Cardiac Flashcards
What are the four structures of fetal circulation?
- umbilical vein, umbilical arteries
- foramen ovale
- ductus arteriosus
- ductus venosus
True or false: lungs are used in utero.
false; lungs are like deflated balloons until the newborn takes its first breath
what important thing happens when a newborn takes its first breath?
the lungs expand and all the fetal circulation structures that were used in utero should be closed or begin to close
The ductus venosus does what important job?
connects umbilical vein to inferior vena cava causing blood to bypass the liver
Which fetal circulation structure is permanently closed when the clamp is placed on the umbilical cord?
ductus venosus
what is an early sign to look for in an infant that would indicate cardiac dysfunction?
poor feeding
what are some other pediatric indicators of cardiac dysfunction?
- poor feeding: infant
- tachypnea
- tachycardia
- failure to thrive, poor weight gain
- activity intolerance: older kiddos
- developmental delays especially gross motor
- positive family history of cardiac disease
what are some common gross motor milestones that may be delayed if cardiac dysfunction is indicated?
- crawling: infant
- walking: toddler and preschool
- exercise: toddler and preschool
what are some important family history questions consider with cardiac disease/dysfunction?
- prenatal care
- delivery process (was it traumatic?)
- substance abuse
what is the key thing we’re listening for in an infant or child who we suspect has some type of cardiac dysfunction?
murmurs; however, they are hard to detect
what are some key assessments of cardiac function?
- history: prenatal and postnatal
- color
- auscultation
- pulses
- blood pressure (in all 4 extremities)
- capillary refill
- abdomen (distention)
with which cardiac condition is it imperative to check BP in all four extremities and why?
coarctation of the aorta because lower extremities will have a lower BP than upper extremities
what are some types of diagnostic testing that is done to detect cardiac issues?
- chest X Ray
- ECG
- echocardiography
- cardiac catheterization
what are some potential complications that can occur during a cardiac catheterization?
- hemorrhage (#1)
- arrhythmias
- vascular damage
- vasospasms
- thrombus
- embolus
- infection
- catheter perforation
what are some primary nursing care skills that should be done for cardiac catheterization?
- mark distal pulses before procedure
- check insertion site dressing Q 15 minutes for the first 2 hours
- monitor heart rate, vitals, and pulses Q 15 minutes initially (pt will be on tele)
- maintain affected extremity in straight, flat position
- keep the patient on bed rest (typically 6 hours)
What is the number one thing that should be monitored after a patient has a cardiac catheterization, and if this particular thing occurs what should be done?
- monitor for bleeding and arrhythmias
- oozing, swelling , check under the patient
- if bleeding occurs, apply pressure, and call for help (cardiologist)
Cardiac catheterization emergency management of bleeding from the site is to apply pressure ____ inch(es) above the insertion site.
1 inch
what are some post cardiac catheterization teaching highlights?
- for a parent of a child who recently had a cardiac catheterization should include monitoring the site
- the child should avoid strenuous exercise, but may return to school
what are the two types of cardiac defects?
- congenital
- acquired
what are the types of congenital cardiac defects?
anatomic , resulting in abnormal function
what are the causes of acquired cardiac defects?
-disease process: \+infection \+autoimmune response \+environmental factors \+familial tendencies
what are the hemodynamic characteristics and classifications of congenital heart disease? (4)
- increased pulmonary blood flow
- decreased pulmonary blood flow
- obstruction of blood flow out of the heart
- mixed blood flow
Increased pulmonary blood flow defects have left to right shunting lesions and cause what?
- increase blood volume on right side a heart
- increased pulmonary blood flow
- decrease systemic blood flow
what is 1 cause of increased pulmonary blood flow defects (left to right shunting)
- abnormal connection between two sides of the heart
- either the septum or the great vessels
what are the three types of increased pulmonary blood flow defects?
- atrial septal defect (ASD)
- ventricle septal defect (VSD)
- patent ductus arteriosus (PAD)
where does atrio septal defect occur and what are the common characteristics?
- foreman ovalle
- two times more common in females
- can be asymptomatic until dyspnea and fatigue occur on exertion
- may have a murmur
what are the common characteristics of ventricle septal defect?
- this is the most common congenital lesion
- majority of these close spontaneously
what are the characteristics of Patent ductus arteriosus?
- this is most common in pre-term infants
- acyanotic
when do we want the patent ductus arteriosus to be closed?
1 hour after birth; however, no longer than six hours after birth
what happens if the atrial septal defect is not asymptomatic or does not close on its own?
- chronic increased pulmonary blood flow leads to pulmonary vascular obstructive disease
- atrial dysrhythmias caused by atrial enlargement
- surgery or non-surgical cardiac catheterization is done to prevent pulmonary vascular obstructive disease as an adult
what are the three types of decreased pulmonary blood flow defects (right to left shunting)?
- Tetralogy of Fallot
- tricuspid atresia
- transposition of the great vessels
Decreased pulmonary blood flow defects carry _____________ blood to the body causing cyanosis.
non-oxygenated
what are the four things the categorize a defect as Tetralogy of Fallot?
- pulmonic stenosis
- right ventricular hypertrophy
- overriding aorta
- ventricular septal defect
True or false: a patient with Tetralogy of Fallot will be extremely cyanotic so giving them oxygen will help.
false; oxygen will not help because hemodynamics of this patient differ
what are common characteristics of Tetralogy of Fallot?
- most frequent cyanotic lesion
- boot shaped heart
- may need prostaglandin aid to keep PDA open
- clubbing
- cyanotic spells - Tet spells or hyper-cyanotic spells
- polycythemia (keep hydrated)
How do we treat cyanotic spells that occur in patients with Tetralogy of Fallot?
put the patient in a needed chest baby position or have the patient squat during Tet spells because this increases the blood flow to the lungs
what is a patient who has Tetralogy of Fallot most at risk for?
- clots/embolus
- seizures
- sudden death
What are the three types of obstructed defects?
- coarctation of the aorta
- aortic stenosis
- pulmonic stenosis