ATI FUNDAMENTALS- VITAL SIGNS Flashcards
VITAL SIGNS
A reflection of the body’s physiological function. Includes pulse, blood pressure, respiratory rate, oxygen saturation and sometimes pain level.
HOW ARE VITAL SIGNS USED THROUGH THE PROCESS OF PROVIDING CARE
- SERVES AS BASELINE
- IDENTIFY TRENDS/PATTERNS
- GUIDES Tx AND INTERVENTIONS
- HELPS EVALUATE OUTCOMES
WHAT TYPE OF DATA ARE VITAL SIGNS
OBJECTIVE
WHEN ARE VITAL SIGNS OBTAINED
- FIRST ENCOUNTER LIKE ARRIVAL
- INSTITUTION POLICY
- AFTER SURGERY/PROCEDURE
- Q4H OR Q8H
- ADMIN OF BLOOD PRODUCTS OR MEDS
WHEN MEASURING VS, THE NURSE SHOULD FOLLOW WHAT PROCEDURES
- INFECTION CONTROL GUIDELINES
- STANDARD PRECAUTIONS
- FACILITY POLICY
- HAND HYGIENE
BLOOD PRESSURE
AMOUNT OF PRESSURE EXERTED BY THE BLOOD WITHING THE CIRCULATORY SYSTEM
HOW IS BP MEASURED AND EXPRESSED
mmHg
SYSTOLIC/DIASTOLIC
SYSTOLIC BP
MAXIMUM AMOUNT OF PRESSURE EXERTED WHEN THE HEART CONTRAACTS AND FORCES BLOOD INTO THE AORTA
DIASTOLIC BP
MINIMUM AMOUNT OF PRESSURE EXERTED WHEN THE HEART IS RELAXED
BP IS A DIRECT REFLECTION OF
CARDIAC OUTPUT
BLOOD VOLUME
BLOOD VISCOSITY
VASCULAR ELASTICITY
DEGREE OF PERIPHERAL VASCULAR RESISTANCE
CARDIAC OUTPUT
CO
AMOUNT OF BLOOD PUMPED INTO THE CIRCULATORY SYSTEM BY THE HEART WITHIN ONE MINUTE
STROKE VOLUME
SV
AMOUNT OF BLOOD EJECTED BY THE VENTRICLE DURING ONE CONTRAACTION
CARDIAC OUTPUT EQUATION
CO = SV + HR
CARDIAC FACTORS INCREASE BP
INCREASED CARDIAC OUTPUT
INCREASED STROKE VOLUME
INCREASED HEART RATE
INCREASED BLOOD VOLUME
INCREASED VISCOSITY
BLOOD VISCOSITY
THICKNESS OF THE BLOOD
ELASTICITY
ABILITY OF VESSELS TO STRETCH AND COMPRESS THEN RETURN TO ORIGINAL SHAPE
DECREASE IN ELASTICITY INCREASES WHAT
RIGIDITY OF THE VESSEL WALL
INCREASES BP
peripheral vascular resistance
The total resistance to flow of blood in the vascular bed.
CONTRACTILITY
HEART’S ABILITY TO CONTRACT EFFICIENTLY
CONTRACTILITY IS INDICATED BY
EJECTION FRICTION AND MEASURED IN THE LEFT VENTRICLE VIA AN ECHOCARDIOGRAM
EJECTION FRACTION
the percentage of blood ejected with each contraction of the ventricles
WHAT DOES A DECREASE IN CONTRACTILITY DO
DECREASE CO
DECREASE BP
USUALLY FROM DECREASE O2 AND ELECTROLYTE IMBALANCE
PRELOAD
THE AMOUNT OF BLOOD INSIDE THE VENTRICLES BEFORE THEY CONTRACT
IF PRELOAD IS DECREASED, WHAT HAPPENS
SV AND BP DECREASE