NAVLE Cardiovascular

Canine Systemic Hypertension – NAVLE Study Guide

Systemic hypertension refers to sustained elevations in systemic arterial blood pressure. In dogs, systolic blood pressure consistently greater than 140 mmHg or diastolic pressure greater than 90 mmHg is considered elevated.

Overview and Clinical Importance

Systemic hypertension refers to sustained elevations in systemic arterial blood pressure. In dogs, systolic blood pressure consistently greater than 140 mmHg or diastolic pressure greater than 90 mmHg is considered elevated. However, the ACVIM Consensus Guidelines recommend that treatment be initiated when systolic pressure persistently exceeds 160 mmHg, as this level is associated with moderate-to-high risk for target organ damage (TOD).

Unlike in cats where hypertension is commonly recognized, canine hypertension has historically been underdiagnosed. However, it is a clinically significant condition that can cause serious complications affecting the eyes, kidneys, heart, and brain. Understanding the diagnosis, underlying causes, and treatment of canine hypertension is essential for NAVLE success.

High-YieldIn dogs, hypertension is almost always SECONDARY to an underlying disease. Primary (essential/idiopathic) hypertension is rare in dogs, unlike in humans. Always search for an underlying cause!
Category Systolic BP (mmHg) Risk of TOD Action
Normotensive Less than 140 Minimal Routine monitoring
Pre-hypertensive 140-159 Low Monitor every 3-6 months
Hypertensive 160-179 Moderate Confirm over 1-2 weeks; treat if persistent
Severely Hypertensive 180 or greater High Immediate treatment recommended

Blood Pressure Classification

The ACVIM Consensus Guidelines (2018) classify blood pressure based on the risk of developing target organ damage (TOD). Treatment decisions should consider both the blood pressure level and the presence or absence of TOD.

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