PATHOPHYSIOLOGY INTRODUCTORY
CONCEPTS AD CLINICAL
PERSPECTIVES F.A. DAVIS (EXAM 2)
Pathogen - ANS specific microorganism capable of causing infection
Host - ANS Colonized by a pathogen
Infection - ANS Invasion colonization or multiplication of a pathogen.
Septicemia - ANS Infection of the blood stream
Can be caused by inserting a IV cath with out properly cleaning the skin
Immunocompetence - ANS The individuals ability to protect oneself from infectious agents
because of a strong immune system
Immunosuppressed - ANS A weak immune system is at risk of common microorganism
causing a opportunistic infection
Hospital Acquired Condition - ANS Hospitals harbor a wide variety of bacteria that can cause
nosocomial infections
Staphylococcus Aureus - ANS Skin and wound infections like; impetigo, pneumonia,
septicemia
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Other infections on the skin surface, S. epidermidis, S. aureus, corynebacterium
Streptococcus pyogene - ANS GABHS group A Beta hemolytic streptococcus
Pharyngitis, impetigo, URI, rheumatic fever (rheumatic heart disease/heart murmur), scarlet
fever, glomerulonephritis, TSS, necrotizing fascitis
Streptococcus Pneumoniae - ANS Community acquired pneumonia
Institutionalized patients
Influenza is a common precursor
Pneumonia: Rigors, Crackles (hair between the fingers) lower lung
#1 mortality in NH
Legionnaires Disease - ANS air conditioning systems
Pseudamonas areuginosa - ANS UTI 4th most commonly isolated nosocomial infection,
accounting for 10% all hospital acquired infections
Escherichia coli - ANS UTI, wound infection, pneumonia, septicemia
lower UTIs can be found in sexual active women, were males with BPM cause urinary stasis. UTI
with a fever should rule our pyelonephritis
Clostridium Difficile - ANS Intestinal mucosa disruption
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
CONCEPTS AD CLINICAL
PERSPECTIVES F.A. DAVIS (EXAM 2)
Pathogen - ANS specific microorganism capable of causing infection
Host - ANS Colonized by a pathogen
Infection - ANS Invasion colonization or multiplication of a pathogen.
Septicemia - ANS Infection of the blood stream
Can be caused by inserting a IV cath with out properly cleaning the skin
Immunocompetence - ANS The individuals ability to protect oneself from infectious agents
because of a strong immune system
Immunosuppressed - ANS A weak immune system is at risk of common microorganism
causing a opportunistic infection
Hospital Acquired Condition - ANS Hospitals harbor a wide variety of bacteria that can cause
nosocomial infections
Staphylococcus Aureus - ANS Skin and wound infections like; impetigo, pneumonia,
septicemia
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
, Other infections on the skin surface, S. epidermidis, S. aureus, corynebacterium
Streptococcus pyogene - ANS GABHS group A Beta hemolytic streptococcus
Pharyngitis, impetigo, URI, rheumatic fever (rheumatic heart disease/heart murmur), scarlet
fever, glomerulonephritis, TSS, necrotizing fascitis
Streptococcus Pneumoniae - ANS Community acquired pneumonia
Institutionalized patients
Influenza is a common precursor
Pneumonia: Rigors, Crackles (hair between the fingers) lower lung
#1 mortality in NH
Legionnaires Disease - ANS air conditioning systems
Pseudamonas areuginosa - ANS UTI 4th most commonly isolated nosocomial infection,
accounting for 10% all hospital acquired infections
Escherichia coli - ANS UTI, wound infection, pneumonia, septicemia
lower UTIs can be found in sexual active women, were males with BPM cause urinary stasis. UTI
with a fever should rule our pyelonephritis
Clostridium Difficile - ANS Intestinal mucosa disruption
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED.
