PSI Calculator Ultimate Best Tool – BilalMD

The PSI Calculator helps assess pneumonia severity using clinical factors to guide outpatient, hospital, or ICU care decisions.

PSI Calculator Pneumonia Severity Index

Demographics

Age Sex Male Female

Nursing home resident

Comorbidities

Neoplastic disease Liver disease Congestive heart failure Cerebrovascular disease Renal disease

Physical exam

Altered mental status Respiratory rate ≥30 Systolic BP <90 mmHg Temperature <35°C or ≥40°C Pulse ≥125 bpm

Labs / Radiology

Arterial pH <7.35 BUN ≥30 mg/dL Sodium <130 mmol/L Glucose ≥250 mg/dL Hematocrit <30% PaO₂ <60 mmHg Pleural effusion

Calculate Reset

Result

Total PSI points

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Risk class

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Typical 30-day mortality

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Site-of-care note

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Sources

1. Fine MJ, et al. N Engl J Med 1997 — original PSI derivation/validation.
2. 2019 ATS/IDSA CAP guideline — PSI preferred for site-of-care.
3. MSD Manual — PSI point table & class thresholds.
4. MDN docs on form submit defaults & preventing reload.

Medical disclaimer: For educational use by healthcare professionals. PSI supports site-of-care decisions but does not replace clinician judgment or local protocols.

PSI Calculator — Pneumonia Severity Index

Quickly assess the severity of community-acquired pneumonia (CAP) with our free PSI Calculator. This tool helps you calculate PSI (Pneumonia Severity Index) based on clinical factors, guiding decisions for outpatient treatment, hospitalization, or ICU care.

How to Use the PSI Calculator?

• Enter the patient's age, vital signs, lab values, and comorbidities.
• Click "Calculate PSI" to get the score and risk class.
• Use the score to guide hospitalization decisions.

PSI Score Interpretation

PSI Class	Risk Level	Recommended Action
I - II	Low Risk	Outpatient care
III	Moderate	Brief hospitalization or outpatient
IV - V	High Risk	Hospitalization, consider ICU

What Is the PSI Pneumonia Severity Index Calculator?

• Explain that it's a clinical tool validated in studies.
• Mention that it's used specifically for community-acquired pneumonia (CAP).
• Different from CURB-65, but both help in risk stratification.

CURB-65 vs PSI Calculator: What’s the Difference?

• CURB-65 is simpler, with fewer inputs.
• PSI often preferred when labs are available.

How do you calculate PSI?

You can calculate PSI easily by entering clinical details into our PSI Calculator.

What is the PSI score for pneumonia?

The PSI score is a tool used to assess the risk of mortality in patients with community-acquired pneumonia (CAP). It helps guide clinical decisions regarding the need for hospitalization or ICU care based on a patient's severity risk classification.

How is PSI calculated?

PSI is calculated by assigning points based on a patient's age, comorbidities, vital signs, lab results, and mental status, then summing the total to determine pneumonia severity risk.

What is the PSI score interpretation for pneumonia patients?

The PSI score categorizes patients into five risk classes (I to V), where lower classes suggest outpatient care and higher classes recommend hospitalization or intensive care.

What is the CURB-65 score and how does it compare to the PSI score?

CURB-65 is a simpler pneumonia severity tool based on confusion, urea, respiratory rate, blood pressure, and age ≥65; PSI is more detailed but offers greater accuracy by including comorbidities and lab data.

What does the PSI score measure and why is it important?

The PSI score measures the risk of mortality in community-acquired pneumonia patients, helping guide decisions between outpatient treatment and hospital admission.

How is the PSI score used in pneumonia management?

The PSI score helps clinicians stratify pneumonia patients based on severity, ensuring that they receive the appropriate treatment in the correct setting (e.g., outpatient, inpatient, or ICU). This stratification improves patient outcomes by guiding timely and appropriate interventions.