Shared Flashcard Set

Details

Therapeutics VI: Exam #3 - GI Bleeds
n/a
27
Health Care
Graduate
04/23/2011

Additional Health Care Flashcards

 


 

Cards

Term
hematemesis
Definition
vomiting of blood or coffee-ground-like material
Term
melena
Definition
black-colored stool;
can occur w/ bleeding anywhere in GI tract
Term
hematochezia
Definition
bright red blood per rectum (BRBPR);
indicative of LOWER GI bleed
Term
Fecal Occult Blood Test (FOBT)
Definition
identifies presence of Hgb in still;
guaiac-based
Term
Sx of GI Bleeds
Definition
weakness/fatigue;
hematemesis;
melena;
hematochezia;
Term
Non-variceal Upper GI Bleed (UGIB)
Definition
Caused by:
1) PUD:
- single vessel
- Sx: hematemesis, weakness/fatigue;
- any part of stomach
- 12% mortality rate;
2) Stress-related Mucosal Damage (SMRD-"stress ulcer"):
- multiple capillaries
- asymptomatic
- in proximal stomach
- 50% mortality rates
Term
Variceal Upper GI Bleed (UGIB)
Definition
most common complication of liver cirrhosis/ESLD;
Predictors:
- size of varices
- location of varices
- decompensated cirrhosis
- appearance (red whale marks on endoscopy, cherry red spots, hematocystic spots)
Acute: bleeding <6 wks
Late: >6 wks
Term
Tx of UGIB
Definition
1) Short-term Abx: gram-Neg coverage (norfloxacin, ciprofloxacin) x 7 days;
2) Splanchnic Vasoconstrictors (vasopressin, NTG)
3) Somatostatin Analogs (octreotide, somatostatin)
Term
norfloxacin 400 mg PO BID;
ciprofloxacin 400 mg IV BID;
ceftriaxone 1 g IV/IM if at risk for FQN resistance
Definition
short-term antibiotic (use <7 days);
Used to prevent severe bacterial infection (UTI, SBP, pneumonia, bacteremia);
Have good Gram-Neg coverage;
Term
vasopressin
Definition
MoA: constricts mesenteric arterioles;
Dose:
- 0.4 unit bolus, then 0.2-0.4 units/min IV infusion; MAX dose: 1 unit/min; MAX duration: 24 hrs;
ADRs:
- cardiac, peripheral, cerebral, & bowel ischemia;
- arrhythmias;
- increase in BP;
Inferior to somatostatin analogs - NOT used in variceal GIB;
**Use w/ NTG IV infusion**
Term
Nitroglycerin (NTG)
Definition
Dose: 40-400 mcg/min;
Titrate to SBP >90 mmHg
Term
Octreotide
Definition
somatostatin analog;
MoA: inhibits release of vasodilatory hormones (glucagon);
Duration of Use: 3-5 days;
Dose: 50 mcg IV bolus, then 50 mcg/hr
Term
Secondary Prophylaxis of UGIB
Definition
Pharm Therapy:
1) Non-selective Beta-Blocker (propranolol, nadolol)
+/-
2) Nitroglycerin (NTG) - adjunctive therapy if Beta-Blockers not achieving goals;

Surgery: Transjugular Shunt (TIPS)
Term
Treatment Approach to UGIBs
Definition
1) Classify Risk for Rebleeding or Mortality
2) Assess Bleeding Severity
3) Resuscitation:
- correct fluid loss w/ IV fluids
4) Indications for Blood Transfusion
- give if blood loss b/w 1.5-2 L
- Hgb <7 mg/dL
5) Place NG tube
6) Correct any Coagulopathy
7) Ask Q's about pts PMH
8) Endoscopy
9) Pharmacological Tx: IV PPI (DOC), Somatostatin analogues (adjunctive tx), D/C ASA/NSAIDs/Anticoags.
Term
Goal Hgb in High Risk Pts
Definition
>10 mg/dL (older pts w/ comorbid conditions [CAD, liver cirrhosis])
Term
Goal Hgb in Low Risk Pts
Definition
>7 mg/dL (younger pts w/ NO comorbid diseases)
Term
Nasogastric (NG) Tube
Definition
place tube into stomach;
suction out any aspirate;
If no aspirate:
- bleeding resolved spontaneously
OR
- bleeding beyond the pylorus
Term
Correct Any Coagulopathy
Definition
do NOT delay endoscopy to do this;
Give Fresh Frozen Plasma (FFP) if INR >1.5;
Give Plts if Plt count is <50,000
Term
Questions to Ask about PMH
Definition
EtOH use;
Hx of liver dx or varices;
Hx of ulcers;
Weight loss;
Dysphagia;
Heartburn;
Abdominal Aortic Aneurysm
Term
Endoscopy
Definition
If severe bleed, perform this procedure ASAP (HR >100 bpm, SBP <100 mmHg, Hgb <10 gm/dL);
If mild-moderate bleed (BP nml, HR nml), do procedure when possible;
If large amount of bleeding suspected:
- give ERYTHROMYCIN 3 mg/kg IV over 20-30 min, give 30-90 min before procedure
Term
IV PPI - pantoprazole 80 mg bolus, then 8 mg/hr x 72 hrs
Definition
DRUG OF CHOICE for Tx of UGIB;
- give 80 mg bolus drip, then 8 mg/hr x 72 hrs OR high dose BID;
Length of Therapy: 3 days
Term
Octreotide
Definition
somatostatin analog:
- adjunctive tx BEFORE EGD
Term
BRBPR in LGIB
Definition
indicates bleed on left side of colon
Term
Dark/maroon colored stool
Definition
indicates bleed on right side of colon
Term
High Risk Pts w/ LGIB Complications
Definition
Hemodynamic instability;
Serious comorbid conditions;
Persistent bleeding;
Need for multiple blood transfusions
Term
Low Risk Pts for LGIB Complications
Definition
Young pt;
Bleeding resolves spontaneously
Term
Tx of LGIB
Definition
1) Resuscitation: IVF &/or vasopressors;
2) Correct coagulopathy
3) Consider NG tube placement
4) Colonoscopy - **Exam of CHOICE** --> cleanse colon before procedure: GoLytely, Colyte - drink 4-6 L over 2 hrs
Supporting users have an ad free experience!