Differentiating Cardiogenic, Hypovolemic, and Distributive Shock in Dogs

By Dr. Zubair Khalid, DVM, MS, PhD · 2026-08-11

Key Takeaways

• Differentiating cardiogenic, hypovolemic, and distributive shock in dogs relies on integrating physical examination findings, point-of-care ultrasound, and basic laboratory data, as compensatory mechanisms overlap significantly.
• Cardiogenic shock is often characterized by jugular venous distension, pulmonary crackles (B-lines on ultrasound), a dilated, poorly contractile left ventricle, and potentially bradycardia, indicating primary pump failure.
• Hypovolemic shock typically presents with flat jugular veins, clear lung fields, a small, hyperdynamic left ventricle, and a rapid response to fluid boluses, reflecting decreased circulating volume.
• Distributive shock, particularly early sepsis, may exhibit brick-red mucous membranes, rapid capillary refill, bounding pulses, and hyperdynamic ventricles, but progresses to resemble hypovolemic shock due to vascular leakage and relative hypovolemia.
• Lactate elevation is a universal indicator of global tissue hypoxia across all shock types, but its clearance rate after initial fluid administration is a more valuable prognostic marker than its absolute value for assessing response to therapy.
• A carefully monitored fluid challenge serves as a critical diagnostic tool, with improvement indicating hypovolemia, transient improvement suggesting distributive shock, and deterioration pointing towards cardiogenic shock or fluid overload.

Shock is a state of global tissue hypoxia resulting from inadequate oxygen delivery relative to metabolic demand. In dogs, the clinical presentation of shock varies substantially depending on the underlying mechanism, and early differentiation among cardiogenic, hypovolemic, and distributive forms directly influences diagnostic and monitoring decisions. This article provides a diagnostic framework for the practicing veterinarian, focusing on point-of-care parameters that distinguish these shock types at the bedside. It assumes familiarity with basic cardiovascular physiology and emergency assessment, and it deliberately excludes treatment protocols.

The central diagnostic challenge is that compensatory mechanisms overlap across shock categories. A dog with severe hypovolemia may present with tachycardia and pale mucous membranes, while a dog with distributive shock from sepsis may show similar findings despite a different hemodynamic profile. Cardiogenic shock adds further complexity because pump failure can coexist with, or be triggered by, other shock states. This article answers the clinical question of how to identify the dominant shock mechanism using physical examination, point-of-care ultrasound, and basic laboratory data, and it explains the physiological rationale for each discriminating parameter.

At a Glance

Defining Shock by Hemodynamic Mechanism

Shock is best understood as a failure of the circulation to deliver sufficient oxygen to meet tissue demands. The three categories addressed here differ in the primary physiological defect. Cardiogenic shock results from pump failure, where myocardial dysfunction reduces cardiac output despite adequate or elevated filling pressures. Hypovolemic shock results from a reduction in circulating blood volume, which decreases preload and consequently lowers stroke volume. Distributive shock results from loss of vascular tone and endothelial barrier integrity, causing maldistribution of blood flow and relative hypovolemia despite normal or increased total blood volume.

These mechanisms are not mutually exclusive. A dog with septic peritonitis may develop distributive shock from endotoxemia and then become hypovolemic from third-space fluid losses. A dog with dilated cardiomyopathy may present in cardiogenic shock and develop pulmonary edema, which impairs oxygenation and worsens tissue hypoxia. The clinician's task is to identify the dominant mechanism at presentation and to recognize when multiple mechanisms coexist. The RECOVER Initiative veterinary CPR guidelines emphasize that cardiovascular collapse is a dynamic process, and the same principle applies to shock classification: the dominant mechanism can shift during the course of illness.

The Role of Vascular Leakage in Shock Pathophysiology

Vascular leakage has emerged as a major contributor to circulatory failure across shock types. The endothelial barrier maintains vascular integrity through intercellular junctions and the glycocalyx, a carbohydrate-rich layer lining the luminal surface. Inflammatory mediators, including pathogen-associated molecular patterns and damage-associated molecular patterns, disrupt this barrier and increase capillary permeability. The resulting extravascular fluid accumulation worsens hypovolemia and produces interstitial edema that impairs oxygen diffusion and organ function. A 2025 review of vascular leakage during circulatory failure describes how this process is triggered by the inflammatory response and how fluid balance correlates directly with outcomes across different shock types. The review also notes that no routine drug is currently available to control vascular leakage in humans, despite promising preclinical findings.

This pathophysiology has direct diagnostic implications. In early distributive shock, the physical examination may reveal warm extremities and bounding pulses because peripheral vasodilation increases blood flow to the skin and muscles. As vascular leakage progresses, effective circulating volume falls, and the clinical picture shifts toward one that resembles hypovolemic shock. The distinction matters because the two conditions respond differently to fluid administration, and the diagnostic framework presented here accounts for this temporal evolution.

Compensatory Mechanisms and Their Diagnostic Signatures

The body's response to shock follows a predictable sequence that shapes the clinical examination. In hypovolemic shock, baroreceptor activation triggers sympathetic outflow, producing tachycardia, vasoconstriction, and increased myocardial contractility. These compensatory mechanisms preserve arterial blood pressure until approximately 25 to 30 percent of blood volume is lost, at which point hypotension becomes apparent. The physical examination reflects this physiology: pale mucous membranes, prolonged capillary refill time, weak peripheral pulses, and cool extremities.

Distributive shock presents a different compensatory signature. Early in the course, vasodilation produces warm, hyperemic mucous membranes and bounding pulses despite hypotension. The capillary refill time may be rapid instead of prolonged. As the syndrome progresses, however, compensatory vasoconstriction and vascular leakage produce a clinical picture that increasingly resembles hypovolemic shock. This temporal shift explains why serial examinations are more informative than a single assessment.

Cardiogenic shock produces the most distinctive findings. Reduced cardiac output triggers sympathetic activation, but the failing heart cannot increase output in response to increased afterload. Jugular venous distention reflects elevated right atrial pressure, and pulmonary crackles may indicate left-sided congestive failure. The presence of a gallop rhythm or arrhythmia on auscultation further supports a cardiac cause. These findings contrast sharply with the flat jugular veins and clear lung fields typical of pure hypovolemic shock.

Point-of-Care Ultrasound as a Discriminating Tool

Thoracic and abdominal point-of-care ultrasound provides rapid, noninvasive information that distinguishes shock types. In hypovolemic shock, the caudal vena cava appears small and collapses during inspiration, the cardiac chambers appear reduced in size, and the ventricles may show hyperdynamic contractility as the heart attempts to compensate for reduced preload. In cardiogenic shock, the left atrium is enlarged, ventricular contractility is visibly reduced, and pulmonary edema may produce B-lines on lung ultrasound. Distributive shock shows variable findings, but the ventricles often appear hyperdynamic in early sepsis, and the vena cava may be normal or only mildly collapsed.

The AAHA/AAFP fluid therapy guidelines for dogs and cats recommend that fluid administration be guided by repeated assessment of perfusion parameters instead of a single measurement. Point-of-care ultrasound fits this paradigm because it allows the clinician to track changes in chamber size and vena caval diameter in response to fluid therapy, providing real-time feedback on whether the cardiovascular system is responding appropriately.

Laboratory Parameters and Their Limitations

Lactate is elevated in all forms of shock because anaerobic metabolism increases when oxygen delivery falls below demand. The magnitude of elevation correlates with shock severity, but it does not discriminate among shock types. A more specific finding is the pattern of metabolic derangements. Hypovolemic shock from hemorrhage produces a lactic acidosis with a normal or elevated hemoglobin concentration early in the course, whereas distributive shock from sepsis may show a more mixed picture with respiratory alkalosis in the early hyperventilatory phase.

Total plasma sulfide has been investigated as a marker of shock severity in human patients. A study of 41 nonsurgical intensive care unit patients with various shock types found that total plasma sulfide correlated with norepinephrine dose, severity of disease as measured by the Acute Physiology and Chronic Health Evaluation II score, and mortality. Survivors had lower total plasma sulfide concentrations than nonsurvivors. This marker is not yet established in veterinary medicine, but it illustrates the ongoing search for biomarkers that reflect the severity and type of circulatory failure. For the practicing veterinarian, serial lactate measurement remains the most practical laboratory tool for tracking resuscitation progress, recognizing that it reflects global tissue hypoxia instead of the specific shock mechanism.

Sequential Assessment: From Triage to Working Diagnosis

The differentiation of shock types in dogs is not a single test but a structured sequence of observations, each refining the differential list. A practical approach moves from the physical examination to targeted point-of-care testing, then to ultrasound interrogation, and finally to a working diagnosis that can be revised as the patient responds or fails to respond to initial stabilization.

Step 1: Physical Examination and Vital Signs

The initial triage examination provides the first discriminators. Heart rate, pulse quality, mucous membrane color, capillary refill time, and mental status should be assessed together, because no single parameter is pathognomonic.

Jugular venous distension is a high-value discriminator. In a dog with hypotension and poor perfusion, distended jugular veins point toward cardiogenic or obstructive causes, whereas flat jugular veins support hypovolemic or distributive mechanisms. The MSD Veterinary Manual describes this distinction as central to the initial shock classification in small animal patients.

Step 2: Blood Pressure and Perfusion Indices

Non-invasive oscillometric or Doppler blood pressure measurement should follow the physical examination. Hypotension, defined as systolic pressure below 90 mmHg or mean pressure below 60 mmHg, confirms shock but does not differentiate its cause. The pattern of blood pressure change over time adds information. A dog that is normotensive but tachycardic with poor perfusion may be in compensated shock, whereas a hypotensive dog has progressed to decompensation.

Mean arterial pressure below 60 mmHg compromises coronary and cerebral perfusion and triggers further neuroendocrine activation. Serial measurements, taken every 5 to 10 minutes during the initial assessment, reveal trends that a single reading cannot. A falling pressure despite apparent stabilization suggests ongoing hemorrhage, progressive vasodilation, or worsening myocardial function.

Step 3: Lactate and Perfusion Markers

Venous or arterial lactate provides a quantitative measure of tissue hypoxia. A lactate above 2.5 mmol/L indicates anaerobic metabolism, and values above 4 mmol/L are associated with more severe compromise. Lactate alone does not differentiate shock type, but the rate of clearance after initial fluid administration carries prognostic weight. A dog whose lactate falls by more than 10 percent per hour is responding to therapy, regardless of the underlying mechanism.

Total plasma sulfide has been investigated as a marker of shock severity in human ICU patients, with higher concentrations correlating with norepinephrine dose and mortality, but this assay is not clinically available in veterinary practice and should not be used in routine canine assessment. Lactate remains the practical perfusion marker for the general practitioner.

Step 4: Point-of-Care Ultrasound

Thoracic and abdominal ultrasound performed at the point of care adds structural information that physical examination cannot provide. The examination should be systematic and brief, ideally completed within 5 minutes.

Cardiac Assessment

Focused echocardiography evaluates left ventricular size and contractility, and pericardial space. A hyperdynamic heart with a small, hypercontractile left ventricle supports hypovolemia. A dilated, poorly contractile ventricle with normal or increased chamber size suggests cardiogenic shock. Pericardial effusion with right atrial collapse indicates tamponade, an obstructive cause that requires different management.

The RECOVER Initiative guidelines emphasize that cardiac ultrasound in the emergency setting should answer specific questions: Is the heart contracting well? Is the left ventricle full or empty? Is there pericardial fluid? These three questions discriminate among the major shock mechanisms with reasonable accuracy.

Lung and Pleural Assessment

B-lines on lung ultrasound indicate pulmonary edema, which favours cardiogenic shock. Pleural effusion may accompany cardiac disease or may indicate a thoracic mass or trauma. The absence of B-lines in a hypotensive dog makes cardiogenic pulmonary edema less likely, although left-sided congestive heart failure can present without sonographic B-lines in early stages.

Abdominal Assessment

The abdominal focused assessment with sonography for trauma, or AFAST, detects free fluid. In a hypotensive dog, free abdominal fluid suggests hemorrhage, which is a hypovolemic mechanism. The absence of free fluid does not exclude hypovolemia, because fluid may be sequestered in the gastrointestinal tract or lost through other routes.

Step 5: Integrating Findings into a Working Diagnosis

The decision tree below integrates the major point-of-care parameters. No single branch is absolute, and the clinician should weight findings according to their reliability in the individual patient.

A dog with hypotension, flat jugular veins, a small hyperdynamic heart, and no B-lines most likely has hypovolemic or distributive shock. The distinction between these two is made by the response to a fluid challenge and by the presence of an inflammatory trigger. A dog with fever, a history of vomiting or diarrhea, or suspected sepsis is more likely distributive. A dog with a history of trauma or external fluid loss is more likely hypovolemic.

A dog with hypotension, distended jugular veins, a dilated poorly contractile heart, and B-lines has cardiogenic shock until proven otherwise. Fluid therapy in this patient is dangerous and may precipitate fulminant pulmonary edema. The AAHA/AAFP Fluid Therapy Guidelines caution that fluid administration must be guided by the suspected shock mechanism, not by blood pressure alone.

The Fluid Challenge as a Diagnostic Test

When the shock type remains uncertain after initial assessment, a carefully monitored fluid challenge serves as both therapy and diagnostic test. A bolus of 10 to 15 mL/kg of isotonic crystalloid is administered over 15 to 20 minutes, with reassessment of heart rate, blood pressure, jugular vein filling, and lung auscultation at the end of the bolus.

A dog that improves and maintains improvement has hypovolemic shock. A dog that improves transiently then deteriorates has distributive shock with ongoing vasodilation and vascular leakage. A dog that worsens, developing tachypnoea, crackles, or jugular distension, has cardiogenic shock or has transitioned to fluid overload. The AAHA/AAFP Fluid Therapy Guidelines recommend this staged approach to fluid administration, with reassessment after each bolus instead of a fixed total volume.

The fluid challenge must be stopped immediately if respiratory effort increases or crackles develop. In a dog with suspected cardiogenic shock, a smaller challenge of 3 to 5 mL/kg over 30 minutes may be used, with continuous monitoring. The response to fluid is the single most informative dynamic test available to the general practitioner.

Documenting the Assessment

The medical record should capture the sequence of findings, also the final diagnosis. Record the initial vital signs, blood pressure, lactate, ultrasound findings, and the response to each fluid challenge. Include the volume and rate of fluids administered, the time of reassessment, and the parameters that changed. This documentation supports later review if the patient deteriorates and provides the data needed to revise the working diagnosis.

The AVMA practice resources emphasize that medical records should support continuity of care and defensible clinical reasoning. In shock cases, where the diagnosis may evolve over hours, the record becomes the primary tool for tracking that evolution.

Limitations of the Point-of-Care Approach

The point-of-care approach has genuine limitations. Ultrasound is operator-dependent, and a dog with poor acoustic windows may not yield interpretable images. Lactate can be elevated in non-shock conditions such as seizures or severe exertion. Blood pressure measurements can be inaccurate in small or obese dogs, or in patients that are moving or distressed.

Vascular leakage contributes to distributive shock through endothelial barrier dysfunction, and this process is not directly measurable at the bedside. The review of vascular leakage during circulatory failure describes how interstitial fluid accumulation worsens organ dysfunction, but no point-of-care test quantifies endothelial permeability in the clinical setting. The clinician must infer leakage from the pattern of fluid responsiveness and the development of edema.

Species differences matter. Cats differ from dogs in their hemodynamic responses and in the prevalence of certain shock types, and the parameters described here are calibrated for canine patients. Breed differences in thoracic conformation affect ultrasound windows and auscultatory findings. The clinician should adjust the interpretation of findings to the individual patient and should state the level of diagnostic certainty in the medical record.

Recognized Complications and Early Detection

Each shock category carries specific failure modes that can be recognized before they become irreversible. In cardiogenic shock, the dominant risk is progression from compensated low output to overt pulmonary edema or fatal arrhythmia. Serial thoracic auscultation, respiratory effort scoring, and continuous electrocardiography detect this transition. A dog that develops tachypnoea, increased bronchovesicular sounds, or a gallop rhythm during stabilization requires immediate reassessment of preload tolerance.

Hypovolemic shock fails most often through under-resuscitation or over-resuscitation. Under-resuscitation manifests as persistent tachycardia, worsening lactate trends, and declining urine output. Over-resuscitation appears as chemosis, serous nasal discharge, or increased lung sounds on ultrasound. The AAHA/AAFP fluid therapy guidelines emphasize that fluid balance, the difference between intake and output, correlates directly with outcomes across shock types, so meticulous recording of every bolus and estimated loss is a diagnostic act, not a clerical one.

Distributive shock, particularly sepsis, carries the additional risk of vascular leakage that perpetuates hypovolemia despite ongoing fluid administration. The 2025 review of vascular leakage during circulatory failure describes how endothelial barrier breakdown worsens shock through interstitial fluid sequestration and secondary microcirculatory dysfunction. Early detection relies on recognizing that a dog continues to require escalating fluid support without improving perfusion parameters, or develops dependent edema while still showing signs of hypovolemia.

Common Diagnostic Errors and Corrective Actions

The most frequent error in shock classification is anchoring on the first abnormal parameter. A dog with a low blood pressure and pale mucous membranes may be labelled hypovolemic when the true problem is cardiogenic, and the fluid bolus then precipitates pulmonary edema. The corrective action is to perform point-of-care ultrasound before fluid administration whenever cardiac disease is a plausible differential, and to treat the fluid challenge as a diagnostic test with defined endpoints.

A second error is overinterpreting a single lactate value without context. Lactate rises with hypoperfusion from any cause, and a normal value does not exclude compensated shock. Serial measurement, not a single reading, distinguishes improving from deteriorating perfusion. Similarly, a normal blood pressure in a tachycardic dog does not rule out shock, it may reflect successful compensation.

A third error is failing to revisit the working diagnosis when the response to treatment is unexpected. If a dog classified as hypovolemic does not improve after an appropriate fluid challenge, the clinician must reconsider distributive or cardiogenic mechanisms instead of simply repeating the bolus. The fluid challenge is only informative when its endpoints are defined in advance.

Evidence Limitations and Divergent Expert Opinion

The evidence base for shock classification in dogs draws heavily on human medicine and experimental models. The systematic review of nitric oxide pathway inhibition in anaphylactic shock found no strong evidence that blocking the NO/cGMP pathway alone restores anaphylactic hypotension, which illustrates how even well-studied mechanisms resist simple therapeutic targeting. Extrapolating these findings to dogs requires caution, as the reviewed studies were predominantly rodent models.

Similarly, the study of total plasma sulfide as a shock severity marker in human ICU patients showed correlation with norepinephrine dose and mortality, but this parameter has no established reference range or clinical role in veterinary medicine. Expert opinion still differs on whether markers such as this will eventually aid shock classification in dogs or remain research tools.

Areas of genuine uncertainty include the optimal timing and volume of fluid resuscitation in distributive shock, the role of synthetic colloids, and the threshold at which vasopressor support should begin in dogs that do not respond to fluids. The RECOVER initiative provides evidence-evaluated guidance for the cardiac arrest context, but consensus on pre-arrest hemodynamic management is less formalised.

Referral, Consultation, and Reporting

Referral to a specialty or emergency facility is warranted when a dog requires mechanical ventilation, continuous vasopressor infusion, or advanced hemodynamic monitoring such as central venous pressure or cardiac output measurement. Early consultation is preferable to transfer after deterioration, as transport itself imposes additional stress on a marginal patient.

Laboratory involvement is indicated when the cause of shock is unclear, when coagulopathy is suspected, or when serial blood gas and lactate measurements are needed to guide therapy. A complete blood count, biochemistry panel, and coagulation profile should accompany the initial assessment in any dog where the shock classification remains uncertain after point-of-care testing.

Regulatory reporting obligations vary by jurisdiction. In most regions, no reporting is required for naturally occurring shock in dogs. However, if shock results from suspected envenomation by a regulated species, adverse drug reaction, or a notifiable infectious disease such as leptospirosis, the practitioner should consult local requirements. The WOAH terrestrial animal health standards describe international reporting expectations for listed diseases, and the AVMA practice resources provide guidance on professional obligations, but the specific legal duties depend on the practice location.

Frequently Asked Questions

How Do I Differentiate Shock Types When Point-of-Care Ultrasound Is Unavailable?

Physical examination and basic vital parameters can narrow the differential substantially. Hypovolemic shock typically presents with pale mucous membranes, slow capillary refill time, collapsed peripheral veins, and a thin, rapid pulse. Distributive shock often shows injected or brick-red mucous membranes with a rapid capillary refill time, bounding pulses in early sepsis, and warm extremities. Cardiogenic shock frequently combines signs of poor perfusion with pulmonary crackles, jugular venous distension, or a cardiac murmur or arrhythmia. Serial blood pressure and lactate measurements add discriminatory value. A fluid challenge of small aliquots with reassessment after each bolus remains the most practical substitute for ultrasound, provided the patient is monitored for volume overload. The AAHA and AAFP fluid therapy guidelines describe safe challenge protocols and monitoring parameters.

What Is the Most Reliable Single Parameter for Distinguishing Shock Types?

No single parameter is reliable in isolation. Lactate elevation confirms hypoperfusion but does not identify the mechanism. Blood pressure distinguishes compensated from decompensated shock but not its cause. Central venous oxygen saturation reflects the balance between oxygen delivery and consumption, yet it cannot separate distributive from cardiogenic failure without additional data. The most reliable approach combines physical findings with sequential lactate measurements, blood pressure trends, and ultrasound assessment of cardiac function and volume status. Total plasma sulfide has shown correlation with shock severity and norepinephrine requirements in human ICU patients, but its clinical utility in dogs remains unvalidated. The MSD Veterinary Manual emphasizes that shock classification requires integration of multiple parameters instead of reliance on any single test.

How Should I Proceed When the Working Diagnosis Remains Unclear After Initial Assessment?

Repeat the examination after a brief observation period. Trends matter more than single readings. Recheck blood pressure, heart rate, mucous membrane color, and lactate after 15 to 30 minutes. If the patient remains stable, perform a more detailed ultrasound examination including lung fields and vena cava assessment. Consider additional diagnostics such as echocardiography, thoracic radiography, or basic coagulation testing. If the patient deteriorates, treat the most life-threatening possibility first while continuing diagnostic efforts. Document the uncertainty explicitly in the medical record, including which differentials remain active and what findings would support or refute each. The RECOVER Initiative guidelines emphasize structured reassessment during resuscitation, a principle that applies equally to diagnostic refinement.

What Are the Resource-Limited Alternatives to Advanced Monitoring?

A Doppler blood pressure device, a urinary catheter for hourly output, and serial packed cell volume and total protein measurements provide substantial diagnostic information. Jugular venous distension assessment requires no equipment. Serial body weight measurements detect fluid accumulation. Capillary refill time, mucous membrane color, and pulse quality remain reproducible when performed consistently by the same observer. A simple fluid challenge with reassessment of perfusion parameters after each aliquot can distinguish volume-responsive from volume-refractory states. The AAHA and AAFP fluid therapy guidelines outline monitoring strategies that do not depend on advanced equipment, including urine output targets and perfusion parameter reassessment intervals.

How Does the Diagnostic Approach Differ in Cats or Other Species?

Cats present additional challenges. They frequently develop cardiogenic shock with minimal auscultatory abnormalities, and their small size limits ultrasound windows. Feline patients with distributive shock may show normal or low heart rates instead of tachycardia. Hypovolemic cats often present with hypothermia and bradycardia, which can be mistaken for decompensated cardiogenic shock. The diagnostic framework described for dogs applies conceptually across species, but reference ranges for heart rate, blood pressure, and lactate differ. The MSD Veterinary Manual provides species-specific normal values and clinical interpretations. The WOAH terrestrial animal health standards address shock recognition primarily in livestock and production species, where physical examination findings and response to fluid therapy carry greater weight than advanced diagnostics.

How Should I Communicate Diagnostic Uncertainty to the Owner or Referring Veterinarian?

Use clear language that distinguishes what is known from what remains uncertain. State the working diagnosis, the evidence supporting it, and the specific findings that would change the classification. Explain that shock type can evolve during treatment, particularly when distributive and hypovolemic components coexist. Vascular leakage during circulatory failure can create a mixed picture where initial hypovolemia transitions to distributive physiology. The AVMA practice resources offer guidance on client communication and medical record documentation. Provide the owner with a realistic range of diagnostic possibilities and the monitoring plan that will clarify the picture. Avoid false certainty, but do not overwhelm the owner with every differential. Offer to contact the referring veterinarian with updates at defined intervals.

Related Clinical & Scientific Guides

• Toxicology in Emergency Practice: Common Poisons and Diagnostic Approach
• Veterinary Cardiopulmonary Resuscitation: Post-Cardiac Arrest Care
• Fluid Therapy Guidelines for Dogs and Cats: A Practical Update

References and Further Reading

• Total plasma sulfide as a marker of shock severity in nonsurgical adult patients.. 2011.
• Plants with Therapeutic Potential for Ischemic Acute Kidney Injury: A Systematic Review.. 2022.
• Vascular leakage during circulatory failure: physiopathology, impact and treatments.. 2025.
• Effect of Nitric Oxide Pathway Inhibition on the Evolution of Anaphylactic Shock in Animal Models: A Systematic Review.. 2022.
• The role of hypovolemic stress in the production of fat embolism in rabbits. 2. Changes in arterial blood gas levels and static compliance.. 1976.
• RECOVER Initiative Veterinary CPR Guidelines. Veterinary Emergency and Critical Care Society.
• AAHA/AAFP Fluid Therapy Guidelines for Dogs and Cats. AAHA.
• MSD Veterinary Manual, Professional Edition. MSD Veterinary Manual.
• American Veterinary Medical Association Practice Resources. American Veterinary Medical Association.

Related Articles

• Veterinary Shock: Compensatory Mechanisms and Progression
• Veterinary Septic Shock: Recognition and Early Management
• Veterinary Shock: Fluid Resuscitation Strategies
• Veterinary Blood Transfusion: Blood Types and Crossmatching
• Veterinary Plasma Transfusion: Indications and Administration

This article is educational professional reference material for veterinary audiences. It is not a substitute for veterinary diagnosis, individual clinical judgment, current product labeling, or applicable regulatory requirements.