Acute Chronic HBV ALT 70 Aminoglycoside Extended Interval Antibiotic Duration Guide Antibiotic PKPD Optimisation APACHE II Sepsis Context ATS IDSA CAP Severity Bacteremia Risk Shapiro Bacterial Meningitis Score C difficile Severity Recurrence CAUTI Criteria CD4 OI Risk Centor Criteria CISNE Score Congenital Syphilis Risk CPIS CSF Interpretation CURB-65 De Escalation Eligibility Dengue NS1 IgM Dengue Severity WHO Diabetic Foot Infection DRIP Score Duke Criteria Embolic Risk IE Eron Classification ESC 2023 IE Risk Fever PAIN GCCT Treatment GCS CNS Infection HBV Post Exposure Prophylaxis HBV Reactivation Risk HBV Treatment Eligibility HCV DAA Eligibility HCV Fibrosis APRI HCV Fibrosis FIB4 HIV Drug Interaction Checker HIV Pre Test Probability IGRA Interpretation Kocher Criteria Legionella Predictor Lemierre Risk Flags Leptospirosis Faine Score Lights Criteria LRINEC Score LTBI Treatment Eligibility Malaria Pre Test Probability Malaria Severity WHO MASCC Score McIsaac Score MDR TB Suspicion Measles Criteria Modified Duke Criteria MSIS Criteria Needlestick Exposure Risk nPEP Eligibility Occupational HIV PEP OI Prophylaxis Restart ORENUC Classification PAGE B Score Parapneumonic Effusion Complexity Parapneumonic PH Management PCP Prophylaxis PENS Score Peritonsillar Abscess Score PID Severity Classification Pitt Bacteremia Score PrEP Candidacy Procalcitonin Stop Rule PSI PORT Score Renal Dose Adjustment Returning Traveller Fever Rhinosinusitis EPOS SBP Criteria SCORTEN Sepsis 3 Criteria Septic Shock Criteria SMART COP STI Syndromic Tool Syphilis Interpretation TB IRIS Risk TB Regimen Calculator TB Risk Score TST Interpretation UTI Risk VACS Index Vancomycin AUC Dosing VZIG Eligibility

PSI PORT Score

PSI / PORT Score: Comprehensive risk stratification for CAP. Validates the safety of outpatient therapy for low-risk groups.

Section 1 of 3: Demographics

Patient Age

Guidelines & Evidence

Verified

Last Review: 2026-07-17

When to Use

When to Use

Risk stratification for patients with community-acquired pneumonia (CAP)

Determining the appropriate level of care (Outpatient vs. Ward vs. ICU)

Identifying low-risk patients who can be safely treated at home

Complementary tool to CURB-65 for detailed metabolic and comorbid assessment

How it Works

Risk Groups & Recommendations

Class I–II (<70 pts)	Outpatient treatment. Minimal mortality risk.
Class III (71–90 pts)	Observation or brief hospital stay. Mortality risk ~0.9%.
Class IV (91–130 pts)	Inpatient treatment. Mortality risk ~9%.
Class V (>130 pts)	Inpatient treatment; consider ICU. Mortality risk ~27%.

Variables

Demographics: Age, Sex, Nursing home resident

Comorbidities: Neoplasia, Liver disease, CHF, Cerebrovascular disease, Renal disease

Exam: Altered mental status, RR ≥30, SBP <90, Temp <35 or ≥40, HR ≥125

Labs/Imaging: pH <7.35, BUN ≥30, Sodium <130, Glucose ≥250, Hematocrit <30, pO2 <60, Pleural effusion

Last Comprehensive Review: 2026-07-17