chapter 4c emergency medicine in the podiatric office

4.3 Emergency Medicine in the Podiatric OfficeMelvyn Grovit, DPM, MS, CNS

Emergencies occurring in the podiatric office setting require a focused history and physical examination to pro-

vide adequate assessment and effective management of the emergency condition. The guiding influence in virtually

any emergency is the adherence to principles of the ABC’s: Assess and clear the Airway; Assess and ensure Breathing;

Assess and maintain Circulation.

Emergency conditions therefore can generally be approached and managed by supporting respiration, cardiac

function, and central nervous system equilibration. For the purpose of this review, we will classify the most common

emergencies according to the system principally affected and provide for the specific management for those emer-

gencies within a given system.

Initial ProceduresIn all instances the patient should be placed in an appropriate position (Fowler, Semi-Fowler, Trendelenburg,

Thorax flat, Legs elevated 30, Sit-up, or Coma) depending upon desired effects upon respiration and/or hemody-

manics. EMS should be summoned immediately and it is the role of the podiatrist to ensure optimal patient care

until the arrival of EMS personnel. I.V. access should be established early as profound hypotension, such as occurs in

shock, may preclude finding a suitable vein. If pulmonary or cardiac arrest are established at any time, CPR must be

initiated with all due haste.

Approach to the Patient with Respiratory DistressDyspnea

Clinical FeaturesDysphea may have multi-factorial origins and is a subjective feeling of difficult, labored, or uncomfortable

breathing. The patient presents with tachypnea, tachycardia, stridor and use of assessory respiratory muscles (stern-

ocleidomastoid, supraclavicular and intercostal). Other subjective and objective findings are inability to speak, agita-

tion, or lethargy (due to hypoxia and paradoxical abdominal wall retraction upon inspiration).

ManagementThere is no single cause of dyspnea. Therefore, the primary management goal is to maintain a patent airway

and provide appropriate oxygenation; in COPD, by nasal cannula at low flow (2L, 28% O2), in impending respirato-

ry arrest, high flow (15L, 95% O2) by non-rebreathing mask in the conscious patient and bag-valve mask (15 L

100%) in the unconscious patient. Moderate degrees of dyspnea can be managed with varying flow rates and O2percentages via nasal cannula, 1L = 24% O2. Each additional liter of O2 by nasal cannula delivers an additional 4%

O2, 1 L = 24%, 2L = 28%, 4 L = 36%, etc.) In a spontaneously breathing patient, oxygen delivery by nasal cannula

becomes less effective beyond 6-7L owing to the escape of oxygen into the atmosphere.

Medicine | Emergency Medicine in the Podiatric Office 277

Wheezing Secondary to Bronchospastic Disease (Asthma, COPD)

Clinical Features• Dyspnea

• Chest tightness

• Wheezing

• Cough

The wheezing presents as a prolonged expiratory component. An associated state of hypoxia is characterized by

tachypnea, cyanosis, agitation and apprehensiveness, tachycardia and hypertension. It should be noted that patients

with the most profound airway obstruction may not wheeze at all and their respiratory competence should then be

evaluated by lung auscultation. Pulsus paradoxicus in excess of 20 mm/Hg. may be present. Diaphoresis and somno-

lence indicate hypercapnia and respiratory acidosis. The presence of cyanosis indicates tissue hypoxia. There are two

levels of cyanosis: peripheral and central. In peripheral cyanosis the skin is reactive, and in central cyanosis the skin

and mucous membrane areas are involved indicating more profound hypoxia. It may be difficult to establish a pri-

mary source of cyanosis as there may be an admix of mechanisms. Condition specific oxygen administration, at the

appropriate flow and percentage, is advisable.

Management• Establish a patent airway; loosen collar, etc.

• Sit-up position

• Administer a Beta-agonist by inhalation, such as albuterol (1-2 inhalations)

• Administer underlying disorder - specific medications

– Pulmonary edema = furosemide 40-80 mg I.V.

– Severe asthma = epinephrine 1:1000, 0.3-0.5 ml. subcutaneously

– Oxygen 2-4L (28%-36%) by nasal cannula

• Transport the patient to the hospital

Approach to the Patient in Cardiovascular Compromise Chest Pain

Clinical FeaturesThe pneumonic P, Q, R, S, T establishes the history of the event; Provocation, Quality, Radiation, Severity, Time

of onset of pain. Associated findings, such as diaphoresis, nausea, or vomiting are of concern and indicate an

increased likelihood of an ischemic event. Pain may be retrosternal or radiate to the left shoulder, arm, hand or jaw.

The history of age above 40, male or postmenopausal female, hypertension, cigarette smoking, hypercholes-

terolemia, diabetes, truncal obesity, family history, and sedentary life style pose serious risk factors pointing to

increased risk for an ischemic event. Differential diagnosis includes myocardial infarction, unstable angina, aortic

dissection, pulmonary embolism, pneumothorax, and esophageal rupture. Palpitations further raise the index of

suspicion of myocardial ischemia. Musculoskeletal origin of pain may be ruled out by movement, as movement will

increase the pain.

278 The 2005 Podiatry Study Guide

Office Emergency Management:• Activate EMS.

• Fowler position

• Administer oxygen

– 4L, 36% by nasal cannula.

– If COPD is present, administer 2L, 28% by nasal cannula

– Maintenance of appropriate oxygenation is determined by frequent monitoring of the patient’s condition

• Establish I.V. access with 5% dextrose in water

• Administer underlying disorder- specific medications

– Angina – sublingual nitroglycerin 1/150 gr. sublingual q 5 minutes up to 3 doses or until relief of symptoms

– Myocardial Infarction – sublingual nitroglycerin as above. Morphine sulfate I.V. 2-4 mg, if available,

will relieve pain and reduce preload, 325mg ASA p.o. for inhibition of platelet aggregation

Cardiac Arrest

Basic life support, EMS transports the patient to the hospital. The hospital evaluation of an acute myocardial

infarction will begin with an immediate EKG to establish the indication for thrombolytic therapy.

Approach to the Patient with CNS Disturbance A rapid assessment of the nervous system in the podiatric office can be accomplished by evaluation of mental

status, speech process and content, sensation, coordination, reflexes, motor control including gait with associated

movements. differential diagnosis of conditions involving the CNS in some manner are remembered by the follow-

ing pneumonic: TIPS = Trauma, Infection, Psychiatric, Space occupying lesions. AEIOU = alcohol (and drugs),

endocrine, insulin, oxygen, uremia. The goal of the assessment is to differentiate structural focal CNS conditions

from diffuse metabolic processes. There are three conditions representative of the more common conditions altering

mental status: vasovagal syncope, hypoglycemia, and seizure disorders.

Clinical FeaturesVasovagal Syncope: Prodromal subjective complaints include blurring of vision, dizziness, pallor, nausea and

diaphoresis – occurring in the setting of environmental stimuli, such as fear, pain, and/or excessive heat.

ManagementHave a high index of suspicion of more life-threatening processes, such as cardiac events, CVA, and drug reac-

tions. Placing the patient in a position supporting increased cerebral circulation (Trendelenburg, Thorax flat, Legs

elevated 30º) is usually sufficient.

Hypoglycemia

Patients with hypoglycemia have a wide array of presenting signs and symptoms based upon the neurogly-

copenic and compensatory sympathomimetic effects. Since the principal fuel in the brain is glucose, it is not sur-

prising to find CNS dysfunction associated with glucose levels < 50 mg./dL. The patient experiences lethargy, confu-

sion, combativeness, agitation, and unresponsiveness. More extreme manifestations are the development of seizures

and focal neurologic deficits. When the counter-regulatory hormones epinephrine and norepinephrine are stimulat-

ed, the patient experiences anxiety, nervousness, irritability, nausea, vomiting, palpitations and tremor.


Management• Fowler position (low), or supine, or Trendelenburg

• Finger stick glucose. Result <50 mg/dL

• IV 50% dextrose in water followed by another ampule of 50% dextrose in water if the finger glucose does

not return to a normal range (>100 mg/dL)

• If IV route of dextrose administration is unobtainable give 1 mg of glucagon IM, followed by oral glucose

when the patient is conscious. Glucagon activates the release of glycogen as glucose and therefore the effect

may be short-lived if additional glucose is not available when liver glycogen is depleted.

• Comorbid conditions such as cardiac disorders dictate activating EMS and transporting the patient to the

hospital

Seizure Disorders

Seizure disorders may be categorized as focal, generalized, and focal with secondary generalization. A focal

seizure affects only a defined area of the body. A generalized seizure involves the entire body. Focal with secondary

generalization begins in a localized area of the brain and then spreads to involve the entire brain resulting in gener-

alized seizure activity.

Clinical Features • Abrupt onset and termination

• Lack of recall

• Purposeless or inappropriate movement

• A postictal period of confusion and lethargy

• Loss of continence

Management Status epilepticus is defined as either seizure activity lasting 30 minutes or more or two or more seizures that

occur without full recovery of consciousness between attacks. Status epilepticus requires urgent treatment. EMS

should be activated. The patient should be protected from trauma. Start an IV with normal saline or lactated

Ringer’s solution. Lorezapam 2 mg or diazepam 5mg IV is administered, slowly so as to guard against respiratory

arrest. The maximum dose of diazepam is 20mg. Oxygenation can be accomplished by nasal cannula, 4–6 L/min.,

36%-44%. It should be appreciated that benzodiazapines can induce respiratory arrest, which would necessitate

immediate endotracheal intubation. The patient should be transported to the hospital as soon as possible. Many

seizures of limited duration require no emergency treatment other than careful monitoring of vital signs, proper

positioning (coma position) to prevent aspiration. In all circumstances, the patient’s physician should be notified.

Approach to the Patient with AnaphylaxisAnaphylaxis is the most severe form of systemic allergy, which results in profound respiratory and cardiovascu-

lar decompensation. Perhaps the most common cause of anaphylaxis in the podiatric office may be related to the

paraben preservatives in local anesthetics. The most commonly used local anesthetic, lidocaine, enjoys an excellent

record of safety. In some atopic individuals, however, an untoward reaction may occur.

Clinical Features

The clinical presentation generally occurs rapidly after an exposure to the allergen. It begins with pruritis, cuta-

neous flushing and urticaria, which then proceeds to feelings of fullness in the throat, chest tightness, dyspnea, light-

headedness, and subsequent loss of consciousness.


Office Emergency Management

• Note time of onset of reaction

• Exposure to the causative agent should be terminated

• EMS should be activated

• Semi-Fowler position and adjust according to assessment

• Establish airway patency

• Assist breathing as required with high flow oxygen, 15 L/min, 100%

• Establish IV access with large bore angiocatheter

• Administer medications according to assessment

– Epinephrine 1:1000, 0.3 – 0.5 ml subq. For adults. This is important to administer ASAP in order to

counter the systemic effects of released histamine. It may be advisable to administer the subq. epineph-

rine prior to establishing IV access as difficulty with IV access may cause a serious delay in desired phar-

macological response. Patients on beta-blockers may be epinephrine resistant and glucagon, 1mg IV q 5

min. may also be used to advantage

– Diphenhydramine 50 mg IM to counter subsequent histamine release. If reaction is more severe, IV

diphenhydramine 50– 100 mg may be administered.

– Hydrocortisone 250 mg–1000 mg IV or methylprednisolone 125 mg-250mg IV may be administered. It

should be noted, however, that steroids have an onset of action of 4-6 hours and will have limited bene-

fit in the acute attack.

– The patient should be transported to the hospital with a record of the time of onset and time and doses

of medications administered

References1. Greenberg MR, Greenberg GS, “Preparing for and Managing the Podiatric Office Emergency.”

Lower Extremity 2, 1995

2. Markovchick VJ, Pons PT, Wolfe, RE, Emergency Medicine Secrets, Hanley & Belfus, Inc.1993.

3. Tintinalli JE, Kelen, GD, Stapczynski, JS. Emergency Medicine, A Comprehensive Study Guide, 5th edition.

McGraw-Hill, 1999.

4. Tintinalli, JE, Kelen, GD, Stapczynski, JS. Emergency Medicine, A Comprehensive Study Guide, Companion

Handbook, 5th edition, McGraw-Hill, 2000.


chapter 4c emergency medicine in the podiatric office

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