CIRCULATORY SYSTEM FOR NURSES CLASS 07

1. CLASS -7
• SYSTEMIC CIRCULATION—VENOUS SYSTEM

22. CIRCULATION

28. SHOCK
• FAILURE OF CARDIOVASCULAR SYSTEM TO
DELIVER ENOUGH OXYGEN & NUTRIENTS TO
MEET CELLULAR & METABOLIC NEEDS –LEADING
TO LACTIC ACIDOSIS & CELL DEATH
• RESPONSE TO SHOCK—RAA SYSTEM
ACTIVATION;INCREASE IN ADH ;SYMPATHETIC
STIMULATION
• FEATURES—LOW BP,TACHYCARDIA,WEAKNESS,
COLD CLAMMY SKIN ,MENTAL CONFUSION ,
NAUSEA-VOMITING,LOW URINE OUTPUT

29. SHOCK -CAUSES
• HYPOVOLEMIC SHOCK—20% Reduction in fluid volume
in body, eg diarrhea, vomiting bleeding burn
• CARDIOGENIC SHOCK—poor heart function following
CCF ,MI
• SEPTIC SHOCK –Due to circulating toxin resulting in
vasodilatation-poor contractility of heart,or massive
inflammatory reaction
• NEUROGENIC SHOCK—INCREASED PARASYMPATHETIC
ACTIVITY—vasovagalshock
• ANAPHYLACTIC SHOCK -Vascular dilatation &shock

30. EDEMA
• Excess fluid accumulation in tissues
• Superficial /Deep
• Due to
– Increased hydrostatic pressure
– Decreased osmotic pressure
– Impaired lymphatic drainage
– Increased permeability with inflammation
• Ascitis , pleural effusion ,pericardial effusion
• Superficial dependent edema