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Exam Review

Key Facts: UKOM Sp.Ok Exam

Written

Knowledge-assessment component in the published KKOI guide

KKOI Panduan Ujian Nasional

Clinical + oral

Performance components in the published KKOI guide

KKOI Panduan Ujian Nasional

89

Statutory occupational diseases recognized under Perpres 7/2019

Perpres No. 7 Tahun 2019

7 Steps

Standard Indonesian clinical diagnostic steps for PAK

PERDOKI & Kemenkes Guidelines

The UKOM Sp.Ok is the national exit examination for occupational medicine specialists in Indonesia. The published KKOI guide describes written, clinical-skills, and oral components. This independent OpenExamPrep bank is an English-language MCQ study adaptation for independent review of physical, chemical, respiratory, fitness-to-work, and regulatory topics; it is not an official translation or substitute for performance practice.

Sample UKOM Sp.Ok Practice Questions

Try these sample questions to review concepts for the UKOM Sp.Ok exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1A 42-year-old boiler technician undergoes an annual periodic medical examination. Pure-tone audiometry reveals bilateral, symmetrical sensorineural hearing loss with a prominent dip centered at 4,000 Hz and partial recovery at 8,000 Hz. Bone conduction thresholds match air conduction thresholds. Which condition is most characteristic of this audiometric configuration?
A.Chronic occupational noise-induced hearing loss
B.Otosclerosis with Carhart notch
C.Presbycusis with downsloping high-frequency loss
D.Ménière's disease with fluctuating endolymphatic hydrops
Explanation: Acoustic notch centered at 4,000 Hz (often spanning 3,000 to 6,000 Hz) with recovery at 8,000 Hz is the classic hallmark of chronic occupational noise-induced hearing loss (NIHL). It presents as bilateral symmetrical sensorineural hearing loss due to metabolic and mechanical damage to outer hair cells in the basal turn of the cochlea.
2An occupational medicine specialist is analyzing the hearing conservation program data for a textile manufacturing facility. According to occupational health standards, which finding on an annual audiogram defines a Standard Threshold Shift (STS) relative to the worker's baseline audiogram?
A.An average decrease of 10 dB or more at 2,000, 3,000, and 4,000 Hz in either ear
B.A decrease of 15 dB or more at 4,000 Hz alone in both ears
C.An average decrease of 25 dB across 500, 1,000, and 2,000 Hz in the better ear
D.A decrease of 10 dB at 8,000 Hz in either ear after presbycusis adjustment
Explanation: A Standard Threshold Shift (STS) is defined as a change in hearing threshold relative to the baseline audiogram of an average of 10 dB or more at 2,000, 3,000, and 4,000 Hz in either ear. Identifying an STS triggers mandatory retesting, evaluation of hearing protector attenuation, and retraining under hearing conservation protocols.
3To obtain a valid baseline pure-tone audiogram for a newly hired stamping press operator exposed to continuous noise exceeding 85 dBA, what is the mandatory pre-test requirement regarding acoustic rest?
A.At least 14 hours of acoustic rest away from workplace noise, during which hearing protectors cannot be substituted for baseline establishment
B.At least 14 hours free from workplace noise exceeding 80 dBA, during which appropriately fitted hearing protection may be used
C.At least 48 hours of complete silence in an isolated sound-treated booth
D.At least 4 hours of quiet rest immediately before testing following a morning work shift
Explanation: To establish a true baseline audiogram free from temporary threshold shift (TTS), testing must be preceded by at least 14 hours without exposure to workplace noise exceeding 80 dBA. Hearing protectors (such as earplugs or earmuffs) may be used to meet this 14-hour requirement if removal from workplace noise is impractical.
4A 38-year-old road maintenance worker who operates pneumatic jackhammers reports episodic blanching of the distal phalanges of the middle and index fingers when exposed to morning cold, occurring two to three times weekly. Under the Stockholm Workshop Classification for the vascular component of Hand-Arm Vibration Syndrome (HAVS), which stage best matches this presentation?
A.Stage 0 (No attacks)
B.Stage 1 (Occasional attacks affecting only the tips of one or more fingers)
C.Stage 2 (Occasional attacks affecting distal and middle phalanges of one or more fingers)
D.Stage 4 (Extensive blanching of all phalanges with skin necrosis and digital ulceration)
Explanation: Stage 2 (Moderate) in the Stockholm Workshop vascular scale is defined as occasional attacks affecting distal and middle phalanges (and rarely also proximal phalanges) of one or more fingers. Stage 1 involves only the finger tips, whereas Stage 3 involves frequent attacks affecting most phalanges, and Stage 4 includes necrosis.
5In the neurosensory evaluation of a forestry worker presenting with numbness and reduced tactile discrimination from chainsaw operation, which test provides the most sensitive objective physiological assessment of large myelinated nerve fiber dysfunction in the early stages of sensorineural HAVS?
A.Vibrotactile perception threshold testing (VPT)
B.Routine motor nerve conduction velocity of the radial nerve
C.Needle electromyography of the abductor pollicis brevis muscle
D.Passive thermal imaging without cold challenge
Explanation: Vibrotactile perception threshold (VPT) testing using frequencies such as 31.5 Hz (Meissner corpuscles) and 125 Hz (Pacinian corpuscles) is the standard, validated physiological method for detecting early mechanoreceptor and large myelinated sensory fiber impairment in sensorineural HAVS.
6Heavy haul truck drivers in an open-pit coal mine in Kalimantan report chronic lower back pain. Industrial hygiene assessment reveals whole-body vibration (WBV) predominantly along the z-axis (vertical) at 4 to 8 Hz. Why is vertical vibration in this specific frequency range especially hazardous to the human lumbar spine?
A.It coincides with the natural resonant frequency of the seated human trunk and spinal column
B.It selectively inhibits calcium deposition in the vertebral endplates
C.It causes primary rupture of the abdominal rectus sheath muscles
D.It induces isolated thrombosis of the internal iliac venous plexus
Explanation: The human seated body has a fundamental mechanical resonance frequency between 4 and 8 Hz in the vertical (z-axis) direction. When external WBV occurs at this resonant frequency, dynamic forces on the intervertebral discs and spinal musculature are amplified several-fold, accelerating lumbar disc degeneration and microtrauma.
7An occupational medicine specialist calculates the Wet Bulb Globe Temperature (WBGT) for an outdoor construction crew working under direct solar radiation. The measured natural wet-bulb temperature (NWB) is 28°C, the globe temperature (GT) is 38°C, and the dry-bulb air temperature (DB) is 32°C. What is the outdoor WBGT value?
A.30.4°C
B.32.6°C
C.34.8°C
D.29.2°C
Explanation: The formula for outdoor WBGT with solar load is: WBGT = 0.7(NWB) + 0.2(GT) + 0.1(DB). Substituting the values: WBGT = 0.7(28) + 0.2(38) + 0.1(32) = 19.6 + 7.6 + 3.2 = 30.4°C.
8A 29-year-old metallurgical worker collapses inside a foundry furnace area. Examination reveals confusion, agitation, flushed skin, a heart rate of 138 beats/min, blood pressure of 88/54 mmHg, and a core rectal temperature of 40.8°C (105.4°F). What is the primary pathophysiological distinction between this worker's condition (heat stroke) and severe heat exhaustion?
A.Central nervous system dysfunction in the setting of severe heat illness, even if a later measured temperature is below 40°C
B.Presence of profuse diaphoresis rather than dry skin
C.Normal serum creatine kinase with preserved renal function
D.Absence of peripheral microvascular vasodilation
Explanation: Heat stroke is severe heat illness with central nervous system dysfunction such as delirium, seizures or coma. Core temperature is often above 40°C, as here, but cooling before measurement or delayed presentation can produce a lower reading; a rigid temperature cutoff must not delay treatment. Sweating may still be present, especially in exertional heat stroke.
9According to occupational health guidelines and Permenaker No. 5 Tahun 2018, which physiological adaptation occurs during successful occupational heat acclimatization over a 7- to 14-day progressive exposure protocol?
A.Earlier onset of sweating at a lower core temperature with reduced sweat sodium concentration
B.Delayed onset of sweating with increased urinary sodium excretion
C.Elevated resting heart rate and decreased stroke volume during exertion
D.Increased threshold for cutaneous vasodilation leading to higher skin temperatures
Explanation: Heat acclimatization improves thermoregulatory efficiency: sweating begins at a lower core body temperature, sweat volume increases, sweat sodium concentration decreases dramatically due to aldosterone-mediated tubular reabsorption, plasma volume expands, and cardiovascular strain decreases (lower heart rate and higher stroke volume).
10A worker in a cold-storage food packaging facility presents with bilateral painful, red, swollen toes with intact skin after working in wet boots at temperatures of 2°C to 8°C for consecutive 12-hour shifts. Capillary refill is 3 seconds and there are no frozen tissue blocks or ice crystallization. What non-freezing cold injury is this clinical picture typical of?
A.Trench foot (immersion foot)
B.Third-degree frostbite
C.Raynaud's disease
D.Cryoglobulinemic purpura
Explanation: Trench foot (immersion foot) is a classic non-freezing cold injury resulting from prolonged exposure (typically >10-12 hours) to damp or wet conditions at temperatures just above freezing (0°C to 10°C). It is characterized by microvascular endothelial damage, neurovascular vasospasm, erythema, edema, and paresthesias without tissue freezing.

About the UKOM Sp.Ok Exam

The UKOM Sp.Ok is the mandatory national exit and specialist competency examination for graduating occupational medicine residents in Indonesia. Governed by KKOI under Perkonsil No. 90 Tahun 2020, successful completion qualifies candidates for the specialist certificate (Sertifikat Kompetensi Sp.Ok) and specialist medical registration (STR Dokter Spesialis).

Exam sponsor: Kolegium Kedokteran Okupasi Indonesia (KKOI) with Konsil Kesehatan Indonesia (KKI) and PERDOKI. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Written, clinical-skills, and oral examinations under the published KKOI national-examination guide. This bank covers knowledge and clinical reasoning only and does not simulate clinical or oral performance.

Time Limit

Not published in the official sources reviewed.

Passing Score

Not published in the official sources reviewed.

Exam / Certification Fees

Not published in the official sources reviewed; confirm with KKOI.

Exam sponsor website

Reported exam pass rate: Not published. Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

20 of 100 practice questions

Occupational Physical Hazards & Ergonomics

Diagnosis and management of noise-induced hearing loss, standard threshold shifts, hand-arm and whole-body vibration syndromes, heat and cold stress, radiation safety, ergonomic postural evaluation (RULA/REBA), NIOSH lifting equation, and work-related musculoskeletal disorders.

20 of 100 practice questions

Occupational Chemical Hazards & Toxicology

Occupational toxicology of heavy metals (lead, mercury, arsenic, hexavalent chromium, cadmium), industrial organic solvents (benzene, toluene, xylene, n-hexane), toxic gases, agricultural pesticides, biological monitoring (BEIs), and environmental threshold limit values (NAB).

20 of 100 practice questions

Occupational Respiratory Diseases & Biological Hazards

Clinical evaluation of pneumoconiosis (silicosis, asbestosis, coal workers' pneumoconiosis, ILO radiographic scoring), sensitizer-induced and irritant-induced occupational asthma, hypersensitivity pneumonitis, work-related tuberculosis, bloodborne viral pathogens, and zoonoses.

20 of 100 practice questions

Fitness-to-Work & Return-to-Work Evaluations

Statutory pre-placement, periodic, and special medical examinations; job demand analysis (JDA); clinical fitness determinations for safety-critical roles (working at heights, confined space, commercial driving, offshore platforms, diving); return-to-work planning; and permanent disability rating under BPJS Ketenagakerjaan.

20 of 100 practice questions

Occupational Health Programs, Industrial Hygiene & Law

Indonesian occupational safety and health legal framework (UU No. 1/1970, UU No. 17/2023, Permenaker No. 5/2018, Perpres No. 7/2019), the 7-Step Method for Diagnosis of Occupational Diseases, hierarchy of controls, local exhaust ventilation, personal protective equipment, occupational epidemiology, and outbreak investigation.

Preparing for the UKOM Sp.Ok Exam

What You Need to Know

  • Passing score: Not published in the official sources reviewed.
  • Assessment: Written, clinical-skills, and oral examinations under the published KKOI national-examination guide. This bank covers knowledge and clinical reasoning only and does not simulate clinical or oral performance.
  • Time limit: Not published in the official sources reviewed.
  • Exam / certification fees: Not published in the official sources reviewed; confirm with KKOI. Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

UKOM Sp.Ok: Suggested Study Strategy

1Master the Indonesian 7-Step Method for diagnosing Penyakit Akibat Kerja (PAK) and practice applying all seven steps systematically to clinical vignettes.
2Memorize biological exposure indices (BEIs) and specific urinary/blood biomarkers for common industrial toxins (e.g. S-PMA for benzene, o-cresol for toluene, methylhippuric acids for xylene, 2,5-hexanedione for n-hexane, and speciated urinary arsenic).
3Understand the statutory distinctions under Permenaker No. 02/MEN/1980 between pre-employment, periodic, special, and exit medical examinations, as well as BPJS Ketenagakerjaan Form 3KK1 and 3KK2 notification deadlines.
4Review the ILO Classification of Radiographs of Pneumoconioses, including small opacity letter designations (p/q/r for rounded and s/t/u for irregular) and large opacity categories (A/B/C).
5Focus on fitness-to-work decision algorithms for safety-critical roles such as commercial drivers, workers at heights, confined space entrants, and offshore personnel, emphasizing the distinction between temporary unfitness and permanent disqualification.

Frequently Asked Questions

What is the format and structure of the official UKOM Sp.Ok examination?

The published KKOI guide describes written, clinical-skills, and oral examinations. The official sources reviewed did not publish current item counts, timing, scoring rules, or clinical and oral task counts.

What are the eligibility requirements to sit the UKOM Sp.Ok?

Candidates must have successfully completed an accredited Occupational Medicine Specialist residency program (PPDS Kedokteran Okupasi, such as at Universitas Indonesia), obtain formal recommendation from the residency program director (KPS), hold an active Indonesian general medical license (STR Dokter), and be registered with KKOI and PERDOKI.

What legal frameworks are emphasized in the Indonesian occupational medicine specialist exam?

Key statutory foundations include Law No. 1 Tahun 1970 (Occupational Safety), Law No. 17 Tahun 2023 (Health Law), Presidential Regulation No. 7 Tahun 2019 (Occupational Diseases / PAK), Minister of Manpower Regulation No. 5 Tahun 2018 (Occupational Safety and Health in the Working Environment), and BPJS Ketenagakerjaan regulations on work injury compensation and Return to Work programs.

What is the 7-Step Method for Diagnosis of Occupational Diseases tested on the exam?

The 7-Step Method (Diagnosis 7 Langkah PAK) is the standardized Indonesian clinical diagnostic pathway: 1) Clinical diagnosis; 2) Identification of workplace hazard exposure; 3) Establishing evidence-based causal relationship; 4) Determining adequacy of exposure (dose, intensity, duration); 5) Evaluating personal host factors; 6) Assessing non-occupational exposures outside work; and 7) Formulating the final occupational diagnosis determination.

Is this OpenExamPrep practice bank an official exam simulation?

No. This practice bank is an independent English-language four-option MCQ study adaptation developed by OpenExamPrep for clinical, toxicological, ergonomic, and regulatory knowledge review. It is not an official translation, format simulation, or substitute for clinical-skills or oral preparation, and is not affiliated with KKOI, KKI, or PERDOKI.