Community Acquired Pneumonia, A Simple Guide To The Condition, Diagnosis, Treatment And Related Conditions

This book describes Community Acquired Pneumonia, Diagnosis and Treatment and Related DiseasesCommunity-acquired pneumonia (CAP) is one of the most frequent infectious diseases and is an important cause of disease and death worldwide. Numerous other micro-organisms can produce CAP in the proper medical situation. Epidemiologic data may provide indications to the specific organism causing CAP such as:1.
The most frequent bacterial pathogen generally is S pneumoniae, even though, in some situations, including in the USA, its incidence is reducing, possibly due to vaccination.2. Underlying chronic obstructive pulmonary disease (COPD: H influenzae or M catarrhalis3. Recent influenza infection: Staphylococcus aureus or S pneumoniae4. Alcoholic patient manifesting with "currant jelly" sputum: Klebsiella pneumoniaeAlso, the atypical CAP pathogens are really frequent sources of CAP and were initially classified as atypical since they are not easily detectable on Gram stain or cultivated on bacteriologic media.
CAP is normally obtained by inhalation or aspiration of a pathogenic organism. Aspiration pneumonia is often induced by multiple micro-organisms (e.g., aerobic/anaerobic oral organisms). Typical community-acquired pneumoniaTypical bacterial pathogens that cause CAP are:1. Streptococcus pneumoniae, 2. Haemophilus influenzae, and3. Moraxella catarrhalis. With the introduction of novel diagnostic methods, viral respiratory pathogens are more often being identified as frequent causes of CAP.
The most frequent viral micro-organisms obtained from hospitalized patients with CAP are:1. Human rhinovirus and2. Influenza. Atypical community-acquired pneumoniaThe medical manifestation of "atypical" CAP is often sub-acute and often gradual. Also, patients with atypical CAP may present with more subtle pulmonary signs, non-lobar infiltrates on radiography, and numerous extra-pulmonary presentations (e.g., diarrhea, otalgia).
Atypical CAP pathogens are:1. Mycoplasma pneumoniae2. Chlamydophila ( Chlamydia) pneumoniae3. Legionella pneumophila (Legionnaires disease)4. Respiratory viruses such as:a. Influenza A and Bb. Rhinovirusc. Respiratory syncytial virusd. Human metapneumoviruse. Adenovirus 4 and 7f. Parainfluenza virusOther rare CAP pathogens are:1. Virusesa. Coxsackievirusb. Echovirusc. Coronavirus (MERS-CoV, SARS)d.
Hantaviruse. Epstein-Barr virusf. Cytomegalovirusg. Herpes simplex virush. Human herpesvirus 6i. Varicella-zoster virusj. Metapneumovirus2. Bacteriaa. Chlamydophila psittaci (psittacosis)b. Coxiella burnetii (Q fever)c. Francisella tularensis (tularemia)d. Mycobacteriae. Mycobacteria tuberculosisf. Non-tuberculous mycobacteria (uncommon)3. Endemic fungia. Histoplasma capsulatumb. Cryptococcus neoformans and neoformans gattiic.
Coccidioides immitisThe most frequent symptoms of CAP are:a. Cough that may bring up green, yellow, or bloody mucusb. Fever, which may be mild or high with chills, or severe shakingc. Shortness of breathd. Breathing and heartbeat that is faster than usuale. Sharp or stabbing chest pain that gets worse when the patient breathes in or coughf. Fatigue and loss of appetiteg. Trouble thinking clearlyh.
Excess sweating and clammy skini. Headachej. Loss of appetite, low energy, and fatiguek. Malaisel. White nail syndrome, or leukonychiaThe doctor must first determine whether the patient needs to be in the hospital. If the patient is treated in the hospital, the patient will receive:1. Fluids and antibiotics2. Oxygen therapy3. Breathi...