Other cardiac pathologies Flashcards

1
Q

bradycardia

A

<50 bpm

SA node injury

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2
Q

Tachycardia

A

> 100 bpm

  • fear, p!, emotion, exertion
  • fever, CHF, infection, anemia, hemorrhage, hyperthyroidism
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3
Q

myocarditis

A
  • inflammation of myocardium
  • usually caused by viral infection
  • can lead to HF, dilated cardiomyopathy, arrhythmias, sudden death
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4
Q

Causes for Diabetic Heart Disease

A
  1. metabolic effects due to FFA and insulin resistance
  2. myocardial fibrosis and ECM changes
  3. autonomic dysfunction reduced HRR
  4. reduced perfusion due to small vessel disease
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5
Q

Pericarditis

A
  • swelling/irritation of pericardium
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6
Q

Pericarditis causes

A

may be caused by viral infection or MI, but often idiopathic

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7
Q

Pericarditis is often associated with

A
  • autoimmune diseases (RA, SLE)
  • radiation therapy
  • comorbidity with renal failure
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8
Q

Pericarditis treatment

A

focus on symptom management

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9
Q

Pericarditis signs/symptoms

A
  • sharp chest pain (pleural membrane rubbing)
  • pericardial rub sound
  • pleuritic chest p! worse in supine, inhaling deeply, or cough. relieved by leaning forward
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10
Q

Constrictive Pericarditis

A
  • fibrotic, thickened, adherent pericardium
  • constricting secondary to limited expansion during systole
  • restricted movement and function
  • often causes R sided HF
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11
Q

Constrictive Pericarditis leads to

A
  • reduced EDV

- CO and venous pressure increase

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12
Q

Pericardial effusion

A
  • fluid accumulation within pericardial sac

- compresses the heart, reduces ventricular diastolic filling, reduces CO

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13
Q

Pericardial effusion cause

A
  • blunt force trauma

- acute pericarditis

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14
Q

Aneurysm

A
  • abnormal dilation in wall of artery, vein, or heart with a diameter at least 50% greater than normal
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15
Q

How is an Aneurysm named?

A

By location:

  • aortic
  • thoracic aortic
  • abdominal aortic
  • femoral and popliteal
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16
Q

In a true aneurysm, layers of the vessel dilate in the following way

A
  1. saccular
  2. fusiform
  3. dissecting
17
Q

saccular

A

unilateral outpouching

18
Q

fusiform

A

diffuse dilation involving the entire circumference of the artery wall

19
Q

dissecting

A

bilateral outpouching.

layers of vessel wall separate. create a cavity

20
Q

False Aneurysm

A

wall ruptures, and a blood clot is retained in outpouching of tissue

21
Q

Ductus arteriosus

A
  • normal fetal artery that links pulmonary artery to aorta

- blood bypasses RV (pulmonary circulation)

22
Q

When is the ductus arteriosus closed?

A
  • within 15 hrs of birth

- permanently within 2-3 weeks

23
Q

what does the ductus arteriosus eventually become?

A

ligamentum arteriosum

24
Q

ductus venosus

A
  • shunts portion of umbillical cord blood directly to IVC

- allows blood from placenta to bypass liver and enter center circulation

25
Q

when does the ductus venosus open and close?

A

open: at birth
close: 3-7 days

26
Q

Patent foramen ovale

A
  • most need no intervention
  • provide passageway for thrombus movement anticlotting medication
  • open surgery
27
Q

Patent ductus arteriosus

A
  • occluded by plug inserted via catheter
  • closed off by physically tying off
  • approach: thoracotomy
28
Q

Patent ductus venosus

A

treated with meds, catheter based procedures, and sx

29
Q

Ventricular septal defect

A

hole in wall separating two lower chambers of the heart

30
Q

Ventricular septal defect symptoms

A

dependent on size of hole:

  • eventually LV works too hard, fails
  • pulmonary HTN

requires surgical repair

31
Q

Hypoplastic L heart syndrome

A

underdeveloped L side of heart.

Aorta and LV too small and holes in artery and septum didn’t properly mature/close

32
Q

Congenital Heart Defect Symptoms

A
  1. increased HR
  2. increased RR
  3. slowed growth
  4. dyspnea, orthopnea
  5. fatigue
  6. URI