Bacterial pneumonia laboratory findings: Difference between revisions

Jump to navigation Jump to search
m (corrected my editor hyperlink)
No edit summary
Line 4: Line 4:


==Overview==
==Overview==
Patients infected with [[bacterial pneumonia]] present with a high [[leukocyte]] count as well as elevated inflammatory [[biomarkers]]. including [[Erythrocyte sedimentation rate|ESR]] and [[C reactive protein|C-RP]]. [[Red blood cell]] and [[platelet]] count can also be affected presenting as [[anemia]] and [[thrombocytopenia]]. [[ABG|Arterial blood gasses]] will often show changes in [[pH]] leading to a [[respiratory acidosis]]. Other tests routinely done include [[electrolyte]] assessment, [[renal function tests]], [[pulse oximetry]], [[gram staining]] and [[Sputum culture|sputum]] samples. [[Blood cultures]] and [[PCR]] tests are sensitive tests that can provide a definitive diagnosis and aid in the selection of [[antibiotics]].  
Patients infected with [[bacterial pneumonia]] present with a high [[leukocyte]] count as well as elevated inflammatory [[biomarkers]], including [[Erythrocyte sedimentation rate|ESR]] and [[C reactive protein|C-RP]]. [[Red blood cell]] and [[platelet]] count can also be affected presenting as [[anemia]] and [[thrombocytopenia]]. [[ABG|Arterial blood gasses]] will often show changes in [[pH]] leading to a [[respiratory acidosis]]. Other tests routinely done include [[electrolyte]] assessment, [[renal function tests]], [[pulse oximetry]], [[gram staining]] and [[Sputum culture|sputum]] samples. [[Blood cultures]] and [[PCR]] tests are sensitive tests that can provide a definitive diagnosis and aid in the selection of [[antibiotics]].  


==Laboratory Findings==
==Laboratory Findings==

Revision as of 15:42, 8 April 2022

Pneumonia Main Page

Bacterial pneumonia Microchapters

Home

Patient Information

Overview

Historical Perspective

Pathophysiology

Causes

Differentiating Bacterial pneumonia from other Diseases

Epidemiology and Demographics

Risk Factors

Natural History, Complications and Prognosis

Diagnosis

History and Symptoms

Physical Examination

Laboratory Findings

Chest X Ray

CT

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Primary Prevention

Secondary Prevention

Cost-Effectiveness of Therapy

Future or Investigational Therapies

Case Studies

Case #1

Bacterial pneumonia laboratory findings On the Web

Most recent articles

cited articles

Review articles

CME Programs

Powerpoint slides

Images

American Roentgen Ray Society Images of Bacterial pneumonia laboratory findings

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on Bacterial pneumonia laboratory findings

CDC onBacterial pneumonia laboratory findings

Bacterial pneumonia laboratory findings in the news

Blogs on Bacterial pneumonia laboratory findings

to Hospitals Treating Bacterial pneumonia

Risk calculators and risk factors for Bacterial pneumonia laboratory findings

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Arooj Naz, M.B.B.S

Overview

Patients infected with bacterial pneumonia present with a high leukocyte count as well as elevated inflammatory biomarkers, including ESR and C-RP. Red blood cell and platelet count can also be affected presenting as anemia and thrombocytopenia. Arterial blood gasses will often show changes in pH leading to a respiratory acidosis. Other tests routinely done include electrolyte assessment, renal function tests, pulse oximetry, gram staining and sputum samples. Blood cultures and PCR tests are sensitive tests that can provide a definitive diagnosis and aid in the selection of antibiotics.

Laboratory Findings

[1]

CBC

  1. RBC: Anemia
  2. WBC: Significant leukocytosis (with left shift), leukopenia may present in cases of atypical pneumonia
  3. Platelets: Thrombocytopenia

Electrolytes

  • Electrolytes are particularly helpful but hyponatremia may be present in cases of Legionella

Inflammatory biomarkers

RFTs

Arterial Blood Gas

Pulse oximetry

  • < 92% indicates severe hypoxia

Blood Culture

  • Blood culture samples are necessary in diagnosing the bacterial agent responsible. Samples should be taken before administering antibiotics
  • A common practice in hospitalized patients

Gram staining

Sputum samples

  • Sputum samples should be obtained when patient presents with a productive cough
  • A common practice in hospitalized patients

Polymerase Chain Reaction

  • PCR results are very rapid and sensitive for detection of bacteria[2]

References

  1. "StatPearls". 2021. PMID 30020693.
  2. Aydemir O, Aydemir Y, Ozdemir M (2014). "The role of multiplex PCR test in identification of bacterial pathogens in lower respiratory tract infections". Pak J Med Sci. 30 (5): 1011–6. doi:10.12669/pjms.305.5098. PMC 4163223. PMID 25225517.

Template:WH Template:WS