan?
Although rare, official product information reports that life-threatening anaphylactic/anaphylactoid reactions (severe allergic reactions) have occurred. Additionally, patients may develop a hypersensitivity reaction related to the corn starch component from which the product is made.
Q: Is it normal to feel a change in heart rate after receiving Hespan?
Changes in heart rate are listed in product documents as possible adverse reactions. Both an abnormally rapid heart rate (tachycardia) and an abnormally slow heart rate (bradycardia) have been reported following the administration of Hespan.
Q: Can Hespan be used during pregnancy or while breastfeeding?
There are no controlled studies of Hespan use in human pregnancy. Official documents indicate that the drug is described as being used only when the potential benefit to the mother is considered to justify the potential risk to the fetus. Caution is also advised for use in nursing mothers.
Q: What are the main contraindications for Hespan?
Contraindications are conditions where the use of the drug is contraindicated or restricted. For Hespan, these include severe bleeding disorders, severe congestive heart failure, severe renal failure, known hypersensitivity to the starch, and critical illness (including sepsis) in adult patients.
Q: How does the body get rid of Hespan?
The product is composed of molecules of varying sizes. The smaller molecules are rapidly eliminated from the body via the kidneys. The larger molecules are broken down (metabolized) over time before they are also eliminated by the kidneys.
Q: Can Hespan make liver problems worse?
Official product information advises caution when Hespan is used in patients with pre-existing liver disease. Severe liver disease is listed as a contraindication for HES products, and monitoring of liver function is often recommended in patients receiving this fluid.
Q: What is Hydroxyethyl Starch made from?
The active ingredient in Hespan, Hydroxyethyl Starch, is made from corn starch. Official warnings mention that patients may develop hypersensitivity reactions, which are sometimes related to the corn starch component.
Q: Why did the medical community change how often Hespan is used?
Official warnings were required to be updated due to clinical data showing an increased risk of mortality and kidney injury in certain groups, particularly critically ill patients. These safety findings led to changes in official use guidelines and a major reduction in how often the product is used in these populations.
Q: Does Hespan have a 'black box' warning, and what does it mean?
Yes, the product has a Boxed Warning, which is the strongest safety warning mandated by the FDA. This warning highlights the serious risks of increased mortality, kidney injury (including the need for dialysis), and coagulopathy (bleeding problems) associated with its use in certain critically ill patients.
Q: What are the most commonly reported side effects of Hespan?
The most common adverse reactions reported in official product documents include hypersensitivity reactions, coagulopathy (bleeding issues), hemodilution (dilution of blood components), circulatory overload, and metabolic acidosis.
Q: Is there a link between Hespan and itching (pruritus)?
Yes, itching (pruritus) is listed as an adverse reaction in the official product documents. In some cases, this has been reported as a long-lasting effect, sometimes thought to be related to the deposit of hydroxyethyl starch in peripheral nerves.
Q: Can Hespan be used in people with existing heart failure?
No. Severe congestive heart failure is listed as a contraindication. Official warnings state that its use is contraindicated in patients who are at risk for conditions like pulmonary edema or congestive heart failure due to the risk of dangerous volume overload.
Q: What information exists about Hespan use in emergency situations?
Official warnings specifically state that the product is contraindicated for use in critically ill adult patients, which includes those with severe conditions like sepsis or certain trauma injuries. This restriction is due to an increased risk of mortality and kidney injury in these patient groups.
Q: What kind of severe reactions are listed for Hespan?
Severe reactions listed in official documents include life-threatening anaphylactic/anaphylactoid reactions (severe allergic reactions), cardiac arrest, ventricular fibrillation, and non-cardiac pulmonary edema (fluid in the lungs).
Q: What is the purpose of the salt (sodium chloride) in Hespan solution?
Hespan is formulated in 0.9% Sodium Chloride Injection, which is commonly known as normal saline. This saline component is an isotonic solution, meaning it is used to help ensure the body's overall fluid and electrolyte balance is maintained during the infusion.
Q: What are the limitations of the research evidence for Hespan?
Official documentation indicates the safety of Hespan has not been adequately established for uses extending over prolonged periods of time. Its use is generally intended for acute, short-term volume management, with limited exceptions.
Q: Does Hespan affect how the kidneys function long-term?
The Boxed Warning highlights the risk of kidney injury and the need for renal replacement therapy (RRT) (dialysis). Official monitoring guidelines suggest that close monitoring of kidney function may be necessary for up to 90 days after receiving the product.
Q: Are there any conditions where Hespan is specifically not recommended by official guidelines?
Yes, its use is contraindicated for use in certain populations, including critically ill patients, those with sepsis, severe liver disease, severe kidney failure, or pre-existing severe coagulation or bleeding disorders, among other conditions.
Q: What are the official restrictions on using Hespan for sepsis?
The product carries a Boxed Warning that explicitly states it is contraindicated for use in critically ill adult patients, including those with sepsis. This restriction is in place due to data showing an increased risk of mortality and kidney injury in this specific patient population.
