Vagal hypotension after percutaneous biopsy: Possible confusion with hypovolemic shock

Lr, Bigongiari; Ma, Linshaw; Fb, Stapleton; Jw, Weigel

doi:10.1007/bf02926634

Cited by 3 publications

(1 citation statement)

References 17 publications

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“…This lack of reflex tachycardia can occur after many stimuli, including contrast medium injection, anxiety, and needle insertion. 22 Recently, it was shown experimentally in dogs that a severe acute bleed (ie, 35% of blood volume) resulted in a significant decrease in total peripheral resistance, with no increase in HR. 13 It was postulated that this bradycardia may constitute a protective reflex to improve ventricular filling.…”

Section: Discussionmentioning

confidence: 99%

Effects of Blood Collection for Transfusion on Arterial Blood Pressure, Heart Rate, and PCV in Cats

Iazbik¹,

Ochoa

Westendorf³

et al. 2007

Veterinary Internal Medicne

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Background: Collection of 50 mL of blood (standard unit) in cats is a common procedure. There are several studies on the health status of donors, but to our knowledge there are no reports on the effects of blood collection on the feline donor.Hypothesis: Collection of a standard unit of blood from cats does not significantly change arterial blood pressure (BP), mean arterial pressure (MAP), systolic arterial pressure (SAP), diastolic arterial pressure (DAP), PCV, and heart rate (HR) in healthy blood donor cats.Animals: Twenty-six healthy blood donor cats (6 spayed females and 20 castrated males). Methods: An oscillometric method was used to measure MAP, SAP, DAP, and to quantify HR before and after blood collection; PCV was obtained before and immediately after blood collection.Results: Despite a significant decrease (P , .05) in all variables (ie, BP, PCV, HR) after blood collection, no adverse events were observed.Conclusions and Clinical Importance: The collection of a unit of blood for transfusion from healthy donor cats weighing more than 5 kg appears to be safe, but this procedure leads to a decrease in arterial BP, PCV, and HR.

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Section: Discussionmentioning

confidence: 99%

Effects of Blood Collection for Transfusion on Arterial Blood Pressure, Heart Rate, and PCV in Cats

Iazbik¹,

Ochoa

Westendorf³

et al. 2007

Veterinary Internal Medicne

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The non-haemorrhagic vagal response to trauma: a review of hypotensive and bradycardic responses to injury in the absence of bleeding

Woods,

Turner,

Hughes

et al. 2024

Eur J Trauma Emerg Surg

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Purpose Trauma has the potential to cause haemorrhage, tissue damage, pain, visceral manipulation and psychological distress. Each of these consequences of trauma can cause changes in autonomic outflow, which dictates a patient’s vital signs. Patients who are hypotensive and bradycardic due to a vagally mediated parasympathetic response to pain, psychological distress and visceral manipulation may be confused with those who exhibit bradycardia and hypotension following significant blood volume loss. Methods This review summarises literature that describes specific stimuli, patterns of injury and patient characteristics that are associated with a non-haemorrhagic vagal response to trauma. Results Twenty-six records described predominantly parasympathetic responses to trauma (both blunt and penetrating) and surgery (“iatrogenic trauma”). Such a non-haemorrhagic vagal response occurs following a wide variety of injury patterns. Patient age and sex are poor predictors of the likelihood of a non-haemorrhagic vagal response. The development and resolution of a non-haemorrhagic vagal response occurs over a heterogenous time period. It is unclear whether speed of onset and resolution is linked to the pattern of injury or other factors causing a predominantly parasympathetic response following non-haemorrhagic trauma. Conclusion The pattern of injury, patient demographic and speed of onset / resolution associated with the non-haemorrhagic vagal response to trauma may is heterogenous. It is therefore challenging to clinically distinguish between the hypotensive bradycardia due to hypovolaemia secondary to haemorrhage, or a parasympathetic response to trauma in the absence of bleeding.

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Effects of Blood Collection for Transfusion on Arterial Blood Pressure, Heart Rate, and PCV in Cats

Iazbik¹,

Ochoa

Westendorf³

et al. 2007

J Vet Int Med

View full text Add to dashboard Cite

show abstract

Vagal hypotension after percutaneous biopsy: Possible confusion with hypovolemic shock

Cited by 3 publications

References 17 publications

Effects of Blood Collection for Transfusion on Arterial Blood Pressure, Heart Rate, and PCV in Cats

Effects of Blood Collection for Transfusion on Arterial Blood Pressure, Heart Rate, and PCV in Cats

The non-haemorrhagic vagal response to trauma: a review of hypotensive and bradycardic responses to injury in the absence of bleeding

Effects of Blood Collection for Transfusion on Arterial Blood Pressure, Heart Rate, and PCV in Cats

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