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Featured researches published by P Johnson.


The Permanente Journal | 2013

Leadership in surgery for public sector hospitals in Jamaica: strategies for the operating room.

Shamir O. Cawich; Hyacinth E. Harding; Ivor W Crandon; Clarence D McGaw; Alan T Barnett; I Tennant; Necia R. Evans; A. Martin; Lindberg K. Simpson; P Johnson

The barriers to health care delivery in developing nations are many: underfunding, limited support services, scarce resources, suboptimal health care worker attitudes, and deficient health care policies are some of the challenges. The literature contains little information about health care leadership in developing nations. This discursive paper examines the impact of leadership on the delivery of operating room (OR) services in public sector hospitals in Jamaica.Delivery of OR services in Jamaica is hindered by many unique cultural, financial, political, and environmental barriers. We identify six leadership goals adapted to this environment to achieve change. Effective leadership must adapt to the environment. Delivery of OR services in Jamaica may be improved by addressing leadership training, workplace safety, interpersonal communication, and work environment and by revising existing policies. Additionally, there should be regular practice audits and quality control surveys.


Developmental Medicine & Child Neurology | 2007

Aicardi syndrome associated with anterior cephalocele in a female infant

R Melbourne-Chambers; I Singh Minott; L Mowatt; P Johnson; Minerva Thame

Aicardi syndrome is a triad of abnormalities that includes total or partial agenesis of the corpus callosum, chorioretinal lacunae, and infantile spasms. This syndrome was first described in 1965. A female infant with Aicardi syndrome associated with a nasoethmoidal cephalocele is described in this report. She presented with a history of unilateral nasal discharge since birth and seizures since age 1 week. She was microcephalic and there was visual impairment. A fleshy mass of the left nostril was noted. Ophthalmological evaluation revealed left exotropia, dysplastic optic discs and retina, ‘morning glory’ appearance of the left optic disc, and bilateral chorioretinal lacunae. Magnetic resonance imaging of the brain showed absence of the corpus callosum, dysmorphic changes of the lateral ventricles, a superiorly located third ventricle, heterotopic grey matter of the frontal lobes, a left nasoethmoidal cephalocele, and closed lip schizencephaly of the left frontal lobe. This female infant developed asymmetric infantile spasms at age 8 weeks. Surgical correction of the cephalocele was declined. She developed recurrent pneumonias secondary to aspiration of feeds and died at age 8 months during one of these events.


International Journal of Surgery Case Reports | 2015

Bilateral complete ureteral duplication with calculi obstructing both limbs of left double ureter.

William Aiken; P Johnson; Richard Mayhew

Highlights • First report of complete ureteral duplication with stones obstructing both limbs.• Ureters are smaller and contained terminally within common adventitial sheath.• Small and unyielding ureters make ureteroscopic intubation and passage difficult.• Pre-stenting improves ureteral compliance and causes passive dilation of ureter.• Recommend routine pre-stenting in this scenario to improve ureteroscopic access.


West Indian Medical Journal | 2007

Mammographic referral patterns for two breast imaging units in Jamaica.

D Soares; K Kirlew; P Johnson; Marvin Reid

OBJECTIVE In countries that have instituted national mammographic screening programmes, mortality from breast cancer has decreased by as much as 63%. Although mortality rates from breast cancer in Jamaica are high, there is no national mammographic screening programme. In this context, opportunistic screening, which depends on contact between healthcare provider and patient, as well as self-referral become important. Therefore, the authors sought to determine the source of referrals for women who had mammography. SUBJECTS AND METHODS The variables of age, indication for mammography, source of referral and referring physician area of specialty if applicable were extracted from the attendance records for all patients who had mammography at the breast imaging unit at the University Hospital of the West Indies (UHWI) and Radiology West (RadWest) in the year 2003. RESULTS There were 779 bilateral mammograms done at UHWI of which 452 (58%) were screening and 1223 mammograms done at RadWest of which 657 (54%) were screening. The difference in proportion of self-referral between the two facilities was significantly different (p < 0. 001). Of the 452 screening mammograms performed at UHWI, 329 (73%) were self-referred, 31 (7%) were from primary care, 18 (4%) from gynaecologists and 17 (4%) from general surgeons. In contrast, of the 657 screening mammograms, at Radwest, 92 (14%) were self-referred, 323 (49%) were from primary care, 47 (7%) from gynaecologists and 37 (6%) from general surgeons. CONCLUSION To increase the utilization and hence effectiveness of screening mammography, programmes targeting healthcare professionals, particularly gynaecologists and the public are needed.


Journal of Surgical Technique and Case Report | 2013

Laparoscopic inguinal hernia repair in a developing nation: Short-term outcomes in 103 consecutive procedures

Shamir O. Cawich; Sanjib K. Mohanty; Kimon O Bonadie; Lindberg K. Simpson; P Johnson; Sundeep Shah; Ew Williams

Background: There are no published data on the outcomes of inguinal hernia repair from the Anglophone Caribbean. To the best of our knowledge, this is the first report of a series of laparoscopic inguinal hernia repairs from the region. Materials and Methods: Data was extracted from a prospectively maintained database of consecutive trans abdominal pre-peritoneal (TAPP) repairs done between June 1, 2005 and May 30, 2012. Perioperative data collected included patient demographics, hernia type, operative technique, duration of surgery, intra-operative details, morbidity, analgesia requirements, and duration of hospitalization. A telephone survey was also performed to identify late recurrences and complications. Descriptive statistics were generated using Statistical Package for Social Sciences (SPSS) Ver 12.0. Results: There were 103 consecutive TAPP procedures in 88 patients at an average age of 35.4 years ± 12.9 (standard deviation; SD) and average body mass index (BMI) of 28.9 Kg/m 2 ± 2.23 (SD). The indications were bilateral (30), recurrent unilateral (24), and primary unilateral (49) inguinal hernias. The mean duration of operation was 68.5 minutes (SD ± 10.4; Range: 55-95; Median 65; Mode 65) minutes for unilateral TAPP and 89 minutes (SD ± 7.61; Range: 80-105; Median 90; Mode 90) for bilateral repairs. Post-operatively, 65/70 patients required ≤1 dose of parenteral opioid analgesia and 74 (84.1%) patients discontinued oral analgesia within 48 hours of operation. Complications were recorded in six (5.8%) cases and a recurrence in one (0.97%) case after a mean follow-up period of 3.2 years (SD ± 1.8; Range: 0.5-7). Conclusion: Laparoscopic inguinal hernia repair is a safe and effective operation in this setting.


International Journal of Drug Policy | 2009

Occupational hazard: Treating cocaine body packers in Caribbean countries

Shamir O. Cawich; Ew Williams; Necia R. Evans; P Johnson

Body packing is a common method of smuggling cocaine where individuals ingest several drug-filled parcels for transport. When identified by the authorities, body packers are usually taken to hospital for evaluation. There are several points during management of these patients when the health care team may be placed at risk. We explore the hazards encountered during the management of these patients in developing Caribbean nations.


SpringerPlus | 2013

Accessory renal arteries in a Caribbean population: a computed tomography based study

P Johnson; Shamir O. Cawich; Sundeep Shah; William Aiken; Roy G McGregor; Hilary Brown; Michael T. Gardner

IntroductionThe commonest variation to the classic anatomic description of renal arterial supply is the presence of accessory renal arteries. The incidence varies widely according to ethnicity. There is no data on the prevalence of these anomalies in persons of Caribbean ethnicity.MethodsAll CT scans done over two years from July 1, 2010 to June 30, 2012 were retrospectively evaluated. The anatomy of the renal arterial supply was reported from these studies and the anatomy of accessory renal arteries was documented.ResultsThere were 302 CT scans evaluated and accessory renal arteries were present in 109/302 (36.1%) CT scans, 95% confidence interval 30.6%, 41.4%. There were 71/309 (23.5%) patients with accessory arteries on the left and 54/309 (17.9%) had them on the right (p 0.087). Of these, 16 (14.7%) patients had bilateral accessory renal arteries present. The most common origin for the accessory arteries was the abdominal aorta in 108 (99.1%) cases and in 1 case the accessory artery arose from the coeliac trunk. There were 80 left sided accessory renal arteries: 17 (21.3%) upper polar and 27 (33.8%) lower polar arteries. Of 62 right sided accessory arteries, 14 (22.6%) were upper polar and 26 (42%) were lower polar arteries.ConclusionThis is the first population-based report of anatomic anomalies in renal arterial supply in a Caribbean population. These are important findings that may affect vascular and urologic procedures on persons of Caribbean ethnicity.


Case reports in radiology | 2013

Vascular Supply to the Liver: A Report of a Rare Arterial Variant

P Johnson; Shamir O. Cawich; Sundeep Shah; Michael T. Gardner; Patrick Roberts; Brian Stedman; Neil W. Pearce

In the classic description of hepatic arterial supply, the common hepatic artery originates from the coeliac trunk. However, there are numerous variations to this classic pattern. We report a rare variant pattern of hepatic arterial supply and discuss the clinical significance of this variation.


West Indian Medical Journal | 2015

Profile of a Malignant Brain Tumour in Jamaica: An Eight-year Review, 2005 to 2012

P Johnson; Jaggon; J Campbell; C Bruce; D Ferron-Boothe; K James; Ivor W Crandon; D Eldemire-Shearer

OBJECTIVE Glioblastoma multiforme (GBM) is the most malignant and most common primary brain tumour worldwide. This study was undertaken to investigate the demographics of this tumour in Jamaica as there is to date no such published data. Data from the recently started Intracranial Tumour Registry (ITR) at the University Hospital of the West Indies was used. METHODS All cases of GBM entered into the ITR between 2005 and 2012 were gathered. Of these, only patients with pathologically proven diagnoses were entered into the study. Demographic data, including age and gender, were recorded. The distribution of the tumours by anatomic location was also documented. RESULTS Of the 602 patients entered into the ITR up to that time, 42 were found to have histologically proven GBM with a male to female ratio of 2.2:1. There was an age range of 8-92 years with a mean age of diagnosis of 48 years. The majority of the tumours (66.7%) occurred in the left cerebral hemisphere with the most common lobe being the temporal lobe. Two patients (4.8%) had lesions spanning both hemispheres. CONCLUSIONS This preliminary study reveals that there is a similar gender distribution of GBM within our population compared with the rest of the world. It, however, revealed that the mean age of diagnosis in our population (48 years) is lower than that quoted in the worldwide literature (53 to 64 years). One possible explanation for this is the possibility that many of our GBMs are actually secondary tumours which are thought to arise from less malignant, undiagnosed precursors. The percentage of GBMs occurring in the paediatric population was similar to the rest of the world.


West Indian Medical Journal | 2015

Ovarian Dermoid Cyst Causing Distal Ureteral Obstruction.

William Aiken; Richard Mayhew; S Mitchell; M Stennett; P Johnson

A case of a 45-year old woman with an ovarian dermoid cyst causing ureteric colic secondary to distal ureteral obstruction is reported. The dermoid cyst was observed on computed tomography to be adjacent to and compressing the distal left ureter and this was confirmed at surgical exploration. Following oophorectomy, the patients symptoms completely resolved and the excised ovarian cyst was confirmed on pathological evaluation to be a dermoid cyst. This appears to be the first reported case of ureteral obstruction caused by an ovarian dermoid cyst in the English medical literature.

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Shamir O. Cawich

University of the West Indies

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Sundeep Shah

University of the West Indies

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Ew Williams

University of the West Indies

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Michael T. Gardner

University of the West Indies

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D Eldemire-Shearer

University of the West Indies

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Lindberg K. Simpson

University of the West Indies

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Necia R. Evans

University of the West Indies

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William Aiken

University of the West Indies

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Neil W. Pearce

University Hospital Southampton NHS Foundation Trust

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G. Gordon-Strachan

University of the West Indies

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