Blood Transfusion/Antiviral Drugs Flashcards

(49 cards)

1
Q

blood transfusion therapy

A

the TRANSFUSING of WHOLE BLOOD or BLOOD COMPONENTS through IV

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2
Q

why do we utilize BT THERAPY?

A

many different reasons;
- in general – want to REPLACE LOST COMPONENTS OF THE BLOOD
ex. trama/serious injury
ex. surgical procedures
ex. illnesses - anemia, leukemia, kidney dx

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3
Q

what are some BLOOD TRANSFUSION PRODUCTS?

A
  • WHOLE BLOOD
  • RBC/WBC/PLATELETS
  • PLASMA
  • ALBUMIN
  • GAMMA GLOBULIN
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4
Q

standard transfusion

A

transfusion with a compatible blood donor

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5
Q

autologous transfusions

A

where BLOOD IS COLLECTED for ANTICIPATION of FUTURE TRANSFUSIONS
- designated use only for the sole client
- can donate up to 6 WEEKS PRIOR to surgery

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6
Q

intraoperative blood salvage

A

saving of LOST STERILE BLOOD during a procedure by a filter machine - able to transfuse during operation or post-op

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7
Q

what are the TWO BIOMARKERS that are used to ensure safety during a BLOOD TRANSFUSION?

A
  • ABO FACTOR
  • RhD FACTOR

*we can CROSSMATCH for ABO COMPATIBILITY, but NOT for ANTIGENS

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8
Q

Rh Factor

A
  • can be either PRESENT or ABSENT
  • if Rh-NEG; means patient is BORN WITHOUT the Rh ANTIGEN
  • can only develop ANTIBODIES once SENSITIZIED
  • if in contact with RH+ BLOOD; can cause RXN.
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9
Q

what are the BLOOD TYPES?

A

A+/A-
B+/B-
AB+/AB-
O+/O-

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10
Q

abo factor

A

classification of BLOOD TYPES that are classifed by the types of ANTIGENS within the RBC and ANTIBODIES within the plasma

antigens - triggers an IMMUNE response when FOREIGN

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11
Q

group A

A
  • has the A antigen
  • plasma; anti-B antibody
    will attack B antigen
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12
Q

group B

A
  • has the B antigen
  • plasma; anti-A antibody
    will attack A antigen
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13
Q

group AB

A
  • has both A & B antigen
  • plasma; DOES NOT have any anti-A or B antibodies
    will not attack anyone!
    is considered the UNIVERSAL RECIPIENT (AB+)
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14
Q

group O

A
  • does NOT have any A or B antigens
  • but DOES HAVE both ANTI-A and ANTI-B ANTIBODIES

considered the UNIVERSAL DONOR due to not having any ANTIGENS, however, can only receive O type BLOOD due to having both antibodies

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15
Q

what must be done BEFORE administering BLOOD?

A
  • always make sure YOU HAVE THE CORRECT PATIENT, BLOOD, and ORDER
  • recording BASELINE VITAL SIGNS; assessing needle GAUGE (around 18-19) **checking if the patient is afebrile
  • need to only use NS with BLOOD / proper Y-TUBING
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16
Q

how long do you have to START THE BLOOD TRANSFUSION?

A
  • must give blood within 30 MINUTES OF RECEIVING
  • must have a 2-RN check ready to proceed
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17
Q

what is the TYPICAL STARTING RATE of a BLOOD TRANSFUSION?

A
  • around 2 mL/min (120 mL/hr) for the FIRST 15 MINUTES - must STAY BY BEDSIDE
  • rate is increased after
  • blood bag; around 250-300 cc
  • can only TRANSFUSE NO MORE THAN 4 HOURS
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18
Q

when do we check ROUTINE VITAL SIGNS during BLOOD TRANSFUSIONS?

A
  • 5 minutes from start
  • 15 min mark
  • 30 min mark
  • 1 hour until end
  • 1 hour AFTER
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19
Q

what do we NEVER administer with BLOOD?

A
  • dextrose **hemolysis
  • medications
  • in general do not want to mix anything with blood; only allowed NS for priming etc…
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20
Q

allergic reaction

A
  • flushing, SOB, hives, pruritus
  • sensitivity to the plasma protein antibody
21
Q

febrile or non-hemolyic reaction

A

causes sudden chills, fever, headache, anxiety
- greater hypersensitivity to donor white cells or platelets
- often onset within 2 hours of starting

22
Q

hemolytic reaction

A

the INFUSION OF INCOMPATIBLE BLOOD PRODUCTS
- chills, tachycardia, hypotension, flushing, hematuria
- can be LIFE-THREATENING , can cause DIC (disseminated intravascular coagulation)

23
Q

what happens if there is a BLOOD TRANSFUSION REACTION?

A
  • Always STOP THE TRANSFUSION FIRST!!
  • administer IV LINE - NS
  • observe S & S; can place in fowlers/O2 therapy is SOB
  • emergency drugs - antihistamines, fluids, steroids
  • MUST SAVE EVERYTHING! - contact provider ASAP
24
Q

describe VIRUSES

A
  • there are particles that work by INFECTING and REPLICATING INSIDE OF THE CELLS
  • they can only do so when INSIDE OF THE CELL
25
virion
type of a MATURE VIRUS that has a GENOME + CAPSID + ENVELOPE the CAPSID - protects and transports viral genetic information; RNA
26
what are the FOUR MAIN ENTRY ROUTES for viruses?
1. INHALATION - RESP 2. INGESTION - GI 3. TRANSPLACENTALLY - MOM - INFANT 4. INOCULATION - SKIN/MM
27
inoculation route - viruses
- SEXUAL CONTACT - BLOOD - NEEDLE SHARING - ORGAN TRANSPLANTS - BITES
28
describe ANTIVIRAL DRUGS
work by either KILLING or SUPPRESSING VIRUSES by destroying VIRIONS or INHIBITING their skill of replicating - most of these drugs are SYNTHETIC COMPOUNDS - mostly INHIBIT VIRAL REPLICATION vs. direct destruction - can interfere with VIRAL NUCLEIC ACID SYNTHESIS - why? - similar to viruses, they only work by ENTERING INTO A HOST CELL (must enter by FUSION)
29
antiviral (NON-HIV) drugs; MOA, indications etc...?
MOA; work by BLOCKING POLYMERASE ENZYME - enzyme is important for the SYNTHESIS OF VIRAL GENOMES; causes IMPAIRED VIRAL REPLICATION indications; treatment for HSV, VARICELLA-ZOSTER, cytomegalovirus CMV, HEP B & C contraindications; severe allergies
30
HIV
virus affecting the body's IMMUNE SYSTEM; destroys WBC (CD4/T cells) - can develop AIDS; risk for serious infections or cancer **known as END-STAGE HIV INFECTION
31
what are the STAGES OF HIV
STAGE I - acute HIV INFECTION - chills, fevers, muscle aches STAGE II - CHRONIC HIV INFECTION - treatment/drug therapy, blood exams STAGE III - AIDS increase of opportunistic infections; continued decrease of WBC cells
32
what are our ANTIVIRAL (NON-HIV) DRUGS? (8)
- AMANTADINE* - RIMANTADINE - ACYCLOVIR* - ENTECAVIR - GANCICLOVIR - OSELTAMIVIR/ZANAMIVIR - RIBAVIRIN - SOFOSBUVIR
33
amantadine
- only used against INFLUENZA A VIRUSES ; also used for PARKINSONS - can be used in CHILDREN - only used ORALLY - can cause DRY MOUTH, URINARY RETENTION, or CONSTIPATION
34
rimantadine
- has a LONGER HALF-LIFE vs. amantadine - has LESS ADVERSE EFFECTS - similar to AMANTADINE in indications - only used ORALLY
35
acyclovir
- used to SUPPRESS REPLICATION of HSV 1 & 2 & VSV - can be used orally, topically, or through injection (want to infuse slowly through IV--over 1 hour) - IS SAFE DURING PREGNANCY** - delays synthesis of VIRAL DNA adverse effects; can cause NEUROLOGIC TOXICITY--want to lower doses for pt. in dialysis
36
entecavir
- treats HEP B INFECTIONS - is given ORALLY; doses 0.5 - 1 mg/day for min. of 12 months - does have BLACK BOX WARNINGS; can cause SEVERE EXACERBATIONS - HEP B, LACTIC ACIDOSIS, HEPATOMEGALY, HIV RESISTANCE adverse effects; - INCREASED LIVER FUNCTION TESTS - headaches, rashes, hematuria, increased creatinine
37
ganciclovir
- treats CMV INFECTIONS and PREVENTION of CMV disease in high-risk pts. (who are getting organ transplants) - given IV or ORAL - must assess for BONE MARROW SUPPRESSION - dose-limiting toxicity
38
oseltamivir/zanamivir
- are NEURAMINIDASE INHIBITORS - enables VIRIONS to ESCAPE from the infected cells/spread throughout body indications - INFLUENZA VIRUS TYPE A and B adverse effects; - N/V, diarrhea, nausea, sinusitis *oral form (oselt) / *powder form (zanamivir)
39
ribavirin
MOA; interferes with RNA & DNA SYNTHESIS indications; used to treat HEP C or SMV **is a CATEGORY X DRUG - TETATOGENIC
40
sofosbuvir
- is the FIRST-IN-CLASS RNA POLYMERASE INHIBITOR - helps to treat CHRONIC HEP C **often combined with RIBAVIRIN interactions - STRONG CYP3A4 INDUCERS - RIFAMPIN - ST. JOHN's WORT **PREGNANCY CATEGORY X DRUG
41
describe HIV TRANSMISSION
- needs OPEN SURFACE CONTACT and is spread through BODY FLUIDS that contain the VIRUS - ex. BLOOD, SEMEN, VAGINAL FLUID, BREAST MILK SUBTYPES; - HIV-1**more common - HIV-2
42
ANTI-VIRAL (HIV) DRUGS; MOA, indications etc...
MOA; work by SUPPRESSING the VIRAL REPLICATION PROCESS indications; active HIV INFECTION or some to treat HEP B adverse effects; - bone demineralization - osteoporosis (reduced calcium)
43
what are our HIV DRUGS? (10)
- ENFUVIRTIDE - INDINAVIR - NEVIRAPINE - RALTEGRAVIR - TENOFOVIR - ZIDOVUDINE - MARAVIROC (SELZENTRY) - RALTEGRAVIR - TENOFOVIR ALAFENAMIDE (VEMLIDY) - ZIDOVUDINE (RETROVIR)
44
enfuvirtide
- type of FUSION INHIBITOR; suppresses fusion process & replication - is quite expensive/inconvenient dosing
45
indinavir
- type of PROTEASE INHIBITOR - can cause KIDNEY STONES in around 4% of PATIENTS - recommendation; increased LIQUIDS
46
nevirapine
- type of NON-NUCLEOTIDE REVERSE TRANSCRIPTASE INHIBITOR **important enzyme that allows viral rna to change to DNA - often is WELL TOLERATED - only taken ORALLY
47
raltegravir
- stops HIV REPLICATION; prevents insertion of VIRAL DNA into the human cell -- type of INTEGRASE INHIBITOR indications; - patients with MULTIDRUG RESISTANCE/ACTIVE REPLICATION adverse effects; - myopathy - immune reconstitution syndrome contraindications; - LACTATION, PRE-TERM NEONATES etc...
48
tenofovir
indicated for HIV and HEP B--allows to SLOW ITS PROGRESSION by preventing INSERTION OF VIRAL DNA - is a NRTI (NUCLEOTIDE REVERSE TRANSCRIPTASE INHIBITOR) - has been having INCREASED RESISTANCE adv. effects; - LIVER/KIDNEY FXN, LACTIC ACIDOSIS, TACHYC. DARK URINE
49
zidovudine
the first anti-viral drug for HIV - not typically used now; can cause severe adverse reactions - was often given to INFECTED PREGNANT WOMEN/NEWBORN BABIES - adverse effect; BONE MARROW SUPPRESSION