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What is normal LV flow rate?
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The normal left ventricular (LV) flow rate, often referring to the rate of blood ejected from the left ventricle during each heartbeat, is closely tied to cardiac output and stroke volume.

1. **Cardiac Output (CO)**: This is the total amount of blood the heart pumps per minute. A typical normal range for cardiac output in an adult is around **4-8 liters per minute** at rest.

2. **Stroke Volume (SV)**: The amount of blood ejected from the left ventricle with each contraction. A typical stroke volume is **60-100 mL per beat**.

To estimate LV flow rate, you'd typically focus on the **stroke volume** and **heart rate**:

- **Flow rate** (in terms of liters per minute) = **stroke volume** (in liters) × **heart rate** (beats per minute)

For example, if someone has a stroke volume of 70 mL and a heart rate of 70 beats per minute:

- Flow rate = 70 mL × 70 bpm = 4900 mL/min or **4.9 L/min**

This is an approximate normal LV flow rate in a healthy adult at rest.

If you're asking about specific **hemodynamic measurements** (like through echocardiography or other clinical assessments), the normal range for flow velocity across the left ventricular outflow tract (LVOT) can be around **0.6 to 1.0 m/s**, but this depends on the method used and the clinical context.

Do you mean the LV outflow velocity or cardiac output in your question?
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