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Critical Care
Internal Med
56
Science
Graduate
10/02/2015

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Cards

Term
Pericardial tamponade definition
Definition
pericardial effusion --> pressure on the heart --> limits ventricular diastolic filling & decreased CO
Term
Causes of pericardial tamponade
Definition
  1. same as pericardiditis - viral, idiopathic, neoplastic, autoimmune, Dressler's syndrome (s/p MI)
  2. may be traumatic
Term
Becks triad
Definition
  • distant heart sounds (effusion)
  • increased JVP
  • systemic hypotension
  • PERICARDIAL TAMPONADE
Term
clinical manifestations of pericardial tamponade
Definition
  1. Beck's triad
  2. pulsus paradoxus - drop > 10 of SBP w/ inspiration (pulses dissapear w/ inspiration)
  3. Kussmaul's sign - increased JVP w/ inspiration
Term
How do you diagnose pericardial tamponade
Definition
  1. ECG: low voltage QRS complex, electric alternans
  2. Echo: increased pericardial fluid + diastolic collapse of cardiac chambers (hemodynamic compromise)
Term
Treatment of pericardial tamponade
Definition
pericardiocentesis
Term
increased IOP with optic nerve damage
Definition
glaucoma
Term
any impediment to the flow of aqueous humor through the trabecular meshwork and canal of Schlemm all....
Definition
increase the pressure in the anterior chamber (glaucoma)
Term
Glaucoma sub-categories
Definition
acute or chronic
open-angle and angle-closure
Term
Which type of glaucoma is more common
Definition
open-angle
Term
ophthalmic emergency resulting from complete closure of the angle
Definition
angle-closure glaucoma
Term
chronic, asymptomatic, and potentially blinding disease that affects 2% of the population
Definition
open-angle glaucoma
Term
PE of angle-closure glaucoma
Definition
circumlimbal injection
steamy cornea
fixed mid-dilated pupil
decreased visual acuity
tearing
Term
anterior chamber is narrowed; IOP is acutely elevated
Definition
angle-closure glaucoma
Term
painful eye and loss of vision are important clinical features
Definition
angle-closure glaucoma
Term
increased IOP, defects in the peripheral visual field, and increased cup-to-disc ratios
Definition
open-angle glaucoma
Term
patients are typically asymptomatic until late in disease. Loss of peripheral vision is the main symptom
Definition
open-angle glaucoma
Term
elevated IOP without optic disc damage is known as...
Definition
ocular HTN
close monitoring is warranted
Term
Treatment for angle-closure glaucoma
Definition
  • must be referred immediately to an ophthalmologist.

Start

  • IV carbonic anhydrase inhibitor (ie acetazolamide)
  • topical BB
  • and
  • osmotic diuresis (ie. mannitol
Term
mydriatics should not be administered in which type of glaucoma?
Definition
angle-closure glaucoma
Term
Treatment for open-angle glaucoma
Definition
  1. referred to ophthalmologist 
  2. topical and/or systemic medications to decrease the IOP by decreasing aqueous production (BB, carbonic anhydrase inhibitors) 
  3. and/or increasing outflow (prostaglandin-like meds, cholinergic agents, epiephrine components) 
  4. alpha agonists (brimonidine) provide both mechanisms
Term
multi-organ dz of idiopathic cause. it is characterized by noncaseating granulomatous inflammation in affected organs (i.e.. lungs, lymph nodes, eyes, skin, liver, spleen, salivary glands, heart, nervous system)
Definition
sarcoidosis
Term
approximately 90% of patients had lung involvement
Definition
sarcoidosis
Term
common respiratory symptoms of sarcoidosis inxlusw:
Definition

cough

dyspnea of insidious onset

chest discomfort

Term
Extra pulmonary findings that are common in sarcoidosis inclde
Definition

erythema nodosum 

or

enlargement of parotid glands, lymph nodes, liver, or spleen

Term
Serum blood tests for sarcoidosis
Definition

leukopenia

eosinophlia

elevated erythrocyte sedimentation rate

hypercalcemia

hypercalciuria

Term
ACE enzyme levels are elevated in 40-80% of patients
Definition
sarcoidosis
Term
radiographic findings demonstrate symmetric bilateral hilar and right paratracheal adenopathy & bilateral diffuse reticular infiltrates
Definition
sarcoidosis
Term
What confirms the diagnosis of sarcoidosis
Definition

transbronchial biopsy of the lung or fine-needle node biopsy

biopsy shows noncaseating granulomas 

Term
Treatment of sarcoidosis
Definition

approximately 90% of cases are responsive to corticosteroids and can be controlled with modest maintenance doses

Term
is present when the pulmonary arterial pressure rises to a level inappropriate for a given cardiac output. Once present, it is self-perpetuating
Definition
pulmonary HTN
Term
Primary (idiopathic) pulmonary HTN
Definition
rare and has a fatal outcome
Term
_______________ has many causes that develop as a result of obliteration and obstruction of the pulmonary arterial tree
Definition
secondary pulmonary HTN
Term
What is the most important and potent stimulus of pulmonary arterial vasoconstriction in pulmonary HTN?
Definition

hypoxia 

other causes : acidosis and veno-cocclusive conditions

Term
Clinical features of pulmonary HTN?
Definition
  • dyspnea, angina-like retrosternal CP, weakness, fatigue, edema, ascites, cyanosis, & effort syncope
Term
PE: pulmonary HTN
Definition
  • narrow splitting and accentuation of the second heart sound 
  • systolic ejection click
Term
Diagnostic studies for pulmonary HTN
Definition
  • CXR - enlarged pulmonary arteries
  • EKG - RVH, atrial hypertrophy, RV strain
  • Echo - estimating pulm arterial pressure but right heart catheterization offers more precise hemodynamic monitoring 
Term
Management of primary pulmonary HTN
Definition
  • chronic oral anticoagulants
  • CCB to lower systemic arterial pressure
  • prostacyclin (potent pulm. vasodilator)
  • Heart-lung transplantation usually is needed
Term
management of secondary pulmonary hypertension
Definition
treating underlying d/o in addition to tx's for primary
Term
Where do PE's arise from?
Definition
  • thrombi in the systemic venous circulation or the right side of the heart
  • from tumors that have invaded the venous circulation
  • other sources
Term
More than 90% of pulmonary emboli originate as clots in...
Definition

the deep veins of the lower extremities

 

others include:

  • air emboli from central lines
  •  amniotic fluid from active labor
  • fat from long bone (femur fx)
Term
Risk factors revolve around Virchow triad
Definition
  1. hypercoagulable state
  2. venous stasis
  3. vascular intimal inflammation or injury
  • PULMONARY EMBOLISM
  • specific risks include: sx procedures (orthopaedic, pelvic, abdominal), cancer, oral contraceptives, and pregnancy
Term
Approximately 50-60% of patients with DVT will experience...
Definition

a PE

half will be asymptomatic

symptomatic PE is serious and potentially life threatening

Term
Symptoms of a PE
Definition
  • sudden onset of pleuritc CP
  • dyspnea
  • apprehension
  • cough
  • hemoptysis
  • diaphoresis
Term
Signs of a PE
Definition
  • tachycardia
  • tachypnea
  • crackles
  • accentuation of pulm component of 2nd heart sound
  • low grade fever
Term
Homan's sign
Definition
lacks sensitivity and specificity to PE but COULD be PE
Term
Management of PE
Definition
  • anticoagulation tx is initiated; heparin is anticoagulant of choice. LMWH or warfarin is continued after the acute phase
  • a minimum of 3 months is advised
  • Vena cava interruption (filter) is helpful in patients at high risk of recurrent who are unable to tolerate anticogulants
  • Prevention is key! high risk patients: early ambulation, intermittent pneumatic compression stockings, low dose heparin and LMWH or a combo of mechanical and pharmacological measure
Term
treatment of cardiogenic shock
Definition
  1. O2, isotonic fluids (avoid aggressive IV fluid tx w/ smaller amounts of fluid) 
  2. inotropic suppor: drugs to increase myocardial contractility & CO - dobutamine (positive inotroe), epi(pos. inotrope & vasoconstrictor), amnirone.  intraortic balloon pump
  3. treat underlying cause: ie. MI: early angioplasty or thrombolytic tx 
Term
what is the only type of shock in which you treat with smaller amounts of fluid?
Definition
cardiogenic shock
Term
treatment of obstructive shock (massive PE, pericardial tamponade, tension PTX, aortic dissection)
Definition
  • O2, isotonic fluids, inotropic support : dobutamine, ep, intra aortic abloon pump
  • treat underlying cause
  1. PE : heparin, thrombolytic tx +- embolectomy
  2. pericardial tamponade - pericardiocentesis
  3. tension PTX - needle decompression
  4. proximal dissections usually require sx
Term
treatment of septic shock
Definition
  • broad spectrum IV abx: early tx. Zosyn + Ceftriaxone or imipenem
  1. gent for pseudomonas
  2. vanc for MRSA
  3. clinda or metronidazole for intraabdominal
  4. Ceftriaxone in asplenic pts to cover N. meningitides & H. flu
  • IV fluid resuscitation: isotonic crystalloids (NS, LR)
  • vasopressors: if no response to 2-3 L of IV fluids with goal of MAP > 60 mmHg. +- 100 mg IV hydrocortisone
Term
treatment for anaphylactic shock
Definition
  • epi 1st line (0.3 mg IM of 1:1000 repeat q5-10m)
  • IV CV collapse give 1 mgIV of 1:10,000
  • airway management
  • antihistamines (diphenhydramine 25-50mgIV blocks H1, rantidine IV blocks H2)
  • IV fluids
  • observe pts for 4-6 hrs b/c up to 20% have biphasic phenomenon (return of sx 3-4 hrs after inital rxn)
Term
treatment of neurogenic shock
Definition

fluids

pressors

+- steroids

Term
treatment of endocrine shock (i.e. adrenal insufficiency, Addisonian crisis)
Definition
hydrocortisone 100 mg IV (often unresponsive to fluids and pressors alone)
Term
Treatment of circulatory shock
Definition
  1. Airway
  2. Breating: mechanical vent & sedation decrease work of breathing
  3. Circulation: isotonic crystalloids (NS, LR) 
  4. Deliver of O2: monitor lactate levels
  5. Endpoint of resuscitation: urine output: 0.5 mg/kg/hr, CVP 8012. MAP 65-90, Central venous o2 >70%
Term
treatment of hypovolemic shock
Definition
  • ABCDE's, insert 2 large bore IV's or central line
  • volume resuscitation: crystalloids often given 3-4 L 
  • +- packed RBC transfusion: if hemorrhage (O-neg or cross matched)
  • prevention of hypothermia, treat any coagulopathies
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