Neck pain with radiculopathy: A systematic review of classification systems.

BACKGROUND: Disparities in eligibility criteria for cervical radiculopathy (CR) in clinical trials have been acknowledged previously. The increasing use of CR related neck pain classification systems to inform eligibility criteria in clinical trials warrants evaluation. OBJECTIVE: To evaluate existing neck pain classification systems for CR. DESIGN: Systematic review and critical appraisal, reported in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) guidelines. METHODS: Database searches were performed from inception until 31/7/2020. Neck pain classification systems containing CR as a component were included. Methodological quality of each classification system was assessed using seven measurement property domains and scored using a framework developed by Buchbinder and colleagues. Classification criteria for CR from classification systems assessed as moderate or good quality were narratively synthesised using inductive content analysis which consisted of selecting unit of analysis, open coding, grouping and categorisation. RESULTS: Out of 19,975 references, 14,893 remained after elimination of duplicates with 17 articles reporting 11 classification systems included. Five moderate and one good quality classification systems were identified. Nine classification criteria for CR were derived, including dermatomal sensory deficit, positive Spurling's test, positive upper limb tension test. CONCLUSION: All classification systems had methodological limitations with Childs et al. (2008) classification system identified as good quality and most clinically useful. Future studies should investigate the reliability of Childs et al. (2008) classification system as it has the potential to further strengthen its methodological quality and clinical utility. The nine derived classification criteria can inform eligibility criteria in future trials.

Early and late effects of mitomycin C and continuous low-dose-rate irradiation on the mouse skin and soft tissues of the leg.

The early and late effects of combined mitomycin C and continuous low-dose-rate irradiation (CLDRI) on the skin and soft tissues were studied in the C3Hf/SED mice. Localized CLDRI of the hind leg at 0.028 Gy/min with and without mitomycin C was delivered using a 137Cs laboratory irradiator. Mitomycin C at 6 mg/kg was given by continuous infusion through intraperitoneally implanted osmotic mini-pumps during CLDRI. Acute skin reaction was scored from days 13 to 30 and late skin contraction and leg contracture were measured at days 90, 180, 270, and 360 after treatment. Mitomycin C increased the early skin reaction following CLDRI; at a dose of 60 Gy, the dose effect factor was approximately 1.1. However, there was no significant enhancement of late skin contraction or leg contracture by mitomycin C. Our results suggest that mitomycin C can be combined with low-dose-rate brachytherapy without a significant increase in early or late damage to the skin and soft tissues.

Early and late effects of cisplatin and radiation at acute and low dose rates on the mouse skin and soft tissues of the leg.

The influence of radiation dose rate and drug dose on the combined effects of cisplatin (Cis-diamminedichloroplatinum (II] and radiation on the skin and soft tissues was studied in the C3Hf/SED mice. Localized acute-dose-rate irradiation (ADRI) at 3.345 Gy/min and continuous low-dose-rate irradiation (CLDRI) of the hind leg at 0.028 Gy/min with and without the drug was delivered using a 137Cs laboratory irradiator. Cisplatin at 6 or 11 mg/kg was given by intraperitoneal bolus injection 1 hour before ADRI or by continuous infusion during CLDRI. Acute skin reaction was scored from days 13 to 30 and late skin contraction and leg contracture were measured at days 90, 180, 270, and 360 after treatment. A marked dose-rate effect was observed for these early and late normal tissue endpoints. At a dose of 60 Gy of CLDRI, the dose rate factor (DRF = isoeffect dose at CLDRI/isoeffect dose at ADRI) was 1.82 for acute skin reaction and 1.76 for late skin contraction or leg contracture at day 270. However, there was no significant enhancement of these early and late normal tissue effects by cisplatin at 6 or 11 mg/kg at either acute or low dose rates. Thus neither drug dose nor radiation dose rate had a significant impact on the combined effects of cisplatin and radiation on the mouse skin and soft tissues of the leg.

Sensitization by SR-2508 plus Ro 03-8799.

The primary toxicity of Ro 03-8799 is a central nervous system toxicity, whereas that of SR-2508 is a peripheral neuropathy. The feasibility of reducing overall toxicity while maintaining maximal radiosensitization by using the two sensitizers together was tested. The LD50/2 of Ro 03-8799 was 0.68 mg/g body wt (mg/gbw) after intravenous (i.v.) administration, and that of SR-2508 was 4.4 mg/gbw after i.v. administration. When both drugs were given together in equitoxic proportions, the LD50/2 was 0.45 mg of Ro 03-8799 plus 2.9 mg of SR-2508/gbw. These doses are 66% of the respective LD50/2 values of the drugs when given separately. Radiosensitization was evaluated using in vivo-in vitro assays with EMT6/SF tumors in BALB/c mice. At drug doses between 10 and 60% of the LD50/2, sensitization was generally maximal and similar to that from misonidazole, but there was less sensitization below this dose, both with the drugs given separately and together. If chronic toxicities of these drugs overlap as do the acute toxicities there will be little or no additional benefit from using these drugs in combination, compared to using them separately.

The influence of time sequence of cisplatin administration and continuous low dose rate irradiation (CLDRI) on their combined effects on a murine squamous cell carcinoma.

The influence of time sequence of cis-dichlorodiammine platinum (cisplatin) administration and continuous low dose rate irradiation (CLDRI) on their combined effects was studied in the SCC VII/SF tumor, a murine squamous cell carcinoma. Concurrent cisplatin i.p. infusion at 0.22 mg/kg/hr and CLDRI at 0.6 Gy/hr had a supraadditive effect on the survival of the SCC VII/SF tumor cells. Cisplatin by itself was more effective against the SCC VII/SF tumor when given by bolus injection than by continuous infusion i.p. However, when cisplatin at a dose of 6 mg/kg was given by bolus i.p. injection either immediately before or after CLDRI, the combined effects on the SCC VII/SF tumor cell survival were no more than additive. Exposure to CLDRI at 0.6 Gy/hr for 24 hours did not sensitize the SCC VII/SF tumor to subsequent treatment with cisplatin. These results suggest that when cisplatin is combined with CLDRI, for the optimal anti-tumor effect, it is best to infuse the cisplatin continuously during the course of CLDRI.

Modification of the effects of continuous low dose rate irradiation by concurrent chemotherapy infusion.

The combined effects of continuous low dose rate irradiation (CLDRI) and concurrent infusion of bleomycin, cyclophosphamide, cis-platinum, 5-fluorouracil, actinomycin D, and mitomycin C were studied in the SCC VII/SF tumor, a squamous cell carcinoma and the jejunal crypt cells in the mouse. For the SCC VII/SF tumor, enhanced cell killing was seen with each of the six drugs when infused concurrently with CLDRI; the greatest enhancement was seen with mitomycin C and cis-platinum. For the jejunal crypt cells, enhanced cell killing was seen primarily with bleomycin. At a dose of 20 Gy, the dose effect factor (DEF) ranged from 1.13-1.64 for the SCC VII/SF tumor and 0.92-1.19 for the jejunal crypt cells. Our results suggest a therapeutic gain with concurrent CLDRI and chemotherapy infusion for five of the six chemotherapeutic drugs studied with the exception of bleomycin.

Correlations between in vivo 31P NMR spectroscopy measurements, tumor size, hypoxic fraction and cell survival after radiotherapy.

Phosphorus metabolite levels were measured non-invasively using 31P magnetic resonance spectroscopy (MRS) in SCCVII/SF tumors, subcutaneously transplanted into the legs of unanesthetized C3Hf/Sed mice. Shortly after MRS measurements, tumors were irradiated with a single dose of 20 Gy, and cell survival and radiobiologic hypoxic fraction were determined with an in vitro cloning assay. Significant correlations were found between tumor size and surviving fraction, hypoxic fraction, pH, and phosphorus metabolite ratios. With increase of tumor size, surviving fraction and hypoxic fraction both increased, the ratios of inorganic phosphate and phosphomonoesters to nucleoside triphosphates (Pi/NTP and PME/NTP, respectively) and inorganic phosphate to phosphocreatine (Pi/PCr) increased and pH decreased. However, considerable heterogeneity of MRS spectral parameters, even in tumors of similar size, precluded accurate prediction of hypoxic fraction and cell survival after radiotherapy.

Starting thrombolytic therapy for patients with acute myocardial infarction in Accident and Emergency Department: from implementation to evaluation.

OBJECTIVE: To evaluate the effectiveness of initiating thrombolysis for patients with acute myocardial infarction (AMI) in the Accident and Emergency Department. METHODS: From January 1993 to December 1995, all AMI patients who were admitted to the United Christian Hospital and given thrombolytic therapy were studied. The patients' demographic data, time and mode of presentation, site of myocardial infarction, treatment modality and timing, and complications related to AMI or treatment were recorded prospectively in our AMI database. The frequency of thrombolysis administered in Accident and Emergency Department and Coronary Care Unit, as well as the median door-to-needle time (time interval between hospital arrival to initiation of thrombolytic therapy) were compared. Cases of inappropriate thrombolysis and complication were also analyzed. RESULTS: Over these 3 years, 257 patients received thrombolysis in the United Christian Hospital. The percentage of patients receiving thrombolysis in Accident and Emergency Department increased from 3.2% in 1993 to 12.3% in 1994, and to 39.4% in 1995. The median time interval between arrival to hospital and thrombolysis (door-to-needle time) was 25 minutes, compared with 81 minutes in the Coronary Care Unit. The door-to-needle time also improved over these 3 years: from 95 minutes in 1993 to 75 minutes in 1995 in Coronary Care Unit group, and from 35 minutes in 1993 to 20 minutes in 1995 in the Accident and Emergency Department group. Over these 3 years, 2 cases of inappropriate thrombolysis were reported but these did not result in any mortality. Four complications from thrombolytic therapy were reported, and these were managed appropriately by the staff in Accident and Emergency Department and did not result in mortality. CONCLUSIONS: Starting thrombolytic therapy in Accident and Emergency Department is safe and effectively decreases the door-to-needle time.

Life threatening re-expansion hypotension and pulmonary oedema following treatment of a pneumothorax.

A 27-year old man was admitted with a right-sided pneumothorax of 2-3 weeks duration. A chest tube was inserted and connected to an underwater seal drainage system without the application of external suction. Three hours later, the patient developed unilateral re-expansion pulmonary oedema and severe hypotension. Active management consisted of ventilating the patient with the addition of PEEP, and the administration of liberal amounts of fluids, including plasma and gelatin solution. The mechanism of re-expansion pulmonary oedema is different from that of cardiogenic pulmonary oedema, and the treatment consequently different. The cause of the hypotension may be due to hypovolaemia, from rapid pooling of fluid within the thorax, pre-existing volume depletion and myocardial depression. One must specially be aware of this possible complication when the pneumothorax is large and of more than 3 days, and it is to be stressed that suction should never initially be used in the treatment of a pneumothorax.

Endobronchial tuberculosis simulating bronchial asthma.

Pulmonary tuberculosis is still a major health problem worldwide, but the principles of diagnosis and treatment are well-established. Endobronchial tuberculosis (EBTB) is known to complicate pulmonary tuberculosis and its importance lies in the potential for bronchostenosis. In the absence of parenchymal disease, EBTB is less well-recognised and can lead to difficulties in diagnosis. We report a 26-year-old woman who presented with symptoms of cough, shortness of breath and wheezing simulating bronchial asthma. Although the chest radiograph did not show any lung infiltrate, a bronchoscopy was carried out. The findings, suspicious of malignancy, were actually due to EBTB, which was confirmed on histology by special stains and on culture for Mycobacterium tuberculosis. The patient subsequently developed bronchostenosis, a well-described complication.

A fulminant case of neuroleptic malignant syndrome.

We report a fulminant case of Neuroleptic Malignant Syndrome in a 31-year-old male schizophrenic on haloperidol, thioridazine, benzhexol and flurazepam who presented with rigidity, fever, stupor and autonomic instability. He succumbed rapidly over 6 days to rhabdomyolysis, acute renal failure, status epilepticus and disseminated intravascular coagulopathy despite treatment with dantrolene and bromocriptine at the outset.

The profile of ICU admissions for acute severe asthma in a general hospital.

The clinical profile of 22 patients admitted to the Intensive Care Unit of Alexandra Hospital over a 2-year period was studied. The mean age was 48.8 years with a majority in the older age group. The attacks leading to admission were generally rapid in evolution with 59% having symptoms for less than 12 hours and 84% for less than 24 hours. Most had a history of severe asthma, and of long duration. The pre-admission therapy had been suboptimal in the majority. Severe respiratory acidosis was a predominant feature. 68% were transferred to the ICU within one hour of arrival at hospital. Mechanical ventilation was required in 86.4% of cases, but the duration of ventilation was usually short. There was no serious complication due to barotrauma. Overall mortality was 23% (5/22). Problems in patient education remain a major hurdle in our attempt to reduce asthma mortality.

Massive pleural effusion in pancreatitis: 2 case reports.

We report 2 patients with left-sided pleural effusion occurring in the setting of acute pancreatitis. Both patients had a strong history of alcohol consumption. In each case the pleural fluid amylase was markedly elevated, higher than that in the serum. The effusions resolved with closed chest tube drainage and the pancreatitis subsided with conservative therapy. In patients presenting with significant pleural effusions and acute upper abdominal symptoms, a thoracentesis with determination of the amylase titre may provide a quick means of diagnosing acute pancreatitis.

A profile of acute asthma patients presenting to the emergency room.

We conducted a three-month prospective study on the profile of 70 acute adult asthmatic patients presenting to the Accident and Emergency Unit of a general hospital. The overall background asthmatic activity, clinical features of current exacerbation, maintenance drug treatment, gross psycho-social problems, previous experience of near-fatal asthma, and admission and relapse rates were documented. Ninety percent of the presentations were within 24 hours of the initial attack, with an average pre-hospital therapy duration of 6.5 hours. Sixty-seven percent sought further treatment after failure to find relief from their salbutamol metered-dose inhalers. Sixteen percent did not receive any treatment before presentation. Ten percent gave a past history of mechanical ventilation for severe or near fatal asthma. The majority (94%) had asthmatic symptoms in the mild to moderate range. About half (46%) had attended the Emergency Room (ER) at least once in the previous six months. On average, patients were on two items of drugs and 23% were on maintenance inhaled steroids. One-third (33%) of the patients were found to have psycho-social problems relating to their condition. The admission rate was 37% with relapse rate following ER discharge of 13%. The study showed a high proportion of patients with psycho-social problems relating to asthma, and a subset of patients with frequent visits to the ER. It also revealed the infrequent use of prophylactic therapy.

Mortality of patients while on treatment for active tuberculosis.

In the era of effective antituberculous chemotherapy, some patients with tuberculosis still die while on treatment. The aim of this study was to review deaths occurring in patients while on treatment for active tuberculosis in Alexandra Hospital during the 4-year period from 1991 to 1994. Medical records of 30 such patients were reviewed retrospectively. Twenty-one patients were certified as dying from tuberculosis; in the remaining 9 patients, the principal cause of death was other than tuberculosis. Of the patients who died of tuberculosis, 7 (33.3%) died within a week and 19 (90.5%) died within a month of initiation of antituberculous treatment. Seventeen (81%) were males and 15 (71%) were smokers. All the 21 patients had pulmonary involvement and in 4 patients, there was disseminated disease. Chest roentgenographic findings of bilateral involvement were seen in 16 (76.2%) patients and of cavitary disease in 15 (71.4%) patients. Eighteen (86%) had a positive sputum smear result. Seven patients received corticosteroid cover. In 14 patients who had their weights recorded at initiation of antituberculous treatment, the mean weight was 36.3 kg (range 25.5k g-47k g). Notable biochemical derangements included hyponatraemia (86%) and hypoalbuminaemia (95%). Plasma cortisol and/or Synacthen stimulation test were performed in 4 patients; none was indicative of adrenal hypofunction. We conclude that death attributed to tuberculosis in patients while on treatment occurs early and is largely due to advanced disease.

Diagnosis of tuberculous peritonitis.

The diagnosis of tuberculous peritonitis may be difficult and elusive. The patient may present with non-specific symptoms of fever, general ill-health or vague abdominal pains. There may be no pulmonary symptoms and the chest X-ray may be normal. The CT scan of the abdomen is sometimes helpful in suggesting the diagnosis. We have found that laparoscopic examination of the abdominal contents and the peritoneum is an effective way to obtain a conclusive diagnosis.

Peak expiratory flow rate guided protocol did not improve outcome in emergency room asthma.

UNLABELLED: BACKGROUND AND AIMS OF STUDY: All current international practice guidelines recommend that treatment of acute asthma in the emergency room (ER) should be guided by the peak expiratory flow rate (PEFR). The aim of this study was to assess the efficacy of a PEFR guided protocol in treating ER asthma. METHODS: We compared two different management protocols in adult asthmatics who presented to the ER with acute exacerbations. The routine protocol (RP) assessed and dispensed patients according to overall subjective and clinical response without predetermined criteria. The peak protocol (PP) used serial measurements of PEFR to guide intensity of bronchodilator treatment and fitness for hospital discharge. On the PP, a threshold PEFR of > or = 60% predicted had to be achieved before the patient could be discharged from the ER. RESULTS: There were 79 patients in the RP group and 70 in the PP group. There was no significant difference between the two groups in baseline PEFR, PEFR after treatment and percentage increase in PEFR with treatment. The PP resulted in a higher hospital admission rate than RP. CONCLUSION: We conclude that in the management of acute asthma in the ER, a PEFR guided protocol neither improved overall PEFR response to treatment nor reduced admission rates when compared with current management as it is practised in Singapore.

Massive haemothorax as a complication of primary lung cancer--a case report.

A 58-year-old man was admitted with a massive haemothorax. At thoracotomy, the cause was found to be due to a bleeding primary lung cancer, the cell type of which was adenocarcinoma. A literature search revealed that this complication of lung cancer has not previously been described. Reasons as to the infrequency of this complication are discussed.

Pasteurella multocida septicaemia following a dog bite.

Bite wounds are often mistakenly considered innocuous. However, they are frequently complicated by infection which may be serious. We describe a case of Pasteurella multocida septicaemia with myopericarditis following a dog bite. Treatment of the infection as well as active support of myocardial function led to a successful outcome.

High prevalence of psychiatric morbidity in a medical intensive care unit.

This study seeks to determine the prevalence of psychiatric morbidity within a medical intensive care unit, examine its correlation with the various physiological parameters and delineate any clinical predictors for psychiatric morbidity. Seventy-seven patients who gave informed consent were administered the General Health Questionnaire (GHQ), Acute Physiological And Chronic Health Evaluation II (APACHE II) and thyroid function tests were performed. A high prevalence of psychiatric morbidity was found (36.4%). However, no statistically significant association was found between psychiatric morbidity and gender, age, APACHE II scores and thyroid function indices. Nevertheless, it is hoped that the index of suspicion for psychiatric morbidity can be raised in order to optimise the clinical management of patients within this setting.