Vital Signs

Vital Signs. Nursing 125. Vital Signs. Temperature, pulse, respiration, blood pressure (B/P) & oxygen saturation are the most frequent measurements taken by HCP.

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Vital Signs

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  1. Vital Signs Nursing 125
  2. Vital Signs • Temperature, pulse, respiration, blood pressure (B/P) & oxygen saturation are the most frequent measurements taken by HCP. • Because of the importance of these measurements they are referred to as Vital Signs. They are important indicators of the body’s response to physical, environmental, and psychological stressors.
  3. Vital Signs • VS may reveal sudden changes in a client’s condition in addition to changes that occur progressively over time. A baseline set of VS are important to identify changes in the patient’s condition. • VS are part of a routine physical assessment and are not assessed in isolation. Other factors such as physical signs & symptoms are also considered. • Important Consideration: • A client’s normal range of vital signs may differ from the standard range.
  4. When to take vital signs • On a client’s admission • According to the physician’s order or the institution’s policy or standard of practice • When assessing the client during home health visit • Before & after a surgical or invasive diagnostic procedure • Before & after the administration of meds or therapy that affect cardiovascular, respiratory & temperature control functions. • When the client’s general physical condition changes LOC, pain • Before, after & during nursing interventions influencing vital signs • When client reports symptoms of physical distress
  5. Body Temperature • Core temperature – temperature of the body tissues, is controlled by the hypothalamus (control center in the brain) – maintained within a narrow range. • Skin temperature rises & falls in response to environmental conditions & depends on bld flow to skin & amt. of heat lost to external environment • The body’s tissues & cells function best between the range from 36 deg C to 38 deg C • Temperature is lowest in the morning, highest during the evening.
  6. Thermometers – 3 types • Glass mercury – mercury expands or contracts in response to heat. (just recently non mercury) • Electronic – heat sensitive probe, (reads in seconds) there is a probe for oral/axillary use (red) & a probe for rectal use (blue). There are disposable plastic cover for each use. Relies on battery power – return to charging unit after use. • Infrared Tympanic (Ear) – sensor probe shaped like an otoscope in external opening of ear canal. Ear canal must be sealed & probe sensor aimed at tympanic membrane – ret’n to charging unit after use.
  7. Sites (P&P p. 216)
  8. Assessing Radial Pulse • Left ventricle contracts causing a wave of bld to surge through arteries – called a pulse. Felt by palpating artery lightly against underlying bone or muscle. • Carotid, brachial, radial, femoral, popliteal, posterior tibial, dorsalis pedis P&P p. 226 • Assess: rate, rhythm, strength – can assess by using palpation & auscultation. • Pulse deficit – the difference between the radial pulse and the apical pulse – indicates a decrease in peripheral perfusion from some heart conditions ie. Atrial fibrillation.
  9. Procedure for Assessing Pulses • Peripheral – place 2nd, 3rd & 4th fingers lightly on skin where an artery passes over an underlying bone. Do not use your thumb (feel pulsations of your own radial artery). Count 30 seconds X 2, if irregular – count radial for 1 min. and then apically for full minute. • Apical – beat of the heart at it’s apex or PMI (point of maximum impulse) – 5th intercostal space, midclavicular line, just below lt. nipple – listen for a full minute “Lub-Dub” • Lub – close of atrioventricular (AV) values – tricuspid & mitral valves • Dub – close of semilunar valves – aortic & pulmonic valves
  10. Assess: rate, rhythm, strength & tension • Rate – N – 60-100, average 80 bpm • Tachycardia – greater than 100 bpm • Bradycardia – less than 60 bpm • Rhythm – the pattern of the beats (regular or irregular) • Strength or size – or amplitude, the volume of bld pushed against the wall of an artery during the ventricular contraction • weak or thready (lacks fullness) • Full, bounding (volume higher than normal) • Imperceptible (cannot be felt or heard) 0----------------- 1+ -----------------2+--------------- 3+ ----------------4+ Absent Weak NORMAL Full Bounding
  11. Normal Heart Rate
  12. Assess (cont.) • Tension – or elasticity, the compressibility of the arterial wall, is pulse obliterated by slight pressure (low tension or soft) • Stethoscope • Diaphragm – high pitched sounds, bowel, lung & heart sounds – tight seal • Bell – low pitched sounds, heart & vascular sounds, apply bell lightly (hint think of Bell with the “L” for Low)
  13. Respirations • Assess by observing rate, rhythm & depth • Inspiration – inhalation (breathing in) • Expiration – exhalation (breathing out) • I&E is automatic & controlled by the medulla oblongata (respiratory center of brain) • Normal breathing is active & passive • Women breathe thoracically, while men & young children breathe diaphramatically ***usually • Asses after taking pulse, while still holding hand, so pt is unaware you are counting respiratons
  14. Assessing Respiration
  15. Blood Pressure • Force exerted by the bld against vessel walls. Pressure of bld within the arteries of the body – lt. ventricle contracts – bld is forced out into the aorta to the lg arteries, smaller arteries & capillaries • Systolic- force exerted against the arterial wall as lt. ventricle contracts & pumps bld into the aorta – max. pressure exerted on vessel wall. • Diastolic – arterial pressure during ventricular relaxation, when the heart is filling, minimum pressure in arteries. • Factors affecting B/P • lower during sleep • Lower with bld loss • Position changes B/P • Anything causing vessels to dilate or constrict - medications
  16. B/P (cont.) P&P p. 240 see table 9-3 • Measured in mmHg – millimeters of mercury • Normal range • syst 110-140 dias 60-90 • Hypertensive - >160, >90 • Hypotensive
  17. B/P (cont.) • Cuff – inflatable rubber bladder, tube connects to the manometer, another to the bulb, important to have correct cuff size (judge by circumference of the arm not age) • Support arm at heart level, palm turned upward - above heart causes false low reading • Cuff too wide – false low reading • Cuff too narrow – false high reading • Cuff too loose – false high reading • Listen for Korotkoff sounds – series of sounds created as bld flows through an artery after it has been occluded with a cuff then cuff pressure is gradually released. P&P p. 240. • Do not take B/P in • Arm with cast • Arm with arteriovenous (AV) fistula • Arm on the side of a mastectomy i.e. rt mastectomy, rt arm
  18. Procedure – B/P
  19. Procedure (cont.)
  20. B/P Lower Extremity • Best position prone – if not – supine with knee slightly flexed, locate popliteal artery (back of knee). • Large cuff 1 inch above artery, same procedure as arm. Systolic pressure in legs maybe 10-40 mm hg higher • If unable to palpate a pulse – you may use a doppler stethoscope
  21. Oxygen Saturation (Pulse Oximetry) • Non-invasive measurement of oxygen saturation • Calculates SpO2 (pulse oxygen saturation) reliable estimate of arterial oxygen saturation • Probes – finger, ear, nose, toe • Patient with PVD or Raynauds syndrome – difficult to obtain. • Normal – 90-100% • Remove nail polish • Wait until oximeter readout reaches constant value & pulse display reaches full strength • During continuous pulse oximetry monitoring – inspect skin under the probe routinely for skin integrity – rotate probe.
  22. Procedure – Vital Signs
  23. Vital Signs (cont.)

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