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DR. Jekyll & Mr. Hyde

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DR. Jekyll & Mr. Hyde. Rami Khouzam, MD. Which one of the following tests would be POSITIVE:. a- BNP b- Troponin I c- Urine Na+ d- UDS e- Urine Ca++ and Mg++. ?. INDEX CASE 1. 50 yo AA gentleman presents with: One month hx of  LEs edema 3 days hx of SOB &  DOE

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slide1
DR. Jekyll & Mr. Hyde

Rami Khouzam, MD

which one of the following tests would be positive
Which one of the following tests would be POSITIVE:
  • a- BNP
  • b- Troponin I
  • c- Urine Na+
  • d- UDS
  • e- Urine Ca++ and Mg++

?

index case 1
INDEX CASE 1
  • 50 yo AA gentleman presents with:
    • One month hx of  LEs edema
    • 3 days hx of SOB &  DOE
    • Non-compliance with meds. (lately)
  • PMHx:
    • CHF
    • HTN
slide4
Meds:
    • Aldactone
    • Lasix
    • Diltiazem
  • PE:
    • Remarkable for: RR; 28, P:101, BP: 196/110, O2 Sat: 93% on 4L
    • S1 S2 S4. PMI @ ant. axillary line
    • Bilat. diffuse lung crackles & wheezes
    • 2+ edema bilat. in LEs.
slide5
CXR:
    •  Interstitial markings consistent with pulmonary edema
    • Cardiomegaly
index case 2
INDEX CASE 2
  • 54 yo AA gentleman with 3-4 hrs. hx. of CP, SOB, diaphoresis & palpitations
  • Admits to not taking his meds x 3 days because he was more busy drinking whisky and smoking cocaine & marijuana
  • PHMX:
    • CHF
    • HTN
    • Gout
slide7
Meds:
    • Lasix
    • KCl
    • Aldactone
  • PE:
    • Remarkable for P: 220, RR: 32, BP: 113/60, S1 S2. PMI laterally displaced
slide9
Adenosine 6mg, 12mg, 12mg
  • HR: 160 then 220 SVT (called @ 2:00 AM from Med. ER)
  • Vagal maneuvers
  • Amiodarone 150mg IV over 10 minutes
slide12
Hospital day # 4:
  • Left hospital AMA
  • Called @ 3:00 AM from VA
  • Patient found by EMT
  • HR: 180
index case 3
INDEX CASE 3
  • 45 Yo AA lady presented with CP, substernal, 8/10, pressure-like, radiating to left arm, accompanied with SOB, nausea & diaphoresis
  • PMHx:
  • CAD.. MI x 2 in the past
  • Meds:
  • - ASA
  • - Metoprolol
  • - Zocor
slide14
PE:
  • Remarkable for:
  • S1 S2, RR @ 110
  • EKG:
  • Sinus tachycardia
  • ST in I, aVL, V5, V6
  • Labs:
  • Trop: 1.8  2,4  8.0
  • Cath. Lab:
  • Lt. Cx: 80% Stenosis  Stent
which one of the following tests was positive in the previous 3 cases
Which one of the following tests was POSITIVE:(in the previous 3 cases)
  • a- BNP
  • b- Troponin I
  • c- Urine Na+
  • d- UDS
  • e- Urine Ca++ and Mg++

?

slide16
Index case 1: Hypertensive emergency
  • Index case 2: Life-threatening dysrhythmia
  • Index case 3: NSTEMI
  • Correct answer: d
  • UDS + for COCAINE
history of cocaine
HISTORY OF COCAINE
  • In pre-Columbian times, the coca leaf was officially reserved for Inca royalty. The natives used coca for mystical, religious, social, nutritional and medicinal purposes
  • Coca was initially banned by the Spanish
  • 1551: the Bishop of Cuzco outlawed coca use on pain of death because it was "an evil agent of the Devil"
slide18
The invaders discovered that without the Incan "gift of the gods", the natives could barely work the fields - or mine gold
  • So it came to be cultivated even by the Catholic Church
  • Coca leaves were distributed three or four times a day to the workers during brief rest breaks
  • Returning Spanish conquistadores introduced coca to Europe
  • It is told that even Shakespeare may have smoked it
slide19
1814: an editorial in Gentleman's Magazine urged researchers to begin experimentation so that coca could be used as "a substitute for food so that people could live a month, now and then, without eating..."
  • Around 1860: the active ingredient of the coca plant was first isolated in the West by Albert Niemann
  • To Sherlock Holmes, cocaine was "so transcendentally stimulating and clarifying to the mind that its secondary action is a matter of small moment”
  • Robert Louis Stephenson wrote The Strange Case of Dr Jekyll and Mr Hyde during a six-day cocaine-binge
slide20
Cocaine was soon sold over-the-counter. Until 1916, one could buy it at Harrods
  • Cocaine was widely used in tonics, toothache cure and patent medicines; in coca cigarettes "guaranteed to lift depression”; and in chocolate cocaine tablets
  • When combined with alcohol, the cocaine alkaloid yields a further potently reinforcing compound, now known to be cocaethylene
slide21
Cocaine was a popular ingredient in wines, notably Vin Mariani
  • Coca wine received endorsement from prime-ministers, royalty and even the Pope
  • Architect Frédérick-Auguste Bartholdi remarked that if only he had used Vin Mariani earlier in his life, then he would have engineered the Statue of Liberty a few hundred meters higher
cocaine the heart
Cocaine & The Heart
  • 1911: the earliest report of cocaine damaging the heart
  • Price & Leaky reported that cocaine use for local dental anesthesia could induce severe myocardial damage leading to death
  • (Braunwald)
slide24
Exploited by humans for at least 5000 years
  • Except for medicinal purposes, the drug is illegal in North America
cocaine
Cocaine
  • 2nd. most commonly used illicit drug in the US (after Marijuana)
  • ~ 30 million (~ 11%) persons in the US have used cocaine at some time
  • 5-6 million on regular basis
adulterants
Adulterants
  • Sugars
  • Stimulants (ephedrine, caffeine, amphetamines)
  • Quinine, strychnine
  • Local anesthetics
review of simple physiology
Review of Simple Physiology
  • Caliber of the coronary arteries is controlled by a complex interplay between:
    • Local metabolic factors

AND

    • Neural input
  • Oxygen delivery to the myocardium is achieved through changes in coronary artery caliber
slide28
A) Sympathetic
  • Norepinephrine from presynaptic vesicles onto alpha-and B2- receptors
  •  coronary v.c.
  • 2  coronary v.d. (mild)
  • B) Parasympathetic:
  • Acetylcholine on M3 Cholinergic receptors  v.d.
  • (Gutterman DG. The heart and cardiovascular system. 2nd ed. 1991)
cocaine more than just an illicit drug
Cocaine, more than just an illicit drug
  • Pharmacological effects:
    • Blocking reuptake of cathecholamines in the presynaptic neurons:  Norepinephrine
    •  Dopamine and Serotonin
    • Cholinergic stimulation
    • Blocking sodium channels :
    • Local anesthetic
    • Class I antiarrhythmic
effects of cocaine on hemodynamics
Effects of cocaine on Hemodynamics
  •  HR,
  •  BP
  •  myocardial contractility  cardiac output
  •  Cardiac function (Direct myocardial toxicity)
slide31
CVS toxicity:
    • Hypertensive emergency/ Pulmonary edema
    • Arrhythmias
    • Myocardial ischemia and infarction
    • Acute aortic dissection or rupture to stroke
    • Sudden death
    • Acute reversible myocarditis
    • Dilated cardiomyopathy
    • (Pasternack, PF Am J Cardiol 1985)
hypertensive emergencies
Hypertensive Emergencies
  • Phentolamine or direct -adrenergic antagonist: the antihypertensive of choice
  • Should -B be avoided with cocaine because of paradoxical hypertension ?
  • (class IIa for SBP > 150 or HR > 100)
  • IV NTG or nitroprusside can be used
  • (Braunwald)
dysrhythmias
Dysrhythmias
  • Atrial or ventricular
  • Sinus tachycardia: most common
  • A. fib, SVT (sympathetic stimulation)
  • Respond to sedation with benzodiadepines
  • Other standard therapies to slow rate
cardiac dysrhythmia
Cardiac Dysrhythmia

Cocaine (lidocaine-like effect) Rhabdomyolysis & ischemia

 

Blockade of fast Na+ channels Hyperkalemia

slowing depolarization

Wide complex tachycardia

(Braunwald)

slide35
Wide complex tachycardia from cocaine of unknown etiology  iv bolus of sodium bicarbonate, 1-2 mEq/kg will empirically treat sodium channel blockade as well as cardiotoxicity from hyperkalemia
  • (Braunwald)
mechanism of myocarditis
Mechanism of Myocarditis

1) Direct effect on lymphocyte activity

2)  natural killer cell activity in blood  cytotoxic to myocardial cells

3) Cocaine-related eosinophilic infiltrate  hypersensitivity reaction

4) Focal myocarditis also direct, negative inotropic effect on cardiac muscle

slide37
Cathecolamine excess  Contraction band necrosis  anatomic substrate for ventricular dysrhythmias
  • Autopsy support scattered foci of necrosis, myocarditis independent of CAD
  • (Braunwald)
the origin of cocaine
THE ORIGIN OF COCAINE
  • Erythroxylon coca is a densely-leafed plant native to the eastern slopes of the Andes
  • Coca is widely cultivated in Bolivia, Peru and Ecuador, but the lead producer is Colombia, currently the source of 80% of the world's cocaine
  • There are around 250 species of erythroxylon plants. At least 20 produce cocaine. Only 2 of them typically yield enough cocaine to justify commercial cultivation
slide39
Typically, coca thrives in warm, moist, frost-free valleys between 1500 and 6000 metres above sea level
  • The plant grows to a height of up to 8 feet and can be harvested 4 times a year
  • The leaves are rich in vitamins, protein, calcium, iron and fiber
  • The cocaine content of the leaves ranges from O.1% to 0.9%
crack cocaine
CRACK-COCAINE
  • To obtain crack-cocaine, ordinary cocaine hydrochloride is concentrated by heating the drug in a solution of baking soda until the water evaporates.
  • This type of base-cocaine makes a cracking sound when heated; hence the name “Crack”
  • Base-cocaine vaporizes at a low temperature, so it can be easily inhaled via a heated pipe
chemistry of cocaine
CHEMISTRY OF COCAINE
  • C17H21NO4
  • Cocaine can be manufactured by converting tropinone into 2-carbomethoxytropinone, reducing this to ecgonine,and then converting the ecgonine to cocaine
  • This isn't as easy as it sounds
cocaine body packers
Cocaine Body Packers
  • Cocaine is smuggled by a variety of techniques
  • Body packers ingest cocaine wrapped tightly into condoms or other latex products before crossing international borders
  • Each packet can contain up to 10g of cocaine and packers may swallow as many as 150 packets
slide43
On arrival at their destination: cathartic
  • Unfortunately rupture of cocaine packet can result in death, as each packet contains close to 10 times the lethal dose
  • (Braunwald)
mechanisms of ami
Mechanisms of AMI

1)  HR +  BP   myocardial oxygen demand

2)  coronary artery flow, coronary vasospasm or thrombosis

3) Active myocarditis (hypersensitivity or toxicity)

slide45
A recreational dose of cocaine:
    • HR ~ 30 beats/min.
    • Also BP by 20/10 mm Hg.(equivalent to mild exercise)
  • Not sufficient to result in myocardial ischemia
i vasoconstriction a animal studies
[I] VASOCONSTRICTIONA- Animal Studies
  • Hale et al: anesthetized dogs: IV bolus cocaine 10 mg/kg  15%  in circumflex artery diameter
  • (This dose ~ 5 times the dose used recreationally by humans)
  • (Hale SL, Am Heart J 1989)
slide47
Kuhn et al: cocaine 2mg/kg in a dog model  LAD diameter by 19% &  coronary blood flow of 55%
  • Attenuation of the effects of cocaine: pretreating with phentolamine:  VC
  • Potentiation of the effects of cocaine:
  • pretreating with propanolol:  VC
  • (Kuhn FE, J Am Coll Cardiol 1990)
slide48
Egashira et al: a swine model
  • Significant  in v.c. associated with denuded coronaries compared with native ones (59% cross-sectional area reduction vs 48%)
  • Vasoreactivity to cocaine may be greater in diseased coronaries
  • Egashira K, J Clin Invest 1991
b human studies
B- Human Studies
  • Human coronary arteries differ from animal arteries in a number of ways
  • Difference in the density and distribution of alpha-and beta-receptors
  • Most human studies have documented a  in coronary artery diameter ranging from 4% to 29% associated with cocaine use
slide50
Lange et al: phentolamine  abolishment of cocaine-induced V.C.
  • Flores et al: 13% reduction in coronary caliber was observed in disease-free coronary arteries, a 29% reduction in caliber in coronary arteries with significant stenoses (>50%)
slide51
Moliterno et al: cigarette smoking + cocaine  significant v.c.
  • (19% decrease in coronary diameter in cocaine plus cigarette smoking versus 7% in cocaine alone)
  • (Flores ED, J Am Coll Cardiol 1990)
time factor
Time factor
  • Brogan et al:
  • At 30 minutes: 17%  in coronary artery caliber (maximal serum concentration of cocaine)
  • At 60 minutes: coronary diameter returns to baseline
  • At 90 minutes: 21%  in diameter
  • (Serum concentrations of cocaine’s metabolites, benzoylecgonine, ethyl methyl ecgonine)
  • (Brogan WC, Ann Int Med 1992)
ii vasoconstriction a animal studies
[II]VASOCONSTRICTIONA- Animal Studies
  • Friedrichs et al: coronary v.d. within the first minute of I.V. cocaine
slide54
A 13% and 68%  in coronary perfusion pressure were measured, respectively, with 2mg/kg and 10mg/kg intravenous cocaine
  • Same with lidocaine (of the same class as cocaine) similar decreases in coronary perfusion pressure (vasodilatory effects ? due to the anesthetic properties of cocaine)
  • (Friedrichs GS, J Physiol Pharmacol 1990)
slide55
Zimring et al: early increase in coronary blood flow by 30% within the first 2 minutes of administration
  • (Zimring HJ, Circulation 1994)
  • Dual effect:
    • a- Early v.d.
    • b- Followed by a more sustained v.c.
    • ( Dose dependent and Different pharmacological properties)
b human studies56
B- Human Studies
  • Similar Results
effects of cocaine on platelets and thrombostasis
Effects of Cocaine on Platelets and Thrombostasis
  • Intravascular thrombosis:
    • Coronary
    • Pulmonary circulation
    • Peripheral venous circulation
    • Skin
    • Renal vasculature
  • Composed of platelet rich-aggregates or in the setting of atypical atheromatous lesions
  • (Minor RL, Ann Int Med 1991)
slide59
Echhorn et al: aortic segment of rabbits, daily IV cocaine (2 mg/kg) 6-12 weeks
  • Endothelium produced high levels of thromboxane A2
  • In humans: Moliterno et al: intranasal cocaine (2 mg/kg)   in the level of plasminogen activator inhibitor
  • (Moliterno DJ, Am J Med 1994)
slide60
Cocaine  166%  in platelet fibrinogen binding
  • (Kugelmass AD, Circulation 1993)
  • Prothrombogenic & Antibibrilolytic
treatment of cocaine induced ischemia infarction
Treatment of cocaine-induced ischemia/infarction
  • Benzodiazepines, ASA, & Nitrates
  • Ca.ch Blockers
cocaine and b
Cocaine and -B ??
  • -B ( including labetalol), should be avoided during acute cocaine toxicity
  • Patients with previously documented coronary insufficiency who present without acute intoxication may be candidates for
  • -B beginning with low doses
coronary atherosclerosis and lv hypertrophy associated with cocaine
Coronary Atherosclerosis and LV Hypertrophy Associated with Cocaine
  • Kolodgie et al: Autopsy: 495 patients, 6 (1.2%) had total thrombotic occlusion of a major coronary a.
  •  number of adventitial mast cells
slide64
Proliferation of coronary mast cells  accelerated atherosclerosis and the promotion of thrombosis
  • (Kolodgie FD, J Am Coll Cardiol 1991)
  • Cocaine also associated with  LV mass: substrate for development of ischemia
  • (Chakko S, J Am Coll Cardiol 1992)
summary
SUMMARY
  • Cocaine: Many adverse effects
  • CVS and CNS toxicity (among others…)
  • Cocaine-induced myocardial ischemia and infarction : multiple and distinct pathogenic mechanisms beyond v.c.
slide66
 myocardial oxygen demand by  HR &  BP +  in coronary artery diameter (V.C.)
  • Directly or indirectly activates platelets
  • Shift in endothelial prostaglandin balance  milieu that is favorable to thrombosis
  • Long-term cocaine use  accelerated and often more severe coronary artery atherosclerosis and LV hypertrophy
slide67
1886: Coca-Cola was introduced as "a valuable brain-tonic and cure for all nervous afflictions".
  • Coca-cola was promoted as a temperance drink "offering the virtues of coca without the vices of alcohol".
  • Until 1903, a typical serving contained around 60mg of cocaine
  • Today, it still contains an extract of coca-leaves only for flavoring since the drug has been removed
  • The Coca-Cola Company imports 8 tons from South America each year
slide68
My name is Cocaine - call me Coke for shortI entered this country without a passportEver since then I've made lots of scum richSome have been murdered and found in a ditchI'm more valued than diamonds, more treasured than gold Use me just once and you too will be soldI'll make a schoolboy forget his booksI'll make a beauty queen forget her looksI'll make a schoolteacher forget how to teach I'll make a preacher not want to preachI'll take all your rent money and you'll get evicted I'll murder your babies or they'll be born addictedI'll make you rob and steal and killWhen you're under my power you have no willRemember my friend my name is " Big C "If you try me just one time you may never be free I've destroyed actors, politicians and many a hero I've decreased bank accounts from millions to zero Now that you know me what will you do ?You'll have to decide, It's all up to youThe day you agree to sit in my saddleThe decision is one that no one can straddle Listen to me, and please listen wellWhen you ride with cocaine you are headed for hell !!!

(Anonymous)

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