What are the limitations of the PVR Calculator?

While the PVR Calculator is highly validated, it should not replace clinical judgment. OpiCalc provides the latest evidence-based limitations for the PVR Calculator to ensure safe bedside use and optimal diagnostic accuracy.

How does the PVR Calculator compare to other Cardiovascular scores?

The PVR Calculator is a gold-standard diagnostic tool. OpiCalc provides side-by-side clinical guidance to help clinicians choose the most specific evidence-based tool for their patient's presentation.

Is the PVR Calculator free to use?

Yes. OpiCalc provides the PVR Calculator completely ad-free and optimized for mobile bedside use, ensuring you can calculate medical risk swiftly and without distraction.

EVIDENCE SYNTHESIS

Clinical Reference Hub

Curated insights • How it Works • Practical Pearls • Evidence Base

CLINICAL INSIGHT

When to Use

Diagnosis and classification of Pulmonary Hypertension (PH).
Differentiating Pre-capillary PH (High PVR) from Post-capillary PH (Normal/Low PVR).
Evaluation of right ventricular afterload.
Assessing reactivity during vasopressor challenge.

CLINICAL INSIGHT

How it Works

Formula

Units

PVR is typically expressed in Wood Units (WU). To convert to dyn·s/cm⁵, multiply by 80.

CLINICAL INSIGHT

Practical Pearls

Defining PH

Per the latest guidelines, Pulmonary Hypertension is defined by an mPAP > 20 mmHg. Pre-capillary PH is further defined by a PCWP ≤ 15 mmHg AND a PVR ≥ 2 Wood Units.

CLINICAL INSIGHT

Next Steps

Complementary Calculators

CLINICAL INSIGHT

Evidence Base

Guideline Standard

2022 ESC/ERS Guidelines for the diagnosis and treatment of pulmonary hypertension.

Humbert M, et al.Eur Heart J.2022

Clinical Evidence and Methodology

Clinical Reference Hub

When to Use

When to Use

How it Works

Formula

Units

Practical Pearls

Defining PH

Next Steps

Complementary Calculators

Evidence Base

Guideline Standard

PVR Calculator

Hemodynamic Parameters

Clinical Reference Hub

When to Use

When to Use

How it Works

Formula

Units

Practical Pearls

Defining PH

Next Steps

Complementary Calculators

Evidence Base

Guideline Standard

Clinical Evidence and Methodology

Clinical Reference Hub

When to Use

When to Use

How it Works

Formula

Units

Practical Pearls

Defining PH

Next Steps

Complementary Calculators

Evidence Base

Guideline Standard

PVR Calculator

Hemodynamic Parameters

Clinical Reference Hub

When to Use

When to Use

How it Works

Formula

Units

Practical Pearls

Defining PH

Next Steps

Complementary Calculators

Evidence Base

Guideline Standard